A photoelastic study of stress induced by framework design in a maxillary resection.
Support of a framework and obturator in a patient with an acquired maxillary defect is diminished by the removal of a portion of the palate and alveolar bone. The intent of this study was to investigate, by three-dimensional photoelastic analysis, the stress transmission that occurs with four commonly used retentive systems. The individual designs were facial cast circumferential retention with palatal plating, swing-lock design with palatal plating, facial cast circumferential retention and palatal cast circumferential clasp reciprocation, and facial cast circumferential reciprocation with palatal I-bar retention. Stresses were observed and compared on the palate and around the teeth of the four models.
Myers
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RE
Naval Dental School, Naval Dental Clinic, Naval Medical Command National Capital Region, Bethesda, Md.
Mitchell
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DL
D002858:Chromium Alloys; D003799:Dental Stress Analysis; D003779:Denture Design; D003781:Denture Retention; D003832:Denture, Partial, Removable; D006801:Humans; D008437:Maxilla / Q000502:physiology* / Q000601:surgery; D008954:Models, Biological; D010158:Palatal Obturators; D011474:Prosthesis Design; D013314:Stress, Mechanical
D002858:Chromium Alloys