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Effects of surgery of mandibular odontogenic keratocysts on masticatory performance

Objective:To statistically evaluate the changes of masticatory performance in 60 patients wearing removable partial dentures following surgery of odontogenic keratocysts of the mandible.Method:The number of teeth involved preoperatively with the cyst and teeth lost postoperatively were recorded by reviewing radiographs and clinical data.Masticatory performance was measured before and after wearing a post-operative removable partial denture by means of a spectrophotometer using peanuts as the test substances.The results were analyzed using student's t test.Result: The number of lost teeth after mandibulectomy was significantly more than that after enucleation or marsupialization of cysts.Masticatory performance in patients receiving mandibulectomy was significantly lower than that after enucleation or partial mandibulectormy(P0.01).Post-operative removable partial denture significantly increased masticatory performance in the patients receiving enucleation or marsupialization(P0.01).Conclusion:Masticatory performance following odontogenic keratocysts surgery is related to operative methods or the number of lost teeth,and post-operative removable partial dentures will improve chewing function when operative side arch is restored.