Prosthodontics3rd Year

OCCLUSAL RELATIONSHIPS FOR REMOVABLE PARTIAL DENTURE

By:Ahmed Ali Abbas

theoptimalsmile.wix.com

OCCLUSION

FUNCTIONAL HARMONIOUS

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.

• 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.

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

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.

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

Contact of opposing anterior teeth in intercuspal position

and in eccentric positionsKENNEDY 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

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

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.

DIRECT APPOSITION OF CASTS

JAW RELATIONS FOR MANDIBULAR REMOVABLE PARTIAL DENTURE OPPOSING MAXILLARY COMPLETE DENTURE

OCCLUSION

FAVORABLE TOOTH-TO-RIDGE RELATIONSHIP

OPTIMUM OCCLUSAL PLANE

CUSPAL HARMONY BETWEEN ALL OCCLUDING TEETH

TRY-IN

REMOUNTED

CORRECTION OF OCCLUSAL DISCREPANCIES

CURING PROCESS