| 2791 Efficacy of Implant-supported Maxillofacial Prostheses: Masticatory Performance With Conventional Prostheses | ||
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N. GARRETT1, E.D. ROUMANAS2, K.K. KAPUR1, E. FREYMILLER2, J. BEUMER2, R. MCFARLAND2, and J. DONG2, 1University of California Los Angeles, VA Greater Los Angeles Healthcare System, USA, 2University of California Los Angeles, USA Objectives: Although new surgical techniques have provided improved reconstructive results following a partial mandibulectomy or maxillectomy, chewing function may continue to be compromised. Our longitudinal clinical trial to evaluate effectiveness of conventional and implant-supported dentures permitted comparison of chewing function pre- and post-surgical interventions and after conventional prosthetic restoration in patients receiving a partial mandibulectomy or maxillectomy. Methods: Standardized masticatory performance tests on defect and non-defect sides have been given to 25 participants who received a conventional prosthesis following a partial mandibulectomy with free-flap reconstruction and 12 following a partial maxillectomy with obturation. Performance was evaluated prior to ablative surgery, after surgical recovery and after adaptation to the conventional prosthesis. Performance scores of zero were assigned for tests that could not be completed due to pain or discomfort in chewing. Results: Prior to surgery in the mandibulectomy group, the mean performance on the non-defect side of 38.9% was significantly greater (p<0.01) than the mean of 20.3% on the defect side. Post-surgically, mean performance decreased (p<0.01) on the defect side to 6.2% and on the non-defect side to 25.5%. Restoration with the conventional prosthesis significantly improved performance to 16.7% on the defect side and 32.1% on the non-defect side (p<0.01). Post-surgical performance in the maxillectomy group improved from 6.5% to 15.3% on the non-defect side and from 3.7% to 8.2% on the defect side following provision of the conventional prostheses. These changes were not statistically significant (p>0.05). Conclusions: Restoration with a conventional prosthesis significantly improved masticatory ability after partial mandibulectomy and reconstructive surgery, reaching pre-surgical levels. Slight improvement was also seen in performance with the definitive conventional prosthesis in the maxillectomy group, although their chewing function continued to be extremely impaired. Supported by NIDCR Grant R01DE11255 and VA Medical Research Service. | ||
| Seq #287 - Keynote Address and Implant Prosthodontics 12:30 PM-2:30 PM, Friday, 12 March 2004 Hawaii Convention Center 321-B | ||
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