Dental Materials Exam Latest 2025 with
Complete Answers!!
mixture of 2 more metals - ANSWER Alloy
reaction that occurs when silver based alloy is mixed with mercury - ANSWER
Amalgamation
restorative material comp of silver based alloy mixed with mercury - ANSWER Amalgam
a chemical reaction b/w tin in the silver-based alloy and mercury that causes corrosion
in the amalgam - ANSWER Gamma- 2 phase
oxidation affecting a thin layer of a metal & its surface, not as destructive as corroision -
ANSWER Tarnish
oxidation from the interaction of two dissimilar metals in the prescence of a solution
containing electrolytes (saliva)- results in the breaksdown of Amalgam - ANSWER
Corrosion
the mechanical process of mixing the dental amalgam alloy with the liquid mercury in a
machine called an amalgamator - ANSWER Triturator
most widely used material in restorative dentistry= - ANSWER Metals
When silver based alloy is mixed with mercury, a liquid metal-the reaction that occur is
called? - ANSWER amalgamation which produces amalgam
, Dentistry uses metals for: - ANSWER -direct placement restorations: amalgam, gold foil,
stainless steel crowns
-indirect placement restorations- crowns, fixed partial dentures, PFM crown copings
-removable partial denture
-orthodontic wires and brackets
-instruments
-implants
Metals are good? - ANSWER conductors of electricity
Metallurgy - ANSWER : science of characterizing and making alloys
Noble metals - ANSWER : those elements and alloys that remain lustrous (don't tarnish)
over time: gold, silver, platinum ($), palladium & iridium
Base Metal Alloys - ANSWER Alloys containing less than 25% noble metals. Often alloys
of nickel and/or chromium
Amalgam components - ANSWER Silver (Ag)
Copper (Cu)
Tin (Sn)
Zinc (Zn)
Amalgam setting reaction has 3 phases
(the chemical reaction that occurs when alloy and mercury are mixed) has 3 phases= -
ANSWER 1. gamma phase
2. gamma-1 phase
Complete Answers!!
mixture of 2 more metals - ANSWER Alloy
reaction that occurs when silver based alloy is mixed with mercury - ANSWER
Amalgamation
restorative material comp of silver based alloy mixed with mercury - ANSWER Amalgam
a chemical reaction b/w tin in the silver-based alloy and mercury that causes corrosion
in the amalgam - ANSWER Gamma- 2 phase
oxidation affecting a thin layer of a metal & its surface, not as destructive as corroision -
ANSWER Tarnish
oxidation from the interaction of two dissimilar metals in the prescence of a solution
containing electrolytes (saliva)- results in the breaksdown of Amalgam - ANSWER
Corrosion
the mechanical process of mixing the dental amalgam alloy with the liquid mercury in a
machine called an amalgamator - ANSWER Triturator
most widely used material in restorative dentistry= - ANSWER Metals
When silver based alloy is mixed with mercury, a liquid metal-the reaction that occur is
called? - ANSWER amalgamation which produces amalgam
, Dentistry uses metals for: - ANSWER -direct placement restorations: amalgam, gold foil,
stainless steel crowns
-indirect placement restorations- crowns, fixed partial dentures, PFM crown copings
-removable partial denture
-orthodontic wires and brackets
-instruments
-implants
Metals are good? - ANSWER conductors of electricity
Metallurgy - ANSWER : science of characterizing and making alloys
Noble metals - ANSWER : those elements and alloys that remain lustrous (don't tarnish)
over time: gold, silver, platinum ($), palladium & iridium
Base Metal Alloys - ANSWER Alloys containing less than 25% noble metals. Often alloys
of nickel and/or chromium
Amalgam components - ANSWER Silver (Ag)
Copper (Cu)
Tin (Sn)
Zinc (Zn)
Amalgam setting reaction has 3 phases
(the chemical reaction that occurs when alloy and mercury are mixed) has 3 phases= -
ANSWER 1. gamma phase
2. gamma-1 phase
