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ElSayed HS, El-Beialy AR, Palomo JM, Mostafa YA. Space Closure with Different Appointment Intervals: A Split-mouth Randomized Controlled Trial. Contemp Clin Dent 2024; 15:129-134. [PMID: 39206234 PMCID: PMC11349072 DOI: 10.4103/ccd.ccd_617_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 05/03/2022] [Accepted: 04/11/2024] [Indexed: 09/04/2024] Open
Abstract
Background Canine retraction has been successful with various force systems and retraction techniques. The appointment interval for force reactivation in canine retraction along the archwire is 4-8 weeks. Aims The aim was to evaluate the effect of different reactivation intervals on the rate of space closure. Settings and Design This split-mouth randomized clinical trial recruited 38 patients indicated for the first premolar extraction. Methods Monthly digital models were acquired for 6 months. The first premolars were extracted, and temporary anchorage devices were placed for maximum anchorage control. The canines were retracted using elastomeric chains which were replaced every 2, 4, 6, or 8 weeks. The monthly rate of canine retraction was measured. The time to space closure was calculated. The secondary outcome was the mesial drift of the first molars. Statistical Analysis The Kaplan-Meier survival analysis and the Friedman test evaluated and compared the groups. Results There was no significant difference between the monthly canine retraction rate or the first molar mesial drift between the groups. The mean time to space closure was 5.74 months in the 2-week reactivation group, which was statistically less than the other groups. Conclusions The 2-week reactivation interval may reduce time to space closure. Direct anchorage control with miniscrews limited anchorage loss significantly.
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Affiliation(s)
- Hend Salah ElSayed
- Department of Orthodontics and Pediatric Dentistry, Oral and Dental Research Division, National Research Centre, Giza, Egypt
| | - Amr Ragab El-Beialy
- Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Cairo University, Cairo, Egypt
| | - Juan Martin Palomo
- Case Western Reserve University School of Dental Medicine, Cleveland, OH, USA
| | - Yehya Ahmad Mostafa
- Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Future University in Egypt, Cairo, Egypt
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Hasan A, Hania M, Mandall N, Fleming PS. The scientific evidence for pre-adjusted edgewise attachments and mechanics. Br Dent J 2023:10.1038/s41415-023-6064-6. [PMID: 37474580 DOI: 10.1038/s41415-023-6064-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/17/2023] [Accepted: 03/02/2023] [Indexed: 07/22/2023]
Abstract
Introduction Fixed orthodontic appliance systems continue to evolve with a wealth of evidence emerging to underpin these refinements.Aims To present the evidence from comparative prospective research informing the selection of fixed appliance design and mechanics.Design Detailed literature review.Materials and methods An electronic search to identify randomised controlled trials and clinical controlled trials was undertaken using pre-defined search terms.Results Based on high-level evidence, no one bracket system has been proven superior in terms of efficiency or outcome. Similarly, a clear advantage associated with one wire type or dimension has not been shown. The effect of lacebacks in terms of anchorage management appears to be limited, while elastomeric chain and nickel titanium closing coils are associated with similar rates of space closure.Discussion A wealth of high-quality recent evidence to support the selection of fixed appliance attachments, archwires and auxiliaries, including lacebacks and space closing mechanics, was identified.Conclusions There has been a considerable increase in the amount of high-quality evidence informing the choice of pre-adjusted edgewise mechanics in recent years. This information can be used to make evidence-based decisions in the selection and manipulation of fixed appliances during daily practice.
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Affiliation(s)
- Aliya Hasan
- Orthodontic Speciality Registrar, The Royal London Hospital, London, United Kingdom
| | - Mohamed Hania
- Orthodontic Speciality Senior Registrar, University Dental Hospital of Manchester, United Kingdom
| | - Nicky Mandall
- Consultant in Orthodontics, Tameside Hospital NHS Foundation Trust, Lancashire, United Kingdom
| | - Padhraig S Fleming
- Chair/Professor of Orthodontics, School of Dental Science, Trinity College Dublin, Ireland; Honorary Professor, Queen Mary University of London, United Kingdom.
