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- Title
SURFACE MODIFICATION AND MECHANICAL PROPERTIES OF ORTHODONTIC MICROIMPLANTS FOLLOWING SANDBLASTING AND AUTOCLAVE STERILIZATION.
- Authors
Izabella, Pop Silvia; Anamaria, Bud; Mariana, Pacurar; R., Chiorean; M., Dudescu; Cristina, Bratu Dana
- Abstract
Background: Reusing orthodontic mini-implants could reduce treatment cost and lead to improvement of orthodontic treatments. Different chemical and physical sterilization methods of mini-implants are available. The present study aimed to compare the surface morphology and mechanical properties (maximum insertion torque) of as-received and sandblasted and sterilized miniimplants. Material and methods: Forty micro-implants from two different manufacturers (Link from MIS and Yesanchor from OrlusTM) were used in the study. From each manufacturer the implants were divided in 2 groups: G1 (n=10) new, unused, G2 (n=10) mini-implants inserted in pig bone and removed, followed by sandblasting and autoclave sterilization. Scanning Electronic Microscopic and optical microscopic analyses of the head, transmucosal neck, threaded body, and tip were performed. Maximum insertion torque was recorded and subjected to statistical testing. Results: Maximum insertion torque for G2 Link mini-implants was 26,94 Ncm and 36,46 Ncm for G2 Yesanchor. No statistically significant maximum torque insertion values were recorded between G1 and G2 groups of the two types of mini-implants. Microscopic analysis showed surface manufacturing imperfections of G1 category, and abrasive mechanical stripping of the screw surface of the G2 category. Conclusions: Sandblasting and autoclave sterilization does not affect the maximum insertion torque of the mini-implants, but they modify their surface topography.
- Subjects
DENTAL implants; MECHANICAL behavior of materials; SAND blasting; AUTOCLAVES; ORTHODONTIC appliances; STERILIZATION (Disinfection)
- Publication
Acta Medica Marisiensis, 2016, Vol 62, p104
- ISSN
2068-3324
- Publication type
Article