Instruments Flashcards
Name the typical parts of a dental instument
Handle, shank, blade (working end)
Name the instrument
3 Explorer
Name the instrument
3CH Pigtail Explorer
Name the instrument
17 explorer
Name the instrument
23 explorer
Name the instrument
Curved #2 Nabers Probe
For detection of furcation areas w colored markings at 3, 6 ,9 & 12mm
Name the instrument
EXD 11-12 explorer
Name the instrument
Marquis Color-coded Probe
Markings are in 3mm calibrations
Name the instrument
Michigan “O” Probe
Marking at 3, 6 and 8mm
Name the instrument
UNC 15 probe
a 15mm long marked at each mm and color coded at the 5th, 10th and 15th mm
Name the instrument
Univ of Michigan “O” Probe w Williams markings
markings at 1,2,3,5,7,8,9 & 10mm
Name the instrument
WHO Probe
0.5mm ball at tip with markings at 3.5, 8.5 and 11.5mm and color coding from 3.5-5.5mm
Name the probes
A= Marquis color coded
B= UNC 15
C= Univ Michigan “O” probe w Williams markings
D= Michigan “O” probe
E= WHO probe
What is this explorer?
3CH pigtail
Pigtail
What is this instrument?
3 explorer
What is this scaling instrument?
curette
used subgingival; each working end has a cutting surface on both sides of the blade and a rounded toe
two types- universal & Gracey
What is this scaling instrument?
Chisel
What is this scaling instrument?
file
What is this scaling instrument?
hoe
What is this scaling instrument?
sickle scaler
What are the basic characteristics of this instrument?
Sickle scaler
triangular shape
double cutting edge
pointed tip
used supragingival with pulling stroke
Name the curette type, as seen from the toe
A= Universal Curette; blade is 90 degree angle to the lower shank
B= Gracey Curette; blade is 70 degree angle from the lower shank
Describe the gracey curette
What are these different Gracey designs?
Standard, After 5, Mini-Five, Micro Mini-Five
(all #1-2)
After 5 has a 3mm longer terminal shank
The Mini and Micro Mini have shorter blades to allow increased access and less tissue trauma
What is this a depiction of?
The Gracey Curvette blade compared to the Gracey Curette. The blade is 50% shorter with upward curve. Allows closer adaptation but risks gouging/grooves in tooth surface.
How do you determine the correct cutting edge of the Gracey curette?
When viewed from directly above the face of the blade, the correct cutting edge is the one forming the larger outer curve.
What is the 2-point contact used for dental hoe?
What are these and their use?
Diamond files for final finishing of root surfaces
What are these and what is their use?
Quetin curettes; hoes with shallow half-moon radius used for the roof or floor of a furcation
What are these?
Metal prophy angle with rubber cup and brush
Which is the correcct blade angulation for scaling and root planing?
B- 45 to 90 degrees.
A is correct for blade insertion= 0 degrees
D is correct for gingival curettage (>90 degrees)
What is depicted here?
Subgingival scaling
A- curette is inserted w blade flush against tooth
B- working angulation established 45-90 degrees
C- lateral pressure applied and scaling stroke in coronal direction
What is the cutting edge?
Cutting edge of a curette is formed by the angular junction of the face and lateral surface of the instrument. When sharp, the edge is a fine line.
Name the sharpening stones
Top to bottom:
Flat India stone
Arkansas Stone
Cone-shaped Arkansas stone
Ceramic Stone
Flat, 1-sided diamond sharpening cards (Extra fine, fine & medium grit)
What is the correct sharpening angle to maintain the cutting edge of a sickle scaler or curette?
The sharpening stone forms a 100 to 110-degree angle with the face of the instrument. This preserves the 70-80 degree angle between the face and lateral surface.
What is the angle for sharpening a chisel?
When the entire bevel contacts the stone, the angle between the instrument and stone is 45 degrees. The cutting edge will be maintained if this angle is used and the instrument pushed along the stone.
How does the sonic scaler tip travel?
In an elliptical or orbital pattern with frequency 2000-6500 cycles/sec.
How does a magnetostrictive ultrasonic device work?
Operates at 18000-50000 cycles per sec
Uses metal stacks that change direction as electricity is applied
Tip works in an elliptical or orbital pattern
4 working surfaces
How many working surfaces does the piezoelectric scaler tip have? Pattern? Frequency?
2 surfaces, linear pattern, 18K-50K cycles/sec
Name the instrument?
Kirkland gingivectomy knife
Name the instrument
Orban interdental knife
Name the instrument
Distinguishing feature?
Pritchard surgical curette
Surgical curettes have wider blades than those used for scaling and root planing.
Name the instrument
back action surgical chisel
Name the instrument
Woodson periosteal elevator
Name the instruments
Ochsenbein chisels, paired w cutting edges in opposite directions
The semicircular indentation on both sides of the shank allows the instrument to engage around the tooth and into the interdental area
What type of incision is this?
External bevel incision or gingivectomy
Type of incision?
Internal bevel incision.
starts at the surface of gingiva and is directed apically to crestal bone. Incision from which the flap is elevated
Name the instrument
Schluger interproximal file
Name the instrument
Sugarman interproximal file
What are these instruments?
Back action chisels
