대한치과교정학회지 (The korean journal of orthodontics)

  • 제52권6호
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  • Pages.412-419
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  • 2022
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  • 2234-7518(pISSN)
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  • 2005-372X(eISSN)
대한치과교정학회 (The Korean Association Of Orthodontists)
권호 표지
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Enhancement of bioactivity and osseointegration in Ti-6Al-4V orthodontic mini-screws coated with calcium phosphate on the TiO2 nanotube layer

  • Byeon, Seon-Mi (Department of Dental Biomaterials, Institute of Biodegradable Materials, School of Dentistry, Jeonbuk National University) ;
  • Kim, Hye-Ji (Department of Dental Biomaterials, Institute of Biodegradable Materials, School of Dentistry, Jeonbuk National University) ;
  • Lee, Min-Ho (Department of Dental Biomaterials, Institute of Biodegradable Materials, School of Dentistry, Jeonbuk National University) ;
  • Bae, Tae-Sung (Department of Dental Biomaterials, Institute of Biodegradable Materials, School of Dentistry, Jeonbuk National University)
  • 투고 : 2022.05.18
  • 심사 : 2022.08.17
  • 발행 : 2022.11.25
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초록

Objective: This study evaluated the effect of cyclic pre-calcification treatment on the improvement of bioactivity and osseointegration of Ti-6Al-4V mini-screws. Methods: The experimental groups were: an untreated group (UT), an anodized and heat-treated group (AH), and an anodized treatment followed by cyclic pre-calcification treatment group (ASPH). A bioactive material with calcium phosphate was coated on the mini-screws, and its effects on bioactivity and osseointegration were evaluated in in vitro and in vivo tests of following implantation in the rat tibia. Results: As a result of immersing the ASPH group in simulated body fluid for 2 days, protrusions appearing in the initial stage of hydroxyapatite precipitation were observed. On the 3rd day, the protrusions became denser, other protrusions overlapped and grew on it, and the calcium and phosphorus concentrations increased. The removal torque values increased significantly in the following order: UT group (2.08 ± 0.67 N·cm), AH group (4.10 ± 0.72 N·cm), and ASPH group (6.58 ± 0.66 N·cm) with the ASPH group showing the highest value (p < 0.05). In the ASPH group, new bone was observed that was connected to the threads, and it was confirmed that a bony bridge connected to the adjacent bone was formed. Conclusions: In conclusion, it was found that the surface treatment method used in the ASPH group improved the bioactivity and osseointegration of Ti-6Al-4V orthodontic mini-screws.

키워드

과제정보

This study has reconstructed the data of Hye-Ji Kim Master's thesis submitted in 2021 (title: "Effects of cyclic pre-calcification treatment on bioactivity of Ti-6Al-4V alloy miniscrews").

참고문헌

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