Tracionamento ortodôntico: possíveis consequências nos caninos superiores e dentes adjacentes

Perfuração do esmalte para o tracionamento de caninos: vantagens, desvantagens, descrição da técnica cirúrgica e biomecânica

“…Extraction of the unerupted tooth triggers a process of regression and re-covering of the resorbed area by new cementoblasts, with deposition of a new layer of cementoblasts and reattachment of periodontal fibers. 14,15 Thus, it is advisable to increase the space between the teeth in the upper arch so that the unerupted tooth can lodge itself in the area enclosing the DF and its crown. For the purpose of having a measurable parameter, it is recommended that the mesiodistal distance from the canine crown be calculated and the result multiplied by 1.5.…”

“…This is not always possible from a clinical point of view, but the use of this criterion and measurement represents a starting point for decision making relevant to each case. 14,15 Often, this space cannot be obtained. An alternative that might prevent this inconvenience is to divert the eruption pathway of the canine undergoing traction to a site outside the region of conflict with the roots of adjacent teeth.…”

“…By moving an unerupted canine through orthodontic traction, whenever possible, the dental follicle is also moved away, which is usually sufficient to stop root resorption and repair the surface. 14,15 The mechanics of choice for unerupted canine traction should be fully tailored to suit each individual. Thus, straight wire mechanics, admittedly ineffective in this regard, should be avoided for this purpose.…”

“…The space required for the physiological eruption of an unerupted canine is, in theory, 1.5 times the mesiodistal size of the canine crown, a necessary condition for eruption to occur without orthodontic assistance. 12,15 In patients with unerupted canines, the corresponding deciduous teeth are usually found in the arch and their mesiodistal dimension is much smaller than that of the permanent canine. Creating space in the analogous arch for the mesiodistal dimension of the unerupted canine is a daunting task and often impossible to achieve, especially if the goal is to increase space by 50%.…”

Tratamento cirúrgico-ortodôntico do dente 33: relato de caso clínico

“…Tracionamento é o procedimento utilizado quando se deseja aplicar uma força extrusiva ao dente impactado para que se consiga deslocá-lo em direção à cavidade bucal e posicioná-lo em condições estéticas e funcionais 7 . No entanto, casos como esse requer alguns cuidados, pois a permanência do dente impactado ou o tracionamento em si podem afetar fatores biológicos e gerar algumas consequências locais 10 . A reabsorção das raízes dos incisivos laterais e pré-molares é uma das consequências devido à proximidade do folículo pericoronário que reveste a coroa do canino impactado.…”