Background:-Gap arthroplasty is a one of the techniques used torelease TMJ bony ankylosis with reported many advantages anddisadvantages. The aim of this study was to present and evaluatenew semi-sagittal split osteotomy of ankylosing bony mass to releasetemporomandibular joint bony ankylosis. It was intended to minimizethe disadvantage of gap arthroplasty. Patient and methods:-Twelve patients suffering from TMJ bonyankylosis were included in the present study. New semi-sagittal splitosteotomy of ankylosing bony mass was implemented. This cut wasextended from the most superior point of ankylosing bone masslaterally and directed downward and medially towards the most inferiorpoint of the most constricted part just above the mandibularforamen. Pterygomasseteric sling release was performed. Sixquantitative and qualitative calipers were used to assess the technique. Results:-Postoperative interincisal opening was increased significantlyand the lower jaw displaced downward without shortening of themandibular ramus. Only one case out of twelve (8.3%) representedpostoperative anterior open bite. Conclusion:-Semi-sagittal split osteotomy of ankylosing bony masswas recommended to preserve the major vital structures at the base ofthe skull in long standing and recurrent temporomandibular joint bonyankylosis especially with bulbous bony mass.
Dental Hygiene & Oral Health
Orthodontics & Dentofacial Orthopedics
Paediatric Dentistry
Periodontology
Oral & Maxillofacial Surgery
Oral Cancer and Dentures
Geriatric & Nano Dentistry
Digital Dentistry and 3D Imaging (CAD/CAM)
Dental Laboratory Materials and Processes
Advanced Tools and Treatment Techniques in Dentistry
