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KJO Korean Journal of Orthodontics

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eISSN 2005-372X
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Korean J Orthod

Published online October 27, 2020

Copyright © The Korean Association of Orthodontists.

Effect of Micro-Osteoperforations on External Apical Root Resorption: A Randomized Controlled Trial

Azaitun Akma Shahrin (AAS)1 , Sarah Haniza Abdul Ghani (SHAG)2 , Noraina Hafizan Norman (NHN)3

1Doctor of Dental Surgery (DDS), Universiti Sains Malaysia (USM), Malaysia
Doctor of Clinical Dentistry in Orthodontics (DClinDent), University Teknologi MARA (UiTM), Malaysia
DDS (USM), DClinDent (Orthodontics)(UiTM)
Orthodontic Resident, Centre of Paediatric Dentistry and Orthodontic Studies, Universiti Teknologi MARA (UiTM), Jalan Hospital, 47000 Sungai Buloh, Selangor, Malaysia
Email: akmashahrin@gmail.com
https://orcid.org/0000-0002-6336-6435

2Bachelor of Dental Surgery (BDS), University of Malaya, Malaysia
Master of Medical Science (Orthodontics), University of Glasgow, Scotland, United Kingdom
BDS (UM), MDORCPS (Glasgow)
Orthodontist, Centre of Paediatric Dentistry and Orthodontic Studies, Universiti Teknologi MARA (UiTM), Jalan Hospital, 47000 Sungai Buloh, Selangor, Malaysia
Email: drsarahaniza@gmail.com

3Doctor of Dental Surgery (Distinction), Universiti Sains Malaysia (USM), Malaysia
Masters of Science in Clinical Orthodontics (Distinction), University of Manchester, United Kingdom
DDS (USM), MOrthRCS(England), M(Orth)RCPS(Glasgow)
Orthodontist, Centre of Paediatric Dentistry and Orthodontic Studies, Universiti Teknologi MARA (UiTM), Jalan Hospital, 47000 Sungai Buloh, Selangor, MalaysiaM
Email: noraina@uitm.edu.my
http://orcid.org/0000-0002-4071-1486

Correspondence to:Noraina Hafizan Norman
Head of Department
Centre of Paediatric Dentistry and Orthodontic Studies,
Faculty of Dentistry,
Universiti Teknologi MARA (UiTM),
Jalan Hospital,
47000 Sungai Buloh,
Selangor, Malaysia
Handphone No : +60124914707
Fax No : +603 6126 6458
Email : noraina@uitm.edu.my3

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objectives: This study aimed to investigate the effect of micro-osteoperforations (MOPs) on external apical root resorption (EARR) during the initial orthodontic alignment phase of maxillary anterior crowding.
Design: A parallel-group randomized controlled trial was conducted.
Methods: Thirty patients (25 females, 5 males: mean age, 22.66 years (± 3.27) presented with moderate crowding of the upper labial segment and had extraction based fixed-appliance type of treatment were recruited. They were randomly allocated to the adjunctive therapy of MOPs group (n=15) or control group with fixed appliances only (n=15). EARR was measured from long-cone periapical radiographs taken at the start and the sixth month of treatment. A correction factor for the enlargement difference was used to calculate EARR. Data were analyzed with descriptive statistics and repeated measures ANOVA.
Results: The mean root length of 180 teeth was measured and showed no statistically significant difference after six months of fixed appliance treatment with or without MOPs (p>0.05). Mean overall EARR measured in MOPs group was 0.07 mm (SD 0.39) and 0.17 mm (SD 0.58) in the control group. Overall grading revealed that 46.67% of the teeth had mild root resorption and only 6.11% of moderate root resorption.
Conclusion: Accelerating orthodontic tooth movement with adjunctive MOPs therapy during the alignment phase does not exacerbate EARR when compared to the control group.

