CO-Cr. RPD

My spesial thanks to Dr.Iyad, Dr.Amawiya, Dr.Amina & Dr.Raghid

28 years old female came to clinic with multiple e-edentulous areas on the both upper & lower arches 

-Diagnosis & Treatment Planning
- Select Abutments "Canines + 2nd Premolars "
- Direct retainers
- Major connectors "lingual bar"
- Position of rests
- bracing & retentive arms
To Do:
- Draw design on surveyed cast
- Design should be approved before any treatment started:
1) affects of direct restorations
2) can influence need for / preperations of crowns
3) insures RPD can completed successfully
4) Survay, tripod, heights of contour

Final impression for partial dentures:
1) framework impression > border molding "using thermoplastic compound", material used "polyvinyl Siloxane"
2) Altered cast impression

prior to final impression make alginate impression to check :
1) guiding planes
2) Rest seats
3) Retentive areas
4) Hights of contour

Master cast

Pour 2ndry cast "Lab will transfer design to this cast"

RPD Protocol summary: 1.Diagnosis, Treatment Plan, Hygiene2.Diagnostic Casts3.Draw Design & list abutment modifications4.Instructor Approval5.Abutment modifications6.Preliminary impression to check mod.’s7.Final Framework Impression8.Pour two casts
9.Draw design on 2nd cast10.Instructor approval/corrections11.Cast to Lab with 1st pour & prescription12.Inspect framework waxup13.Framework Adjustment14.Altered Cast impression, if needed15.Try-in with teeth in wax16.Process, deliver to patient

after selecting design .. metal try in in the cast

Metal try in in the pt. mouth

Occlusal registration using wax