Jaypee mini atlas series periodontics

Jaypee Gold Standard Mini Atlas Series®
Periodontics
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Jaypee Gold Standard Mini Atlas Series®
Periodontics
Shantipriya Reddy
Professor and Head
Department of Periodontics
Dr Syamala Reddy Dental College
Bengaluru, India
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JaypeeGoldStandardMiniAtlasSeries®
:Periodontics
©2009,ShantipriyaReddy
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jurisdiction only.
First Edition : 2009
ISBN 978-81-8448-510-3
Typeset at JPBMP typesetting unit
Printed at Ajanta Press

To
My Father-in-law and Mother-in-law
My family Dr Bathi Reddy,
Bhavya and Rishi

Preface
The Atlas of Periodontics is written as a guide for students
and practitioners with a special interest in periodontics. It
is not intended as a textbook for the established
practitioner in the specialty, for in a book of this size, it is
impossible to cover all the aspects of the subject in detail.
This book is primarily an introductory text for dental
students and suitable for general practitioners and post-
graduate students.
This book gives a comprehensive and up to date
pictures about the various types of periodontal diseases,
pathogenesis and state-of-the-art surgical and non-surgical
therapies. It has a wide range of illustrations and
photographs, depicting the details of various periodontal
procedures.
It is always said that teachers continue to learn only
when they have students. This is very true in my
experience and my special thanks to all my students who
have helped me all along.
The subject matter, diagrams and photographs are all
developed over a period of time under the influence of
my teachers Dr RP Nayak, Dr CD Dwarkanath and

VIII / Mini Atlas Series: Periodontics
my colleagues and close co-operation from my post-
graduate students.
I have had a good fortune to work closely with great
periodontists all the time. One such person Dr Sarita
Narayan, who had a great influence on my thinking, my
respect and gratitude towards her and all other friends
are profound.
Shantipriya Reddy

1. Biology of Periodontal Tissues ........................ 1
2. Periodontal Microbiology (Dental Plaque) ..... 17
3. Calculus and Other Etiological Factors ......... 25
4. Gingival Inflammation ................................. 33
5. Clinical Features of Gingivitis ....................... 41
6. The Periodontal Pocket ................................ 51
7. Bone Loss and Patterns of
Bone Destruction ........................................ 67
8. Diagnosis of Periodontal Diseases................. 75
9. Plaque Control ............................................ 83
10. Suturing Techniques .................................... 93
11. Gingivectomy ............................................ 115
12. Periodontal Flap ........................................ 121
13. Osseous Surgery ........................................ 137
14. Mucogingival Surgery ................................ 141
Index ................................................................... 169
Contents

2 / Mini Atlas Series: Periodontics
THE GINGIVA
The gingiva is that part of the oral mucosa (masticatory
mucosa) that covers the alveolar process of the jaws and
surrounds the necks of the teeth. Anatomically the gingiva
is divided into—marginal, attached and interdental.
Fig. 1.1: Surface characteristics of the
clinically normal gingiva
Marginal Gingiva or Free Gingiva or
Unattached Gingiva
It is defined as the terminal edge or border of the gingiva
surrounding the teeth in a collar-like fashion. In some

Biology of Periodontal Tissues / 3
cases it is demarcated apically by a shallow linear
depression called the “free gingival groove”.
Fig. 1.2: Anatomic landmarks of gingiva
Gingival Sulcus
It is defined as the space or shallow crevice between the
tooth and the free gingiva, which extends apical to the
junctional epithelium. It is V-shaped and barely permits

the entrance of a periodontal probe. The so-called probing
depth of a clinically normal gingival sulcus in humans is
2 to 3 mm.
Fig. 1.3: Sulcus depth in healthy gingiva
Attached Gingiva
It is defined as that part of the gingiva that is firm, resilient
and tightly-bound to the underlying periosteum of the
alveolar bone.

Interdental Gingiva
Usually occupies the gingival embrasure. There are three
parts of interdental gingiva; facial papilla, lingual papilla
and col, which is a valley-like depression that connects
the facial and lingual papilla.
Fig. 1.4: Absence of interdental papilla in
diastema cases

Microscopic Features
The gingiva consists of a central core of connective tissue
covered by stratified squamous epithelium. Three types
of epithelium exists in the gingiva.
1. The oral or outer epithelium (keratinized epithelium).
Fig. 1.5: Orthokeratinized epithelium

2. The sulcular epithelium.
3. The junctional epithelium (non-keratinized epithe-
lium).
In the keratinized epithelium, the principal cell type is
the keratinocyte, which can synthesize keratin.
The non-keratinized epithelium contains clear cells,
which include melanocytes, Langerhans’ cells, supra-
alveolar connective tissue.
The connective tissue supporting the oral epithelium
is termed as the lamina propria and for descriptive purpose
it can be divided into two layers:
a. The superficial papillary layer—associated with the
epithelial ridges.
b. Deeper reticular layer—that lies between the papillary
layer and the underlying structures.
Merkel cells and lymphocytes The lamina propria consists
of cells, fibers, blood vessels embedded in amorphous
ground substances.
I. Cells: Different types of cells present are:
a. Fibroblast
b. Mast cells
c. Macrophages
d. Inflammatory cells.

Fig. 1.6: Non-keratinized epithelium
II. Fibers: The connective tissue fibers are produced by
fibroblasts and can be divided into:
a. Collagen fibers
b. Reticulin fibers
c. Oxytalan fibers
d. Elastin fibers.

