Abstract:
Objectives: The aim of this study is to evaluate the influence of autoclaving on
maximal twist into new, autoclaved mini - implants after insertion in the oral and
subjected to orthodontic forces cavity.
Methodology: In this study 34 self-drilling mini-implants titanium ( Ti- 6Al -4V ) of the
same brand were used: Morelli registration MS / ANVISA - ( 10,396,830,041 ) broken
to measure 1.5 mm in diameter, length transmucosal 8.0 mm and 2.0 mm. Of these,
24 mini - implants (group 1) were inserted into the oral cavity, for various functions in
orthodontic therapy, and after approximately four (4) months were removed and
autoclaved. Ten new mini - implants served as control group (group 2). For the
mechanical test twisting mini - implant (Sorocaba - SP) Dental Morelli Company
released the Universal Testing Machine (EMIC), coupled with a device to torsion test.
Mini-implants (inserted and autoclaved and control group) were subjected to
mechanical torsion testing to evaluate resistance to torque.
Results: Mini-implants in group 1 (used and autoclaved) and mini - implants in group
2 (new) showed no statistically significant difference (p > 0.05) in the test of
resistance to torsion test.
Conclusion: It can be concluded that autoclaving of mini - implants after use in
different orthodontic mechanics does not change its values of resistance to twisting,
keeping within the limits recommended by the manufacturer for clinical use in
orthodontics.
