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Objective: The aim of this study was to verify the applicability of Moyer's prediction tables to estimate the mesio-distal diameter of canines and pre-molars in a population of North-Eastern Brazil. Materials and Methods: A sample of 100 plaster moulds of 12-18-year-old patients was selected from the dental archives of the Brazilian Association of Orthodontists Dental School Clinic in the city of João Pessoa, State of Paraiba. Analyses were performed with R software (version 3.1.3). The upper and lower canines and premolars on both sides of the arch were measured. Data Analysis: Linear regression analysis was used to assess the closeness of the estimated values in each percentile of Moyer's prediction table. Analyses were performed at a significance level of 5%. Results: Gender dimorphism (P < 0.001) was found in both upper and lower arches. In the upper arch, the best regression models for data analysis of female, male and both were, respectively, p5 and p6", p25 and p35, and p35 and 75, whereas in the lower arch were p15, p35 and p75, with "p75 being the best-fitted percentile following application of correction equations for both genders. Conclusions: The Moyer's prediction table can be applied for estimating the mesio-distal diameters of canines and pre-molars, provided that a correction factor is used for the population under study. Citation: Galdino AS, et al. (2019) Applicability of Moyer's prediction tables to estimate the mesio-distal diameter of canines and premolars. Dentistry 3000.

Objective: Cleft lip and/or palate is the most common congenital anomaly in a human face, with a multifactorial and complex etiology. Although many studies have been developed, the role of the environment is still unclear. This study aims to test the hypothesis that differences in lifestyle and environment change the reproductive risks of orofacial clefts.Methods: A total of 2,422 medical records of individuals born with cleft lip and/or palate in a reference center in the northeast of Brazil over a period of 30 years were analyzed. Data on the cleft type, geographic origin of the patient (coast or inland), presence of associated congenital anomalies or syndromes, maternal age, and maternal parity were recorded. Differences in frequencies between the cleft types were compared based on geographic origin, maternal age, and parity. Chi-square, Student's t, Kruskal–Wallis, and logistic regression were used to analyze the interference of covariables on the cleft type.Results: The distribution of cleft types was significantly different between the coastal and inland areas (chi-square test, p &lt; 0.0001). A higher frequency of cleft lip with or without palate was observed the inland area (chi-square test, p = 0.0006), while cleft palate only (chi-square test, p = 0.003) and rare facial clefts (chi-square test, p = 0.004) were more frequent in the coastal area. No difference was found in the distribution of maternal age (t-test, p &gt; 0.05) between the two geographic areas, but parity was higher inland (t-test, p = 0.04). Logistic regression suggested that parity explained just a small portion of the differences in frequency between cleft types of the coast vs. inland.Conclusion: Frequency of orofacial cleft types differs by geographic area in this region of the South American continent.