Effect of continuous versus intermittent orthodontic forces on root resorption: A microcomputed tomography study

Objectives: To compare the extent of root resorption and the amount of tooth movement between continuous orthodontic force and intermittent orthodontic force that was activated in a similar way to a 4-week orthodontic adjustment period. Materials and Methods: Twenty-five patients who required the extraction of upper first premolars were recruited in this study. A buccally directed continuous force of 150 g was applied to the upper first premolar on one side for 15 weeks. A buccally directed intermittent force (28 days on, 7 days off) of the same magnitude was applied to the contralateral first premolar. The teeth were extracted at the end of the experimental period and processed for volumetric evaluations of resorption craters. The degree of tooth movement and rotation were measured on the study models. Results: Continuous force application displayed significantly higher root resorption volume than the intermittent force application (P, .05), particularly on the buccal and lingual surfaces (P, .05) and the middle third of the root (P, .01). There was more tipping and rotational movement in the continuous force group. Conclusions: In a 4-week orthodontic adjustment period, intermittent force significantly reduced the amount of root resorption compared with continuous force. Although there was less degree of tooth movement with intermittent force, unwanted rotational movement was avoided. This is crucial in patients who are predisposed to orthodontically induced inflammatory root resorption, and the use of this intermittent regimen should be considered. © 2018 by The EH Angle Education and Research Foundation, Inc.

Yazar Ozkalayci N.
Karadeniz E.I.
Elekdag-Turk S.
Turk T.
Cheng L.L.
Darendeliler M.A.
Yayın Türü Article
Tek Biçim Adres https://hdl.handle.net/20.500.12628/5290
Tek Biçim Adres 10.2319/012518-68.1
Konu Başlıkları Continuous
Intermittent
Orthodontics
Root resorption
Koleksiyonlar Araştırma Çıktıları | WoS | Scopus | TR-Dizin | PubMed | SOBİAD
Scopus İndeksli Yayınlar Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu
Dergi Adı Angle Orthodontist
Dergi Cilt Bilgisi 88
Dergi Sayısı 6
Sayfalar 733 - 739
Yayın Yılı 2018
Eser Adı
[dc.title]
Effect of continuous versus intermittent orthodontic forces on root resorption: A microcomputed tomography study
Yazar
[dc.contributor.author]
Ozkalayci N.
Yazar
[dc.contributor.author]
Karadeniz E.I.
Yazar
[dc.contributor.author]
Elekdag-Turk S.
Yazar
[dc.contributor.author]
Turk T.
Yazar
[dc.contributor.author]
Cheng L.L.
Yazar
[dc.contributor.author]
Darendeliler M.A.
Yayın Yılı
[dc.date.issued]
2018
Yayıncı
[dc.publisher]
Allen Press Inc.
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
Objectives: To compare the extent of root resorption and the amount of tooth movement between continuous orthodontic force and intermittent orthodontic force that was activated in a similar way to a 4-week orthodontic adjustment period. Materials and Methods: Twenty-five patients who required the extraction of upper first premolars were recruited in this study. A buccally directed continuous force of 150 g was applied to the upper first premolar on one side for 15 weeks. A buccally directed intermittent force (28 days on, 7 days off) of the same magnitude was applied to the contralateral first premolar. The teeth were extracted at the end of the experimental period and processed for volumetric evaluations of resorption craters. The degree of tooth movement and rotation were measured on the study models. Results: Continuous force application displayed significantly higher root resorption volume than the intermittent force application (P, .05), particularly on the buccal and lingual surfaces (P, .05) and the middle third of the root (P, .01). There was more tipping and rotational movement in the continuous force group. Conclusions: In a 4-week orthodontic adjustment period, intermittent force significantly reduced the amount of root resorption compared with continuous force. Although there was less degree of tooth movement with intermittent force, unwanted rotational movement was avoided. This is crucial in patients who are predisposed to orthodontically induced inflammatory root resorption, and the use of this intermittent regimen should be considered. © 2018 by The EH Angle Education and Research Foundation, Inc.
Kayıt Giriş Tarihi
[dc.date.accessioned]
2019-12-23
Açık Erişim Tarihi
[dc.date.available]
2019-12-23
Yayın Dili
[dc.language.iso]
eng
Konu Başlıkları
[dc.subject]
Continuous
Konu Başlıkları
[dc.subject]
Intermittent
Konu Başlıkları
[dc.subject]
Orthodontics
Konu Başlıkları
[dc.subject]
Root resorption
Haklar
[dc.rights]
info:eu-repo/semantics/openAccess
ISSN
[dc.identifier.issn]
0003-3219
Sponsor YAYINCI
[dc.description.sponsorship]
Corresponding author: Dr M. Ali Darendeliler, Discipline of Orthodontics, Faculty of Dentistry, University of Sydney, Level 2, 2 Chalmers Street, Surry Hills NSW 2010 Australia (e-mail: ali.darendeliler@sydney.edu.au) Accepted: May 2018. Submitted: January 2018. Published Online: August 20, 2018 © 2018 by The EH Angle Education and Research Foundation, Inc.
İlk Sayfa Sayısı
[dc.identifier.startpage]
733
Son Sayfa Sayısı
[dc.identifier.endpage]
739
Dergi Adı
[dc.relation.journal]
Angle Orthodontist
Dergi Sayısı
[dc.identifier.issue]
6
Dergi Cilt Bilgisi
[dc.identifier.volume]
88
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.2319/012518-68.1
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/5290
Görüntülenme Sayısı ( Şehir )
Görüntülenme Sayısı ( Ülke )
Görüntülenme Sayısı ( Zaman Dağılımı )
Görüntülenme
4
09.12.2022 tarihinden bu yana
İndirme
1
09.12.2022 tarihinden bu yana
Son Erişim Tarihi
06 Eylül 2023 16:45
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intermittent resorption movement orthodontic continuous period rotational degree application premolar significantly applied directed buccally patients amount adjustment 4-week Education reduced Conclusions particularly tipping Research lingual buccal middle Foundation surfaces compared predisposed regimen inflammatory should considered
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