Comparison of mineral trioxide aggregate and calcium hydroxide for apexification of immature permanent teeth: A systematic review and meta-analysis.

BACKGROUND/PURPOSE: Calcium hydroxide and mineral trioxide aggregate (MTA) are used for inducing a calcific barrier at an open tooth root (apexification). The purpose of this study was to compare the efficacy of calcium hydroxide and MTA for apexification of immature permanent teeth. METHODS: Medline, Cochrane, EMBASE, and Google Scholar were searched until November 24, 2015, using the keywords apexification, permanent teeth, MTA, and calcium hydroxide. RESULTS: Of 216 studies identified, four studies were included. There were no differences in the clinical success rate [pooled odds ratio (OR) = 3.03, 95% confidence interval (CI): 0.42-21.72, p = 0.271], radiographic success rate (pooled OR = 4.30, 95% CI: 0.45-41.36, p = 0.206), or apical barrier formation rate (pooled OR = 1.71, 95% CI: 0.59-4.96, p = 0.322) between calcium hydroxide and MTA groups. The time required for apical barrier formation was significantly less in the MTA group (pooled difference in means = -3.58, 95% CI: from -4.91 to -2.25, p < 0.001). CONCLUSION: While both materials provide similar success rates, the shorter treatment time with MTA may translate into higher overall success rates because of better patient compliance.

Treatment outcomes of mucosal melanoma of the head and neck: Analysis of 190 cases from a single institution.

Objectives: To analyze the treatment outcomes and prognostic factors of mucosal melanoma of the head and neck (MMHN) from a single institution. Methods: From December 1989 to November 2018, 190 patients diagnosed with MMHN were included. Survival analysis was performed using the Kaplan-Meier method for univariate analysis with a log-rank test for significance and Cox regression for multivariate analysis. Results: With a median follow-up time of 43.5 months, 126 (68.5%) patients died. The median DSS was 35 months. The 3- and 5-year disease-specific survival (DSS) rates were 48.1% and 33.7%, respectively. The median overall survival (OS) was 34 months. The 3- and 5-year OS rates were 47.0% and 32.9%, respectively. In univariate analysis, the T3 stage, received surgery, R0 resection, and combined therapy (surgery+biotherapy/biochemotherapy) were significantly associated with better survival. Multivariable Cox regression analysis revealed that the T4 stage (HR = 1.692; 95% CI, 1.175-2.438; p = .005) and the N1 stage (HR = 1.600; 95% CI, 1.023-2.504; p = .039) were strong prognostic factors for poor survival, and that combined therapy (surgery+biotherapy/biochemotherapy) was a strong prognostic factor for better survival outcome (HR = 0.563; 95% CI, 0.354-0.896; p = .015). Conclusion: The prognosis of MMHN remains poor. Systemic treatment is warranted to reduce MMHN progression. Surgery combined with biotherapy may improve survival.

[Development of Chinese version of children's fear survey schedule-dental subscale].

OBJECTIVE: To establish the Chinese version of the modified children's fear survey schedule-dental subscale (CFSS-DS). METHODS: The original English version of CFSS-DS with facial image scale (FIS) was translated into Chinese, pre-tested and cross-culturally adapted. Subsequently the Chinese version schedule was randomly investigated among 367 children aged 5 - 12 years and their parents. Reliability and validity of the translated scale was evaluated later. RESULTS: Totally 367 children were investigated and 311 valid questionnaire was received. Cronbach's alpha of the translated scale was 0.85 and test-rest reliability was 0.73. The 15 items were divided into four domains. There was a certain logical relationship between the items among the same domains. There was highly significant association between the self-report of the Modified CFSS-DS and Frankl Behavioral Scale (r(s) = -0.403, P < 0.01). CONCLUSIONS: The Chinese version of modified CFSS-DS has been established successfully with good psychometric properties which provide the theoretical evidence for further application in Chinese population.