Collagen type I forms the bulk of the lamina propria
and provides the tensile strength to the gingival tissues.
TOOTH-SUPPORTING STRUCTURES
Tooth-supporting structures include, the periodontal
ligament, cementum and alveolar bone.
PERIODONTAL LIGAMENT
Definition
The periodontal ligament is a connective tissue structure
that surrounds the root and connects it with the bone.
Structure
The periodontal ligament space has the shape of an
hourglass and is narrowest at the mid-root level. The
width of periodontal ligament is approximately
0.25 mm ± 50 percent.
Cellular Composition
Cells of periodontal ligament are categorized as:
1. Synthetic cells
2. Resorptive cells
3. Progenitor cells

Fig. 1.7: The principal group of fibers
4. Other epithelial cells
5. Connective tissue cells.
Extracellular Components
1. Fibers:
• Collagen
• Oxytalin.

Fig. 1.8: Secondary group of fibers
2. Ground substance:
• Proteoglycans
• Glycoproteins.
The principal fibers of periodontal ligament are
arranged in six groups that develop sequentially in the
developing root. They are:
• Trans-septal group
• Alveolar crest, horizontal, oblique, apical and inter-
radicular fibers.

Structures Present in the Connective Tissue
1. Blood vessels
2. Lymphatics
3. Nerve innervation
4. Cementicles.
Blood vessels: Periodontal ligament is supplied by branches
derived from three sources dental, interradicular and
interdental arteries.
ALVEOLAR BONE
Definition
It is that portion of the maxilla and mandible that forms
and supports the tooth socket (alveoli).
Parts
Alveolar bone consists of the following:
1. Inner and outer cortical plate.
2. The bone lining the socket.
3. An interior portion of cancellous bone.
The bone lining the socket is also compact bone and
can be known as any of the following:
1. Bundle bone, since bundles of Sharpey’s fibers from
the periodontal ligament are embedded in it.

Fig. 1.9: Showing alveolar bone proper
2. The cribriform plate, because it is perforated by
numerous vascular channels.
3. Alveolar bone proper, as it provides direct bony support
for the teeth.
4. Lamina dura, which is radiographically seen as a dense
plate.
Composition
It has two basic constituents:
a. The cells consist of osteoblasts, osteoclasts, and
osteocytes.

b. Extracellular matrix consists of 65 percent inorganic
and 35 percent organic matter.
CEMENTUM
Definition
Cementum is a calcified avascular mesenchymal tissue that
forms the outer covering of the anatomic root.
Cementum is a calcified avascular mesenchymal tissue
that forms the outer covering of the anatomic root.
Acellular cementum forms during root formation and
is seen at the coronal portion of the root, whereas cellular
cementum forms after eruption of the tooth and is seen
apically on the root.
Cementum consists of 46 percent inorganic matter and
the rest 90 percent organic being type I collagen and the
remaining consists of non-collagenous proteins.
Three types of relationships of cementum may exist at
the cementoenamel junction. In 60 to 65 percent of cases
cementum overlaps the enamel, in 30 percent edge-to-
edge but joint exists and in 5 to 10 percent the cementum
and enamel do not meet.

Fig. 1.10: Acellular/cellular cementum

DEFINITION
Dental Plaque
Dental plaque is an adherent intercellular matrix consisting
primarily of proliferating microorganisms, along with a
scattering of epithelial cells, leukocytes and macrophages.
Biofilms
According to the recent data (Widerer and Charaklis 1989)
biofilm is defined as the relatively undefinable microbial
community associated with a tooth surface or any other
hard, non-shedding material.
DENTAL PLAQUE AS A BIOFILM
Structurally dental plaque is now considered to be a
biofilm of complex and dynamic microbial community.
The intercellular matrix forms a hydrated gel in which
bacteria can survive and proliferate. Hence, biofilm
adheres firmly to the tooth surface and is resistant to
mechanical removal, as well as antibiotics.
TYPES OF DENTAL PLAQUE
Based on its relationship to the gingival margin, plaque is
differentiated into two categories, supragingival and
subgingival.

Periodontal Microbiology (Dental Plaque) / 19
Fig. 2.1: Supragingival plaque
Fig. 2.2: Subgingival plaque and calculus

Subgingival plaque can be further differentiated into:
• Attached plaque
• Unattached subgingival plaque.
Attached plaque can be tooth, epithelium and/or
connective tissue associated.
Fig. 2.3: Subgingival plaque bacteria associated with tooth
surface and periodontal health

COMPOSITION OF DENTAL PLAQUE
Bacteria + Intercellular matrix = Dental plaque
Bacteria make up approximately 70 to 80 percent of
total material.One mg of dental plaque is estimated to
contain 250 million bacteria. Other than bacteria,
mycoplasma, fungi, protozoa and viruses may be present.
Bacteria Associated with Periodontal
Health and Disease
See Table 2.1.
Health
• Actinomyces (viscosus and naeslundii)
• Streptococcus (S. mitis and S. sangius)
• Veillonella parvula, small amounts of Gram-negative
species are also found.
Table 2.1: Reclassification of periodontal bacteria
Previous status Current status
Wolinella recta Campylobacter rectus (C. rectus)
Bacteroides gingivalis Porphyromonas gingivalis (P. gingivalis)
Bacteroides intermedius Prevotella intermedia (P. intermedia)
Bacteroides melaninogenicus Prevotella melaninogenica
(P. melaninogenica)

Chronic Gingivitis
Gram-positive (56%), Gram-negative (44%) organisms
are found. Predominant Gram-positive species include,
S. sangius, S. mitis, S. oralis, A. viscosus, A. naeslundii,
Peptostreptococcus micros.
Gram-negative organisms are:
• Fusobacterium nulceatum
• Prevotella intermedia
• Veillonella parvula as well as Haemophilus, Capnocyto-
phaga and Campylobacter species.
Pregnancy-associated gingivitis
• Prevotella intermedia.
Acute necrotizing ulcerative gingivitis
• Spirochetes
• Prevotella intermedia.
Adult periodontitis
• Porphyromonas gingivalis
• Bacteroides forsythus
• Campylobacter rectus
• Eikenella corrodens
• Fusobacterium nucleatum

• Actinobacillus actinomycetemcomitans
• Peptostreptococcus micros
• Treponema, and
• Eubacterium species.
Viruses such as:
• EBV-1 (Ebstein-Barr virus)
• HCMV (Human cytomegalovirus).
Localized juvenile periodontitis
• Campylobacter rectus
• Bacteroides capillus
• Eubacterium brachy
• Capnocytophaga
• Herpes virus.
Generalized juvenile periodontitis
• Capnocytophaga
• Neisseria.

