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OCCLUSAL RELATIONSHIPIN REMOVABLE PARTIAL DENTURE

OCCLUSAL RELATIONSHIPIN REMOVABLE PARTIAL DENTURE. OCCLUSION. The static relationship between the incising or masticating surfaces of the maxillary or mandibular teeth or tooth analogues. (GPT-7). CENTRIC OCCLUSION.

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OCCLUSAL RELATIONSHIPIN REMOVABLE PARTIAL DENTURE

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  1. OCCLUSAL RELATIONSHIPIN REMOVABLE PARTIAL DENTURE

  2. OCCLUSION • The static relationship between the incising or masticating surfaces of the maxillary or mandibular teeth or tooth analogues. (GPT-7)

  3. CENTRIC OCCLUSION • The occlusion of opposing teeth when the mandible is in centric relation.(GPT-7)

  4. 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)

  5. 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.

  6. 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)

  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)

  8. 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.

  9. 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.

  10. IMPRESSION PLASTER • WAXES • ZINC –OXIDE EUGENOL PASTES • SILICONE ELASTOMERS • POLYETHER ELASTOMERS • ACRYLIC RESINS • STABILIZED BITE RIMS

  11. 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.

  12. 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.

  13. 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 materials-JPD ,Feb 1984

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