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14 Patients with mild to moderate crowding and spacing will be selected according to inclusion criteria.
Treatment planning will be done on Maestro® software. An impression will be taken and scanned by an extra-oral scanner. The models will be 3D printed and aligner trays will be fabricated to be delivered on biweekly basis to be worn 16 hours per day for one group and 22 hours for the other group. Superimposition of the achieved clinical model over the predicted model will be done. Linear and angular measurements will be calculated for each tooth.
Clear removable retainers could be related to clear aligners. Wearing time of retainers has been suggested that it could be changed from full time to part-time during the night only. A similar approach could be done to determine the effect of wearing time of clear aligners on treatment outcome. The standard duration per day for wearing the appliance is 22 hours. However, is part-time wearing (16 hours) would have the same effect? Therefore, a randomized clinical trial is needed to compare the effect of partial wearing of the aligner versus full time. Moreover, studying the predictability and accuracy of treatment using Maestro software.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| part-time wear | Active Comparator | Patients will be instructed to wear the aligner for 16 hours per day, then the aligner going to be changed to the next step according to its numerical order in the software |
|
| Full-time wear | Active Comparator | Patients will be instructed to wear the aligner for 22 hours per day, then the aligner going to be changed to the next step according to its numerical order in the software |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| clear aligner treatment for orthodontics patients | Device | patient are instructed to wear aligners |
|
| Measure | Description | Time Frame |
|---|---|---|
| Linear Movement Discrepancies Between Digital Software Models and Clinical Models | Translation movements (mm) were compared for each tooth between predicted models on Software predicted models and actual clinical models for the study groups | an average of 1 year |
| Angular Movement Discrepancies Between Digital Software Models and Clinical Models | Translation movements (Degrees) were compared for each tooth between predicted models on Software predicted models and actual clinical models for the study groups | an average of 1 year |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Hala Mounir, Prof | Future University in Egypt | Study Chair |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Future University in Egypt | Cairo | New Caro | 11865 | Egypt |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 25439196 | Background | Nahoum HI. Forces and moments generated by removable thermoplastic aligners. Am J Orthod Dentofacial Orthop. 2014 Nov;146(5):545-6. doi: 10.1016/j.ajodo.2014.08.006. Epub 2014 Oct 28. No abstract available. | |
| 16168325 | Background | Djeu G, Shelton C, Maganzini A. Outcome assessment of Invisalign and traditional orthodontic treatment compared with the American Board of Orthodontics objective grading system. Am J Orthod Dentofacial Orthop. 2005 Sep;128(3):292-8; discussion 298. doi: 10.1016/j.ajodo.2005.06.002. |
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| ID | Type | URL | Comment |
|---|---|---|---|
| Study Protocol | View IPD |
The trial results will be available to the participants, health care professionals and the public by publication of the study in high quality national and international journals. The principal investigator will present a copy of the thesis at the Faculty of Oral and Dental Medicine, Future University in Egypt library and will distribute additional copies among the main universities in Egypt.
Data will be available after publication, indefinitely
Professors of other institutions will have access to the data if required via email
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| ID | Term |
|---|---|
| D008311 | Malocclusion, Angle Class I |
| ID | Term |
|---|---|
| D008310 | Malocclusion |
| D014076 | Tooth Diseases |
| D009057 | Stomatognathic Diseases |
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A randomized controlled clinical trial of 2 parallel groups with an allocation ratio of 1:1
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| 30264270 | Background | Papadimitriou A, Mousoulea S, Gkantidis N, Kloukos D. Clinical effectiveness of Invisalign(R) orthodontic treatment: a systematic review. Prog Orthod. 2018 Sep 28;19(1):37. doi: 10.1186/s40510-018-0235-z. |
