Accuracy evaluation of a radiographic-surgical guide for mini-implant placement / Avaliação da precisão de um guia radiográfico-cirúrgico para inserção de mini-implantes

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

OBJECTIVE This study evaluated the radiographic-surgical guide accuracy to predict post-surgical mini-implant positioning in the interradicular septum. Additionally, a risk index to standardize surgical procedure indication for mini-implant insertion was determined. MATERIAL AND METHODS A total of fifty-three titanium mini-implants were placed in the buccal interradicular septum of the posterior maxillary and/or mandibular region of 27 patients with a mean age of 19.17 ± 9.06 years (ranging from 12.72 to 56.37 years). The Graduated Radiographic-Surgical Guide (GRSG) was used to insert mini-implants in the interradicular septum in a centralized and equidistant position regarding adjacent tooth roots. The fifty-three post-surgical radiographs were used to measure the distances between mini-implants and adjacent tooth roots to evaluate GRSG accuracy in obtaining mini-implant centralized position in the septum. The GRSG inaccuracy degree was related to the septum width and the mini-implant diameter to obtain risk index formula, which was used to predict surgical risks during mini-implants insertion. RESULTS The GRSG inaccuracy degree showed that, on average, the mini-implants were 0.13mm (±0.13) displaced regarding the centralized position initially intended. The risk index (RI) presented a mean value smaller than 1, indicating a reduced surgical risk. CONCLUSION The link established between radiographic and surgical procedures propitiated a small GRSG inaccuracy degree of 0.13mm, allowing an accurate prediction of the final mini-implant positioning in the interradicular septum, which contributed to a low surgical risk (RI<1).

ASSUNTO(S)

complicações accident acidente prevention complication mini-implant surgical guide prevenção mini-implante guia cirúrgico

ACESSO AO ARTIGO

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