Exam 1- Biomaterials Flashcards
sealants, flouride, chlorohexidine
preventative dent materials
replace, repair, or rebuild
restorative materials-direct (in mouth) and indirect (out of)
Auxillary materials
used to form, do not become a part of device (i.e. gypsum and dental wax)
composite material
mix of 2 of the 3 (metal, ceramic, or polymer)
example of composites
glass/resin/silica
mouth is usually ___ temp
warmer than RT
Class I device
low risk; good manufacturing
Class II
meet performance standards; most
Class III
requires data to support; for newer materials
Sets standards and regulations for america
ADA-1859
set the international standard
ISO
electrical insulators
covalent bonds-electrons don’t move
Metallic Bonds
Sharing of e- between two solids; electrons are free thus they are electrical and thermal conductors
Interatomic Primary Bonds
Metals are able to deform due to rearrangement of electric forces whereas ionic solids would have repulsive forces that cause cracks to form
Amorphous
irregular arrangement of atoms with no long range order upon solidification (glass and many polymers)