Long-term evaluation of factors affecting removal torque of microimplants

Abstract Background The current study aimed to evaluate factors affecting the long-term stability of microimplants using removal torque and the correlation between removal torque and clinical variables. Materials and methods This research evaluated 703 microimplants placed in 354 patients (mean age:...

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Autores principales:	Ho-Jin Kim, Hyo-Sang Park
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Microimplant Removal torque Long-term stability Placement method Dentistry RK1-715
Acceso en línea:	https://doaj.org/article/afcc3cd9f6a149cca823e2e84109e959
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spelling	oai:doaj.org-article:afcc3cd9f6a149cca823e2e84109e9592021-11-21T12:25:49ZLong-term evaluation of factors affecting removal torque of microimplants10.1186/s40510-021-00383-32196-1042https://doaj.org/article/afcc3cd9f6a149cca823e2e84109e9592021-11-01T00:00:00Zhttps://doi.org/10.1186/s40510-021-00383-3https://doaj.org/toc/2196-1042Abstract Background The current study aimed to evaluate factors affecting the long-term stability of microimplants using removal torque and the correlation between removal torque and clinical variables. Materials and methods This research evaluated 703 microimplants placed in 354 patients (mean age: 30.4 ± 12.1 years). The removal torque was evaluated according to various clinical variables including sex, age, placement site, microimplant size, and placement method (self-drilling versus pre-drilling). Pearson correlation and stepwise multiple linear regression analyses were performed to investigate different variables and their association with removal torque. Results The mean removal torque was significantly higher in the mandible (4.46 N cm) than in the maxilla (3.73 N cm). The values in the posterior teeth/retromolar areas were significantly higher than those in the anterior teeth area. There were no significant difference in terms of sex. Teenagers had a lower removal torque than older adults in the mandible, but not in the maxilla. Microimplants with a greater length and diameter, except for those with a greater diameter in the maxilla, was associated with a higher removal torque. Regardless of placement torque, the removal torque convergently reached approximately 4 N cm in both placement methods. The removal torque was significantly correlated with screw length in the self-drilling group and with diameter in the pre-drilling group. Conclusions Removal torque was related with placement site, age, placement method, and length and diameter of microimplants.Ho-Jin KimHyo-Sang ParkSpringerOpenarticleMicroimplantRemoval torqueLong-term stabilityPlacement methodDentistryRK1-715ENProgress in Orthodontics, Vol 22, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Microimplant Removal torque Long-term stability Placement method Dentistry RK1-715
spellingShingle	Microimplant Removal torque Long-term stability Placement method Dentistry RK1-715 Ho-Jin Kim Hyo-Sang Park Long-term evaluation of factors affecting removal torque of microimplants
description	Abstract Background The current study aimed to evaluate factors affecting the long-term stability of microimplants using removal torque and the correlation between removal torque and clinical variables. Materials and methods This research evaluated 703 microimplants placed in 354 patients (mean age: 30.4 ± 12.1 years). The removal torque was evaluated according to various clinical variables including sex, age, placement site, microimplant size, and placement method (self-drilling versus pre-drilling). Pearson correlation and stepwise multiple linear regression analyses were performed to investigate different variables and their association with removal torque. Results The mean removal torque was significantly higher in the mandible (4.46 N cm) than in the maxilla (3.73 N cm). The values in the posterior teeth/retromolar areas were significantly higher than those in the anterior teeth area. There were no significant difference in terms of sex. Teenagers had a lower removal torque than older adults in the mandible, but not in the maxilla. Microimplants with a greater length and diameter, except for those with a greater diameter in the maxilla, was associated with a higher removal torque. Regardless of placement torque, the removal torque convergently reached approximately 4 N cm in both placement methods. The removal torque was significantly correlated with screw length in the self-drilling group and with diameter in the pre-drilling group. Conclusions Removal torque was related with placement site, age, placement method, and length and diameter of microimplants.
format	article
author	Ho-Jin Kim Hyo-Sang Park
author_facet	Ho-Jin Kim Hyo-Sang Park
author_sort	Ho-Jin Kim
title	Long-term evaluation of factors affecting removal torque of microimplants
title_short	Long-term evaluation of factors affecting removal torque of microimplants
title_full	Long-term evaluation of factors affecting removal torque of microimplants
title_fullStr	Long-term evaluation of factors affecting removal torque of microimplants
title_full_unstemmed	Long-term evaluation of factors affecting removal torque of microimplants
title_sort	long-term evaluation of factors affecting removal torque of microimplants
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/afcc3cd9f6a149cca823e2e84109e959
work_keys_str_mv	AT hojinkim longtermevaluationoffactorsaffectingremovaltorqueofmicroimplants AT hyosangpark longtermevaluationoffactorsaffectingremovaltorqueofmicroimplants
_version_	1718419025464131584

Long-term evaluation of factors affecting removal torque of microimplants

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