Principles of Periodontal...
Transcript of Principles of Periodontal...
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Principles of Periodontal Instrumentation
Periodontology I - 4th year
23/2/2012
Dr. Murad Shaqman
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Outline
Classification of periodontal instruments
General principles of instrumentation
Principles of scaling and root planing
Ultrasonic and sonic instruments
Instrument sharpening
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Classification of periodontal Instruments
1.Periodontal probes.
2. Explorers
3. Scaling, root planing and curettage instruments
4. The Periodontal Endoscope.
5. Cleaning and polishing instruments
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Parts of Periodontal Instruments
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Periodontal Probes
• Used to locate and measure the periodontal pocket and
determine its configuration.
• Typically tapered, rodlike instrument calibrated in
millimeters, with a blunt, rounded tip
• Furcation areas ==> Nabers probe
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Periodontal Probes
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Periodontal Probes
• Nabers probe
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Explorers
• Used to locate subgingival deposits and carious areas and to
check the smoothness of the root surfaces after root planing.
• Designed with different shapes and angles
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Explorers
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Scaling and curettage Instruments
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Scaling and curettage Instruments
Sickle scalers:
flat surface
2 cutting edges
pointed tip
triangular cross section
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Scaling and curettage Instruments
Sickle scalers:
supra-gingival scaling
available in different
sizes and shank types
straight and curved
shanks
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Scaling and curettage Instruments
Curettes:
removes:
sub G calculus
root planing
gingival curettage
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Scaling and curettage Instruments
Curettes:
universal or site-
specific
round tip
semicircular cross
section
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Scaling and curettage Instruments
Curettes:
Universal:
2 cutting edges
used on any tooth
surface
blade curves in one
plane only
Area-specific (Gracey)
site-specific
single cutting edge
blade curves in 2 planes
blade is offset/ beveled
60 to the terminal shank
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Scaling and curettage Instruments
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Scaling and curettage Instruments
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Scaling and curettage Instruments
Universal curettes:
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Scaling and curettage Instruments
Gracey curettes:
#1-2 (anterior teeth)
#3-4 (anterior teeth)
#5-6 (anterior and
PM teeth)
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Scaling and curettage Instruments
Gracey curettes:
#7-8 (posterior teeth; facial
and lingual)
#9-10 (posterior teeth;
facial and lingual)
#11-12 (posterior teeth;
mesial)
#13-14 (posterior teeth;
distal)
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Scaling and curettage Instruments
Gracey curettes:
Modifications:
Rigid/Finishing
shank
After-five currettes
Mini-five
Micro Mini five
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Dental Endoscope
Perioscope
identify:
deep subgingival
deposits,
open margins
caries, ...
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Cleaning & Polishing Instruments
Rubber cups
Bristle brushes
Polishing tape
Air-powder polishing
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General principles of Instrumentation
Proper position of the patient and the operator
Visibility, illumination and retraction
Condition and sharpness of instrument
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General principles of Instrumentation
Proper position of the patient and the operator:
feet flat on the floor
thighs parallel to the floor
back and neck straight
resting elbows close to the patient’s mouth
Patient in supine position
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General principles of Instrumentation
Visibility, Illumination & Retraction
direct or indirect vision
direct or indirect lighting
retraction with mirror or index or both.
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General principles of Instrumentation
Condition & Sharpness of the Instruments
dull instruments:
fatigue
burnishing of calculus
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General principles of Instrumentation
Other aspects...:
Maintain a clean field
effective suction
gauze, cotton rolls
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General principles of Instrumentation
Other aspects...:
Instrument stabilization:
instrument grasp
finger rest
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General principles of Instrumentation
Other aspects...:
Instrument activation:
adaptation
angulation
lateral pressure
strokes
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General principles of Instrumentation
Other aspects...:
Instrument activation:
adaptation
angulation
lateral pressure
strokes
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General principles of Instrumentation
Other aspects...:
Instrument activation:
adaptation
angulation
lateral pressure
strokes
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principles of Scaling and Root Planing
Scaling: the process by which biofilm and calculus are
removed from both supragingival and subgingival tooth
surfaces. No deliberate attempt is made to remove tooth
substance along with the calculus.
Root planing: the process by which residual embedded
calculus and portions of cementum are removed from the
roots to produce a smooth, hard, clean surface
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principles of Scaling and Root Planing
Scaling & root planing (SRP) are not 2 separate procedures.
Proficiency in SRP is difficult and takes exercise.
Tactile and visual detection
left-over calculus results in persistent inflammation and
BOP
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Ultrasonic and sonic instruments
Sonic: consist of a handpiece that attaches to a compressed-air line and
uses a variety of specially designed tips. Vibrations at the sonic tip range
from 2500 to 7000 Hz
Ultrasonic:
Magnetostrictive: Cavitron® (elliptical)
Piezoelectric: Piezon®, P5 Newtron® (linear)
Alternating electrical current generates oscillations in materials in
the handpiece that cause the scaler tip to vibrate.
Vibrations range from 18,000 to 50,000 Hz.
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Ultrasonic and sonic instruments
Ultrasonic SRP:
No difference between hand & US instruments, choice
depends on clinical situation and clinician’s judgement
and experience.
US perform better in removing calculus from furcations.
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Ultrasonic and sonic instruments
Ultrasonic SRP:
Contraindications:
Pacemakers??
Patients with communicable diseases
Respiratory disease of immunosuppressed
Dental implants
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The End