Refractory periodontitis
• Wolinella recta.
Abscesses of the periodontium
• Peptostreptococcus micros
• Porphyromonas gingivalis.

CALCULUS
Definition
Dental calculus is an adherent, calcified or calcifying mass
that forms on the surfaces of teeth and dental appliances.
Types
Depending upon the position of calculus in relation to the
marginal gingiva it is classified as:
1. Supragingival calculus.
2. Subgingival calculus.
Fig. 3.1: Supragingival calculus on the lingual
surfaces of lower anteriors

Calculus and Other Etiological Factors / 27
Fig. 3.2: Radiograph illustrating subgingival deposits in
lower anterior and posterior teeth

Fig. 3.3: Radiograph illustrating subgingival calculus in the
interproximal areas
Fig. 3.4: Subgingival deposits on the root surface of
extracted lower anterior tooth

Structure
The deposits of supragingival calculus are usually whitish-
yellow in color and can get stained by tobacco or food
pigments, consistency is hard and clay-like.
Subgingival calculus is usually dark-brown or greenish-
black in color and the deposits are firmly attached to the
tooth surface. Since they are hard and firm, it cannot be
removed easily
Composition
It consists of inorganic and organic components (Tables
3.1 and 3.2).
Table 3.1: Inorganic components
Component Dry weight (in percent)
Inorganic 70-90
Calcium 27-29
Phosphorus 16-18
Carbonate 2-3
Sodium 1.5-2.5
Magnesium 0.6-0.8
Fluoride 0.003-0.04
Crystal forms
Hydroxyapatite 58
Magnesium whitlockite 21
Octacalcium phosphate 12
Brushite 9

Table 3.2: Organic components
Component Dry weight (in percent)
Mixture of protein, polysaccharide 1.9-9.1
complexes, desquamated epithelial
cells, leukocytes and various
micro-organisms. Carbohydrate
(consists of glucose, galactose,
rhamnose, mannose)
Proteins 5.9-8.2
Lipids 0.2
KEY POINTS TO NOTE
Other Contributing Etiological Factors including
Food Impaction
1. Faults in the dental restorations and prosthesis are
referred to as iatrogenic factors.
2. From the periodontal point of view, 6 characteristics
of restorations are important:
a. Margins of restorations.
b. Contours and overhanging dental restorations.
c. Occlusion.
d. Materials.
e. Design of removable partial dentures.
f. Restorative procedures themselves.
3. Orthodontic therapy may affect the periodontium by,
directly injuring the gingiva due to over extension of

bands, favoring the plaque retention and changing
gingival ecosystem and creating unfavorable forces on
the supporting tooth structures.
4. Food impaction is defined as the forceful wedging of
the food into the periodontium.
5. Bruxism is the clenching or grinding of the teeth when
the individual is not chewing or swallowing. Clenching
is the closure of the jaws under vertical pressure.

INTRODUCTION
Inflammation of gingiva is termed as gingivitis. The
plaque microorganisms can exert its effect on perio-
dontium by releasing certain products (e.g. collagenase,
hyaluronidase, protease, chondroitin sulfatase) which can
cause damage to the epithelial and connective tissue
constituents.
STAGE I GINGIVITIS: THE INITIAL LESION
Clinically, no visible changes are seen except presence of
exudation of fluid from the gingival sulcus; hence, this
condition is called subclinical gingivitis.
The following features are observed in stage I gingivitis:
1. Classic vasculitis of vessels subjacent to the junctional
epithelium.
2. Exudation of fluid from gingival sulcus.
3. Changes in the coronal most portion of the junctional
epithelium.
4. Increased migration of the leukocytes into the
junctional epithelium and gingival sulcus.
5. Presence of serum proteins.
6. Loss of perivascular collagen.

Gingival Inflammation / 35
Fig. 4.1: Normal marginal gingiva
STAGE II GINGIVITIS: THE EARLY LESION
Clinically, erythematous gingiva and bleeding on probing
may be evident. Microscopic features of the early lesion
include:
1. All the changes seen in the initial lesion continue to
intensify.

2. The junctional epithelium may begin to show the
development of rete pegs or ridges.
3. Accumulation of lymphocytes (majority of them are T
cells) beneath the junctional epithelium.
4. Further loss of collagen fiber network supporting the
marginal gingiva.
5. Fibroblasts show cytotoxic alteration with a decreased
capacity for collagen production.
Fig. 4.2: Early lesion

STAGE III GINGIVITIS: THE ESTABLISHED LESION
Clinical changes include:
a. A bluish hue on the reddened gingiva due to impaired
venous return.
Fig. 4.3: Established lesion

b. The gingiva appears to be moderately to severely
inflammed.
Microscopically
1. Predominant inflammatory cell types are plasma cells
2. Proliferation, apical migration and lateral extension of
the junctional epithelium is seen. Early pocket
formation may or may not be present.
3. Further collagen destruction and continuing loss of
connective tissue substance seen in the early lesion.
STAGE IV GINGIVITIS: THE ADVANCED LESION
The advanced lesion is also known as phase of advanced
periodontal breakdown.
The following clinical and microscopic features are seen:
1. Persistence of features described in the established
lesion.
2. Extension of the lesion into the alveolar bone and
periodontal ligament leading to significant amount of
bone loss.

