Objective: The purpose of the study was to compare the resistance to displacement of low-profile and standard titanium bone plate with an experimental mandibular angle fracture model.
Study Design: A jig was used to produce standard horizontally and vertically unfavorable mandibular angle fractures in 24 healthy baboon hemimandibles. Each hemimandible was immobilized with either a standard or a low-profile titanium bone plate with a Champy unicortical technique. The resistance to displacement was measured in a tensile-testing machine, and results were analyzed with a three-way analysis of variance.
Results: Mean (SD) forces required to displace the fractures were standard plate 68.7 (22.8) kg and low-profile plate 46.5 (24.6) kg.
Conclusions: The standard plates provided significantly more resistance to displacement, and 75% of the low-profile plates fractured through a screwhole.
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