A CBCT assessment of bone density changes after accelerated orthodontic retraction of canine by microosteoperforations

Ahmed Ali Alfawazan; Abhigyan Manas; Yohan Verghese; Anuraj Singh Kochhar; Abdul Majeed AlMogbel; Smita Patil

doi:10.4103/jos.jos_123_21

A CBCT assessment of bone density changes after accelerated orthodontic retraction of canine by microosteoperforations

J Orthod Sci. 2022 May 4:11:26. doi: 10.4103/jos.jos_123_21. eCollection 2022.

Authors

Ahmed Ali Alfawazan¹, Abhigyan Manas², Yohan Verghese³, Anuraj Singh Kochhar⁴, Abdul Majeed AlMogbel⁵, Smita Patil⁶

Affiliations

¹ Department of Preventive Dentistry, College of Dentistry in Ar Rass, Qassim University, Al-Qassim Region, Saudi Arabia.
² Department of Dentistry, UP University of Medical Sciences Saifai, Utter Pradesh, India.
³ Department of Orthodontics, Consultant Orthodontist, Specialist A Orthodontist Ministry of Health and Prevention, Vergcorp Dentacare, Thrissur, Kerala, India.
⁴ Department of Orthodontics, Former Consultant Max Hospital, Gurugram, Haryana, India.
⁵ Department of Orthodontics and Paediatric Dentistry, College of Dentistry in Ar Rass, Qassim University, Al-Qassim Region, Saudi Arabia.
⁶ Department of Orthodontics and Dentofacial Orthopedics, Al Ameen Dental College, Vijayapura, Karnataka, India.

Abstract

Aim: The study was conducted to assess the changes in bone density before and after performing accelerated orthodontic maxillary canine retraction by microosteoperforations (MOPs).

Materials and methods: Forty patients (120 cone-beam computed tomography [CBCT] images) within the age group of 15 to 25 years undergoing fixed orthodontic treatment with bilateral maxillary first premolar extraction were enrolled in this study. The right and left sides of the maxillary jaw in the same patients were selected as experimental and control sites. To accelerate the tooth movement, MOPs were performed distal to the canine root in the extraction space under local anesthesia with a miniscrew. Thereafter, the maxillary canine retraction was initiated using a NiTi closed coil spring. The CBCT images were taken and evaluated at the following time intervals: 1 week before MOPs(T0);1 week after MOPs(T1);3 weeks after MOPs(T2).

Results: A statistically significant reduction in bone density was observed at the center of resistance of canine on the experimental site (after MOPs) at 1 week and 3 weeks (T0-T1 = 0.000,0.115; T1-T2 = 0.0025,0.0117), whereas a statistically non-significant difference was found 1 week before and 3 weeks later in the control group.

Conclusion: Accelerated orthodontics by MOPscan result in a substantial reduction in bone density during canine retraction, leading to an increase in the tooth movement rate, hence lowering the overall orthodontic treatment time.

Keywords: CBCT; Canine retraction; microosteoperforations; mini screw.