Objective: Mandibular Class II malocclusions seem to interfere in upper airways measurements. The aim of this study was to assess the upper airways measurements of patients with skeletal Class II malocclusion in order to investigate the association between these measurements and the position and length of the mandible as well as mandibular growth trend, comparing the Class II group with a Class I one. Methods: A total of 80 lateral cephalograms from 80 individuals aged between 10 and 17 years old were assessed. Forty radiographs of Class I malocclusion individuals were matched by age with forty radiographs of individuals with mandibular Class II malocclusion. McNamara Jr., Ricketts, Downs and Jarabak's measurements were used for cephalometric evaluation. Data were submitted to descriptive and inferential statistical analysis by means of SPSS 20.0 statistical package. Student's t-test, Pearson correlation and intraclass correlation coefficient were used. A 95% confidence interval and 5% significance level were adopted to interpret the results. Results: There were differences between groups. Oropharynx and nasopharynx sizes as well as mandibular position and length were found to be reduced in Class II individuals. There was a statistically significant positive correlation between the size of the oropharynx and Xi-Pm, Co-Gn and SNB measurements. In addition, the size of the nasopharynx was found to be correlated with Xi-Pm, Co-Gn, facial depth, SNB, facial axis and FMA. Conclusion: Individuals with mandibular Class II malocclusion were shown to have upper airways measurements diminished. There was a correlation between mandibular length and position and the size of oropharynx and nasopharynx.

The data suggest favorable outcomes, with 75 % of cases with no need of orthognathic surgery. The Kappa values confirmed the high reproducibility of the GOSLON yardstick.

The aim of this study was to investigate the effect of orthodontic treatment on the maxillofacial growth of patients with unilateral cleft lip and palate. The Great Ormond Street, London and Oslo (GOSLON) yardstick was used for a longitudinal evaluation of 24 patients with cleft lip and palate treated at the Cleft Center of the Lauro Wanderley University Hospital, Paraiba State, northeastern Brazil. Dental casts were evaluated by 3 orthodontists and classified according to the GOSLON yardstick. The evaluation was performed at 2 different stages: T1 (before orthodontic treatment) and T2 (follow-up evaluation) after a 6-year mean follow-up interval. The Kappa test was used to evaluate intra- and interexaminer agreement, and paired t-test was used to compare the differences between T1 and T2, with a 99% confidence interval. The average intraexaminer Kappa was 0.979, ranging from 0.971 to 0.990. The interexaminer Kappa value was 0.926 at T1, ranging from 0.885 to 0.964, and 0.896 at T2, ranging from 0.696 to 1.0. The mean GOSLON yardstick found at T1 was 2.5 ± 1.18 with 50% in G1 + G2, 29.18% in G3, and 20.82% in G4 + G5. At T2, the GOSLON average was 1.71 ± 1.12, with 79.18% in G1 + G2, 12.5% in G3, and 8.32% in G4 + G5. A statistically significant difference was found between T1 and T2. The results suggest that orthodontic treatment improves facial growth in patients with unilateral cleft lip and palate.

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.

