Influence of miniscrew dental root proximity on its degree of late stability

Autor(es)

Janson, G. ^[1] ; Gigliotti, M. P. ^[1] ; Estelita, S. ^[1] ; Chiqueto, K. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Bauru Dent Sch, Dept Orthodont, BR-17012901 Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Oral and Maxillofacial Surgery; v. 42, n. 4, p. 527-534, APR 2013.
• Citações Web of Science: 12

Resumo

Purpose of this study was to evaluate the influence of miniscrew dental root proximity on its late stability degree. 40 miniscrews were inserted between maxillary second premolars and first molars for anterior retraction. Post-surgical radiographs were used to measure the septum width in the insertion site, insertion height, distal and mesial distance from miniscrew to dental root, and the smallest distance between miniscrew and dental root. The miniscrews were divided in two groups according to septum width: <= 3 mm (20 miniscrews) and >3 mm (20 miniscrews). The soft tissue in the insertion site, sensitivity during load, plaque around the miniscrew, and evaluation period were also considered. The results showed no significant difference in miniscrew mobility degree and success rate between groups Miniscrew dental root proximity did not influence the stability and success rate when the distance between the miniscrew and dental root indicated no periodontal ligament invasion. The overall success rate was 90% and no variable was associated with miniscrew failure. Nevertheless, patient sensitivity was frequently associated with some degree of mini-implant mobility. The septum width did not influence the stability and success rate of this anchorage system, but the extreme root proximity did. (AU)

• Processo FAPESP: 07/01862-5 - Influência da proximidade entre o miniimplante e as raízes dentárias sobre o grau de estabilidade
• Beneficiário: Mariana Pracucio Gigliotti
• Modalidade de apoio: Bolsas no Brasil - Mestrado