Exam 2: Burs, Classes, instruments, rando Flashcards
What is the narrowest part of the preparation?
the isthmus
What is the junction between the unprepared tooth and the prepped tooth?
the Cavo-Surface
What is a line angle?
the line between any 2 walls or floors
What is a point angle?
the point between any 3 walls or floors
Cavity Prep Class: Pits and fissures of occlusal surfaces of posterior teeth (premolars and molars)
Class I
Cavity Prep Class: Pits in the occlusal 2/3 of facial and lingual surfaces of molars
Class I
Cavity Prep Class: Lingual pits of maxillary incisors In the top 2/3 of tooth
Class I
Cavity Prep Class: Which teeth can have a Class I prep?
All! posteriors and anteriors
Cavity Prep Class: Smooth proximal surfaces of posterior teeth (premolars and molars)
Class II
Cavity Prep Class: Smooth proximal surfaces of anterior teeth (incisors and canines)
Class III
Cavity Prep Class: Smooth proximal surfaces of anterior teeth (incisors and canines) which involve the incisal edge as well
Class IV
Cavity Prep Class: Smooth surfaces of all teeth in gingival 1/3 of facial and lingual surfaces
Class V
Cavity Prep Class: Incisal edges of anterior teeth and occlusal cusp tips of posterior teeth
Class VI
What color is the High Speed handpiece? What is the max RPM range?
RED! 300-400K RPMs
What color is the Slow speed hand piece? What is the max RPM range?
Green….30K RPMs
What are the two types of heads for the slow speed?
Latch type and friction grip
What is the diameter of the explorer?
0.5 mm
Perio probes come in either ___mm increments or ___mm increments
1mm or 3mm
The #__ hatchet has a 1mm width. The #__ has a 1.5 mm width.
10…#15
How many mm wide is a #12 hoe?
1.2 mm
Hatchets are for ________ teeth. Hoes are for ______ teeth.
Hatchets=mandibular…..hoes=maxillary
On a hoe, the _____ end touches the tooth and the _______ end faces the inside of the preparation.
flat….beveled
What is the prime example of a margin trimmer that helps trim away excess material from the gingival margin?
14L DeMeo Carver
What are spoons for?
removing decay
What is the instrument that if Dr. Huang would choose if he was stranded on an island and could only have 1 instrument? What are its 4 functions?
The plastic filling instrument….1.Composite 2.Amalgam 3.Retraction 4.Separating Teeth
What are the coated composite instruments called?
XTS instruments
What do we use for gold and amalgam bands?
burnishers!
What are the 4 types of burnishers?
- Ball 2.egg 3.Beavertail 4.Acorn
A carbide bur is made of ______ carbide added to ______. Which way does a carbide cut.
tungsten….steel…clockwise
Diamond burs are diamond particles baked into a ______ substrate.
nickel
Which bur do we use with ceramics?
diamond
These are ______ burs….1/4,1/2,1,2,4,6,8
ROUND
These are ______ burs….33, 33.5…34
Inverted Cone
These are _____ burs…379
Egg
These are ______ burs…135
Needle
These are ______ burs…56,57
Straight
These are ______burs…330,244,245
Pear
These are ______ burs….169
Tapered
These are ______ burs…956
end-cutting
These are ______ burs…856
Tapered Chamfer
The more flutes on your carbide, the ______ the cutting.
smoother
What # bur is an example of a rounded edge bur?
247
