Any restorative material that is placed adjacent to a vital pulp can induce ___________ effects.
biological
Two most important characteristics of
... [Show More] dental materials close to pulp
-remaining __________ thickness
-material __________ ability
dentin
sealing
If a residual layer of dentin is more than _____-_____, no apparent pulp damage is observed in pulp studies
1-0.5mm
The ability of a material to perform with an appropriate host response in a specific application
biocompatibility
Living cells interact and attach to different materials in different ways. The nature of that interaction may have immense influence on ____________ and thereby cell fate. Can cause phagocytosis and cytokine release.
gene expression
T/F the oral environment is one of the harshest environments in the body and is subjected to high and varying forces
true
An alloy that is formed by reacting mercury with silver, copper, and tin, and which may also contain potassium, zinc, and other elements to improve handling characteristics and clinical performance
dental amalgam
Pulpal response to amalgam is due to
a.) free mercury in amalgam is toxic
b.) insertion procedure (pressure from condensing
insertion procedure
Which of the following materials has the highest thermal expansion
a.) composite
b.) amalgam
c) glass ionomer
d.) ceramic
amalgam
If remaining dentin thickness is <____mm, a liner should be used.
1.5mm
T/F Zinc oxide and eugenol can come in direct contact with the pulp.
false
Type 4 zinc oxide and eugenol is used as a ______________ material
temporary
permeability of dentin has been proven to be low but increases exponentially with residual dentin thickness of less than 0.5mm. It is lipophilic. High enough pH to kill bacteria but low enough in the pulp where no damage can be observed. Can be used as a base or provisional material
eugenol
eugenol may interfere with _______________.
composite resin
This material is mildly cytotoxic but effects reduce overtime. Bonds chemically to tooth and releases fluoride. Should not be used in direct contact with pulp because of cytotoxicity and low pH.
glass ionomer cement
The high molecular size of polyacrylic acid in ____________ makes it impossible to diffuse through dentin. However, modified ________________ has been shown to diffuse through dentinal tubules and reach dental pulp cells.
glass ionomer cement
modified glass ionomer
disadvantages of glass ionomer cement are high brittleness and _______________.
solubility
chelation is the chemical bond between _________ of hydroxyapetitie and _________ of GIC.
Ca2+
CO2-
The highest thermal expansion in glass ionomers is ____________________ glass ionomer
resin modified [Show Less]