The effect of occlusal contact localization on the stress distribution in complete maxillary denture

M. Ateş, A. Çilingir*, T. Sülün, E. Sünbüloǧlu, E. Bozdaǧ

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

The fracture of acrylic resin dentures is an unresolved problem in removable prosthodontics despite many efforts to determine its cause. Unfavourable occlusion could be playing an important role in the fracture of the denture. The aim of this study was to investigate the effect of occlusal contact localization on the stress distribution in complete maxillary denture bases utilizing two-dimensional finite element analysis. The results of this study have shown that maximum compressive stresses in a complete maxillary denture under functional masticatory forces concentrates always on the artificial tooth/denture base junction irrespective to the occlusal contact localization. Tensile stresses were observed in areas toward the midline, although the midline itself usually had lower stresses. Shifting the occlusal contacts to a more buccal localization resulted in an increase of the calculated stresses. As a conclusion, it can be speculated that the buccal placement of the occlusal contacts may play a role in the fatigue fracture of the complete maxillary denture.

Original languageEnglish
Pages (from-to)509-513
Number of pages5
JournalJournal of Oral Rehabilitation
Volume33
Issue number7
DOIs
Publication statusPublished - Jul 2006

Keywords

  • Artificial teeth
  • Complete maxillary denture
  • Finite element analysis
  • Fracture
  • Occlusal contacts

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