NCT04999150

Comparison of Corticotomy and Micro-Osteoperforation During Canine Retraction

A Split-Mouth Randomized Clinical Trial for the Comparison of Corticotomy and Micro-Osteoperforations During Canine Retraction: A Pilot Study

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 13 (actual)
• Sponsor: University of Puerto Rico · Academic / Other
• Sex: All
• Age: 12 Years – 45 Years
• Healthy volunteers: Accepted

Summary

Corticotomy and micro-osteoperforation (MOP) have been proven to accelerate tooth movement and shorten orthodontic treatment time, compared to conventional treatment. MOP is less invasive; however, it is unclear whether it is as effective as a corticotomy. The purpose of this study was to compare the maxillary canine retraction achieved by these techniques.

Detailed description

Thirteen patients (5 females, 8 males; mean age, 18.07±6.74 years) with healthy permanent dentition requiring the extraction of maxillary first premolars were included in a split-mouth randomized clinical trial. Subjects with previous orthodontic or endodontic treatment of canines were excluded. At least 3 months post-extraction, MOPs, and corticotomies were performed distal to the canines. Mini-screws with closed-coil springs (150g) were used for canine retraction. Dental casts were attained at baseline (T0) and 3 months post-intervention (T1). Calibrated examiners measured the distances from the canine to the second premolar on both sides. A Signed-rank sum test was used to compare canine retraction achieved in 3 months (T0-T1) in two sides

Conditions

• Malocclusion, Class I/II

Interventions

Type	Name	Description
PROCEDURE	Micro-Osteoperforations	MOPs were performed with a stainless-steel manual drill tip that had 1.6mm diameter with an adjustable depth set to 5mm (Excellerator® RT; Propel Orthodontics, Milpitas, CA). Six perforations were made along 2 parallel vertical lines (each line with 3 holes spaced \~2mm apart) distal to the canine and perpendicular to the buccal cortical bone. The mini-screws were placed. A NiTi closed-coil spring was placed and secured with a 0.014"SS ligature wire at the canine and mini-screw. A Dontrix gauge was used to measure the force (150g)
PROCEDURE	Corticotomy	A full-thickness labial mucoperiosteal flap was reflected. Two vertical corticotomies (1 mesial and 1 distal to the canine) were performed. The cortical bone was cut 2 to 3 mm below the alveolar crest towards the apex, until bone marrow was exposed. Cortical-cancellous bone grafts (0.5cc; PuraGraft, Kingwood, TX) were placed at the corticotomy sites. The mini-screws were placed. A nickel-titanium (NiTi) closed-coil spring was placed and secured with a 0.014"SS ligature wire at the canine and mini-screw. A Dontrix gauge (Orthopli Corp., Philadelphia, PA) was used to measure the force (150g)

Timeline

• Start date: 2018-10-02
• Primary completion: 2019-07-11
• Completion: 2020-09-26
• First posted: 2021-08-10
• Last updated: 2021-08-17

Locations

1 site across 1 country: Puerto Rico