Introduction

Question 1

Definition of Prosthodontics

Answer 1

Prosthodontics is the dental specialty pertaining to the diagnosis, treatment planning, rehabilitation and maintenance of the oral comfort, function, appearance and health of patients with clinical conditions relating to missing or deficient teeth or maxillofacial tissues by using biocompatible substitutes.

Question 2

What are the 4 branches of Prosthodontics

Answer 2

Removable Prosthodontics
Fixed prosthodontics
Implant prosthodontics
Maxillofacial prosthodontics

Question 3

Name all the stages in CD fabrication

Answer 3

1) History, exam, investigations, primary impressions, treatment planning, patient education + consent, request of study model and special trays from the lab

2) Border molding special trays, secondary impressions

3) Jaw registration, selection of teeth, mold and shade

4) Try in, patient consent to teeth set up

5) Denture adjustments and delivery, patient instructions

6) Patient review

Question 4

Outline the Cawood and Howell classification

Answer 4

1) Class I - dentate
2) Class II - immediately post extraction
3) Class III - well rounded ridge, adequate height and width
4) Class IV - knife edge ridge, adequate height, inadequate width
5) Class V - flat ridge, inadequate height and ridge
6) Class VI - depressed ridge with some basal bone loss evident

Question 5

Describe the differences of the classification of hard palate and ridge shapes

Answer 5

Hard palate: Square, Oval, Triangular
Ridge shape: U shape, V shape, oval

Question 6

List the effects of the tongue in complete dentures

Answer 6

1) Effect of the tongue during impression taking
2) Effect of the tongue position
3) Effect of the tongue space
4) Effect of the tongue size

Question 7

Classification of tongue position by Wright

Answer 7

Class 1: Tongue lies in the FOM, tip forward and slightly below the incisal edge of the anterior teeth

Class 2: Tongue flat and broad, still in same position

Class 3: Tongue retracted into the FOM with the tip curled upward, downward or into the body of the tongue

Question 8

Name the Etiologies of gagging

Answer 8

Anatomical factors
Physiological factors
Psychological factors
Systemic factors
Iatrogenic factors

Question 9

List the possible causes of an unsuccessful denture

Answer 9

Insufficient extension of denture base
Initial contact or unbalanced occlusion
Incorrect placement of upper anterior teeth
High Vertical occlusion
Unstable articulation
Inclination and level of occlusal plane

Question 10

What are the uses of radiographic investigations in a completely edentulous patient

Answer 10

To detect presence of root fragment, retained teeth, foreign bodies, any radiolucencies and radiopacities, location of mental foramen, thickness of the alveolar ridge, mucoperiosteum