Monolateral temporomandibular joint ankylosis treated with piezoelectric surgery employing 3D printed pre-operative surgical planning model in cat.

The aim of this study was to describe and share employment of piezoelectic surgery and 3D printed pre-operative surgical planning model in cat affected by temporomandibular joint ankylosis (TMJa). A 3-year-old neutered male domestic shorthair cat presented feeding problem was submitted for a CT scan of the head in order to investigate clinical TMJa. A 16-slice multidetector CT scanner was used. CT scan revealed a misshapen, rounded right condylar process, with irregular and reduced TMJ space. A right condylectomy through piezoelectric surgery was performed. In order to plan the best surgical approach, a 3D printed model was used prior the surgery to easy identify the ideal angulation for condylectomy and during the surgery to verify the proper extent of the osteotomy. At 6-month follow-up the range of mouth opening is close to normal.