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Gaceta médica de México
versão On-line ISSN 2696-1288versão impressa ISSN 0016-3813
Resumo
FUENTE-DEL CAMPO, Antonio e REYES-CURENO, Daniel. Determination of mandibular distraction osteogenesis most suitable parameters. An experimental study. Gac. Méd. Méx [online]. 2024, vol.160, n.1, pp.73-80. Epub 26-Mar-2024. ISSN 2696-1288. https://doi.org/10.24875/gmm.23000367.
Background:
Distraction osteogenesis is a process of induced bone generation. Various protocols have been described for the management of the latency period, distraction speed and consolidation period, with greater or lesser success.
Objective:
To better understand the process of mandibular distraction and establish the determining factors and their optimal times.
Material and methods:
Twenty-seven dogs were studied, which had 54 distractors placed and that underwent unidirectional, bilateral mandibular distraction osteogenesis. The distraction processes were applied using six variants, two for each factor: latency period, distraction period and distraction speed. The changes were examined by means of bone biopsies and X-rays of the area at 0, 7, 14, 21, 45 and 55 days of the process.
Results:
The most efficient osteogenic distraction parameters were a latency period of five days, a consolidation period of six weeks, distraction speed of 1 mm/day for distances of less than 20 mm, and 3 mm/day for longer distances.
Conclusions:
The sequential histological study allowed to observe the appearance of cellular elements (osteocytes, osteoclasts, osteoid matrix, trabeculate, etc.) and their participation in granulation tissue, newly-formed bone and compact mature bone.
Palavras-chave : Corticotomy; Distraction osteogenesis; Craniofacial malformations; Induced osteogenesis.