In order to evaluate the efficacy of polymethylmethacrylate with or without a mucoperiosteal single flap in the treatment of experimental oronasal fistula of canine teeth, in 12 dogs, an experimental model is presented. The dogs were observed for a 60-day period, with clinical, histhological and radiological evaluation. The main complication was recurrence due to acrylic migration and partial or total suture failure. The histhopathologic analysis showed evidence of chronic inflammatory reaction. In the radiographic evaluation fracture consolidation adjacent to the acrylic was observed. The experimental model is appropriate to study the repair of oronasal fistula in dogs. The polymethylmethacrylate is efficient for the repair of experimental oronasal fistula, without evidence of rejection, and it can be utilized associated or not to a mucoperiosteal single flap.
dog; teeth; polymethylmethacrylate; oronasal comunication; surgery
