Try-in stageand denture insertion

Question 1

Step 1

Answer 1

Clean and disinfect the denture

Question 2

Step 2

Answer 2

Insert the mandibular denture and check for stability, overextensios or underextensions. If unstable a new definitive impression is indicated

Question 3

Four aspects of the denture should be assessed

Answer 3

Occlusal relations
Occlusal planes
Gingival matrix
Speech

Question 4

Occlusal relations

RVD-OVD= FWS

Answer 4

1. Vertical
2. Antero-posterior or Sagittal
   OVD should include RCP and ICP
3. Coronal intermaxillary relations
   All denture posterior teeth and canines should meet simultaneously and evenly in RCP

Question 5

Occlusal planes

Answer 5

Incisal plane
Left and right posterior occlusal planes
Plane of the mandibular teeth

Question 6

Right and Left occlusal planes

Answer 6

They should be parallel to the alar-tragus line and instruments such as Fox occlusal plane guide may be used to confirm the plane

Question 7

Plane of the mandibular teeth

Answer 7

Resting tongue should overle the lingual aspects of the lower teeth and this may be demonstrated to good effect at the trial denture stage to augument lower denture stability

Question 8

Bilabial sounds

B, P, M

Answer 8

Insufficient support from lips by teeth or denture affceted by sagittal position of teeth and thickness of the labila flange

Question 9

Labiodental sound

f, v

Question 10

Linguodental sounds

th

Answer 10

tongue extends slightly between the upper and lower anterior teeth. Sound is made closer to the alveolus than tip of teeth