Valoración de la resistencia mecánica a fuerzas de tracción de los microimplantes utilizados como anclaje en el tratamiento ortodóncico

Abstract

The management of anchorage is very important in orthodontic treatment. The lack of cooperation makes the professional choose other treatments compromising, sometimes, the established aims. This evidence has induced the orthodontist to look for new anchorage methods without patient collaboration. The aims of this study were: evaluate and quantificate the mini-implants mechanic resistance to traction forces and compare this resistance with diameter and length, and evaluate if the resistance to traction was constant when the mini-implants were analyzed far the second time and valutare the superflcial behaviour about the blade of mini-implants with microscope . We analyzed the traction forces resistance of twelve mini-implants Jeil Medical corporation with the electromechanic machine ibertest model elib -5/W. The analysis was carried out by statistical analysis software (Spss 12.00) for the windows system observing that the mini-implantss with major diameter and length have better resistance. In the second analysis we observed that the traction resistance decreases considerablely in all groups with significance. The exception was the mini-implants with a majar diameter and length because the decrease is in minor proportion. This founds would be related with the blade superficial deformation.