Abstract

CUMBA MORAN, Aracely; RUIZ DIAZ, Roberto  and  MELENDEZ OCAMPO, Arcelia. Comparative analysis of final inclination of incisors after space closure. A comparison between sliding and translation mechanical techniques. Rev. Odont. Mex [online]. 2012, vol.16, n.3, pp.159-163. ISSN 1870-199X.

Patients will undoubtedly benefit when having teeth well placed in all space planes, within their bone base. Therefore, in many cases, teeth extractions become necessary. The aim of the present study was to determine whether there were statistically significant differences in tooth movement, specifically in the anterior segment of the mouth, when comparing mechanical translation and sliding mechanical techniques. Sixty lateral skull x-rays were selected. Study groups were formed: 30 were subject to translation mechanical technique, and the remaining 30 to sliding technique. Measurements were taken by the same professional. Variable averages were compared before and after treatment, to determine the existence of statistically significant differences. Final measurements with both space closure techniques were compared. Results showed the presence of statistically significant differences in the translation technique with respect to variables (overjet, overbite, IMPA, II-NB, 1-SN, 1 Fh) before and after treatment. This was not the case for the following variables (1S-NA, occlusal 1-Pl, inter-incisal angle). It was equally observed that in the sliding mechanical technique there were statistically significant differences found in the variable II-NB). This was not the case for the other variables (overbite, overjet, 1S-NA, 1Sn, 1Fh, 1-Ocl. Pl. LIMA, Inter-incisive A). We therefore beg to conclude that translation mechanical technique is the one that brings us closer to cephalometric data norms with respect to final position of the incisors.

Keywords : Incisor position; cephalometric changes.