Progression from Health to Periodontitis
Clinically Histologically
Pristine condition → Health
↓ ↓
Clinically healthy → Initial lesion
↓ ↓
Early gingivitis → Early lesion
↓ ↓
Chronic periodontitis → Advanced lesion

Table5.1:Gingivainhealthanddisease
GingivalInhealthFactorsIndiseaseFactors
featuresresponsibleresponsible
ClinicalchangesDiseaseconditions
1.ColorCoral–VascularColorchangemaybeChronic•Vascularprolifera-
Pinksupply•Marginalgingivitistion(Erythematous)
–Thickness•Diffuse•Reductionofkera-
anddegreeof•Diffuseorpatchliketinizationowingto
keratinizationepitheliumcompres-
ofepitheliumVaryingshadesofred,Chronicgingivitissionbyinflamed
–Presenceofpigmentreddishblue,deepblue.tissues
containingcellsColorchangesfromAcutegingivitis
brightrederythema•A.N.U.G./H.I.V.(Erythematous)
–Shinyslategraygingivitis•Venousstasis
–Dullwhitishgray•Herpetic(Bluishred)
gingivostomatitis•Tissuenecrosis
•Chemicalirritation(Bluishred)
BlacklinefollowingtheBismuth,arsenicandPerivascularprecipita-
contourofmargin.mercurypigmentationtionofmetallicsulfides
insubepithelialconnec-
BluishredordeepblueLeadtivetissue,onlyinareas
linearpigmentationpigmentationofinflammationdueto
(Burtonianline)increasedpermeability
ofirritatedbloodvessel.
Violetmarginalline.Silverpigmentation
Systemicdiseases
causingpigmentation
Contd...

Clinical Features of Gingivitis / 43
Table5.1:Contd...
2.ContourMarginalgin-•ShapeofthetoothMarginalgingivabecomesChronicgingivitisInflammatorychanges
giva:ScallopedandthusalignmentrolledorroundedInterden-
andknifeedgedinthearchtalpapillabecomesblunt
andflat
Interdental•LocationandsizeofPunchedoutandcraterANUG
papilla:proximalcontactlikedepressionsatthe
Anterior:•Dimensionsoffacialcrestofinterdental
pyramidalandlingualgingivalpapillaextendingtothe
Posterior:embrasuresmarginalgingiva
tentshapedIrregularly-shapedChronicdesquamative
denudedappearancegingivitis
ExaggeratedscallopingGinginvalrecession
Apostrophe-shapedStillman’scleftDescribedbyStillmanas
indentationsextendingaresultoftraumafrom
fromandintothegingivalocclusionandbyBoxas
marginsforvaryingdis-aPathologicalpocket.
tancesonthefacialEnlargementofinter-
surfacedentalpapillawithno
LifesaverlikeenlargementMcCall’sfestoonenlargementofmarginal
ofthemarginalgingivagingiva(Pseudocleft)
(Canineandpremolar
facialregion)

Table5.1:Contd...
3.Con-FirmandCollagenousnatureof•Soggypuffinessthat•Chronicgingivitis•Infiltrationbyfluids
sistencyresilientlaminapropriaanditspitsonpressureandcellsofinflam-
(exceptfreecontiguitywiththematoryexudate
margins)mucoperiosteumof•Markedsoftnessand•Exudative•Degenerationof
alveolarbone.Cellularfriabilityconnectivetissueand
andfluidcontentofepithelium
tissue.•Firmleathery•Fibrotic•Fibrosisandepithe-
liumproliferation
•Diffusepuffinessand•Diffuseedemaof
softeningacuteinflammatory
origin
•Sloughing:grayishflake•Necrosiswithpseudo-
likeparticleofdebrisAcutegingivitismembraneformation
•Vesicleformation•Intercellularand
intracellularedema.
4.SizeNormalSumtotalofthebulkIncreasedGingivalenlargementIncreaseinfibersand
ofcellularandinter-decreaseincells–Non-
cellularelementsandinflammatorytype.
theirvascularsupplyIncreaseincellsand
decreaseinfibers–
Inflammatorytype.
Contd...

Table5.1:Contd...
5.SurfaceStipplingis•DuetoattachmentofLossofstipplingGingivitisDuetodestructionof
texturepresentthegingivalfibersto•Smoothandshiny•Exudativechronicgingivalfibersasa
(viewedbytheunderlyingbone.gingivitisresultofinflammation
drying)•Firmandnodular•Fibroticchronic
gingivitis
•Microscopicallyby•Peelingofsurface•Chronicdesqua-
alternateroundedmativegingivitis
protuberanceand•Leatherytexture•Hyperkeratosis
depressionsinthe•Minutelynodular•Noninflammatory
gingivalsurface.surfacegingivalhyperplasia
(Papillarylayerof
connectivetissue
projectsintothe
elevations)
6.Position1mmabove•Positionoftoothin•ApicallyplacedGingivalrecession•Toothbrushtrauma
thecemento-thearch
enamel•Rootboneangle•CoronallyplacedPseudo-pockets•Gingivalinflamma-
junction•Mesiodistalcur-tion
vatureoftooth•Highfrenumattach-
surfacement
•Toothmalposition
•Frictionfromsoft
tissue
7.BleedingIntactsulcularepithe-PresentDilationandengorge-
onliumandnormal•Chronicrecurrent,•Chronicgingivitismentofcapillariesand
probingcapillariesspontaneousbleeding•ANUG,thinningorulcerationof
orbleedingonslightSystemicdiseasessulcularepithelium
provocation

Fig. 5.1: Chronic gingivitis. The marginal and interdental
gingiva are smooth, edematous and discolored
Fig. 5.2: Papillary gingivitis

Fig. 5.3: Bleeding on probing
Fig. 5.4: Gingivitis—inflammatory type

Fig. 5.5: Gingivitis—fibrotic type
Fig. 5.6: Gingival recession due to inflammation

