Dentoalveolar distraction osteogenesis for rapid orthodontic canine retraction

Reposição cirúrgico-ortopédica de implante mal posicionado: relato de caso

“…A distração osteogênica é uma técnica de alongamento ósseo gradual que foi introduzida por Codivilla em 1905 e popularizada nos anos 70 por Ilizarov em ortopedia 8 . A distração é realizada com uma média de 1mm ao dia e a formação óssea dentro do espaço da distração ocorre devido ao efeito tensão-pressão criado pelo dispositivo 3 .…”

Retração rápida de caninos

“…In 2002, Kisnisci et al 8 introduced another technique for rapid canine retraction. In this approach, known as dentoalveolar distraction (DAD), the segment that contains the canine is transported as a bone block.…”

“…2,3,7,8,11,16 These indications are justified by the fact that, since tooth movement is accomplished very quickly, with the canine being completely distalized in about two to three weeks without anchorage loss, the remaining space can be used for the rapid resolution of crowding. During conventional orthodontic movement, the process of root resorption only begins two or three weeks after the application of a given force, and may continue for as long as this force continues to be delivered.…”

“…9,11,15 Moreover, since RCR allows canines to complete all distal movement while the remaining teeth are still stationary, 4 both the mesial movement of molars, i.e., loss of anchorage, and root resorption either have not yet taken place or are still just beginning. 7,8,11,12,13,16,17 This benefits those patients who require premolar extractions and present with major periodontal issues.…”

“…2,3,8,10,11,16,17,18 Disadvantages include the need for a specific surgical procedure and a supervised activation protocol, in addition to difficulties in fabricating distractors using Hyrax-type expanders, as devices suitable for this purpose are not yet available on the domestic market.…”