Dental Changes Following the Traction of Impacted Maxillary Canines
NCT ID: NCT07294378
Last Updated: 2025-12-29
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
44 participants
INTERVENTIONAL
2023-03-02
2025-01-19
Brief Summary
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Detailed Description
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The most important causes of palatally impaction of upper canines are dental arch length deficiency, over-retained primary teeth, and trauma during the canine formation stage. One local mechanical cause is a decrease in the width of the upper dental arch. McConnell et al. reported that patients with upper impacted canines had a reduction in dental arch width, especially in the anterior region. On the other hand, unilateral or bilateral upper canine impaction can affect upper dental arch width and alter smile symmetry.
The impaction of the upper canine is also considered as one of the causes that lead to a lack of transverse development of the maxillary dental arch, especially the inter-premolar width. This is supported by the functional matrix theory, which considers that the presence of the organ stimulates bone growth. Thus, the natural eruption of the canine stimulates the normal transverse growth of the dental arch.
Many treatment strategies were used to treat impacted canine cases, but orthodontic traction after surgical exposure was the most commonly recommended method in the literature, given the great aesthetic and functional value of the upper canines. Two main surgical methods are used for this purpose: the open and closed surgical approaches.
Several mechanical means have been used to obtain the traction force. However, choosing the appropriate mechanical method that produces the least undesirable effects on adjacent teeth was a challenge for the clinical practitioner.
Many factors could result in unwanted changes in the spatial position of the adjacent teeth, such as the use of an open coil spring, direct reliance on these teeth to tract the impacted canine, the type of baseline orthodontic archwire used, and the type of orthodontic anchorage means. These side effects on adjacent teeth can be minimized by using techniques such as the segmented archwire technique and temporary anchorage devices (TADs).
Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
SINGLE
Study Groups
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Accelerated canine traction group
Perforations of the bone surrounding the impacted canine will be conducted at the time of canine exposure. Two months later, another flapless corticotomy procedure will be performed during the withdrawal of the impacted canine.
Corticotomy
During the surgical exposure phase in the acceleration group, the cortical bone will be perforated around the exposed canine crown (6-8 holes) wherever possible-this procedure aims to accelerate the withdrawal movement of the impacted canine. A 1 mm round bur will be used to create circular holes (1 mm in diameter, 1-2 mm in depth, and spaced about 1.5 mm apart). After two months of the surgical exposure, the second acceleration procedure will be performed. Two or three vertical incisions (8 mm height) will be made using a surgical scalpel at the buccal side of the impaction area. The cortical cuts (2-3 mm in depth, 1 mm in width, and spaced about 2 mm apart) will be performed using a flapless piezosurgery technique along the vertical lines.
Conventional canine traction
The canines will be withdrawn to the dental arch using the conventionnal method without subjecitng the patient to any additional surgical intervention.
Conventional traction
The canines will be withdrawn using conventional methods without any surgical acceleration.
Interventions
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Corticotomy
During the surgical exposure phase in the acceleration group, the cortical bone will be perforated around the exposed canine crown (6-8 holes) wherever possible-this procedure aims to accelerate the withdrawal movement of the impacted canine. A 1 mm round bur will be used to create circular holes (1 mm in diameter, 1-2 mm in depth, and spaced about 1.5 mm apart). After two months of the surgical exposure, the second acceleration procedure will be performed. Two or three vertical incisions (8 mm height) will be made using a surgical scalpel at the buccal side of the impaction area. The cortical cuts (2-3 mm in depth, 1 mm in width, and spaced about 2 mm apart) will be performed using a flapless piezosurgery technique along the vertical lines.
Conventional traction
The canines will be withdrawn using conventional methods without any surgical acceleration.
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
2. unilaterally palatally or mid-alveolar upper impacted canine
3. patients who have never received orthodontic treatment previously
4. mild crowding of the maxillary arch (less than 4 mm) and class I first molars relation
Exclusion Criteria
2. patients who have a contraindication to perform oral surgery under local anesthesia (social, psychological, mor edical)
3. more than 45-degree angle between the longitudinal axis of the impacted canines and the facial midline
4. bad oral health
18 Years
28 Years
ALL
No
Sponsors
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Damascus University
OTHER
Responsible Party
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Principal Investigators
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Mahran Raheel Mousa, DDS, MSc, PhD
Role: PRINCIPAL_INVESTIGATOR
Department of Orthodontics, Faculty of Dentistry, Al-Hawash Private University, Homs, Syria
Mohammad Younis Hajeer, DDS, MSc, PhD
Role: STUDY_DIRECTOR
Department of Orthodontics, Faculty of Dentistry, Damascus University
Omar Ahmad Heshmeh, DDS, MSc, PhD
Role: STUDY_DIRECTOR
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Damascus University
Locations
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Orthodontics Department, Faculty of Dentistry
Damascus, Rif-dimashq Governorate, Syria
Countries
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References
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Fischer TJ. Orthodontic treatment acceleration with corticotomy-assisted exposure of palatally impacted canines. Angle Orthod. 2007 May;77(3):417-20. doi: 10.2319/0003-3219(2007)077[0417:OTAWCE]2.0.CO;2.
Alyafrusee ES, Zheng B, Almashraqi AA, Almaqrami BS, Yang X, Xu H, Alhammadi MS, Liu Y. Three-dimensional dentoalveolar characteristics of a labially impacted dilacerated maxillary central incisor using cone-beam computed tomography. Sci Rep. 2025 Jul 9;15(1):24669. doi: 10.1038/s41598-025-10043-9.
Hocevar M, Ovsenik M, Golez A. Position of Maxillary Lateral Incisor and First Premolar in Impaction of Maxillary Canines: A Controlled Clinical CBCT and 3D Study Model Analysis. Dent J (Basel). 2025 Oct 27;13(11):497. doi: 10.3390/dj13110497.
Mousa MR, Hajeer MY, Burhan AS, Heshmeh O. Adult periodontal comparison after treatment of palatally impacted canines aligned by conventional or accelerated minimally-invasive corticotomy-assisted orthodontic traction: A randomized controlled trial. Int Orthod. 2023 Sep;21(3):100785. doi: 10.1016/j.ortho.2023.100785. Epub 2023 Jun 15.
Mousa MR, Hajeer MY, Burhan AS, Heshmeh O, Alam MK. The effectiveness of minimally-invasive corticotomy-assisted orthodontic treatment of palatally impacted canines compared to the traditional traction method in terms of treatment duration, velocity of traction movement and the associated dentoalveolar changes: A randomized controlled trial. F1000Res. 2023 Jun 19;12:699. doi: 10.12688/f1000research.135338.1. eCollection 2023.
Other Identifiers
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UDDS-2025-Ortho-11
Identifier Type: -
Identifier Source: org_study_id