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Evaluation of the long-term stability of micro-screws under different loading protocols: a systematic review
College of StomatologyZhang, Jia-Nan; College of StomatologyLu, Hai-Ping; College of StomatologyBao, Xi-Chen; College of StomatologyShi, Yuan; College of StomatologyZhang, Meng-Han.
  • College of StomatologyZhang, Jia-Nan; Zhejiang Chinese Medical University. Department of Orthodontics. College of StomatologyZhang, Jia-Nan. Hangzhou. CN
  • College of StomatologyLu, Hai-Ping; Zhejiang Chinese Medical University. Department of Orthodontics. College of StomatologyLu, Hai-Ping. Hangzhou. CN
  • College of StomatologyBao, Xi-Chen; Zhejiang Chinese Medical University. Department of Orthodontics. College of StomatologyBao, Xi-Chen. Hangzhou. CN
  • College of StomatologyShi, Yuan; Zhejiang Chinese Medical University. Department of Orthodontics. College of StomatologyShi, Yuan. Hangzhou. CN
  • College of StomatologyZhang, Meng-Han; Zhejiang Chinese Medical University. Department of Orthodontics. College of StomatologyZhang, Meng-Han. Hangzhou. CN
Braz. oral res. (Online) ; 33: e046, 2019. tab, graf
Article in English | LILACS | ID: biblio-1011657
ABSTRACT
Abstract The aim of this systematic review was to investigate the association between the different factors of loading protocols and the long-term stability of micro-screws from biomechanical and histological viewpoints. Searches were performed on PubMed, Embase, Cochrane Library, Wanfang and CNKI databases for animal experiments comparing loading protocols and the long-term stability of micro-screws. Among 1011 detected papers, 16 studies met the eligibility criteria and were selected for analysis. Most studies showed medium methodological quality for evaluation of micro-screws' long-term stability. Five studies reported that loading would not destroy the long-term stability of micro-screws. Three studies indicated that low-intensity immediate loading or a 3-week minimal healing time was acceptable. Two studies reported that the loading magnitude was a controversial issue with regard to the micro-screws' long-term stability. Two studies suggested that counterclockwise loading could decrease the long-term stability of micro-screws. In conclusion, immediate loading below 100g force, healing time greater than 3 weeks, regular loading below 200g force and a clockwise direction of force supported the long-term stability of micro-screws. Further studies relating to the combination of varying loading conditions will be needed.
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Full text: Available Index: LILACS (Americas) Main subject: Bone Screws / Dental Implants / Dental Implantation / Orthodontic Anchorage Procedures Type of study: Prognostic study / Systematic reviews Limits: Animals Language: English Journal: Braz. oral res. (Online) Journal subject: Dentistry Year: 2019 Type: Article Affiliation country: China Institution/Affiliation country: Zhejiang Chinese Medical University/CN

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Full text: Available Index: LILACS (Americas) Main subject: Bone Screws / Dental Implants / Dental Implantation / Orthodontic Anchorage Procedures Type of study: Prognostic study / Systematic reviews Limits: Animals Language: English Journal: Braz. oral res. (Online) Journal subject: Dentistry Year: 2019 Type: Article Affiliation country: China Institution/Affiliation country: Zhejiang Chinese Medical University/CN