CDT Implant Prosthetics Techniques 3

Question 1

Which material is preferred for implant abutments in high esthetic zones due to its tooth-like color and biocompatibility?

Accepted Answer

Zirconia (Y-TZP)

Answer

Zirconia (Y-TZP) offers excellent esthetics, biocompatibility, and adequate strength for single-tooth and short-span anterior implant abutments.

Question 2

What is the function of a 'transfer impression coping' (open-tray coping) in implant prosthetics?

Accepted Answer

It is picked up in the impression, directly capturing the implant position

Answer

Open-tray transfer copings are retrieved with the impression, accurately capturing the three-dimensional position of the implant analog in the cast.

Question 3

A technician is designing an implant-retained overdenture. Which attachment system provides the greatest degree of patient-adjustable retention through clip replacement?

Accepted Answer

Bar-clip attachment

Answer

Bar-clip systems allow incremental retention adjustment by replacing the clip inserts, offering a broad range of retention levels over the prosthesis lifespan.

Question 4

In the All-on-4 treatment concept, the two posterior implants are typically placed at what angle to increase bone engagement and avoid anatomical structures?

Accepted Answer

45 degrees

Answer

Posterior implants in the All-on-4 concept are tilted 45 degrees to engage more bone and avoid the maxillary sinus or mandibular nerve without grafting.

Question 5

Which type of impression technique is most accurate for capturing the position of multiple implants in different axial inclinations?

Accepted Answer

Open-tray splinted technique using polyether

Answer

Open-tray splinted impressions with polyether minimize coping displacement and distortion, achieving the highest accuracy for multiple divergent implants.

(CDT) Certified Dental Technicians Practice Test

(CDT) Certified Dental Technicians Practice Test

CDT Implant Prosthetics Techniques 3