All on Four (R) Fixed Implant Support Rehabilitation: A Masticatory Function Study

Autor(es)

De Rossi, Moara ^[1] ; Santos, Carla Moreto ^[1] ; Miglioranca, Reginaldo ^[2] ; Hallak Regalo, Simone Cecilio ^[3]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sch Dent, Sao Paulo - Brazil

^[2] Odontol RM Clin, Sao Paulo - Brazil

^[3] Univ Sao Paulo, Sch Dent, Dept Morphol Stomatol & Physiol, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH; v. 16, n. 4, p. 594-600, AUG 2014.
• Citações Web of Science: 9

Resumo

Background: Fixed implant-supported prostheses according to All-on-Four (R) (Nobel Biocare, Goteborg, Sweden) principles have become an accepted treatment modality in totally edentulous patients, whereas the functional effect of this therapy is limited. Purpose: The purpose of this study was to evaluate the muscular function of patients totally rehabilitated with All-on-Four. Materials and Methods: This study evaluated 63 patients. Twenty-one patients were successfully rehabilitated with maxillary and mandibular All-on-Four (no dropout implants, satisfactory aesthetic and function demands prosthesis), 21 patients were dentate, and 21 were rehabilitated with double complete dentures. Electromyography was carried out during clenching, nonhabitual and habitual chewing, and rest. All values were standardized as percentage of a maximum voluntary contraction. Data were analyzed by ANOVA to compare groups and paired t-test was used for comparison between sides within each group. Results: All groups presented symmetric muscular activity. The All-on-Four and dentate groups had a similar muscles surface electromyography (sEMG) contraction pattern, that is, a highers EMG activity of masseter than temporalis muscles, differing (p <= .05) from those of denture group. Not one statistical difference was found between All-on-Four and dentate groups. Conclusion: The muscular function similarity of All-on-Four and dentate patients shows that this treatment concept may be considered as a good option for oral rehabilitation in edentulous patients. (AU)

• Processo FAPESP: 10/10289-0 - Efeito funcional das reabilitações orais fixas sobre implantes do tipo all-on-4 e zigomático- avaliação eletromiográfica, força de mordida e eficiência mastigatória
• Beneficiário: Moara de Rossi
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado