Method for evaluation of transverse dimension in self-ligating orthodontic treatment: a comparative study

Folco, Alejandra Alicia; Benítez Rogé, Sandra C; Calabrese, Diana; Lumi, María; Hecht, Juan Pedro; Mateu, María Eugenia

Knowledge of the best way to evaluate changes in transverse dimension produced by orthodontic treatment enables the estimation of potential space that may be generated and optimizes planning. The aim of this study was to compare two methods for measuring changes in transverse dimension following tooth alignment by passive selfligating system: Method 1 (M1) considering palatal landmarks and Method 2 (M2) considering dental landmarks. Subjects were 12 patients of both sexes, aged 15 to 24 years old, with moderate crowding (Nance discrepancy 4 to 6 mm), who were treated with the Damon System at the Department of Orthodontics of the School of Dentistry, Buenos Aires University. Their preand posttreatment maxillary casts were analyzed (24 casts altogether). Five measurements were taken on each cast: intercanine width, first and second interpremolar width and first and second intermolar width, using the two measurement methods (M1 and M2). Both methods found average width to have increased, though this increase was smaller as measured by M1 than by M2, with statistically significant difference between values (p<0.05). M1 and M2 provided significantly different measurements for first and second interpremolar and first intermolar distances (p< 0.05). The values obtained using M1 (palatal landmarks for teeth) present less variation and provide information on the changes in the dental arches without adding tooth tipping. Considering M1, the greatest gain in transverse dimension occurred in first and second interpremolar distance, there was a slight increase in intercanine and first intermolar distance, and a decrease in second intermolar distance (AU)

BVS Odontologia

Informação e Conhecimento para a Saúde

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Method for evaluation of transverse dimension in self-ligating orthodontic treatment: a comparative study

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