Mingival Curettage PDF
Mingival Curettage PDF
Mingival Curettage PDF
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Definitions :
The term "gingival curettage" implies directing an operative instrument
against the gingival wall of the periodontal pocket in order to remove the
ulcerated epithelium covering the sulcus.
( Nestor & Lopez ,1977)
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Rationale:
the pockets into surgical wound. Curettage can be used alone as the separate procedure
after root planing has to perform or as in combination with root planing to eliminate the
pocket.
The end result of the therapy is that the remaining gingival wall will shrink via
resolution of inflammatory infiltrates and the drainage of tissue fluid from the
wound, the exposed connective tissue from the contiguous oral epithelium will re
epithelialize , the new lamina propria subjacent to the new sulcular lining and epithelial
attachment forms, and the microvascularization of the tissue will return to the original
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History :
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History :
1935-kronfeld proved that the bone in the peiodontal pockets was neither
necrotic nor infected but rather destroy by inflammatory process, and the
era of tissue curettage began as the attention was shifted to the soft tissue
The rationale for the radical treatment was supported by the authors
pocket.
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1948- Goldman discussed the rationale for curettage and differentiated
the cure can be accomplished when the diseased epithelium lining and
He later observed the soft tissue curettage with the use of ultrasonic
instruments.
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Terminology :-
Gingival curettage
Removal of the inflammed soft tissue
lateral to the pocket wall.
Subgingival curettage
Procedure that is performed apical to the
epithelial attachment, severing the connective
tissue attachment down to the osseous crest.
Inadvertent curettage
Some degree of curettage is done
unintentionally when scaling and root planing
is performed.
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Basic technique :
Curettage is a closed, definitive surgical procedure performed
under local anesthesia and aimed at pocket reduction, elimination,
reattachment, or new attachment.
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Indications :
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Contraindications :
1. Fibrotic tissue
2. Deep pockets ≥ 5mm
3. Furcation involvements
4. Medically compromised patient
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Basic Technique with a Curette
Instruments:
Gracey curettes
Universal curettes
Insertion of Curettage :
Sharp Gracey or Universal curette is inserted with
the cutting edge against the tissue so as to engage the
inner lining of pocket wall & junctional epithelium.
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Curette the soft tissue wall :
Curette is carried along the soft tissue in a horizontal stroke
The pocket wall is supported by gentle finger pressure on
the external surface
Several overlapping strokes are used to completely remove
the epithelium & underlying granulation tissue .
In subgingival curettage, the tissue attached to the bottom
of the pocket & alveolar crest are removed with a scooping
motion of the curette to the tooth surface.
Irrigation :
Irrigate the area to remove debris & press the tissue to the
tooth surface gently which enables the arrest of bleeding &
adaptation of soft tissue to the root surface
Suturing :
Indicated if the clot area has been disrupted & the papilla
have been separated.
Healing :
It will result in shrunken, firm well adapted & well
contoured tissue.
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Excisional New Attachment Procedure (ENAP)
Objectives :
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Indications
1. Suprabony pockets
2. Adequate keratinized tissue
3. When esthetics are unimportant
Contraindictions
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Advantages
Disadvantages
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Procedure :
Instruments
Surgical handle
(Bard parker no. 3)
surgical blades no. 11, 12, 15
Curettes
Technique
Scaling and root planing are performed at least 1 week before
the ENAP, which increases the healing potential
Anesthesia
Adequate anesthesia is given, after which pockets are checked
to ensure that the zone of keratinized tissue is adequate and that the
pockets do not exceed the mucogingival junction
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Incision :
With a no. 11 or no. 15 scalpel blade, a scalloped, partial-
thickness, inverse-beveled incision is made from the crest of the gingiva to the
base of the sulcus.
The incisions are carried facially, lingually, and
interproximally as far as possible. The papilla is thinned interproximally to
remove any inflammed connective tissue and the triangular wedge of
interproximal tissue. This tissue is difficult to remove once the flap is free.
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Irrigation
The area is flushed with normal saline to remove debris, blood
clots, and tissue tags.
Suturing
Interproximal sutures are used to position the tissue as closely as
possible to the presurgical height and to adapt the papillae and tissue
tightly about the necks of the teeth. Primary closure is desirable.
