In vitro evaluation of conventional and locking miniplate/screw systems for the treatment of mandibular angle fractures

Hemimandibles representing the experimental groups prior to compressive strength test.

Polyurethane mandible model fixed to the supporting base for the three-point biomechanical test. Point A, resistance produced by the mandibular condyle; point B, resistance produced by the food bolus; point C, resultant of the mastication forces. *Notches made on the base of the bone segments and surgical compass used to measure the vertical and horizontal displacement before the test.

Measuring the distance between the bone segments at the end of the test after a 4mm vertical and horizontal displacement.