[Electronic speckle pattern interferometric analysis on force distribution of different mandibular unilateral free-end dentures].
OBJECTIVE
To study the force distribution of three kinds of mandibular unilateral free-end partial denture under vertical loading on the artificial tooth.


METHODS
A fresh mandible with right 2nd and 3rd molars missing was restored with cantilever fixed partial denture (CFD), casting three arm clasp removable partial denture (CCD) and RPI removable partial denture (RPID) respectively. The force distribution on the surface of supporting bone was studied by using electronic speckle pattern interferometry (ESPI). The ESIP was displayed real-time and recorded. The fringes determining was prossed by microcomputer image processing. The corresponding out of plane displacement of the supporting bone was measured and analyzed.


RESULTS
Showed all of the three kinds of dentures contribute to transmit stress to supporting bone. The corresponding out of plane displacement of supporting bone decreased, the degree of decrease was CFD < CCD < RPID in order.


CONCLUSIONS
This finding provides a useful reference for design of denture construction.
Li
Y
Y
Stomatological Hospital of China Medical University, Shenyang 110002.
Deng
Y
Y
Dong
B
B
D000328:Adult; D003830:Denture, Partial, Fixed; D003832:Denture, Partial, Removable; D004583:Electrons; D006801:Humans; D013718:Tensile Strength