Card Set Information
oral environment and pt considerations
what are five examples of what materials placed in the oral cavity must be?
nonreactive in acid or alkaline conditions
compatible with other materials
materials placed in the oral cavity must be: __________, ________, nonreactive in _______ or ______ conditions, _______ with other materials, and ______ acceptable
acid or alkaline
materials must be compatible in environments of? (5)
how many lbs of pressure is on the occlusal surface during mastication?
how many lbs per sq of pressure is there on a cusp tip during mastication?
dental materials must withstand forces (stress) of? (3)
each tooth is ideally suited for specific type of _____
how do posterior teeth resist crushing forces?
multi rooted to spread out force
stress=amount of force exerted from ______ an object
stress= ______ force resisting applied force
what do foods, beverages and medicines convert into?
desired materials have low ____ and _____ absorption
a ______ current is possible between two dissimilar metals?
what is an example of two materials that can produce glavanism?
gold against amalgum
t/f galvanism occurs with composite against amalgum
what is pulpal stimulation from electric current?
excessive contraction causes what?
leakage-pulls away from the tooth
what material can reduce thermal conductivity?
which materials have less expansion and contraction?
gold and procelain
what is described as hue, chroma and value?
t/f porcelain to metal crowns have poor light reflection
detection of restorative materials is ______ in dental hygiene
what is the most reliable on tooth colored fillings if you aren't sure?
what are three ways to detect different types of restorative materials?
visual, light, air, magnification
what is an example of galvanism?
amalgam contacting gold
an excessive film thickness may cause?
improper seating of restoration
microleakage may be responsible for? (3)