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KJO Korean Journal of Orthodontics

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pISSN 2234-7518
eISSN 2005-372X
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Original Article

Korean J Orthod 2022; 52(6): 399-411   https://doi.org/10.4041/kjod22.095

First Published Date November 25, 2022, Publication Date November 25, 2022

Copyright © The Korean Association of Orthodontists.

Effectiveness of low-level laser therapy in facilitating maxillary expansion using bone-borne hyrax expander: A randomized clinical trial

Sara Hassan Abdelwassie , Mohammed Amgad Kaddah, Amr Emad El-Dakroury, Dalia El-Boghdady, Mohamed Abd El-Ghafour, Nouran Fouad Seifeldin

Department of Orthodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt

Correspondence to:Sara Hassan Abdelwassie.
Post Graduate Candidate, Department of Orthodontics, Faculty of Dentistry, Cairo University, 11 El-Saraya Street, Manial, Cairo 11515, Egypt.
Tel +201006999906-+966533888844 e-mail sara.a.966@gmail.com

Sara Hassan Abdelwassie's current affiliation: Saudi Commission for Health Specialties, Diplomatic Quarter, Riyadh, Kingdom of Saudi Arabia.

How to cite this article: Abdelwassie SH, Kaddah MA, El-Dakroury AE, El-Boghdady D, Abd El-Ghafour M, Seifeldin NF. Effectiveness of low-level laser therapy in facilitating maxillary expansion using bone-borne hyrax expander: A randomized clinical trial. Korean J Orthod 2022;52(6):399-411. https://doi.org/10.4041/kjod22.095

Received: April 15, 2022; Revised: June 14, 2022; Accepted: August 7, 2022

Abstract

Objective: The objective of this randomized clinical trial was to study the skeletal and dental effects of low-level laser therapy (LLLT) along with a miniscrew-assisted expander (Hyrax) after six months of retention. Methods: After sequence generation, concealed allocation, and implementation, 24 female patients were randomly divided (1:1) into two-groups: bone-borne rapid palatal expansion (BBE) without LLLT (n = 12) and BBE with LLLT (n = 12). Eligibility criteria included female patients aged 10–13 years old with bilateral posterior crossbites. Intraoral and extraoral photographs, cone-beam computed tomography images, and digital study models were obtained before expansion and six months after retention. The 7 mm Hyrax appliance was anchored to four palatal mini-screws, which were activated twice daily for 15 days, then locked and kept in place as a retainer. LLLT was performed in the laser group during expansion and retention, according to the guidelines provided. Results: The records of 24 patients were analyzed. According to the post-retention measurements, both groups showed a significant increase in nasal and maxillary widths and total facial height. In the laser group, the Sella-Nasion-Point A and Point A-Nasion-Point B angles and the interpremolar apical distance were significantly increased. Conclusions: Within the limitations of this study, the results suggest that the parameters and protocol of LLLT do not clinically affect the efficiency of BBE in prepubertal and pubertal patients.

Keywords: Expansion, Laser, Miniscrews

Article

Original Article

Korean J Orthod 2022; 52(6): 399-411   https://doi.org/10.4041/kjod22.095

First Published Date November 25, 2022, Publication Date November 25, 2022

Copyright © The Korean Association of Orthodontists.

Effectiveness of low-level laser therapy in facilitating maxillary expansion using bone-borne hyrax expander: A randomized clinical trial

Sara Hassan Abdelwassie , Mohammed Amgad Kaddah, Amr Emad El-Dakroury, Dalia El-Boghdady, Mohamed Abd El-Ghafour, Nouran Fouad Seifeldin

Department of Orthodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt

Correspondence to:Sara Hassan Abdelwassie.
Post Graduate Candidate, Department of Orthodontics, Faculty of Dentistry, Cairo University, 11 El-Saraya Street, Manial, Cairo 11515, Egypt.
Tel +201006999906-+966533888844 e-mail sara.a.966@gmail.com

Sara Hassan Abdelwassie's current affiliation: Saudi Commission for Health Specialties, Diplomatic Quarter, Riyadh, Kingdom of Saudi Arabia.

How to cite this article: Abdelwassie SH, Kaddah MA, El-Dakroury AE, El-Boghdady D, Abd El-Ghafour M, Seifeldin NF. Effectiveness of low-level laser therapy in facilitating maxillary expansion using bone-borne hyrax expander: A randomized clinical trial. Korean J Orthod 2022;52(6):399-411. https://doi.org/10.4041/kjod22.095

Received: April 15, 2022; Revised: June 14, 2022; Accepted: August 7, 2022

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

Objective: The objective of this randomized clinical trial was to study the skeletal and dental effects of low-level laser therapy (LLLT) along with a miniscrew-assisted expander (Hyrax) after six months of retention. Methods: After sequence generation, concealed allocation, and implementation, 24 female patients were randomly divided (1:1) into two-groups: bone-borne rapid palatal expansion (BBE) without LLLT (n = 12) and BBE with LLLT (n = 12). Eligibility criteria included female patients aged 10–13 years old with bilateral posterior crossbites. Intraoral and extraoral photographs, cone-beam computed tomography images, and digital study models were obtained before expansion and six months after retention. The 7 mm Hyrax appliance was anchored to four palatal mini-screws, which were activated twice daily for 15 days, then locked and kept in place as a retainer. LLLT was performed in the laser group during expansion and retention, according to the guidelines provided. Results: The records of 24 patients were analyzed. According to the post-retention measurements, both groups showed a significant increase in nasal and maxillary widths and total facial height. In the laser group, the Sella-Nasion-Point A and Point A-Nasion-Point B angles and the interpremolar apical distance were significantly increased. Conclusions: Within the limitations of this study, the results suggest that the parameters and protocol of LLLT do not clinically affect the efficiency of BBE in prepubertal and pubertal patients.

Keywords: Expansion, Laser, Miniscrews