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KMID : 0903220110120010012
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Journal of the Korean Cleft Palate-Craniofacial Association
2011 Volume.12 No. 1 p.12 ~ p.16
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Study of the Plating Methods in the Experimental Model of Mandibular Subcondyle Fracture
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Lee Won
Kang Dong-Hee
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Abstract
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Purpose: This study examined the biomechanical stability of four different plating techniques in the experimental model of mandibular subcondyle fracture.
Methods: Twenty standardized bovine tibia bone samples(7×1.5×1.0cm) were used for this study. Each of the four sets of tibia bone was cut to mimic a perpendicular subcondyle fracture in the center area. The osteotomized tibia bone was fixed using one of four different fixation groups(A,B,C,D). The fixation systems included single 2.0mm 4 hole mini adaption plate(A), single 2.0mm 4 hole dynamic compression miniplate(B), double fixation with 2.0mm 4 hole mini adaption plate(C), double fixation with a 2.0mm 4 hole mini adaption plate and 2.0mm 4 hole dynamic compression miniplate(D). A bending force was applied to the experimental model using a pressure machine(858 table top system, MTS?) until failure occurred. The load for permanent deformation, maximum load of failure were measured in the load displacement curve with the chart recorder.
Results: Double fixation with a 2.0mm 4hole mini adaption plate and a 2.0mm 4 hole dynamic compression miniplate(D) applied to the anterior and posterior regions of the subcondyle experimental model showed the highest load to failure.
Conclusion: From this study, double fixation with an adaption plate and dynamic compression miniplate fixation technique produced the greatest biomechanical stability. This technique may be considered a useful means of fixation to reduce the postoperative internal maxillary fixation period and achieve early mobility of the jaw.
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KEYWORD
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Subcondyle fracture, Plate fixation
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