| 21677105 | Background | Melsen B. Northcroft lecture: how has the spectrum of orthodontics changed over the past decades? J Orthod. 2011 Jun;38(2):134-43; quiz 145. doi: 10.1179/14653121141362. |
| 21803257 | Background | Pratt MC, Kluemper GT, Lindstrom AF. Patient compliance with orthodontic retainers in the postretention phase. Am J Orthod Dentofacial Orthop. 2011 Aug;140(2):196-201. doi: 10.1016/j.ajodo.2010.02.035. |
| 21055599 | Background | Kacer KA, Valiathan M, Narendran S, Hans MG. Retainer wear and compliance in the first 2 years after active orthodontic treatment. Am J Orthod Dentofacial Orthop. 2010 Nov;138(5):592-8. doi: 10.1016/j.ajodo.2008.12.027. |
| 30826046 | Background | Jacox LA, Mihas P, Cho C, Lin FC, Ko CC. Understanding technology adoption by orthodontists: A qualitative study. Am J Orthod Dentofacial Orthop. 2019 Mar;155(3):432-442. doi: 10.1016/j.ajodo.2018.08.018. |
| 21261488 | Background | Alford TJ, Roberts WE, Hartsfield JK Jr, Eckert GJ, Snyder RJ. Clinical outcomes for patients finished with the SureSmile method compared with conventional fixed orthodontic therapy. Angle Orthod. 2011 May;81(3):383-8. doi: 10.2319/071810-413.1. Epub 2011 Jan 24. |
| 26672713 | Background | Brown MW, Koroluk L, Ko CC, Zhang K, Chen M, Nguyen T. Effectiveness and efficiency of a CAD/CAM orthodontic bracket system. Am J Orthod Dentofacial Orthop. 2015 Dec;148(6):1067-74. doi: 10.1016/j.ajodo.2015.07.029. |
| 19121497 | Background | Kravitz ND, Kusnoto B, BeGole E, Obrez A, Agran B. How well does Invisalign work? A prospective clinical study evaluating the efficacy of tooth movement with Invisalign. Am J Orthod Dentofacial Orthop. 2009 Jan;135(1):27-35. doi: 10.1016/j.ajodo.2007.05.018. |
| 26629473 | Background | Zhang XJ, He L, Guo HM, Tian J, Bai YX, Li S. Integrated three-dimensional digital assessment of accuracy of anterior tooth movement using clear aligners. Korean J Orthod. 2015 Nov;45(6):275-81. doi: 10.4041/kjod.2015.45.6.275. Epub 2015 Nov 20. |
| 25372019 | Background | Buschang PH, Ross M, Shaw SG, Crosby D, Campbell PM. Predicted and actual end-of-treatment occlusion produced with aligner therapy. Angle Orthod. 2015 Sep;85(5):723-7. doi: 10.2319/043014-311.1. Epub 2014 Nov 5. |
| 28297094 | Background | Weir T. Clear aligners in orthodontic treatment. Aust Dent J. 2017 Mar;62 Suppl 1:58-62. doi: 10.1111/adj.12480. |
| 28686090 | Background | Grunheid T, Loh C, Larson BE. How accurate is Invisalign in nonextraction cases? Are predicted tooth positions achieved? Angle Orthod. 2017 Nov;87(6):809-815. doi: 10.2319/022717-147.1. Epub 2017 Jul 7. |
| 25412265 | Background | Rossini G, Parrini S, Castroflorio T, Deregibus A, Debernardi CL. Efficacy of clear aligners in controlling orthodontic tooth movement: a systematic review. Angle Orthod. 2015 Sep;85(5):881-9. doi: 10.2319/061614-436.1. Epub 2014 Nov 20. |
| 24923279 | Background | Simon M, Keilig L, Schwarze J, Jung BA, Bourauel C. Treatment outcome and efficacy of an aligner technique--regarding incisor torque, premolar derotation and molar distalization. BMC Oral Health. 2014 Jun 11;14:68. doi: 10.1186/1472-6831-14-68. |
| 29957318 | Background | Charalampakis O, Iliadi A, Ueno H, Oliver DR, Kim KB. Accuracy of clear aligners: A retrospective study of patients who needed refinement. Am J Orthod Dentofacial Orthop. 2018 Jul;154(1):47-54. doi: 10.1016/j.ajodo.2017.11.028. |
| 32110468 | Background | Izhar A, Singh G, Goyal V, Singh R, Gupta N, Pahuja P. Comparative Assessment of Clinical and Predicted Treatment Outcomes of Clear Aligner Treatment: An in Vivo Study. Turk J Orthod. 2019 Dec 1;32(4):229-235. doi: 10.5152/TurkJOrthod.2019.19019. eCollection 2019 Dec. |
| 29130127 | Background | Lombardo L, Arreghini A, Ramina F, Huanca Ghislanzoni LT, Siciliani G. Predictability of orthodontic movement with orthodontic aligners: a retrospective study. Prog Orthod. 2017 Nov 13;18(1):35. doi: 10.1186/s40510-017-0190-0. |
| 24680028 | Background | Chisari JR, McGorray SP, Nair M, Wheeler TT. Variables affecting orthodontic tooth movement with clear aligners. Am J Orthod Dentofacial Orthop. 2014 Apr;145(4 Suppl):S82-91. doi: 10.1016/j.ajodo.2013.10.022. |
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| 17902334 | Background | Gill DS, Naini FB, Jones A, Tredwin CJ. Part-time versus full-time retainer wear following fixed appliance therapy: a randomized prospective controlled trial. World J Orthod. 2007 Fall;8(3):300-6. |
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