Fig. 5.7: Gingival recession associated with periodontitis
Fig. 5.8: Gingival recession associated with
tooth malpositioning

Fig. 5.9: Gingival recession associated with
faulty toothbrushing
Fig. 5.10: Stillman’s cleft in the lower gingiva

DEFINITION
“Pocket can be defined as deepening of the gingival
sulcus.” If this happens due to coronal migration of the
marginal gingiva it is called as gingival or pseudo-pocket.
Deepening due to apical migration of the junctional
epithelium is referred to as “true pocket.”
CLASSIFICATION OF POCKETS
1. Depending upon its morphology
a. Gingival/false/relative pocket.
b. Periodontal/absolute/true pocket.
c. Combined pocket.
2. Depending upon its relationship to crestal bone
periodontal pockets are further classified as:
a. Suprabony/supracrestal/supra-alveolar pocket.
b. Infrabony/intrabony/subcrestal/intra-alveolar
pocket.
3. Depending upon the number of surfaces involved:
a. Simple pocket—involving one tooth surface.
b. Compound pocket—involving two or more tooth
surfaces.
c. Complex pocket—where the base of the pocket is
not in direct communication with the gingival
margin. It is also known as spiral pocket.

The Periodontal Pocket / 53
Fig. 6.1: Types of pockets

4. Depending upon the nature of the soft tissue wall of
the pocket:
a. Edematous pocket.
b. Fibrotic pocket.
5. Depending upon the disease activity:
a. Active pocket.
b. Inactive pocket.
SUMMARY OF PATHOGENESIS OF
PERIODONTAL POCKET
First Event
Colonization of gram-positive bacteria supragingivally and
its extension into the gingival sulcus and conversion of
gram-positive aerobes to gram-negative anaerobes.
FIRST EVENT

Fig. 6.2: Schematic illustration of normal gingiva

Fig. 6.3: Accumulation of supragingival plaque

Fig. 6.4: Extension of supragingival plaque
into the gingival sulcus

Fig. 6.5: Detachment and apical migration of
junctional epithelium

Fig. 6.6: Phagocytic action of neutrophils

Fig. 6.7: Ulceration of pocket epithelium

Fig. 6.8: Periodontal pocket established

SECOND EVENT

Fig. 6.9: Probing of a pocket

TREATMENT OF PERIODONTAL POCKET
I. Treatment of pocket depends on the type of pocket

II. Treatment of suprabony and infrabony pockets

INTRODUCTION
Osseous defects are those defects, which are formed
as a result of destruction of alveolar bone due to perio-
dontal disease.
Fig. 7.1: Normal anatomy of alveolar bone
BONE DESTRUCTION PATTERNS IN
PERIODONTAL DISEASE
Horizontal Bone Loss
It is the most common pattern of bone loss in periodontal
disease.Theboneisreducedinheightbutthebonemargins
remain roughly perpendicular to the tooth surface.

Bone Loss and Patterns of Bone Destruction / 69
Fig. 7.2: Radiographic illustration of horizontal bone loss
Vertical or Angular Defects
They are those that occur in an oblique direction, leaving
a hollowed out trough in the bone alongside the root, the
base of the defect is located apical to the surrounding
bone. In most situations angular defects are accompanied
by infrabony pockets.
Angular defects are classified on the basis of number
of walls present as:
• One-walled or hemiseptal defect—one wall is present.

Fig. 7.3: Angular defect in relation to upper first molar

Fig. 7.4: Furcation involvement in relation to
mandibular first molar

Fig.7.5:Typesofangulardefects

• Two-walled defect—two walls are present.
• Three-walled or intrabony defect—three walls are
present (more common on mesial surfaces of upper
and lower molars).
• Combined osseous defect—the number of walls in the
apical portion of the defect are greater than that in its
occlusal portion.

PERIODONTAL DIAGNOSIS
Proper periodontal diagnosis is essential for successful
treatment. Hence diagnosis should first determine whether
disease is present; then identify its type, extent, distribution
and severity and finally provide an understanding of the
underlying pathologic processes and their cause.
CLINICAL DIAGNOSIS
Key Stages of Periodontal Diagnosis

Diagnosis of Periodontal Diseases / 77
Clinical Diagnosis with Detailed Case History
Recording

Examination

Investigations

Diagnosis

TREATMENT PLAN

DEFINITION OF PLAQUE CONTROL
It is the removal of microbial plaque and the prevention of
itsaccumulationontheteethandadjacentgingivalsurfaces.
BASIC APPROACHES FOR PLAQUE CONTROL
There are two basic approaches for plaque control:
1. Mechanical:
• Individual
• Professional—for subgingival plaque control, e.g.
scaling and root planing.
2. Chemical:
• Individual
• Professional.
Mechanical Plaque Control
Individual mechanical plaque control is achieved by:
I. Toothbrush: Manual or powered
II. Interdental aids:
• Dental floss:
– Unwaxed
– Waxed
• Triangular tooth picks:
– Hand-held
– Proxa-pic

Plaque Control / 85
• Brushes: Proxa brush, bottle brushes
• Yarns, gauze strips, pipe cleaners.
III. Others:
• Rubber tip stimulator
• Water irrigators.
Brushing motions in brushing techniques:
i. Horizontal:
• Reciprocating (Scrub)
ii. Vibratory:
• Bass method
• Stillman’s method
• Charter’s method
iii. Vertical sweeping:
• Rolling stroke
• Modified bass
• Modified Stillman’s
• Leonard
• Smithbell (Physiological technique)
iv. Rotary–Fones.

