The Use of Corticotomy for Upper Incisors Retraction
Evaluation of Treatment Outcomes of Corticotomy-accelerated Upper Incisors' Retraction: A Randomized Controlled Trial
調査の概要
詳細な説明
In the last three decades, the number of adult patients seeking short orthodontic treatment time has apparently increased as the conventional orthodontic treatment usually lasts for 20-24 months. Furthermore, orthodontic treatment is often associated with root resorption, bone degradation and caries development. Patients nowadays desire to end the orthodontic treatment as soon as possible due to phsycosocial reasons and to get the goals of the treatment without affecting their social life .
So many tooth movement accelerating methods have been proposed. However, the surgical approached are considered the most effective and promising methods in accelerating tooth movement. The current research aims to evaluate the efficacy of the a new proposed surgical method compared to the conventional method in upper incisors' retraction.
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
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Damascus、シリア・アラブ共和国、DM20AM18
- Department of Orthodontics, University of Damascus Dental School
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Adult patients 15 to 27 years , with permanent dentition , without hypodontia .
- Overjet less than 10 mm
- Normal or increased growth pattern (Diagnosed by Y-axis angle)
- Mild to moderate crowding (Less than 3 mm)
- After canines retraction , at least 3 mm space should be available distal the lateral incisors
- Midline deviation shouldn't be more than 3 mm
Exclusion Criteria:
- Medically contraindicated patients to oral surgery .
- Existence of general health issue that affect orthodontic teeth movement
- Previous orthodontic treatment
- Mixed dentition
- Hypodontia (Except third molars)
- Bad oral hygiene
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:独身
武器と介入
参加者グループ / アーム |
介入・治療 |
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実験的:Corticotomy-assisted Retraction
Corticotomy-assisted retraction will be performed in order to help in accelerating upper incisors' retraction
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Using a tunneling technique, the researcher will perform the intervention in the alveolar bone surrounding the upper incisors before retraction.
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介入なし:Conventional Retraction
Conventional retraction will be used in this group of patients by sliding mechanisms
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この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
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Rate of retraction
時間枠:This will be measured at the completion of the retraction procedure, and is expected to take 2 months in the experimental group and four months in the control group.
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The distance that the incisors moved during retraction divided by the time required to retract the four upper incisors to their ideal positions.
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This will be measured at the completion of the retraction procedure, and is expected to take 2 months in the experimental group and four months in the control group.
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Time required for retraction
時間枠:This will be measured at the completion of the retraction procedure, and is expected to be within 2 months in the accelerated group and 4 months in the control group.
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The time required from the beginning of incisors' retraction till the the completion of this procedure.
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This will be measured at the completion of the retraction procedure, and is expected to be within 2 months in the accelerated group and 4 months in the control group.
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Change in the axial inclination of upper incisors
時間枠:A radiograph will be taken at T1: one day before upper incisors' retraction and T2: one day after the completion of upper incisors' retraction. Completion of upper incisors' retraction is expected to be within 2 months in the accelerated group and 4 mo
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the angle between the long axis of the upper incisor and a reference plane drawn on a later cephalometric radiograph teken at two assessment times.
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A radiograph will be taken at T1: one day before upper incisors' retraction and T2: one day after the completion of upper incisors' retraction. Completion of upper incisors' retraction is expected to be within 2 months in the accelerated group and 4 mo
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Anchorage loss
時間枠:This will be measured one day following the completion of retraction of the upper four incisors using plaster study models and is expected to be within 2 months in the accelerated group and 4 months in the control group
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the amount of anchorage loss (in mm), which is the distance from a perpendicular line to the midpalatal suture and extends between central fossa of both upper first molars to the third palatal rugae .
These measurements are made on plaster study models.
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This will be measured one day following the completion of retraction of the upper four incisors using plaster study models and is expected to be within 2 months in the accelerated group and 4 months in the control group
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Root resorption
時間枠:An panoramic image will be taken at T1: one day before the commencement of incisor retraction and T2: one day following the completion of retraction and is expected to be within 2 months in the accelerated group and 4 months in the control group
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This variable is related to the amount of incisor root resorption after treatment in both groups.
This is measured on a panoramic image.
The amount of root resorption = the length of an incisor after retraction subtracted from the length of an incisor before retraction.
Two radiogrpahs are needed.
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An panoramic image will be taken at T1: one day before the commencement of incisor retraction and T2: one day following the completion of retraction and is expected to be within 2 months in the accelerated group and 4 months in the control group
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協力者と研究者
スポンサー
捜査官
- 主任研究者:Ghaith Al Imam, DDS、MSc student in Orthodontics, University of Damascus Dental School, Damascus, Syria
出版物と役立つリンク
一般刊行物
- Aboul-Ela SM, El-Beialy AR, El-Sayed KM, Selim EM, El-Mangoury NH, Mostafa YA. Miniscrew implant-supported maxillary canine retraction with and without corticotomy-facilitated orthodontics. Am J Orthod Dentofacial Orthop. 2011 Feb;139(2):252-9. doi: 10.1016/j.ajodo.2009.04.028.
- Bhattacharya P, Bhattacharya H, Anjum A, Bhandari R, Agarwal DK, Gupta A, Ansar J. Assessment of Corticotomy Facilitated Tooth Movement and Changes in Alveolar Bone Thickness - A CT Scan Study. J Clin Diagn Res. 2014 Oct;8(10):ZC26-30. doi: 10.7860/JCDR/2014/9448.4954. Epub 2014 Oct 20.
- Al-Naoum F, Hajeer MY, Al-Jundi A. Does alveolar corticotomy accelerate orthodontic tooth movement when retracting upper canines? A split-mouth design randomized controlled trial. J Oral Maxillofac Surg. 2014 Oct;72(10):1880-9. doi: 10.1016/j.joms.2014.05.003. Epub 2014 May 14.
- Choo H, Heo HA, Yoon HJ, Chung KR, Kim SH. Treatment outcome analysis of speedy surgical orthodontics for adults with maxillary protrusion. Am J Orthod Dentofacial Orthop. 2011 Dec;140(6):e251-62. doi: 10.1016/j.ajodo.2011.06.029.
- Chung KR, Kim SH, Lee BS. Speedy surgical-orthodontic treatment with temporary anchorage devices as an alternative to orthognathic surgery. Am J Orthod Dentofacial Orthop. 2009 Jun;135(6):787-98. doi: 10.1016/j.ajodo.2007.03.036.
- Dincer M, Gulsen A, Turk T. The retraction of upper incisors with the PG retraction system. Eur J Orthod. 2000 Feb;22(1):33-41. doi: 10.1093/ejo/22.1.33.
- KOLE H. Surgical operations on the alveolar ridge to correct occlusal abnormalities. Oral Surg Oral Med Oral Pathol. 1959 May;12(5):515-29 concl. doi: 10.1016/0030-4220(59)90153-7. No abstract available.
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