RESUMO Introdução: A movimentação osseodentária induzida ocorre meio de uma sincronicidade de fenômenos dentários e ósseos, graças à rede osteocítica, uma rede tridimensional de controle do formato ou design ósseo. Objetivo: Descrever a movimentação osseodentária induzida com ancoragem ampliada, dividindo-a em três momentos distintos: zero, start e stop. Questionamento: Dessa descrição origina-se a principal pergunta: com o uso de mini-implantes/miniplacas, o que muda na biologia da movimentação osseodentária induzida? A resposta é: não muda nada, nem biologicamente, nem microscopicamente. Conclusão: O que se otimiza, com essa técnica, é o tempo de tratamento, e se amplia o leque de possibilidades terapêuticas, graças à sincronicidade dos fenômenos - que continuam sendo os mesmos, em todos os dentes e nos ossos, só que de forma sincronizada. A ancoragem óssea representa a sincronicidade na movimentação osseodentária induzida.

ABSTRACT Introduction: Induced tooth-bone movement occurs by a synchronicity of dental and bone phenomena, thanks to the osteocytic network, which is a three-dimensional network that controls the bone shape or design. Objective: To describe the tooth-bone movement induced by enhanced anchorage, divided into three distinct moments: zero, start and stop. Question: From this description, the main question arises: with the use of mini-implants/miniplates, what changes in the biology of induced tooth-bone movement? The answer is: nothing changes, either biologically or microscopically. Conclusion: This technique optimizes the treatment time, and the range of therapeutic possibilities is broadened, thanks to the synchronicity of phenomena - which remain the same, in all teeth and bones, yet in a synchronized manner. Bone anchorage represents synchronicity in induced tooth-bone movement.

Abstract Objective The aim of this retrospective study was to evaluate the long-term effects of orthodontic traction on root length and alveolar bone level in impacted canines and adjacent teeth. Material and Methods Sample consisted of 16 patients (nine males and seven females), mean initial age 11 years and 8 months presenting with unilaterally maxillary impacted canines, palatally displaced, treated with the same surgical and orthodontic approach. Teeth from the impacted-canine side were assigned as Group I (GI), and contralateral teeth as control, Group II (GII). The mean age of patients at the end of orthodontic treatment was 14 years and 2 months and the mean post-treatment time was 5 years and 11 months. Both contralateral erupted maxillary canines and adjacent teeth served as control. Root length and alveolar bone level (buccal and palatal) were evaluated on cone-beam computed tomography (CBCT) images. The comparison of root length and alveolar bone level changes between groups were assessed by applying paired t-test, at a significance level of 5% (p<0.05). Results There were no statistically significant differences in root length and buccal and palatal bone levels of canines and adjacent teeth among groups. Conclusions Impacted canine treatment by closed-eruption technique associated with canine crown perforation, has a minimal effect on root length and buccal and palatal alveolar bone level in both canine and adjacent teeth, demonstrating that this treatment protocol has a good long-term prognosis.

As características cefalométricas de uma amostra de 30 pacientes brasileiros, adultos, leucodermas, Padrão I, selecionados a partir da avaliação morfológica de fotografias do perfil, foram estudadas em telerradiografias laterais com o objetivo de definir um padrão de referência, considerando-se as médias e, principalmente, os desvios padrões para estudos comparativos com amostras portadoras de discrepâncias esqueléticas. Na avaliação do padrão de crescimento facial obteve-se 9,4°± 3,2° para o ângulo do plano palatino e 121,4°± 5,3° para o ângulo goníaco, ambos apresentando dimorfismo sexual. O ângulo do plano mandibular apresentou média de 29,2°± 4,2°, sem diferença entre os gêneros. Os valores obtidos para as alturas faciais total, inferior, média e posterior foram, respectivamente, 123,0mm± 8,3mm; 68,8mm± 6,6mm; 55,9mm± 3,5mm e 62,6mm± 4,7mm. Todas essas variáveis foram significativamente maiores no gênero masculino. Os valores das medidas que definiram a relação maxilo-mandibular corroboraram o equilíbrio esquelético da amostra, pois observou-se 82,2° ± 2,9° para o SNA; 79,8° ± 2,5° para o SNB e 2,4° ± 1,4° para o ANB, sem dimorfismo sexual. Os valores obtidos para os comprimentos efetivos da maxila e da mandíbula foram 95,2mm ± 5,7mm e 124,2mm ± 8,2mm, respectivamente, sendo as variáveis do gênero feminino significativamente menores que as do masculino. Os incisivos superiores e inferiores apresentaram-se mais inclinados que as médias da literatura, ou seja, 115,2° ± 5,5° para o 1.PP e 93,9° ± 5,7° para o IMPA.

The aim of this study was to determine cephalometric characteristics of Pattern I patients, to establish averages, and mainly, standard deviation references to be used comparatively with values of skeletally compromised cases. The sample was comprised by 30 white brazilian adults selected by morphologic facial analysis in lateral photographs. In the study of facial growth pattern, the palatine plane angle was 9,4°± 3,2°, while goniac angle was 121,4°± 5,3°, both with sexual dimorphism. For the mandibular plane angle, the value was 29,2°± 4,2°, without sexual dimorphism. The average values for total, lower, medium and posterior facial height were, respectively, 123,0mm± 8,3mm, 68,8mm± 6,6mm, 55,9mm± 3,5mm e 62,6mm± 4,7mm. For all those measures, feminine values were smaller then masculine ones. Cephalometric position of maxillary and mandibular bones confirmed the skeletal balance of the sample. SNA was 82,2° ± 2,9°, SNB was 79,8° ± 2,5° and ANB was 2,4° ± 1,4°, without sexual dimorphism. Maxillary length was 95,2mm ± 5,7mm, while mandibular length was 124,2mm ± 8,2mm, with sexual dimorphism. Upper and lower incisors were more protruded them those of literature samples. Upper incisors were studied by 1.PP angle, and the average was 115,2° ± 5,5°, while the value for IMPA was 93,9° ± 5,7°.