The objective of this research was to evaluate the influence of gender and bruxism on the maximum bite force. The concordance for the physical examination of bruxism between examiners was also evaluated. One hundred and eighteen individuals, from both genders, bruxists and non-bruxists, with an average age of 24 years, were selected for this purpose. For group establishment, every individual was submitted to a specific physical examination for bruxism (performed by three different examiners). Subjects were then divided into four groups according to gender and the presence of bruxism. The maximum bite force was measured using a gnathodynamometer at the first molar area, three times on each side, performed twice. The two measurements were made with a 10-day interval. The highest value was recorded. The mean maximum bite force was statistically higher for males (587.2 N) when compared to females (424.9 N) (p0.05). The concordance between examiners for physical examination of bruxism was considered optimal.

Background:Because peri‐implant mucositis may progress to peri‐implantitis, effective treatment resulting in resolution of inflammation could prevent peri‐implantitis. Current treatment protocols for this condition are still unpredictable. The purpose of this study is to analyze efficacy of non‐surgical treatment for patients with peri‐implant mucositis during a 6‐month follow‐up period.Methods:This controlled, randomized, double‐masked clinical trial included 37 patients diagnosed with peri‐implant mucositis, randomly assigned into test group (basic periodontal therapy + 0.12% chlorhexidine) with 61 implants; and control group (basic periodontal therapy + placebo) with 58 implants. Therapy consisted of adaptation of the full‐mouth scaling and root planing protocol. Clinical parameters of visible plaque index (VPI), gingival bleeding index (GBI), probing depth (PD), and bleeding on probing (BOP) were measured in implants and were evaluated at baseline and at 1, 3, and 6 months post‐therapy. Data were analyzed using the split‐plot analysis of variance and χ²tests with a significance level of 5%.Results:Intragroup analysis showed that VPI, GBI, PD, and BOP presented statistically significant improvements compared with baseline. No statistically significant differences were found between the test and control groups at any time.Conclusions:Both isolated mechanical therapy and its association with 0.12% chlorhexidine mouthwash reduced peri‐implant mucositis. Therefore, 0.12% of chlorhexidine was not more effective than placebo.

The aim of this non-randomized controlled clinical trial was to evaluate the oral health-related quality of life and masticatory efficiency of patients rehabilitated with mandibular two-implant overdentures with immediate loading or conventional dentures. Fifty completely edentulous patients wearing bimaxillary conventional dentures, for at least one year, were recruited. The patients were then assigned to either two treatment groups: mandibular overdentures supported by two implants with bar-clip system and a maxillary conventional denture (n = 25), and new maxillary and mandibular conventional complete dentures (n = 25). Masticatory efficiency and oral health-related quality of life were assessed before and 3 months after denture insertion. The Brazilian version of OHIP-Edent questionnaire was used to assess the oral health-related quality of life. Masticatory efficiency was evaluated with chewing capsules through a colorimetric method. The results revealed fewer oral health–related quality of life problems in patients wearing mandibular two-implant overdentures compared to the conventional dentures group. In addition, the implant overdenture group presented statistically significant improvement in masticatory efficiency (p = 0.001). There was no correlation between masticatory efficiency and OHIP in the implant group (p > 0.05), however a correlation was found in the conventional denture group (p < 0.05). Therefore, these short-term results suggest that mandibular overdenture retained by 2 implants with immediate loading combined with maxillary conventional dentures provide better masticatory efficiency and oral health–related quality of life than mandibular conventional dentures.