Which margin design is most appropriate for a porcelain-fused-to-metal crown with a porcelain butt margin?A. ChamferB. Feather-edgeC. Radial shoulderD. 90-degree shoulder
Answer: d) All of the above
A dentist prepares a mandibular first molar for a full metal crown. The total occlusal convergence measured between opposing axial walls is 14 degrees. Which of the following is true? A) The preparation has ideal retention. B) The preparation lacks resistance form. C) The preparation requires a shoulder finish line. D) The pulp will likely be exposed. fixed prosthodontics mcqs
Resistance form prevents the restoration from being dislodged by apical or oblique forces. Key factors include the height-to-width ratio of the preparation; a taller preparation provides better resistance against tipping forces. Which margin design is most appropriate for a
Fixed prosthodontics involves the fabrication and placement of dental restorations that are permanently attached to teeth or dental implants. These restorations can be used to replace missing teeth, restore damaged teeth, or improve the appearance of teeth. Fixed prosthodontics includes various types of restorations, such as: Radial shoulderD
Answer: b) Mutually protected occlusion