Dressing
A periodontal dressing is now placed interproximally, without
being forced.
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Clinical improvement was reported at 1 and 3 year
evaluations following the procedure but probing depths
increased slightly and the amount of newly gained
attachment decreased slightly at each postoperative
evaluation from 1 to 5 years. However, an overall gain of 1.5
mm in clinical attachment was still evident 5 years after the
treatment.
Studies by Yukna (1980) and associates suggest a trend
towards a relapse somewhere around the 5-year mark.
Since no clinically significant tissue loss occurs with this
technique, retreatment by the ENAP procedure every 5
years or so may well preserve the maximum amount of
attachment for the longest possible time.
Both subgingival curettage and ENAP have the advantage
of minimizing postsurgical recession and root sensitivity
because the free gingival margin is kept virtually intact and
tissue elevation is not a part of these procedures.
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ENAP Modification
In 1977, Fredi and Rosenfeld modified the technique by
advocating a partial-thickness inverse beveled incision down to the crest of
bone to completely remove tissue about the periodontal ligament. The flaps
were then sutured at the presurgical height . The technique is basically the
same in all other aspects
Drugs such as :
sodium sulfide
alkaline sodium hypochlorite solution (Antiformin),
phenol
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Ultrasonic Curettage.
The use of ultrasonic devices has been recommended for gingival curettage.
When applied to the gingiva of experimental animals, ultrasonic vibrations
disrupt tissue continuity, lift off epithelium, dismember collagen bundles,
and alter the morphologic features of fibroblast nuclei.
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CLINICAL APPEARANCE AFTER SCALING AND CURETTAGE
After 1 week,
The gingiva appears reduced in height
owing to an apical shift in the position of the gingival
margin. The gingiva is also slightly redder than normal,
but much less so than on previous days.
After 2 weeks
The normal color, consistency, surface texture, and
contour of the gingiva are attained, and the gingival
margin is well adapted to the tooth
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Clinical Appearance Of Gingiva
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HEALING FOLLOWED BY CURETTAGE
Visualization Of Microvascularization Of The Healing Periodontal
Wound Followed By Curettage
(Simao kon , H. Goldman et al 1969)
The connective tissue at the sulcus was exposed and in few animals
when epithelial cells remained they were at the tip of the margin, at the middle area of
the sulcus or at both locations.
Beyond the epithelial attachment the connective tissue was sometimes torn from over-
curettement. When the tissue was torn and the perfused material flowed into the
sulcus, more vascularization was seen and there was some Hemorrhaging. The capillary
loops in the rete peg area were easily observed due to the perfusion with carbon black.
No inflammatory cells were present in the sulcular area.
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Two Days.
In this animal the blood clot covers the entire sulcular area. There are no epithelial
cells from the tip of the margin to the cementum enamel junction( C E J ) .
The underlying connective tissue is still disorganized.
The connective tissue surface derived from this hand curettage is irregular but is corrected
by the blood clot which presents an even surface. A large perfused vessel seems
to give rise to the blood clot formation,
as demonstrated by the continuity between
the carbon black and the clot. No change could
be detected in the oral epithelium.
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Four Days.
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The sulcular epithelium is being formed by a proliferation of
the oral epithelium which migrates underneath the clot.
The subsulcular connective tissue is still disorganized.
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Six Days.
The epithelium already covers the cut surface of the connective tissue. It is very
thin, being formed by an average of five layers of flat epithelial cells. The
connective tissue is healed and there is no
apparent inflammatory infiltrate. A large
number of loaded small capillaries is present
directly beneath the sulcular epithelium.
At the cemento-enamel junction the bottom of
the long epithelial attachment and the insertion
of Group III fibers can be seen forming a well
collagenated area. Group I is still disorganized..
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Seven Days.
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12 Days.
The sulcular epithelium remains thin and is located at the cementum enamel
junction. Keratinization is present at the margin where the sulcular and oral
epithelium join. There is no inflammatory infiltrate
in the connective tissue which underlies the newly
formed sulcular epithelium. It is well collagenated,
and Group I fibers as well as the subsulcular capillaries
show some semblance of organization.
