Artículo
Influence of facial types on sliding mechanics
Autor/es | Cadenas-Llano, María
Castillo-Oyague, Raquel Iglesias-Linares, Alejandro Yáñez Vico, Rosa María Solano Reina, José Enrique Torres-Lagares, Daniel |
Departamento | Universidad de Sevilla. Departamento de Estomatología Instituto de Biomedicina de Sevilla (IBIS) |
Fecha de publicación | 2017 |
Fecha de depósito | 2024-07-10 |
Publicado en |
|
Resumen | Background/objectives/aims: The present study considered the effect of orthodontic friction in an evaluation of the relationship of
craniofacial pattern and surface micro-roughness of fixed appliances as determinants of ... Background/objectives/aims: The present study considered the effect of orthodontic friction in an evaluation of the relationship of craniofacial pattern and surface micro-roughness of fixed appliances as determinants of treatment response and time. Methods: Brachyfacial (BF; N = 17) and dolichofacial (DF; N = 18) patients treated by canine retraction using sliding mechanics, were identified. One archwire and one bracket per patient (those of the hemi-arch showing the fastest space closure of 4 mm) were subjected to confocal scanning microscopic analysis. Total treatment duration, sliding time, tooth movement rate, topographical surface average roughness (Ra ), root mean square roughness (RMS), surface-kurtosis (SK), and surface-skewness (SS) were recorded and compared between groups using the Mann-Whitney U test. Correlations between final micro-roughness and treatment time were investigated using Pearson’s coefficient within each craniofacial type (α = 0.05). The post-treatment appliance surfaces were examined by SEM. Results: BF patients recorded a significantly higher sliding time, lowest retraction rates, and greatest final Ra and RMS (p < 0.001). A comparison of total treatment time and final SK and SS values yielded no significant differences. Significant positive correlations between sliding time and final Ra were identified in both groups. Conclusions: Compared with DF subjects, BF patients registered higher friction between the orthodontic components, required longer sliding time, and showed lower retraction rates. |
Cita | Cadenas-Llano, M., Castillo-Oyague, R., Iglesias-Linares, A., Yáñez Vico, R.M., Solano Reina, J.E. y Torres-Lagares, D. (2017). Influence of facial types on sliding mechanics. Australasian orthodontic journal, 33 (1), 48-56. |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
Influence_of_facial_types_on_s ... | 312.5Kb | [PDF] | Ver/ | |