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november 25th quiz

preclinical dental asst theory

QuestionAnswer
what are matrix bands made of? stainless steel
what are matrix bands with wings for? for deep cavities in gingival layer
who created cavity classification? G.V. Black
What is class I cavity? posterior & anterior - all teeth pits & fissures
what is class II cavity? posterior - proximal surfaces - mesial & distal
what is class III cavity? anteriors - interproximal
what is class IV cavity? anteriors - mesial incisal - facial & lingual
what is class V cavity? all teeth - cervical - facial or lingual
outer knob of tofflemier does what? holds band into slot
inner knob of tofflemier does what? makes matrix band bigger or smaller
spindle of tofflemier does what? holds matrix in place
diagnol slot of tofflemier does what? hold wings in place
guide channel of tofflemier does what? which way wings go
what are the 9 basic cutting bur shapes? round, inverted cone, plain fissure straight, plain fissure cross-cut, tapered fissure straight, papered fissure cross cut, end cutting, wheal bur, pear bur
what is the round bur used for? used 1st to access the cavity and for decay removal
what is the number series for the round bur? 1-8 and 10
what is the inverted cone bur used for? removes decay and makes undercuts in the cavity preparation
what is the number series for inverted cone bur? 311h, 34-39, 36L, 37L
what is the plain fissure straight bur used for? forms walls for the cavity prep
what is the number series for the plain fissure straight bur? 55-60, 57L, 58L
what is the plain fissure cross-cut bur used for? forms walls for the cavity prep
Created by: 1371661736