Gravity-induced stresses by an obturator prosthesis
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B Schwartzman1, A A Caputo, J Beumer
1Biomaterials Science Section, University of California, School of Dentistry, Los Angeles.
The Journal of Prosthetic Dentistry
|October 1, 1990
Abstract:
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.