Removable Exam 1 Review (718 ) | updated 2024
1. What are the primary indications for a survey crown?: - when correction of unacceptable tooth
contours can't be achieved through enamel modification alone (ex. not enough undercut with
enameloplasty)
- to restore a tooth with large caries/restoration
- to re-establish a proper occlusal plane (Ex. reduction crown for supra erupted tooth)
2. What must be included on the lab prescription for a survey crown?: - location and amount of
undercut (in what material/shade)
- rest and guide planes in metal
- desired occlusion
--> if GP and rests for other abutments already prepped before crown impression, tripod cast
and ask lab to follow existing GPs
3. How are survey crowns assessed before seating?: FIRST
- assess interproximal contacts, closed margin, and occlusion (all intraorally) and make
necessary adjustments
THEN
- assess crown contours and undercut on the surveyor and adjust
4. What types of intra-oral modifications can be made for the RPD?: - Guide planes
- Preps (occlusal / incisal / cingulum / embrasure)
- Enameloplasty (adjusting height of contour for clasps)
- Survey crowns
5. Crowns should be cemented at least prior to the final impression for the
RPD framework.: 24 hours
6. What types of restorations are indicated for rest preps?: - class I alloys
- class II alloys (not on box but on occlusal)
- gold inlays/onlays (treat as Class I alloy)
- Class V (depending on need/location of undercut)
7. What factors should you consider before prepping into an existing restora- tion?: - quality of
restoration
- integrity of cavosurface margin
- tooth fracture / craze lines
- potential recurrent decay
- pulpal pathology
- periodontal issues
For help with assignments, discussions, research papers, Ms. excel and ppt tasks
contact
1/
, Removable Exam 1 Review (718 ) | updated 2024
2/
1. What are the primary indications for a survey crown?: - when correction of unacceptable tooth
contours can't be achieved through enamel modification alone (ex. not enough undercut with
enameloplasty)
- to restore a tooth with large caries/restoration
- to re-establish a proper occlusal plane (Ex. reduction crown for supra erupted tooth)
2. What must be included on the lab prescription for a survey crown?: - location and amount of
undercut (in what material/shade)
- rest and guide planes in metal
- desired occlusion
--> if GP and rests for other abutments already prepped before crown impression, tripod cast
and ask lab to follow existing GPs
3. How are survey crowns assessed before seating?: FIRST
- assess interproximal contacts, closed margin, and occlusion (all intraorally) and make
necessary adjustments
THEN
- assess crown contours and undercut on the surveyor and adjust
4. What types of intra-oral modifications can be made for the RPD?: - Guide planes
- Preps (occlusal / incisal / cingulum / embrasure)
- Enameloplasty (adjusting height of contour for clasps)
- Survey crowns
5. Crowns should be cemented at least prior to the final impression for the
RPD framework.: 24 hours
6. What types of restorations are indicated for rest preps?: - class I alloys
- class II alloys (not on box but on occlusal)
- gold inlays/onlays (treat as Class I alloy)
- Class V (depending on need/location of undercut)
7. What factors should you consider before prepping into an existing restora- tion?: - quality of
restoration
- integrity of cavosurface margin
- tooth fracture / craze lines
- potential recurrent decay
- pulpal pathology
- periodontal issues
For help with assignments, discussions, research papers, Ms. excel and ppt tasks
contact
1/
, Removable Exam 1 Review (718 ) | updated 2024
2/