Fig. 9.1: Different types of toothbrushes

Plaque Control / 87
Fig. 9.2: Modified Bass method

Fig. 9.3: Modified Stillman’s method
Fig. 9.4: Charter’s method

Plaque Control / 89
A
B
Figs 9.5A and B: Powered toothbrush

Fig. 9.6: Interdental aids
Fig. 9.7: Types of embrasures with interdental cleansing aids

Plaque Control / 91
Chemical Plaque Control
Mechanical plaque removal remains to be a primary
preventive method to control dental diseases and it should
not be replaced by chemical plaque control. However,
chemical plaque control can be used as an adjunct to
effectively control gingival inflammation and prevent the
recurrence or progression of periodontal disease.
To date, only two agents have been accepted by ADA
for treatment of gingivitis: chlorhexidine digluconate mouth
wash and essential oil mouth rinse.
Classification of Antimicrobial Agents
Depending on antimicrobial efficacy and substantivity.
First Generation Agents: Reduces plaque scores by 20 to
50 percent, efficacy is limited by their poor retention in
the oral cavity. Hence, used 4 to 6 times daily (poor
substantivity)
Examples: Antibiotics, quaternary ammonium
compounds, phenols and sanguinarine.
Second Generation Agents: These are retained longer in
the oral cavity or tissues and slow release property provides

overall reduction in plaque score by 70 to 90 percent;
used 1 to 2 times daily (higher substantivity).
Example: Bisbiguanides.
Third Generation Agents: It should be effective against
specific periodontopathic organisms. Yet to be developed
clinically.

SUTURING TECHNIQUES
Interrupted Suture
a. Direct or loop suture
b. Figure of eight
c. Horizontal mattress
d. Vertical mattress
e. Distal wedge or anchor suture
f. Periosteal suturing.
Continuous Suture
a. Papillary sling
b. Horizontal mattress
c. Vertical mattress.

Suturing Techniques / 95
A
Fig. 10.1A

B
Fig. 10.1B

C
Figs 10.1A to C: Direct or loop technique. (A) The needle
penetrates from the outer surface of the first flap and engages
the inner surface of the opposite flap. (B) The suture is brought
back to the initial side. (C) Where the knot is tied

A
B
Figs 10.2A and B

C
Figs 10.2A to C: Interrupted figure-eight suture. (A) The needle
penetrates the outer surface of the buccal flap. (B) And then the
outer surface of the opposite flap. (C) The suture is brought to
the first flap and the knot is tied

A
Figs 10.3A and B
B

C
Figs 10.3A to C: Vertical mattress: Interrupted. (A) The needle
is inserted approximately 7 mm apical to the tip of the papilla,
emerging again from the epithelialized surface of the flap
2 to 3 mm from the tip of the papilla. (B) The needle is brought
back through the embrassure, where the technique is again
repeated lingually or palatally. (C) The knot is tied buccally

A
Figs 10.4A and B
B

C
Figs 10.4A to C: Horizontal mattress—interrupted. (A) The
needle is inserted 7 to 8 mm apical to one side of the midline of
the papilla, that is at the mesiobuccal line angle emerging again
4 to 5 mm through the epithelialized surface on the distobuccal
line angle. (B) The needle is passed through the embrassure
and the same maneuver is duplicated again on the lingual or
palatal surface. (C) Then the knot is tied buccally

A
Figs 10.5A and B
B

C
Figs 10.5A to C: Distal wedge technique or anchor suture.
(A) The needle is placed at the line angle area of the facial
surface, suture is anchored around the tooth. (B) Passed through
the inner surface of the opposite flap. (C) The knot is tied

Figs 10.6A and B: Periosteal suturing involves five steps. (1)
Needle penetration where needle point is perpendicular to bone,
(2)Rotationoftheneedlepoint,(3)Glide,whereneedlepointglides
against the bone, (4) Rotation, and (5) Exits out of the periosteum
and bone
A
B

A
B
Figs 10.7A and B

C
D
Figs 10.7C and D

E
Figs 10.7A to E: Independent sling suture. (A) The needle is
inserted on the facial papilla, a sling is placed on the palatal
surface. (B) The facial papillae were sutured together. (C) When
the last tooth is reached, the suture is anchored around it. (D) The
palatal flaps are sutured together in a similar fashion. (E) Final
knot is placed

A
B
Figs 10.8A and B

C
D
Figs 10.8C and D

E
F
Figs 10.8E and F

G
H
Figs 10.8G and H

Figs 10.8A to I: Continuous vertical/horizontal mattress sutures:
Technique is identical to independent papillary sling except
that vertical or horizontal mattress sutures are substituted for the
simple papillary sling
I

DEFINITIONS
• Gingivectomy is the excision of the soft tissue wall of
the pocket (Its objective is the elimination of pockets).
• Gingivoplasty is the recontouring of gingiva that has
lost its physiologic form rather than elimination of
pockets.
Thesetwoproceduresareperformedtogetheralthough
they may be considered separately for teaching purposes.
TYPES OF GINGIVECTOMY
1. Surgical gingivectomy.
2. Gingivectomy by electrosurgery.
3. Laser gingivectomy.
4. Gingivectomy by chemosurgery.
Surgical Procedure
Step 1: The pockets on each surface are explored with a
periodontal probe and marked with the pocket marker.
Step 2: Periodontal-knives are used for incisions on the
facial and lingual surfaces as auxiliary instruments, Bard
Parker blades No. 11 and 12 and scissors are then used.
Discontinuous or continuous incisions may be used. The
incision should be beveled at approximately 45 degrees

Gingivectomy / 117
A
B
Figs 11.1A and B

C
D
Figs 11.1C and D

Gingivectomy / 119
Figs 11.1E and F
F
E

Figs11.1AtoG:Gingivectomy.(A)Preoperativeview.(B)Probing
of pocket depth. (C) Pocket marking. (D) Strip of gingival tissue
after gingivectomy. (E) Gingival contouring (immediately after
gingivectomy). (F) After healing—facial view. (G) Lingual view
to the tooth surface and should recreate as far as possible
the normal festooned pattern of gingiva.
Step 3: Remove the excised pocket wall. Clean the area
and closely examine the root surface for any deposits.
Step 4: Carefully curette out the granulation tissue and
remove any calculus and necrotic cementum so as to leave
a clean and smooth root surface.
Step 5: Cover the area with surgical pack.
G