Keywords: micro-osteoperforations (MOPs), external apical root resorption (EARR), orthodontic alignment, iatrogenic effect

Article

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Korean J Orthod

Published online October 27, 2020

Copyright © The Korean Association of Orthodontists.

Effect of Micro-Osteoperforations on External Apical Root Resorption: A Randomized Controlled Trial

Azaitun Akma Shahrin (AAS)1 , Sarah Haniza Abdul Ghani (SHAG)2 , Noraina Hafizan Norman (NHN)3

1Doctor of Dental Surgery (DDS), Universiti Sains Malaysia (USM), Malaysia
Doctor of Clinical Dentistry in Orthodontics (DClinDent), University Teknologi MARA (UiTM), Malaysia
DDS (USM), DClinDent (Orthodontics)(UiTM)
Orthodontic Resident, Centre of Paediatric Dentistry and Orthodontic Studies, Universiti Teknologi MARA (UiTM), Jalan Hospital, 47000 Sungai Buloh, Selangor, Malaysia
Email: akmashahrin@gmail.com
https://orcid.org/0000-0002-6336-6435

2Bachelor of Dental Surgery (BDS), University of Malaya, Malaysia
Master of Medical Science (Orthodontics), University of Glasgow, Scotland, United Kingdom
BDS (UM), MDORCPS (Glasgow)
Orthodontist, Centre of Paediatric Dentistry and Orthodontic Studies, Universiti Teknologi MARA (UiTM), Jalan Hospital, 47000 Sungai Buloh, Selangor, Malaysia
Email: drsarahaniza@gmail.com

3Doctor of Dental Surgery (Distinction), Universiti Sains Malaysia (USM), Malaysia
Masters of Science in Clinical Orthodontics (Distinction), University of Manchester, United Kingdom
DDS (USM), MOrthRCS(England), M(Orth)RCPS(Glasgow)
Orthodontist, Centre of Paediatric Dentistry and Orthodontic Studies, Universiti Teknologi MARA (UiTM), Jalan Hospital, 47000 Sungai Buloh, Selangor, MalaysiaM
Email: noraina@uitm.edu.my
http://orcid.org/0000-0002-4071-1486

Correspondence to:Noraina Hafizan Norman
Head of Department
Centre of Paediatric Dentistry and Orthodontic Studies,
Faculty of Dentistry,
Universiti Teknologi MARA (UiTM),
Jalan Hospital,
47000 Sungai Buloh,
Selangor, Malaysia
Handphone No : +60124914707
Fax No : +603 6126 6458
Email : noraina@uitm.edu.my3

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objectives: This study aimed to investigate the effect of micro-osteoperforations (MOPs) on external apical root resorption (EARR) during the initial orthodontic alignment phase of maxillary anterior crowding.
Design: A parallel-group randomized controlled trial was conducted.
Methods: Thirty patients (25 females, 5 males: mean age, 22.66 years (± 3.27) presented with moderate crowding of the upper labial segment and had extraction based fixed-appliance type of treatment were recruited. They were randomly allocated to the adjunctive therapy of MOPs group (n=15) or control group with fixed appliances only (n=15). EARR was measured from long-cone periapical radiographs taken at the start and the sixth month of treatment. A correction factor for the enlargement difference was used to calculate EARR. Data were analyzed with descriptive statistics and repeated measures ANOVA.
Results: The mean root length of 180 teeth was measured and showed no statistically significant difference after six months of fixed appliance treatment with or without MOPs (p>0.05). Mean overall EARR measured in MOPs group was 0.07 mm (SD 0.39) and 0.17 mm (SD 0.58) in the control group. Overall grading revealed that 46.67% of the teeth had mild root resorption and only 6.11% of moderate root resorption.
Conclusion: Accelerating orthodontic tooth movement with adjunctive MOPs therapy during the alignment phase does not exacerbate EARR when compared to the control group.

Keywords: micro-osteoperforations (MOPs), external apical root resorption (EARR), orthodontic alignment, iatrogenic effect