›› 2012, Vol. 32 ›› Issue (1): 73-.doi: 10.3969/j.issn.1674-8115.2012.01.014

• Original article (Clinical research) • Previous Articles     Next Articles

Photoelastic analysis of stress distribution of complete dentures with lingualized occlusion (routine complete denture load)

JIN Wen-zhong, JIAO Ting, PENG Yan, XIA Yin-pei, ZHUANG Hong   

  1. Department of Prosthodontics, the Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, China
  • Online:2012-01-28 Published:2012-01-29
  • Supported by:

    Shanghai Science and Technology Committee Foundation, 08DZ2271100

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Abstract:

Objective To investigate the stress distribution of supporting tissues in complete dentures with lingualized occlusion and anatomic occlusion under centric and lateral stress load. Methods Three-dimensional photoelastic experiment mothod was adopted, and photoelastic models of epoxy were fabricated according to the Cawood V edentulous model. Complete dentures with lingualized occlusion and anatomic occlusion were prepared respectively. After frozen under centric and lateral stress load, the stress distribution of supporting tissues was analysed and compared. Results Under centric and lateral stress load, lingualized occlusion conveyed more stress to lingual side than anatomic occlusion in routine complete dentures, and the occlusion stress in lingualized occlusion was better distributed. Conclusion For patients with severe absorbed alveolar ridge undergoing complete denture restoration, lingualized occlusion should be considered in first place to increase the stability of dentures.

Key words: lingualized occlusion, balanced occlusion, complete denture, photoelastic experiment