RESUMO Na literatura, existem várias opções de tratamento para a correção de caninos superiores impactados, desde extrações até procedimentos cirúrgicos seguidos de tracionamentos. Apresentar um caso clínico com uma nova proposta de tratamento para o tracionamento de caninos superiores impactados, visando simplificar a mecânica ortodôntica e estabelecer um resultado satisfatório com menor danos biológicos. Paciente do sexo feminino, 18 anos apresentando um canino superior esquerdo palatalmente impactado com maior inclinação mesial, relação bilateral oclusal de Classe I e perfil facial harmônico. A tração cirúrgica do dente canino foi realizada com um fio de arco superior modificado por uma mola TMA, com a instalação subseqüente do aparelho fixo para correção ortodôntica. Os resultados obtidos foram satisfatórios, proporcionando estética e função adequadas ao caso, mostrando bom paralelismo radicular e intercuspidação, garantindo estabilidade ao tratamento após quatro anos de remoção do aparelho.

ABSTRACT In the literature, there are several treatment options for the correction of upper canines, from extractions to surgical procedures followed by traction. Presenting a clinical case with a new treatment proposal for the traction of impacted upper canines, aiming at simplifying the orthodontic mechanics and establishing a satisfactory result with less biological demand. 18-year old female presenting with a palatally impacted upper left canine with increased mesial inclination, bilateral Class I occlusal relationship and harmonic facial profile. The surgical traction of the canine tooth was performed with an upper fixed arch wire, modified by a TMA spring, with subsequent set up of the fixed appliance for orthodontic correction. The achieved results were satisfactory, providing suitable aesthetic and function to the case, showing good root parallelism and intercuspation, ensuring stability to treatment after four years of the appliance removal.

Absence of the maxillary lateral incisor creates an aesthetic problem which can be managed in various ways. The condition requires careful treatment planning and consideration of the options and outcomes following either space closure or prosthetic replacement. Recent developments in restorative dentistry have warranted a re-evaluation of the approach to this clinical situation. Factors relating both to the patient and the teeth, including the presentation of malocclusion and the effect on the occlusion must be considered. The objective of this study was to describe the etiology, prevalence and alternative treatment modalities for dental agenesis and to present a clinical case of agenesis of the maxillary lateral incisors treated by the closure of excessive spaces and canine re-anatomization. A clinical case is presented to illustrate the interdisciplinary approach between orthodontics and restorative dentistry for improved esthetic results. In this report, the treatment of a girl with a Class II malocclusion of molars and canines with missing maxillary lateral incisors and convex facial profile is shown. Treatment was successfully achieved and included the space closure of the areas corresponding to the missing upper lateral incisors, through movement of the canines and the posterior teeth to mesial by fixed appliances as well as the canines transformation in the maxillary lateral incisors. This is a 14-year follow-up case report involving orthodontics and restorative dentistry in which pretreatment, posttreatment, and long-term follow-up records for the patient are presented.

Objective: The long face pattern is a facial deformity with increased anterior total facial height due to vertical excess of the lower facial third. Individuals with long face may present different degrees of severity in vertical excess, as well as malocclusions that are difficult to manage. The categorization of vertical excess is useful to determine the treatment prognosis. This survey assessed the distribution of ethnically different individuals with vertical excess according to three levels of severity and determined the prevalence of long face pattern. Material and Methods: The survey was comprised of 5,020 individuals of Brazilian ethnicity (2,480 females and 2,540 males) enrolled in middle schools in Bauru-SP, Brazil. The criterion for inclusion of individuals with vertically impaired facial relationships was based on lip incompetence, evaluated under natural light, in standing natural head position with the lips at rest. Once identified, the individuals were classified into three subtypes according to the severity: mild, moderate, and severe. Then the pooled sample was distributed according to ethnical background as White (Caucasoid), Black (African descent), Brown (mixed descent), Yellow (Asian descent) and Brazilian Indian (Brazilian native descent). The Chi-square (χ 2 ) test was used (p<0.05) to compare the frequency ratios of individuals with vertically impaired facial relationships in the total sample and among different ethnicities, according to the three levels of severity. Results: The severe subtype was rare, except in Black individuals (7.32%), who also presented the highest relative frequency (45.53%) of moderate subtype, followed by Brown individuals (43.40%). In the mild subtype, Yellow (68.08%) and White individuals (62.21%) showed similar and higher relative frequency values. Conclusions: Black individuals had greater prevalence of long face pattern, followed by Brown, White and Yellow individuals. The prevalence of long face pattern was 14.06% in which 13.39% and 0.68% belonged to moderate and severe subtypes, respectively.