DEFINITION
A periodontal flap is a section of gingiva and/or mucosa
surgically-elevated from the underlying tissues to
provide visibility of and access to the bone and root surface.
Fig. 12.1: Outcome of periodontal therapy

Periodontal Flap / 123
CLASSIFICATION
According to the Thickness of the Flap/Bone
Exposure after Flap Reflection
The flaps are classified as:
a. Full thickness/mucoperiosteal flap—All the soft tissues
including the periosteum is elevated.
Fig. 12.3: Partial/split thickness flap
Fig. 12.2: Mucoperiosteal/full thickness flap

b. Partial thickness/mucosal flap/split thickness flap—
Reflection of only the epithelium and a layer of
underlying connective tissue, the bone is covered by a
layer of connective tissue including periosteum.
INCISIONS
For Conventional Flap:
1. Horizontal Incision:
• Internal bevel incision
• Crevicular incision
• Interdental incision
2. Vertical incision
• Oblique releasing incision
Fig. 12.4: Location of the internal bevel incisions
for the different types of flaps

Figs 12.5A and B: Horizontal incisions
A
B

A
B
Figs 12.6A and B: (A) Vertical incisions without involving
interdental papilla. (B) Location of vertical incision

Papilla Preservation Flap
Step 1: Crevicular incision is made around each tooth.
No incisions through the interdental papilla.
Step 2: Papilla is usually incorporated facially, hence a
semilunar incision across the interdental papilla
in the palatal or lingual surface is made, which
is atleast 5 mm from the crest of the papilla
(the deepest curve).
Fig. 12.7: Papilla preservation flap—incisions

Fig. 12.8A: Facial view after sulcular incisions
have been made
Fig. 12.8B: Flap reflection

Fig. 12.8C: After curettage and root planning
Fig. 12.8D: Flap secured with sutures

Fig. 12.8E: The surgical site covered with
periodontal dressing
Step 3: The papilla is dissected from the lingual or
palatal aspect using Orban knife and elevated
intact with the facial flap.
FLAP TECHNIQUES FOR POCKET THERAPY
i. Modified Widman flap.
ii. Undisplaced flap.
iii. Apically-displaced flap.

Fig. 12.9A: Modified Widman flap—various steps (1-3)

Fig. 12.9B: Modified Widman flap—various steps (4-6)

B
A
Figs 12.10A and B

D
C
Figs 12.10C and D

Figs 12.10A to E: Modified Widman flap procedure.
(A) Preoperative view with probing. (B) Internal bevel and
crevicular incisions are placed. (C) Flap reflection and
degranulation. (D) Suturing with direct loop sutures.
(E) Pack placed
E

OSSEOUS SURGERY: AN INTRODUCTION
1. Osseous surgery can be of resective type and
regenerative types.
2. Under resective surgery the following techniques exist:
a. Vertical grooving,
b. Radicular blending,
c. Flattening of interproximal bone, and
d. Gradualizing marginal bone.
3. Reconstructive surgical techniques are subdivided
into—nongraft-associated and graft-associated new
attachment techniques.
4. Nongraft-associated new attachment procedures are:
a. Removal of junctional and pocket epithelium.
b. Prevention of epithelial migration.
c. Clot stabilization, wound protection and space
creation.
d. Preparation of the root surface.
5. Graft-associated techniques include grafts like
autogenous bone grafts, allografts, xenografts and
alloplasts which have been suggested and used
successfully.

Osseous Surgery / 139
A
B
Figs 13.1A and B

Figs 13.1A to C: Reconstructive periodontics. (A) Preoperative
view. (B) Defect is exposed after flap reflection and debridement.
(C) The defect is filled with hydroxyapatite crystals
C

MUCOGINGIVAL SURGERY: AN INTRODUCTION
1. Mucogingival surgery consists of plastic surgical
procedures for the correction of gingiva mucous
membrane relationships that complicate periodontal
diseases and may interfere with the success of
periodontal treatment.
2. Recently, it has been renamed as “Periodontal plastic
surgery”.
3. Most commonly performed mucogingival surgical
procedures are:
• Techniques to increase width of attached gingiva.
• Root coverage procedures
• Operations for removal of frena.
4. Techniques for increasing width of attached gingiva
are:
• Gingival extension operation by free soft tissue
autograft.
• Apical displacement of the pocket wall and other
techniques like fenestration operation and
vestibular extension operation.
5. Sullivan and Atkins have classified gingival recession
into, shallow-narrow, shallow-wide, deep-narrow and
deep-wide, PD Miller has modified this into Class-I,
Class-II, Class-III and Class-IV gingival recession.

Mucogingival Surgery / 143
6. Procedures for root coverage are divided into:
• Conventional, e.g. pedicle autografts.
• Regenerative procedures.
7. If the width of the attached gingiva is adequate in
the donor site the following conventional procedures
can be selected:
• Laterally-displaced flap
• Double papilla flap
• Coronally-positioned flap and semilunar flap.
8. If the donor site is associated with the inadequate
width:
• Free soft tissue autograft, and
• Subepithelial connective tissue grafts are available.
9. Regenerative procedures like guided tissue regenera-
tion (GTR) using various barrier membranes have
been used successfully to cover the denuded roots.
10. Frenectomy is the complete removal of frenum
including its attachment to the bone. Whereas
frenotomy is the incision and relocation of the
frenum to create a zone of attached gingiva between
the gingival margin and the frenum.