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Johal A, Bourauel C, Moghanchi S, Dickerson T, Gaudin P, Elliott EL. The Tip and Torque adjustable bracket as a new concept in design. Angle Orthod 2022; 92:380-387. [PMID: 35061018 PMCID: PMC9020388 DOI: 10.2319/061421-474.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 11/01/2021] [Indexed: 05/22/2024] Open
Abstract
OBJECTIVES To test a new concept in bracket design-the tip and torque adjustable bracket (TTAB)-to identify its integral ability to change both tip and torque. MATERIALS AND METHODS The newly designed TTAB underwent independent testing using the orthodontic measurement and simulation system. The TTAB incorporated Roth tip and torque prescription values, with the unique quality of the bracket to enhance or reduce the innate prescribed values of tip (by either +10° or -10°) and torque (by either +7.5° or -7.5°). The TTAB was tested using both the incorporated standard Roth prescription on the rate of canine retraction (sliding mechanics), using 0.018-inch stainless-steel (SS) arch wire, and with alteration of tip values (-10° and +10°). Similarly, frictional measurements and torque evaluations using 0.019 × 0.025-inch SS arch wire were undertaken with the standard prescription and altered torque (+7.5° and -7.5°). In addition, a number of control investigations were performed. Differences were analyzed using analysis of variance. RESULTS The rate of observed tooth movement for the TTAB with its prescribed baseline values was comparable to that of the control brackets. Importantly, the alteration of TTAB tip to -10° and +10° significantly (P < .001) increased and reduced, respectively, the rates of canine retraction. In the alteration of torque, at +7.5° and -7.5°, the bracket delivered a moment of +9.3 (2.8) Nmm and -11.9 (3.8) Nmm, respectively, to the lateral incisor (P < .001). CONCLUSIONS This in vitro study demonstrates a new concept in preadjusted edgewise bracket design, offering adjustable tip and torque, with the potential for expanded clinical scope.
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Moradinejad M, Ghorani N, Heidarpour M, Noori M, Rakhshan V. Effects of a ceramic active self-ligating bracket on retraction/tipping/ rotation of canine, premolar mesialization, and transverse arch dimensions: A preliminary single-blind split-mouth randomized clinical trial. Dent Res J (Isfahan) 2021; 18:81. [PMID: 34760072 PMCID: PMC8554475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 01/19/2021] [Accepted: 03/17/2021] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND There is no clinical study on ceramic self-ligating brackets (SLBs). Therefore, this preliminary study was conducted for the first time to address its effects. MATERIALS AND METHODS This split-mouth randomized trial was performed on 32 quadrants in 16 orthodontic patients needing extraction of maxillary premolars and distalization of canines. In each blinded patient, right/left sides were randomized into control (ceramic bracket) and experimental (ceramic SLB) groups. Dental stone models were taken before canine retraction and 3 months into retraction. Models were digitized as three-dimensional models. Changes were measured on superimposed models. Groups were compared using Wilcoxon signed-rank test (α = 0.05, β = 0.1). RESULTS Both bracket types caused significant changes after 3 months in terms of all assessed clinical outcomes (P ≤ 0.002). Compared to conventional ceramic brackets (control), ceramic SLBs reduced retraction rate (P = 0.001), canine rotation (P = 0.001), canine tipping (P = 0.002), and arch expansion at the canine site (P = 0.003). However, the extents of anchorage loss (P = 0.796) and arch constriction in the premolar area (P = 0.605) were not statistically different between the bracket types. CONCLUSION Compared to conventional metal-lined ceramic brackets, active ceramic SLB can increase the duration of canine distalization, while reducing canine rotation and tipping (inducing more bodily movements). The loss of anchorage with ceramic SLB was similar to that of conventional ceramic bracket after 3 months of treatment (considering the lower rate of SLB canine retraction during that time). Both brackets similarly constricted the arch at the premolar site. In the canine area, they expanded the arch, with the SLB causing smaller extents of expansion.