OBJETIVO: investigar até que ponto as dimensões mesiodistais e vestibulolinguais das coroas dos incisivos inferiores contribuem para a estabilidade da correção do apinhamento ântero-inferior. METODOLOGIA: foram avaliados 56 pacientes leucodermas, de ambos os gêneros (27 feminino e 29 masculino), que inicialmente apresentavam má oclusão de Classe I ou de Classe II, divisão 1 (28 cada), tratados com extrações dos quatro primeiros pré-molares e com mecânica Edgewise. Nenhum caso foi submetido a desgastes interproximais durante ou após o tratamento. As medidas foram realizadas nos modelos de estudo obtidos de cada caso nas fases pré, pós-tratamento e pós-contenção, totalizando na avaliação de 168 modelos inferiores. A idade média pré-tratamento foi de 13,23 anos, o tempo de tratamento de 2,11 anos e pós-tratamento foi de 5,12 anos. O índice de irregularidade de Little foi utilizado para quantificar o apinhamento ântero-inferior e o índice de Peck e Peck para mensuração das dimensões mesiodistais e vestibulolinguais dos mesmos. O teste de correlação de Pearson foi utilizado para determinar a significância de correlação entre a morfologia das coroas dos incisivos inferiores e a estabilidade. Secundariamente, investigou-se a presença de dimorfismo entre os gêneros e a existência de diferença entre os dois tipos de má oclusão inicial, em relação à estabilidade da correção do apinhamento ântero-inferior, utilizando o teste t independente. RESULTADOS E CONCLUSÕES: concluiu-se que a morfologia da coroa dos incisivos inferiores apresentou uma fraca correlação com a estabilidade pós-contenção. Nem o gênero dos pacientes, nem o tipo de má oclusão inicial influenciaram na estabilidade da correção do apinhamento ântero-inferior, cinco anos pós-tratamento.

AIM: This study investigated the extent to which the mesiodistal and buccolingual dimensions of the crowns of mandibular incisors contribute with the stability of correction of mandibular anterior crowding. METHODS: For that purpose, 56 white patients of both genders (27 females and 29 males) were evaluated, who initially presented Class I or Class II division 1 malocclusion (28 patients each), treated with extraction of the four first premolars and edgewise mechanics. No interproximal stripping was performed during or after treatment. Measurements were performed on the dental casts achieved from each case at pretreatment, posttreatment and postretention, adding up to 168 mandibular dental casts. The mean age at pretreatment was 13.23 years, the mean treatment time was 2.11 years and the mean post-retention time was 5.12 years. The Little irregularity index was used to quantify the mandibular anterior crowding, and the Peck and Peck index was applied for measurement of the mesiodistal and buccolingual ratios of the crowns of mandibular incisors. The Pearson correlation test was applied to determine the significance of correlation between the morphology of the crowns of mandibular incisors and stability. Dimorphism between genders and the existence of difference between the two types of initial malocclusion were also investigated by the independent t test. RESULS AND CONCLUSION: Analysis of the results revealed that the morphology of crown of mandibular incisors was not significantly correlated with postretention stability. The gender and type of initial malocclusion also did not influence the stability of correction of mandibular anterior crowding at five years posttreatment.