A
B
Figs 14.1A and B

C
D
Figs 14.1C and D

E
Fig. 14.1E

F
Figs 14.1F and G
G

H
Figs 14.1A to H: Free soft tissue autograft. (A) Gingival
recession with lack of attached gingiva. (B) Surgical bed
preparation. (C) Tin foil template placed on palatal donor
site. (D) Harvesting of graft tissue. (E) Harvested donor
tissue. (F) Donor site after harvesting. (G) Graft tissue sutured
with graft streching and vertical sutures. (H) Facial view
after healing

A
B
Figs 14.2A and B

C
D
Figs 14.2C and D

Figs 14.2A to F: Double papilla flap: (A) Recipient
site preparation. (B) Two vertical or oblique incision
at mesial and distal end of the defect. (C) Flaps are
reflected (partial thickness). (D) The transposed flaps
are sutured to obtain a single flap. (E) Final suturing.
(F) The area covered with periodontal dressing
E
F

Fig.14.3:Variousstepsindoublepapillaflap

A
B
Figs 14.4A and B

C
Figs 14.4A to C: Coronally-positioned flap: (A) Measure the
width and length of gingival recession (class I). (B) Two vertical
releasing incisions are placed. (C) Flap positioned coronally
and sutured

Fig. 14.5: Various steps in coronally-positioned flap

A
B
Figs 14.6A and B

C
D
Figs 14.6C and D

E
F
Figs 14.6E and F

Figs 14.6A to H: Coronally repositioned flap procedure. (A)
Preoperative view showing class I Miller’s recession. (B) Incision.
(C) Reflection of flap. (D) Coronally displaced flap. (E) Root
conditioning with tetracycline soaked cotton pellet. (F) Suturing
of coronally displaced flap. (G) Tin foil placed prior to pack
placement. (H) Facial view after healing
G
H

Figs 14.7A and B: Semilunar flap: (A) Class I gingival recession
in relation to 21-preoperative view, (B) Semilunar incision and
coronal displacement of flap
A
B

Fig. 14.8: Various steps in semilunar flap

A
B
Figs 14.9A and B

C
D
Figs 14.9C and D

E
Figs 14.9A to E: Subepithelial connective tissue graft: (A) A
recession defect at a maxillary right canine. (B) Recipient site
preparation. (C) Procuring connective tissue graft from the palate.
(D) The graft is placed in the recipient site and secured in position
with interrupted sutures. (E) Shows 3 months healing result

Fig. 14.10: Various steps in free connective tissue graft—
Donor site preparation

A
B
Figs 14.11A and B

C
D
Figs14.11AtoD: Frenectomyprocedure:(A)Acaseofhighfrenal
attachmentwithtensiontestbeingpositive.(B)Engagethefrenum
with a hemostat. (C) After removal of triangular resected portion
of the frenum. (D) The wound is closed with interrupted sutures

Fig. 14.12: Various steps in frenectomy

Index
A
Acellular cementum 15
Alveolar bone 55
Angular defects 69
B
Blood vessels 12
Bone destruction patterns in
periodontal disease
68
horizontal bone loss 68
vertical or angular defects 69
C
Calculus 26
composition 29
inorganic 29
organic 29
structure 29
types 26
subgingival calculus 26
supragingival calculus 26
Cells 7
fibroblast 7
inflammatory cells 7
macrophages 7
mast cells 7
Charter’s method 88
Chronic gingivitis 22
Clinical features of gingivitis 41
Coronally-positioned flap 155
Cribriform plate 13
D
Dental plaque 18
composition 21
types 18
subgingival 18
supragingival 18
Dental plaque as a biofilm 18
E
Ebstein-Barr virus 23
F
Fibers 8
collagen fibers 8
elastin fibers 8
oxytalan fibers 8
reticulin fibers 8
Flap reflection 128
Flap techniques for pocket
therapy 130
apically-displaced flap 130
modified Widman flap 130
undisplaced flap 130

Free connective tissue graft 165
Free gingival groove 3
Frenectomy 143, 168
G
Generalized juvenile
periodontitis 23
Gingiva 2
attached 4
interdental 5
marginal 2
Gingiva in health and disease 42
Gingival inflammation 33
Gingival sulcus 3
Gingivectomy 115
types 116
gingivectomy by
chemosurgery 116
gingivectomy by
electrosurgery 116
laser gingivectomy 116
surgical gingivectomy 116
Gingivitis 34
advanced lesion 38
early lesion 35
established lesion 37
initial lesion 34
H
Human cytomegalovirus 23
I
Interrupted suture 94
J
Junctional epithelium 35
Juvenile periodontitis 23
K
Keratinized epithelium 6
L
Lamina dura 13
Lamina propria 7
Localized juvenile periodontitis 23
Lymphocytes 7
M
Markel cells 7
Modified Bass method 87
Modified Widman flap 131
Mucogingival surgery 141
N
Non-keratinized epithelium 8
O
Orthokeratinized epithelium 6
Osseous surgery 137

Index / 171
P
Periodontal diseases 75
clinical diagnosis 76
examination 78
investigations 79
periodontal diagnosis 76
treatment plan 81
Periodontal flap 121
classification 123
incisions 124
for conventional flap 124
papilla preservation flap 127
Periodontal pocket 51
classification 52
pathogenesis 54
first event 54
second event 62
treatment 64
Plaque control 84
basic approaches 84
chemical plaque control 91
mechanical plaque
control 84
R
Refractory periodontitis 24
S
Semilunar flap 161
Stillman’s method 88
Subepithelial connective tissue
graft 164
Suturing techniques 94
continuous suture 94
interrupted suture 94
T
Tooth-supporting structures 9
alveolar bone 12
composition 13
parts 12
cementum 14
periodontal ligament 9
structure 9
U
Undisplaced flap 130
V
Vertical incisions 126
W
Wolinella recta 24

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