Efficacy of Twin Arch Brackets in the Control of Orthodontic Tooth Movement
NCT ID: NCT05071599
Last Updated: 2021-10-22
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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UNKNOWN
NA
30 participants
INTERVENTIONAL
2021-11-01
2022-12-31
Brief Summary
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Detailed Description
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During the leveling and alignment stage, tooth movement is directly affected by many factors, such as interbracket distance, bracket width, archwire selection and the friction generated between the bracket and the archwire. It is critical that the force moment which generated by interaction between the bracket slot and the archwire to be transferred from the archwire to the malpositioned tooth.
While it is widely recognized that the geometric structure of the bracket, especially the slot width, determines the efficiency of the force moment, the interbracket span, on the other hand, remains another crucial factor affecting the effectiveness of tooth displacement. It has been established that a sufficient interbracket span enables the flexible archwire to activate its springiness caused by deflection. A wider bracket is favorable to develop an adequate force moment, but the subsequent decrease in the space between the brackets will reduce the effective length of the archwire segments between the supports. As a matter of fact, the efficiency of treatment mechanics is a major focus in modern orthodontics.The advancement of bracket design began with the vertically positioned slot in the ribbon arch appliance to the pure rectangular horizontal slot in the traditional standard edgewise to the modern preadjusted brackets in the straight wire technique, and to the current design of the self-ligating brackets system. It is interesting to note that despite the numerous bracket designs, one feature has remained unchanged: there is only one single horizontal slot on the facial surface of the bracket. In some design variations, such as the Tip- Edge Plus, In-Ovation and " R " brackets, an additional horizontal slot is enclosed within the bracket base and is not open to the labial surface, therefore only allowing for engagement of segmental auxiliary archwires. However some inventors design bracket system called "the twin wire appliance or twin arch wire appliance " which can fit two archwires simultaneously by incorporating two horizontal slots in the design of single brackets. In twin arch appliance design, the bracket width is doubled without decreasing the interbracket span.
The treatment technique to work with two arch wires simultaneously is not new. The idea behind the invention of twin arch appliance was to achieve a better control over orthodontics tooth movements. In the orthodontic literature a very little knowledge and research can be found concerning the use of Twin arch appliance in orthodontic treatment. In the 1930s attempts were made to develop a new treatment method with this concept. Spencer Atkinson was the pioneer, Spencer created a bracket with a vertical and a horizontal slot, positioned one on top of the other. Then in 2008 an experimental study for the efficiency of double slot brackets in correction of malposed teeth when placed in wax typodont was established. The study revealed that twin slot bracket doubles the rate of teeth alignment. The reason behind this phenomenon that the twin-slot bracket doubles the rate of alignment may be attributed to fact that the force applied on the tooth bonded with the twin-slot bracket is doubled and the rate of wax flow is likely to be proportional to load .
Because of the promising results obtained from the previous experimental study and the lack of clinical study results, it will be beneficial to study and compare clinically the effectiveness of twin arch appliance in control of orthodontic tooth movements as well as the comfort of patient during the initial leveling and alignment stage of treatment in relation to other conventional bracket systems.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
NONE
Study Groups
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Twin arch brackets
the malocclusion for this group will be treated using fixed appliance which utilize twin arch brackets system.
Twin Arch Brackets
Twin Arch Brackets characterized by double horizontal slots which make it capable to accept two arch wire at the same time which in turn can achieve a better control over orthodontic tooth movement
Conventional brackets
the malocclusion for this group will be treated using fixed appliance which utilize conventional "pre-adjusted edgewise "brackets system.
Twin Arch Brackets
Twin Arch Brackets characterized by double horizontal slots which make it capable to accept two arch wire at the same time which in turn can achieve a better control over orthodontic tooth movement
Interventions
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Twin Arch Brackets
Twin Arch Brackets characterized by double horizontal slots which make it capable to accept two arch wire at the same time which in turn can achieve a better control over orthodontic tooth movement
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
2. Full set of permanent teeth (the third molars are not considered).
3. Angle class I malocclusion with normal facial proportions.
4. Mild to moderate crowding in both arches that require treatment with fixed appliance using non extraction approach
5. No previous orthodontic or orthognathic surgery treatment.
6. Free from oral and general health problems that could interfere with orthodontic treatment..
7. All teeth should be caries-free.
Exclusion Criteria
2. History of serious medical problems or taking systemic medication which could affect orthodontic treatment.
3. History of serious dental problems (endodontic treatment, periodontal surgery, apicectomy, or any other dental problems) which could affect orthodontic treatment.
