Gravity-induced stresses by an obturator prosthesis.
Recontruction after surgical resection of tumors of the maxillae and paranasal sinuses is difficult. In addition to the intermittent forces encountered during function, the prosthesis is subjected to the constant force of gravity. This investigation photoelastically studies the gravity-induced stresses transmitted to the remaining oral structures by various obturator prosthesis framework designs. Frameworks which used I-bar and circumferential retainers with buccal retention were most severe, while the swinglock and light wire retainers were intermediate in generated stress.
Schwartzman
B
B
Biomaterials Science Section, University of California, School of Dentistry, Los Angeles.
Caputo
A A
AA
Beumer
J
J
D001732:Bite Force; D000044:Dental Abutments; D003799:Dental Stress Analysis; D003779:Denture Design; D003781:Denture Retention; D003832:Denture, Partial, Removable; D006112:Gravitation; D006801:Humans; D008437:Maxilla; D008954:Models, Biological; D010158:Palatal Obturators; D011474:Prosthesis Design; D013314:Stress, Mechanical; D014070:Tooth / Q000502:physiology