Rosenfuck Flashcards
1
Q
Highest causes for failed FPDs
A
Caries
Fracture
Uncemented
2
Q
Prevent restoration wear
A
minimize sliding contacts
Establish anterior guidance
Opposing contacts of same material
Control parfunction
3
Q
Most occclusal reduction vs least
A
Most reduction: most esthetic
Least reduction: Lease wear, Most retention
4
Q
Adhesive Porcelain metal Adhesive Metal oxide-metal Adhesive Porcelain-metal oxide Cohesive in procelain Cohesive in metal oxide Cohesive in metal
A
Adhesive Porcelain metal: No oxide
Adhesive Metal oxide-metal: Contaminated metal
Adhesive Porcelain-metal oxide: Contaminated oxide
Cohesive in procelain: max strength
Cohesive in metal oxide: excessive oxidation
Cohesive in metal: doesnt happen
5
Q
Anatomical contour waxing advantages
A
Even thickness of porcelain
Smooth transition between metal and porcelain
Accurate location of metal/porcelain junction
6
Q
Lab design factors to consider (5)
A
Even porcelain thickness Rounded internal angles 90 degree metal/porcelain junction Porcelain wrap around Metal thickness at least .3mm
