Prosthetics 3 - Stages for construction of partial dentures

Question 1

what occurs on the 1st clinical visit?

Answer 1

• history and examination
• treatment planning
• primary impression

Question 2

what are some components of the patient history?

Answer 2

• previous dental history

- previous medical history

Question 3

history & exam: what needs to be asked for denture making?

Answer 3

• were there previous attempts of denture making?
• were they successful?
• how long were they worn?
• what does pt think?

Question 4

examination: what should be assesed?

Answer 4

• soft tissues: are they healthy? does the pt require specific management before making new dentures?
• full dental charting, BPE, examination and drawing of current dentures
• examine occlusion: any index teeth?

Question 5

what are index teeth?

Answer 5

points of contact of opposing teeth, indicating intercuspal position

Question 6

what occurs during lab stage 1?

Answer 6

• production of primary casts (study casts)

- production of record blocks (occlusal rims)

Question 7

what are occlusion blocks/occlusal rims?

Answer 7

occlusion blocks consist of wax rims attached to well-fitting trial denture bases
they help to create maxillomandibular relation records, help to arrange teeth

Question 8

what happens on the 2nd clinical visit? requirement depends on?

Answer 8

occlusion stage (if required). depends on how many teeth the patient has and how clear the occlusal relationships are

Question 9

what determines the need for an occlusion visit?

Answer 9

whether the casts can be articulated without the need for record blocks

Question 10

record blocks are used for?

Answer 10

to record the correct occlusal vertical dimension when there is lack of sufficient tooth contact

Question 11

what happens during lab stage 2?

Answer 11

articulation of casts
design of partial denture
surveying
construction of special trays

Question 12

design of partial dentures: require? (4)

Answer 12

• surveyed casts
• examination of occlusion
• reference to previous design of dentures
• information of history and examination e.g. prognosis of teeth

Question 13

surveying: gives information on?

Answer 13

1. path of insertion of denture
2. areas around the teeth that may stop the denture being seated
3. areas around the teeth that are useful for holding the denture in

Question 14

design of partial dentures: what must happen regarding the casts beforehand?

Answer 14

casts must be articulated before partial dentures can be designed
(may or may not require occlusion stage, depending on patient and how much teeth present)

Question 15

3rd clinical visit: what happens?

Answer 15

1. review and discuss design of dentures with patient
2. tooth modifications/preparations e.g. rest seats or composite additions
3. secondary impressions in special trays
4. choose artificial teeth

Question 16

what happens during lab stage 3?

Answer 16

1. preparation of secondary (working) casts
2. construction of casting
3. setting of artificial teeth

Question 17

4th clinical visit: what happens?

Answer 17

try in stage - trial insertion

if there is metal casting as part of the denture, will need to be assessed for fit

Question 18

try in: what to take note and check for?

Answer 18

• check lab work
• insert try-in & check for:
  extensions
  adaptation
  retention
  occlusion & tooth position
  appearance

Question 19

lab stage 4?

Answer 19

• processing of denture
• conversion of wax parts into polymethylmethacrylate
• artificial teeth secured to denture

Question 20

5th clinical visit? what to assess?

Answer 20

fitting of prostheses
assess similar factors as trial insertion stage:
check lab work, fit denture and check:
extensions, adaptations, retention, occlusion, appearance
+ give instructions on care

Question 21

6th visit of patient?

Answer 21

ease pt

• listen for pt comments
• examine mouth
• adjust denture as required
• put pt on recall