Denture try in, insertion and review

Question 1

What are some checks to do before the patient arrives?

Answer 1

• Correct Lab work and patient
• Lab work not damaged and what you expect
• Mould and shade what you requested

Question 2

What are some checks to do before you insert the try in?

Answer 2

• Are try in bases stable on casts?
• Are borders smooth and rounded with no sharp edges
• Is border extension shaped to depth and width of functional sulcus
• Check occlusion on articulator (is there anterior open bite we don’t want)
• Are centre lines coincident and pin on table
• Check overbite and overjet
• Even contacts on molars
• Position of teeth on ridge

Question 3

What to do if post dam has not been cut on upper cast?

Answer 3

• Draw on cast site with indelible pencil
• Prescribe technician to cut post dam

Question 4

What is the try in checklist?

Answer 4

• Retention and stability (not as good as finished remind pt)
• Base extensions
• LIMBO
• Position of teeth compared to soft tissues
• Vertical dimension FWS
• Even contact in occlusion
• Speech
• Aesthetics

Question 5

In regard to speech what are you looking for with try in?

Answer 5

• Listen to f and v sounds to assess contact between incisors and lower lip
• Not too much whistling on s sounds otherwise OVD to be increased
• Teeth slightly apart during speech
• If teeth make contact during speech = insufficient FWS

Question 6

What is the bull rule?

Answer 6

Buccal Upper (palatal surface of buccal cusp) and Lingual Lower (buccal surface of lingual cusp)
- Adjust contacting surfaces rather than tips of cusps

Question 7

What are the checks you should do before you insert the final dentures?

Answer 7

• Check fit, polished and occlusal surface for blebs, sharp edges, acrylic flash and quality of polish
• Ensure no porosity or inclusions in acrylic
• Look for large undercut areas that may prevent seating or cause pain
• Happy with border extension?

Question 8

What can cause pain in pt mouth from final denture?

Answer 8

• Roughness
• Extension into undercuts
• Overextension
• Smooth and polish as required

Question 9

How to fix poor lower stability due to overextension in anterior labial?

Answer 9

• Paint on PIP
• Insert and manipulate lip until PIP rubs off
• Adjust CL where PIP rubs off

Question 10

Where is discomfort commonly from?

Answer 10

• Undercut areas like tuberosity, anterior labial flange, tori
• Areas of poor support like mylohyoid rudge, very resorbed knife edge ridge, flabby ridges

Question 11

How to fix discomfort in those areas?

Answer 11

• Paint on PIP
• Where rubs off acrylic bur these areas