OCCLUSAL
RELATIONSHIPIN
REMOVABLE
DENTURE
PARTIAL
1st Phase
•Education of the
patient.
2nd Phase
•Diagnosis,
treatment
planning, Design,
treatment
sequence, and
mouth
preparation.
3rd Phase
•Support for Distal
extension denture
Bases.
4th Phase
•Establishment
and verification of
occlusal relations
and tooth
arrangement.
5th Phase
•Initial Placement
Procedures
6th Phase
•Follow
up/Periodic Recall
OCCLUSION
The static relationship between the incising or masticating
surfaces of the maxillary or mandibular teeth or tooth
analogues. (GPT-7)
CENTRIC OCCLUSION
The occlusion of opposing teeth when the mandible is in
centric relation.(GPT-7)
MAXIMAL INTERCUSPAL
POSITION
The complete intercuspation of the opposing teeth
independent of condylar position, sometimes referred to as
the best fit of the teeth regardless of the condylar
position.(GPT-7)
VERTICAL DIMENSION
The distance between two selected points, one on a fixed
and one on a movable member.
OCCLUSAL VERTICAL DIMENSION : the distance between
two points when the occluding members are in contact.
PHYSILOGICAL REST POSITION
The mandibular position assumed when the head is in an
upright position and the involved muscles, particularly the
elevators and depressor groups, are in equilibrium and tonic
contraction, the condyles are in a neutral, unstrained
position.(Gpt-7)
OCCLUSAL REGISTRATION
A registration of the positional relationship of opposing
teeth or arches; a record of the positional relationship of
the teeth or jaws to each other.(GPT-7)
OBJECTIVES:
To establish & maintain a harmonious relationship with all
oral structures & to provide a masticatory apparatus which
is efficient, comfortable & esthetically pleasing.
Necessary for distribution of functional forces evenly as
possible to all supporting structures within their capability
of withstanding the stress.
IDEAL REQUIREMENTS OF BITE
REGISTRATION MATERIAL
Limited resistance before setting to avoid displacing the
teeth or mandible during closure.
Rigid or resilient after setting.
Minimal dimensional change after setting.
Ideal recording of occlusal & incisal surface of the teeth.
Easy to manipulate.
No adverse effects on the tissues involved in recording
procedures.
Interocclusal record should be verifiable.
IMPRESSION PLASTER
WAXES
ZINC –OXIDE EUGENOL PASTES
SILICONE ELASTOMERS
POLYETHER ELASTOMERS
ACRYLIC RESINS
STABILIZED BITE RIMS
RECORDING
OF OCCLUSAL RELATIONSHIP
IT MAY VARY FROM SIMPLE APPOSITION OF THE
OPPOSING CASTS BY OCCLUDING SUFFICIENT
REMAINING NATURAL TEETH TO RECORDING OF
JAW RELATIONSHIP IN THE SAME MANNER AS FOR
A COMPLETELY EDENTULOUS PATIENT.
METHODS OF RECORDING
OCCLUSION
Direct apposition of casts.
Interocclusal records with posterior teeth remaining.
Occlusal relation using occlusal rims on record bases.
Jaw relation made entirely on occlusion rims.
Establishing occlusion by recording of occlusal pathways.
REFERENCES
Removable partial denture-McCracken’s.
Clinical removable partial prosthodontics-Stewart
Partial dentures –Osborne
Removable partial prosthodontics-Grosso & Miller.
Partial dentures -Swenson
Occlusion in removable partial denture-JPD, Jan-2004
Accurate occlusal relationship in partial denture construction-JPD,Nov
1953.
Clinical evaluation of the accuracy of interocclusal recording materialsJPD ,Feb 1984