Three-dimensional finite element stress analysis of a cantilever fixed partial denture.
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.
Awadalla
H A
HA
Department of Prosthodontics, University of Pittsburgh, School of Dental Medicine, Pa.
Azarbal
M
M
Ismail
Y H
YH
el-Ibiari
W
W
D000539:Alveolar Process / Q000502:physiology*; D001641:Bicuspid / Q000502:physiology; D003442:Crowns; D003481:Cuspid / Q000502:physiology; D000044:Dental Abutments; D003799:Dental Stress Analysis; D003779:Denture Design; D003830:Denture, Partial, Fixed; D004548:Elasticity; D006047:Gold Alloys / Q000737:chemistry; D006801:Humans; D007575:Jaw, Edentulous / Q000503:physiopathology; D008334:Mandible / Q000502:physiology*; D008954:Models, Biological; D010513:Periodontal Ligament / Q000502:physiology; D013314:Stress, Mechanical; D013718:Tensile Strength; D014092:Tooth Root / Q000502:physiology
D006047:Gold Alloys