Abstract
Present short communication demonstrates innovative approach for surgical and positioning splint modification, which could improve accuracy of orthognathic surgery during facial asymmetry treatment. Usage of traditionally designed splint leads to the orientation of the midline based just on visual control, which inevitably associated with some level of maxilla deviation. It was proposed to design splint with mutually perpendicular planes in its’ frontal part at the specialized software. Such approach helps to align vertical plane of the splint with the midline vertical facial plane, while horizontal component could be aligned with the horizontal one accordingly. Proposed approach was approbated in five different clinical cases of facial asymmetry treated by orthognathic surgery. In all analyzed cases dental midline aligned perfectly with the planned one, in two cases the midline sagittal plane deviations (from ANS to PNS) resulted to be less than 2°. The horizontal occlusal plane deviations were considered clinically non-significant. Modification of the surgical splint for jaws positioning in orthognathic surgery treatment enables possibilities to check and control position of maxilla regarding reference facial planes intraoperatively, which in turn increases the accuracy of bone fragments placement and assure high precision of orthognathic surgery for asymmetric cases.
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