This document discusses occlusal relationships for removable partial dentures. It notes that causes of failure include lack of denture base support, establishing occlusion from a single static jaw relation, and unacceptable occlusal planes. Satisfactory occlusion requires analysis of occlusion, recording centric relation and eccentric jaw relations, and correcting occlusal disharmonies. Desirable occlusal contact relationships depend on factors like whether the denture is tooth-supported or opposes a complete denture. Records of occlusal relationships can be made through direct apposition of casts, interocclusal records, or using occlusion rims.

1. Prosthodontics
3rd Year
OCCLUSAL RELATIONSHIPS FOR
REMOVABLE PARTIAL DENTURE
By:Ahmed Ali Abbas
theoptimalsmile.wix.com

2. OCCLUSION
FUNCTIONAL HARMONIOUS

3. CAUSES OF FAILURE TO PROVIDE AND
MAINTAIN ADEQUATE OCCLUSION ON
THE REMOVABLE PARTIAL DENTURE
1. Lack of support for the denture
base.
2. Establishing occlusion in a single
static jaw relation record.
3. Unacceptable occlusal plane.

4. • The influence of the remaining
natural teeth is usually such that the
occlusal forms of the artificial teeth
must be made to conform to an
already established occlusal pattern.

5. SATISFACTORY OCCLUSION
ANALYSIS OF THE
OCCLUSION
CORRECTION OF
OCCLUSAL DISHARMONY
RECORDING OF
CENTRIC RELATION
OR OCCLUSION
RECORDING OF
ECCENTRIC JAW
RELATIONS
CORRECTION OF OCCLUSAL
DISCREPANCIES

6. DESIRABLE OCCLUSAL CONTACT RELATIONSHIPS
FOR REMOVABLE PARTIAL DENTURES
Simultaneous bilateral contacts
of opposing posterior teeth
CENTRIC OCCLUSION
Tooth-supported removable
partial dentures
OCCLUSION IN
HARMONIOUS NATURAL
DENTITION.
Bilateral balanced occlusion in
eccentric positions
MAXILLARY COMPLETE
DENTURE OPPOSES THE
REMOVABLE PARTIAL
DENTURE.

7. MAXILLARY BILATERAL
DISTAL EXTENSION
REMOVABLE PARTIAL
DENTURE
Working side contacts MANDIBULAR DISTAL
EXTENSION DENTURE.
Simultaneous working
and balancing contacts
Only working
contacts
UNILATERAL DISTAL
EXTENSION
REMOVABLE
PARTIAL DENTURE

8. Contact of opposing anterior
teeth in intercuspal position
and in eccentric positions
KENNEDY CLASS IV
Balanced contact of opposing
posterior teeth in protrusive
relationship and functional
excursive positions
OPPOSING COMPLETE
DENTURE OR
BILATERAL DISTAL
EXTENSION MAXILLARY
REMOVABLE PARTIAL
DENTURE

9. NOT ARRANGED DISTALLY
OF THE BEGINNING OF A
SHARP UPWARD INCLINE
OF THE MANDIBULAR
RESIDUAL RIDGE OR OVER
THE RETROMOLAR PAD.
Artificial
posterior teeth
Artificial teeth RESIDUAL RIDGES

10. RECORDS OF OCCLUSAL RELATIONSHIPS FOR
PARTIALLY EDENTULOUS PATIENTS
• Direct apposition of casts.
• Interocclusal records with posterior teeth
remaining.
• Occlusal relations using occlusion rims on
record bases.
• Jaw relation records made entirely on
occlusion rims.

11. DIRECT APPOSITION OF CASTS

12. JAW RELATIONS FOR MANDIBULAR REMOVABLE PARTIAL
DENTURE OPPOSING MAXILLARY COMPLETE DENTURE

13. OCCLUSION
FAVORABLE TOOTH-TO-
RIDGE RELATIONSHIP
OPTIMUM
OCCLUSAL PLANE
CUSPAL HARMONY BETWEEN
ALL OCCLUDING TEETH

14. TRY-IN
REMOUNTED
CORRECTION OF OCCLUSAL DISCREPANCIES
CURING PROCESS