4. History of trauma, bruxism, or or parafunctional habits.
13 Years
18 Years
ALL
Yes
Sponsors
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Al-Azhar University
OTHER
Responsible Party
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Mohammed Basher Farhat
Dentist
Principal Investigators
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Raafat E G Mohamed, Asst Prof
Role: STUDY_DIRECTOR
Department of orthodontics, Faculty of Dental Medicine (Boys-Cairo), Al-Azhar University
Ahmed S Ammar, Lecturer
Role: STUDY_DIRECTOR
Department of Orthodontics, Faculty of Dental Medicine (Boys- Cairo), Al-Azhar University
Locations
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Al Azhar University
Cairo, Nasr City, Egypt
Countries
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Central Contacts
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References
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Gravina MA, Brunharo IH, Fraga MR, Artese F, Campos MJ, Vitral RW, Quintao CC. Clinical evaluation of dental alignment and leveling with three different types of orthodontic wires. Dental Press J Orthod. 2013 Nov-Dec;18(6):31-7. doi: 10.1590/s2176-94512013000600006.
Sifakakis I, Pandis N, Makou M, Eliades T, Katsaros C, Bourauel C. A comparative assessment of torque generated by lingual and conventional brackets. Eur J Orthod. 2013 Jun;35(3):375-80. doi: 10.1093/ejo/cjs029. Epub 2012 May 9.
Khattab TZ, Hajeer MY, Farah H, Al-Sabbagh R. Maxillary dental arch changes following the leveling and alignment stage with lingual and labial orthodontic appliances: a preliminary report of a randomized controlled trial. J Contemp Dent Pract. 2014 Sep 1;15(5):561-6. doi: 10.5005/jp-journals-10024-1579.
Liaw YC, Su YY, Lai YL, Lee SY. Stiffness and frictional resistance of a superelastic nickel-titanium orthodontic wire with low-stress hysteresis. Am J Orthod Dentofacial Orthop. 2007 May;131(5):578.e12-8. doi: 10.1016/j.ajodo.2006.08.015.
Shen G, Chen RJ, Hu Z, Qian YF. The effects of a newly designed twin-slot bracket on severely malpositioned teeth--a typodont experimental study. Eur J Orthod. 2008 Aug;30(4):401-6. doi: 10.1093/ejo/cjn011.
Miles PG, Weyant RJ, Rustveld L. A clinical trial of Damon 2 vs conventional twin brackets during initial alignment. Angle Orthod. 2006 May;76(3):480-5. doi: 10.1043/0003-3219(2006)076[0480:ACTODV]2.0.CO;2.
Yeh CL, Kusnoto B, Viana G, Evans CA, Drummond JL. In-vitro evaluation of frictional resistance between brackets with passive-ligation designs. Am J Orthod Dentofacial Orthop. 2007 Jun;131(6):704.e11-22. doi: 10.1016/j.ajodo.2006.09.041.
Rinchuse DJ, Rinchuse DJ, Kapur-Wadhwa R. Orthodontic appliance design. Am J Orthod Dentofacial Orthop. 2007 Jan;131(1):76-82. doi: 10.1016/j.ajodo.2005.04.039. No abstract available.
Parkhouse RC. Current products and practice: Tip-Edge Plus. J Orthod. 2007 Mar;34(1):59-68. doi: 10.1179/146531207225021933.
Miles P, Weyant R. Porcelain brackets during initial alignment: are self-ligating cosmetic brackets more efficient? Aust Orthod J. 2010 May;26(1):21-6.
Charan J, Biswas T. How to calculate sample size for different study designs in medical research? Indian J Psychol Med. 2013 Apr;35(2):121-6. doi: 10.4103/0253-7176.116232.
Little RM. The irregularity index: a quantitative score of mandibular anterior alignment. Am J Orthod. 1975 Nov;68(5):554-63. doi: 10.1016/0002-9416(75)90086-x.
GREENE JC, VERMILLION JR. THE SIMPLIFIED ORAL HYGIENE INDEX. J Am Dent Assoc. 1964 Jan;68:7-13. doi: 10.14219/jada.archive.1964.0034. No abstract available.
Related Links
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Clinical evaluation of the failure rates of metallic brackets
A COMPARISON STUDY OF BRACKET FAILURE RATE BETWEEN DIRECT AND INDIRECT BONDING TECHNIQUES
Other Identifiers
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Twin arch brackets
Identifier Type: -
Identifier Source: org_study_id