Abstract
One hundred micro-implants from two different manufacturers were used in the study. From each manufacturer (Link from MISTM and Yesanchor from OrlusTM) the implants were divided in 5 groups: G0 (n=10) new, unused, G1 (n=10) mini-implants inserted in pig bone and removed, ultrasonically cleaned, followed by autoclave sterilization, G2 (n=10) same insertion protocol of group 2 followed by chemical cleaning with phosphoric gel and autoclave strerilization, G3 (n=10) same insertion protocol of group 1 followed by sandblasting and autoclave sterilization, G4 (n=10) same insertion protocol of group 2 followed by cleaning with distilled water and autoclave sterilization. Maximum insertion torque was recorded and subjected to statistical testing. Our results showed significant differences of the maximum insertion torques between groups of Link mini-implant (p=0.006), and no statistical differences of the maximum insertion torques of the Yesanchor implants (p=0.33). Significant differences (p[0.001) were also recorded between the groups of the two types of minii-mplants when compared. Our findings showed that brand-specific differences in maximum insertion torque exist between the two types of mini-implants.
Keywords: micro-implants; sterilizations; maximum insertion torque