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Introdução: A idade dentária representa um aliado na avaliação da idade fisiológica, que comparada a idade cronológica, podem orientar quanto as alterações de desenvolvimento. Objetivo: Avaliar o atraso de desenvolvimento dental relacionado a idade cronológica do indivíduo portador de fissura labiopalatina. Material e método: Para realização da revisão da literatura foi utilizada abordagem indutiva e técnica documental baseada na literatura pré-existente sobre o assunto. A pesquisa abrange a busca de artigos publicados nas bases de referências bibliográficas PUBMED, Portal de Periódicos CAPES, SCIELO e BIREME. Utilizou-se como descritores: “odontogênese”, “fissura labial”, “fissura palatina”, “odontogenesis”, “cleft lip” e “cleft palate”. Resultados: Após excluídas as duplicatas, 34 artigos foram encontrados nas bases de dados selecionadas. Sendo 32 na base Pubmed, 25 na base Bireme, 04 no Portal de Periódicos CAPES e nenhum na base Scielo. Destes, 04 foram selecionados para análise. Conclusão: Pode-se concluir com esse trabalho que existe um atraso no desenvolvimento dentário de pacientes com fissura lábiopalatina em relação aos pacientes não fissurados e um atraso no desenvolvimento dentário de 6 meses deve ser considerado ao planejar o tratamento e cirurgias. É inconclusiva a diferença relacionada ao gênero.Descritores: Odontogênese; Fissura Labial; Fissura Palatina.ReferênciasVellini-Ferreira F. Ortodontia: Diagnóstico e Planejamento Clínico. 7. ed. São Paulo: Artes Médicas Ltda; 2008.Carrara CFC. Estudo da cronologia e sequência de erupção e das agenesias dos dentes permanentes em indivíduos brasileiros, leucodermas, portadores de fissura transforame incisivo unilateral [dissertação]. Bauru: Faculdade de Odontologia de Bauru - USP; 2000.Carvalho AAF, Carvalho A, Santos Pinto MC. Estudo radiográfico do desenvolvimento da dentição permanente de crianças brasileiras com idade cronológica variando entre 84 e 131 meses. Rev. Odonto UNESP. 1990;19:(1):31-9.Toledo OA. Aspectos da cronologia de erupção dos dentes permanentes. Considerações sobre o efeito da urbanização na alteração da cronologia eruptiva. Rev. Odontol Araçatuba.1965;1:47-64.Loevy HT, Aduss H. Tooth maturation in cleft lip, cleft palate, or both. Cleft Palate J.1988; 25(4):343-47.Ellis III. Management of Patients with Orofacial Clefts. In: Hupp, Ellis III, Tucker. Contemporary oral and maxillofacial surgery, 6ª th. Misssouri: Elsevier; 2014.Freitas e Silva DS, Mauro LDL, Oliveira LB, Ardenghi TM, Bönecker M. Estudo descritivo das fissuras lábio-palatinas relacionadas a fatores individuais, sistêmicos e sociais. RGO. 2008;56(4):387-91.Conway JC, Taub PJ, King R, Oberoi K, Doucette J, Jabs EW. Ten-year experience of more than 35,000 orofacial clefts in Africa. BMC Pediatr. 2015;15:8.Faraj JORA, André M. Alterações dimensionais transversas do arco dentário com fissura labiopalatina, no estágio de dentadura decídua. R Dental Press Ortodon Ortop Facial. 2007; 12(5):100-8.Silva Filho OG, Freitas JAS. Caracterização Morfológica e Origem Embriológica. In: Trindade IEK, Silva Filho OG (orgs). Fissuras labiopalatinas: uma abordagem interdisciplinar. São Paulo: Santos; 2007.p.17-49.Watson ACH. Embriologia, etiologia e incidência. In: Watson ACH, Sell DA, Grunwell P (orgs). Tratamento de fissura labial e fenda palatina. São Paulo: Santos; 2005.p.3-15Lages EMB, Marcos B, Pordeus IA. Oral health of individuals with cleft lip, cleft palate, or both. Cleft Palate-Craniofac J. 2004;41(1):59-63.Zandi M, HeidarI A. An epidemiologic study of orofacial clefts in Hamedan city, Iran: a 15-year study. Cleft Palate–Craniofac J. 2011;48(4 ):483-89.Coutinho ALF, Lima MC, Kitamura MAP, Ferreira Neto J, Pereira RM. Perfil epidemiológico dos portadores de fissuras orofaciais atendidos em um Centro de Referência do Nordeste do Brasil. Rev. Bras Saúde Mater Infant. 2009;9(2):149-56.Tan EL, Yow M, Kuek MC, Wong HC. Dental maturation of unilateral cleft lip and palate. Ann Maxillofac Surg. 2012;2(2):158-62.Lakatos EM, Marconi MA. Fundamentos de metodologia científica. 7 ed. São Paulo: Atlas, 2010.Borodkin AF, Feigal RJ, Beiraghi S, Moller KT, Hodges JS. Permanent tooth development in children with cleft lip and palate. Pediatr Dent. 2008; 30:408-13.Lai MC, King NM, Wong HM. Dental development of Chinese children with cleft lip and palate. Cleft Palate Craniofac J. 2008; 45:289-96.Tan ELY, Kuek MC, Wong HC, Yow M. Longitudinal dental maturation of children with complete unilateral cleft lip and palate: a case-control cohort study.Orthod Craniofac Res.2017; 20(4):189-95.Celebi AA, Ucar FI, Sekerci AE, Caglaroglu M, Tan E. Effects of cleft lip and palate on the development of permanent upper central incisors: a cone-beam computed tomography study. Eur J Orthod. 2015; 37(5):544-49.Ranta R. A comparative study of tooth formation in the permanent dentition of Finnish children with cleft lip and palate. Proc Fin Dent Soc. 1972;68(2):58-66.

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