CDT Removable Prosthodontics 2

Question 1

Which type of denture base material is most commonly used in complete denture fabrication due to its ease of processing and patient acceptance?

Accepted Answer

Acrylic resin (PMMA)

Answer

Polymethyl methacrylate (PMMA) acrylic resin is the standard denture base material because it is easy to process, repair, and aesthetically acceptable.

Question 2

The post dam (posterior palatal seal) in a maxillary complete denture is designed to:

Accepted Answer

Create a peripheral seal to aid retention

Answer

The posterior palatal seal creates a peripheral seal at the vibrating line, preventing air from breaking the suction that aids denture retention.

Question 3

When surveying a cast for a removable partial denture, the surveying rod is typically positioned parallel to:

Accepted Answer

The path of insertion and removal

Answer

The surveyor analyzes undercuts relative to the proposed path of insertion so the RPD can seat and be removed without binding.

Question 4

A stress-breaker in a removable partial denture framework is used to:

Accepted Answer

Reduce forces transmitted to abutment teeth

Answer

Stress-breakers (stress relievers) introduce a flexible joint that reduces harmful torquing forces transferred to abutment teeth during function.

Question 5

Which occlusal scheme is generally recommended for complete dentures worn by patients with well-resorbed ridges?

Accepted Answer

Non-anatomic (monoplane) occlusion

Answer

Non-anatomic or monoplane occlusion reduces horizontal forces on resorbed ridges, providing greater stability during function.

(CDT) Certified Dental Technicians Practice Test

(CDT) Certified Dental Technicians Practice Test

CDT Removable Prosthodontics 2