Evaluation of the long-term stability of micro-screws under different loading protocols: a systematic review
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.
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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