The tip of the margin is well vascularized
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16 Days.
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23 Days.
No significant change in the epithelium and vascularization can be observed;
however, Group I fibers seem to be better organized and there is more
delineation.
There are more dark spots of carbon black at the tip of the margin. Flat
cells, separated from the sulcular epithelium, form a cuticle that remains free at
the enamel space.
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31 Days.
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38 Days.
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Studies
1949 Henry M. Goldman conducted a study for a treatment of
intrabony pockets with subgingival curettage procedure and he
concluded that new bone formation has been achieved in all the
6 cases
1971 Herbert Oshrain, Albart Salkind conducted a study in
which , a contoured mylar strips were inserted into periodontal
pockets immediately after curettage, removed after ten minutes
and examined for microbial population.
A viable flora was present subgingivally which probably
represents remnants of a pre curettage population.
1977 Nestor Lopez , Mario conducted a comparative study
to check effects upon gingival inflammation by subgingival
scaling with root planing and curettage.
They concluded , the clinical appearance of gingiva after 14
days was similar in both groups where as the depth of gingival
sulcus recorded prior the treatment & 4 and 6 weeks following
treatment suggest that curettage accomplish a greater retraction
of the gingiva than subgingival scaling and root planing.
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Dennis et. Al. 1980 conducted his study for testing
short term clinical differences in periodontal status
after treatment with osseous recontouring and flap
curettage in humans.
Twelve systemically healthy patients with
bilaterally similar marginal periodontal destruction
received a standardized presurgical therapy.
The posterior segments of these patients were
then treated with osseous recontouring and flap
curettage.
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Following results are obtain in his study
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1986 Lorraine B Forgas , sherry Gound were conducted a study to
investigate the effect of Antiformin-citric Acid chemical curettage
Combine with SRP would significantly reduce pathogenic bacteria
of the periodontal pocket when compared to SRP alone.
No significant result were found
1988 G. Biagini , L. checchi et al were conducted a study to evaluate
Gingival repair in periodontitis were treated with scaling and root planing
Performed with ultrasonic and hand scalers.
In this study no differences were found in the histological features of repair
Process triggered by either type of scaler
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AAP Statement Regarding Gingival curettage
(2002)
The American Dental Association has deleted that code from the fourth edition
Of current Dental Terminology(CDT-4). In addition the American Academy
of Periodontology in its Guidelines for peiodontal therapy, did not include
Gingival curettage as a method of treatment
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Lindhe J, Nyman S. The effect of plaque control and surgical pocket
elimination on the establishment and maintenance of periondontal
health. A longitudinal study of periodontal therapy in cases of
advanced disease. J Clin Periodontol 1975;2:67–79.
Stern T, Everett F, Robicsek K. S. Robicsek a pioneer in the surgical
treatment of periodontal disease. J Periodontol 1965;36:265–268.
The American Academy of Periodontology; Glossary of Periodontal
Terms, 3rd ed. Chicago; The American Academy of Periodontology;
1992
Nabers, CL. Repositioning the attached gingiva. J Periodontol
1954;25:38–39.
Newman M, Sanz M, Nachnani S, Saltini C, Anderson L. Effect of a
0.12% chlorhexidine on bacterial colonization following periodontal
surgery. J Periodontol 1989;60:577–581.
Becker W, Becker BE, Ochsenbein C, et al. A longitudinal study
comparing scaling osseous surgery and modified Widman procedures.
Results after 1 year. J Periodontol 1988;59:351–365.
Trylovich D, Cobb C, Pippin D, Spencer, P, Killoy W. The effects of
Nd:YAG laser on in-vitro fibroblast attachment to endotoxin treated
root surfaces. J Periodontol 1992;63:626–632
Chace, R.: Subgingival curettage in periodontal therapy. J Periodontol
45:107, 1974
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Raust, G.: What is the value of gingival curettage in
periodontal therapy. Periodont Abst 17:142, 1969.
Beube, F.: A rationale approach to periodontal surgery.
Dent Clin North Am 4:425, 1960
Caton, J. and Zander, H.: The attachment between
tooth and gingival tissues after periodic root planning
and soft tissue curettage. J Periodontol 50:462, 1979
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