Three-dimensional finite element stress analysis of a cantilever fixed partial denture. |
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Authors: | H A Awadalla M Azarbal Y H Ismail W el-Ibiari |
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Institution: | Department of Prosthodontics, University of Pittsburgh, School of Dental Medicine, Pa. |
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Abstract: | A three-dimensional mathematical model was generated, representing a three-unit cantilever fixed partial denture and its supporting mandibular structures. First and second premolars were used as abutments with one posterior cantilever pontic. A 5 lb vertical load was applied to the pontic. Vertical and horizontal stresses were analyzed by means of a three-dimensional finite element stress analysis technique. The results showed that a cantilever pontic creates considerable compressive stress on the abutment nearest to the pontic and produces tensile stress on the abutment farthest from the pontic. |
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