›› 2009, Vol. 29 ›› Issue (11): 1288-.

• Monographic report (Prosthodontics) • Previous Articles     Next Articles

Comparison of stress distribution on telescopic denture and clasp-retention denture for the bilateral free-ended case

WEI Bin, CHEN Jie, HUANG Qing-feng, JIN Wen-zhong, ZHANG Fu-qiang   

  1. Department of Prosthodontics, Shanghai Key Laboratory of Stomatology, College of Stomatology, The Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200011, China
  • Online:2009-11-25 Published:2009-11-24
  • Supported by:

    The Eleventh Five Year Plan National Key Science and Technology Project, 2007BAI18B05; Shanghai Science and Technology Committee Foundation, 08DZ2271100; Shanghai Leading Academic Discipline Fund, S30206; Shanghai Leading Academic Discipline Fund, T0202

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Abstract:

Objective To establish three dimensional finite element model libraries of telescopic dentures and removable partial dentures by means of model libraries, and compare the characteristics of stress distribution among three prostheses. Methods Normal model libraries were imported and edited, and models of bilateral free-ended cases were established. Based on the model libraries of fixed partial dentures and removable partial dentures, the finite element models of telescopic dentures and removable partial dentures with medial or distal occlusal rest were established using softwares such as DELL Precision Graphics Workstation, UG 5.0, HyperMesh 7.0 and Abaqus 6.5, then finite element stress analysis was performed. Results The stress distribution on abutment root, parodontium, alveolar mucosa and alveolar bone was uniform. The maximum value of stress on the abutment root (6.205 MPa) was much less than those of two removable partial dentures (18.41 MPa and 34.49 MPa). Conclusion For bilateral free-ended cases, the telescopic denture design is uniform in stress distribution with less stress on abutment root, which is healthy to the abutment root and surrounding tissues.

Key words: finite element analysis, telescopic denture, removable partial denture