RESUMO

OBJECTIVES: To determine the effect of triclosan-containing fluoride toothpaste on the clinical parameters and the osteo-immunoinflammatory mediators in the peri-implant fluid when applied in a stent during experimental peri-implant mucositis in smokers. MATERIALS AND METHODS: Twenty-six smokers with an implant-supported crown were enrolled in this double-blind, randomized, crossover study. During the two 3-week periods without mechanical toothbrushing (washout period: 30 days), patients were randomly assigned to triclosan/fluoride (n:13) or fluoride toothpaste (n:13), three times/day. Clinical and immunoenzymatic assays were performed at baseline, 3, 7, 14 and 21 days. RESULTS: Both groups showed increase in the Plaque Index throughout the study (p = 0.001), without inter-group differences at 21 days (p > 0.05). No intra- or inter-group differences were observed for IFN-γ, IL10, IL-1ß, IL8, IL-17, IL-6, TNF-α, MMP-2, MMP-9, TGF-ß, OC, OPN, ICTP, OPG and RANKL (p > 0.05). However, the RANKL/OPG ratio was significantly higher in fluoride toothpaste-treated sites when compared to triclosan/fluoride-treated sites at the end of period without mechanical toothbrushing, on the 21st day (p = 0.041). CONCLUSION: Triclosan-containing toothpaste favorably modulated osteo-immunoinflammatory mediators during the experimental peri-implant mucositis in smokers, decreasing the ratio of RANKL/OPG.

Assuntos

RESUMO

PURPOSE: To evaluate the survival rate in restored teeth with three different types of retainers prior to the fixing of crowns with zirconia through this retrospective clinical study. It is unclear how the type of post and core rehabilitation, and type of resin cement affect the longevity of teeth restored with crowns. METHODS: In a private clinic, a total of 101 retainers installed by the same professional between June 2008 and January 2018, with an average time of 58.2 months (4.8 years), were analyzed regarding the following factors: survival, cement and failure type. Three types of retainers were used according to the indications found in the literature: filling with Z250 light-cured composite resin, 22 elements; fiberglass post with Z250 light-cured composite resin, 45 elements; and cast metallic core in silver-tin alloy, 34 elements. The retainers were cemented with chemically cured cement, U100, U200, or Panavia F. RESULTS: Data were subjected to Kaplan-Meier analysis (p=0.495). Although the study presented several limitations, no significant differences were observed in the success rates between the types of intra-radicular retainers and the type of cement. The success rates were as follows: metal core, 97.1%; fiberglass post, 95.6%; and filling, 100%. On average, failures occurred at 48.4 months. CONCLUSION: In view of the results, it is possible to conclude that the different retainers evaluated have similar survival rates.

RESUMO

The present study assessed the level of dentists' knowledge regarding oral cancer in the city of São Paulo, Brazil. A questionnaire was used to compare the level of knowledge among newly graduated and senior clinicians. A total of 20,154 e-mails were correctly delivered to the dentists registered in the database of the Regional Dentistry Council of São Paulo, and 477 (2.36%) responses were received. This sample consisted of 84 newly graduated clinicians and 105 senior clinicians. For the statistical analysis, the chi-square test and the logistic regression analysis were performed with α = 0.05, and the results were described herein. According to their knowledge level, the results were statistically different between the groups, since 19% of the newly graduated clinicians were evaluated with knowledge grade A (excellent) in comparison to 6.7% of the senior clinicians. In spite of the results indicated that newly graduated clinicians' knowledge regarding oral cancer was 2.1 times higher, 34.5% of the professionals in this group had regular or poor knowledge on the subject, and several questions relating to clinical characteristics and risk factors indicated that there still exist some knowledge gaps, demonstrating that there is a need for further studies and information activities addressing oral cancer.