口腔固定修复总论英语课件.pptx

1、Removeable partial dentureSummary01 is a dental prosthesis that replaces the lost natural dentition and associated structures of maxilla or mandible;it can be removed conveniently from the mouth by the patient.Indication02A variety of dentition defects, especially those with free end teeth.01Teeth m

2、issing with alveolar bone, jaw or soft tissue defect.02The need for transitional denture in the process of tooth extraction healing.03Periodontal disease needs active splint fixation for loosening teeth.04Vertical occlusal distance is too low due to severe wear and tear on the occlusal surface or lo

3、ss of many teeth.05After extraction , make an immediate denture or other special needs 06formation03RestAny unit of a partial denture that rests on a tooth surface to provide vertical support is called a rest.01Maintains established occlusal relationships by preventing settling of the denture.02Prev

4、ention of food impaction and sometimes ,it can be used as restoration of occlusion03Maintains components in their planned positions.Its width and thickness should meet the requirements of materials.The width is 1/3 of molars dental diameters or 1/2 of premolars.The length is usually 1/4 of the molar

5、mesiodistal or 1/3 of the premolar.The thickness is about 11.5mm.Retainer is the part of removable partial denture to resist dislocation and obtain retention, support and stabilityDirect retainersAuxiliary direct retainer，mainly enhances the stability of denture and prevents the denture from warping

6、, swinging, rotating and sinking.Indirect retainersThe direct retainer resists the displacement of the denture away from the base and plays a major role in retentioncontinuous claspring clasphalf and half clasplong arm claspcombind claspmesio-restbuccal I rod claspdistal middle panelconnectorMajor c

7、onnectorsconnects the components on the denture, such as clasps and brackets, with the major connectors and base.Minor connectorsA major connector is the unit of partial denture that connect the parts of the prosthesis located on one side of the arch with those on the opposite side.Palatal plateling

8、ual plateMajor connectorsbase plateThe denture base supports artificial teeth and effects the transfer of occlusal forces to supporting oral structures.l Connection：Arrange artificial teeth ,connect denture parts into a whole.l Repair deficiency：Repair of alveolar bone, jaw and soft tissue defectsl

9、Transfer occlusal force：Bear, transfer and dispersion of artificial teeth occlusal forcel Retention and stabilization：Prevent rotation and warping of dentureRepair of maxillary sinus fistula with denture baseArtifical toothReplace missing natural teeth with artificial teeth to restore crown shape an

10、d masticatory functionl Replacement of missing natural teeth to restore arch integrityl Establish normal occlusion, alignment and adjacency to restore masticatory function.l Auxiliary pronunciationl Restoration of dentition shape and facial shapel To prevent the remaining teeth elongation, tilt, shi

11、ft and relationship disorderconclusion04 Kennedyrestclaspconnctorartifical toothcaseRPD Use natural teeth, base mucosa and bone tissue as ；Relied on retainer and base to ； of the shape and function of missing teeth with artificial teeth； of alveolar ridge, jaw and surrounding soft tissue with denture base material.Thank you!