- A 47-year-old woman is undergoing planning for a full mouth rehabilitation. Before taking the interocclusal record, the clinician manipulates her into retruded contact position (RCP). Which is the single most appropriate description of this position?
A The initial tooth contact following the rotational movement of the mandible
B The initial tooth contact whilst closing around the terminal hinge axis
C The only clinically reproducible initial tooth contacts
D The position of the condyle whilst closing in the habitual position
E The position of the condyle whilst in its most relaxed functional position during closure
Answer : B
Helps record sulcus width and depth in function → border seal, ensure denture contour to movement of sulcus and frenum. *Should have minimal thickness btw denture and ST during function → ensure salivary surface tension and greater pressure gradient, improving retention.
Neutral zone recorded in try in stage with special impression technique
- A 79-year-old edentulous man has a loose upper complete denture. After the primary impressions are taken, the dentist explains that more impressions will be taken at the next appointment. The patient asks why this is necessary. What is the single main reason for the second impression?
A To accurately record soft tissue detail to improve the denture’s adaption
B To correct faults in the primary impression
C To identify the path of insertion of the dentures
D To outline to the technician the neutral zone for tooth placement
E To record and define the full functional limits of the denture-bearing area
Answer : E
Helps record sulcus width and depth in function → border seal, ensure denture contour to movement of sulcus and frenum. *Should have minimal thickness btw denture and ST during function → ensure salivary surface tension and greater pressure gradient, improving retention.
Neutral zone recorded in try in stage with special impression technique
- A 64-year-old woman is treatment-planned to have an immediate maxillary complete denture following a full clearance. Prior to the clearance, she is warned that the dentures will need remaking in 6 months to year. Which is the single most appropriate rationale for this warning?
A Bony remodelling will result in occlusal irregularities
B Bony remodelling will result in overextended dentures
C Bony remodelling will result in poor denture adaptation
D Bony remodelling will result in poor tooth positioning
E The patient might complain if they are unaware they will have to pay again
Answer :C
Resorption is greatest in first 6-12 months, after which the rate slows. Mand bone loss 4x than maxilla
- An 87-year-old edentulous woman has worn dentures and is requesting a new set. As she has no complaints with her current set and has worn them for 5 years, it is decided to provide a new set via the copy technique. Which surfaces of the dentures can be changed easily using this technique?
A Fitting and occlusal surfaces
B Fitting and polished surfaces
C Occlusal and polished surfaces
D Occlusal surfaces only
E Polished surfaces only
Answer :A
Polished surface → all of denture surface that is not the teeth or the fitting surface. Copy denture meant to copy this polished surface to aid habituation. Clinical assess and progress pg 119