• Kássia De Carvalho Dias, Adriana Da Fonte Porto Carreiro, Camila Maria Bastos Machado Resende, Soares Paiva Tôrres Ana Clara AC Center of Health Science, Federal University of Rio Grande do Norte, Avenida Senador Salgado Filho, 1787, Lagoa Nova, 59056-000, Natal, R, and Wilson Mestriner Júnior.
• Department of Dental Materials and Prosthodontics, Oral Rehabilitation Program-Araraquara School of Dentistry UNESP-Univ. Estadual Paulista, Centro, 14801903, Araraquara, SP, Brazil. kassiaodonto@hotmail.com.
• Clin Oral Investig. 2016 Jun 1; 20 (5): 951-7.

ObjectivesTo evaluate the change in masticatory efficiency and quality of life of patients treated with mandibular Kennedy class I removable partial dentures (RPDs) and maxillary complete dentures at the Department of Dentistry of the Federal University of Rio Grande do Norte.Materials And MethodsA total of 33 Kennedy class I patients were rehabilitated with maxillary complete dentures, and mandibular RPDs were selected for this non-randomized prospective intervention study. The patients had a mean age of 59.1 years. Masticatory efficiency was evaluated by colorimetric assay using fuchsin capsules. The measurements were conducted at baseline and 2 and 6 months after prosthesis insertion. Quality of life was evaluated using the Oral Health Impact Profile (OHIP-14) at baseline and 6 months after denture insertion. The Kolmogorov-Smirnov normality test was applied. Masticatory efficiency was evaluated by repeated measures ANOVA. Oral health-related quality of life was compared using the paired t test.ResultsThere was no statistically significant difference in masticatory efficiency after denture insertion (p = 0.101). Significant differences were found (p = 0.010) for oral health-related quality of life. A significant improvement in psychological discomfort (p < 0.01) and psychological disability (p < 0.01) was observed. Mean difference value (95 % confidence interval) was 6.8 (3.8 to 9.7) points, reflecting a low impact of oral health on quality of life, considering the 0-56 range of variation of the OHIP-14 and a Cohen's d of 1.13.ConclusionAccording to the results of the present study, rehabilitation with Kennedy class I RPDs and complete dentures did not influence masticatory efficiency but improved oral health-related quality of life.Clinical RelevanceThe association between the patient's quality of life and the masticatory efficiency is important for treatment predictability.

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