Portal de Periódicos da CAPES

Gravity-induced stresses by an obturator prosthesis

1990; Elsevier BV; Volume: 64; Issue: 4 Linguagem: Inglês

10.1016/0022-3913(90)90045-e

1097-6841

Boris Schwartzman, Angelo A. Caputo, John Beumer,

Bone Tumor Diagnosis and Treatments

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 kind to remaining structures. These same designs with lingual retention were most severe, while the swinglock and light wire retainers were intermediate in generated stress.