Final Flashcards
1
Q
Six requirements for direct retainer
A
Passivity Reciprocity Retention Encirclement Support (Rests) Stabilization: reciprocation, horizontal
2
Q
When is mesh indicated
A
interocclusal distance is limited
3
Q
High temp investments
Which has highest melting point
Which is used for ticonium
A
Phosphate bonded
Silicate bonded (highest melting point)
Gypsum bonded…used for ticonium
4
Q
Cingulum rest
Mesiodistal
Faciolilngual
Deep
A
MD: 2.5-3
FL: 2mm
Deep: 1.5
5
Q
Incisal rest
A
- 5mm wide
1. 5 deep
6
Q
Primary and secondary stress bearing areas
A
Maxillary Primary: Posterior Alveolar ridge, Hard palate Secondary: Anterior alveolar rige Mand Primary: buccal shelf, retromolar pad Secondary: alveolar ridges
7
Q
flexibility of impression materials
A
Polysulfide, silicone, polyether least
8
Q
Elastic recovery of impression materials
A
SIlicone, polyether, polysulfide