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Affiliation(s)
- Mehrnaz Moradinejad
- Department of Orthodontics, Faculty of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Nasim Ghorani
- Orthodontist in Private Practice, Isfahan, Iran,Address for correspondence: Dr Nasim Ghorani, #5, Soroush 2 Alley, Sadi Park, Isfahan, Iran. E-mail:
| | - Majid Heidarpour
- Department of Orthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Vahid Rakhshan
- Department of Dental Anatomy, Dental Faculty, Azad University, Tehran, Iran
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Maizeray R, Wagner D, Lefebvre F, Lévy-Bénichou H, Bolender Y. Is there any difference between conventional, passive and active self-ligating brackets? A systematic review and network meta-analysis. Int Orthod 2021; 19:523-538. [PMID: 34629309 DOI: 10.1016/j.ortho.2021.09.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 09/18/2021] [Accepted: 09/21/2021] [Indexed: 01/31/2023]
Abstract
AIM To test the null hypothesis that there was no difference in treatment efficiency between therapies undertaken with conventional (CBs), passive self-ligating (PSLBs) or active self-ligating (ASLBs) brackets. MATERIALS AND METHODS An electronic search was performed in 3 data bases (Pubmed, Web of Science, Cochrane Library) from their origin up to January 2019. Additional references were hand searched. Search was strictly restricted to randomized controlled trials (RCTs) and split-mouth design studies (SMDs). RCTs and SMDs were initially processed separately and subsequently combined in a network meta-analysis. The following variables were evaluated: treatment duration, number of visits, occlusal outcomes, alignment rate, transverse arch dimensional changes, incisor position modification, rate of space closure, anchorage loss, bond failure, root resorption, perception of discomfort during the initial phase of alignment, time to ligate in or to untie an archwire, periodontal variables, quality of life. RESULTS On 229 papers, 30 RCTs and 9 SMDs were finally included in this study. Out of 85 comparisons, 16 only revealed statistically significant differences. It was quicker to untie and ligate an 0.014 NiTi arch from/in 6 ASLBs anterior ceramic brackets compared to 6 ceramic CBs. It was also more painful to insert and remove an 0.019×0.025 SS wire in/from PSLB's brackets compared to CB's attachments. Compared to conventional brackets, there was less maxillary incisor proclination with PSLBs in non-extraction cases. Moreover, there was less bleeding on probing 4-5 weeks after bonding with PSLBs compared to CBs brackets. The only significant difference between ASLBs and PSLBs was that alignment was 10 days faster with active self-ligating braces compared with passive self-ligating braces even if treatment duration between ASLBs and PSLBs was not significantly different. The network meta-analysis revealed that IMPA was greater in extractions cases with CBs compared with both ASLBs (+2,5°) and PSLBs (+1,6°). CONCLUSIONS The vast majority of the studied variables did not show any significant differences between the three types of brackets. The most significant findings were that it was quicker to insert and remove archwires from ASLBs compared to CBs, and it was more painful to insert and remove an 0.019×0.025" stainless steel wire in/from PSLBs compared to CBs. The major difference between ASLBs and PSLBs was that alignment was 10 days faster with active self-ligating braces compared with passive self-ligating braces even if treatment duration between ASLBs and PSLBs was not significantly different. Most of the claims put forward by the suppliers were not substantiated by our network meta-analysis.
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Affiliation(s)
- Raphaëlle Maizeray
- Sous-section d'Orthopédie dento-faciale, Faculté de Chirurgie Dentaire, Université de Strasbourg, 8, rue Ste-Élisabeth, 67000 Strasbourg, France.
| | - Delphine Wagner
- Sous-section d'Orthopédie dento-faciale, Faculté de Chirurgie Dentaire, Université de Strasbourg, 8, rue Ste-Élisabeth, 67000 Strasbourg, France
| | - François Lefebvre
- Santé publique, Méthodologie et Biostatistiques, Hôpitaux Universitaires de Strasbourg, 1, place de l'hôpital, 67091 Strasbourg, France
| | - Hélène Lévy-Bénichou
- Sous-section d'Orthopédie dento-faciale, Faculté de Chirurgie Dentaire, Université de Strasbourg, 8, rue Ste-Élisabeth, 67000 Strasbourg, France
| | - Yves Bolender
- Sous-section d'Orthopédie dento-faciale, Faculté de Chirurgie Dentaire, Université de Strasbourg, 8, rue Ste-Élisabeth, 67000 Strasbourg, France
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Ghorani N, Moradinejad M, Heidarpour M, Noori M, Rakhshan V. Effects of a ceramic active self-ligating bracket on retraction/tipping/rotation of canine, premolar mesialization, and transverse arch dimensions: A preliminary single-blind split-mouth randomized clinical trial. Dent Res J (Isfahan) 2021. [DOI: 10.4103/1735-3327.328749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Mittal R, Attri S, Batra P, Sonar S, Sharma K, Raghavan S. Comparison of orthodontic space closure using micro-osteoperforation and passive self-ligating appliances or conventional fixed appliances. Angle Orthod 2020; 90:634-639. [PMID: 33378478 PMCID: PMC8032271 DOI: 10.2319/111119-712.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 02/01/2020] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVES To examine the effect of micro-osteoperforation (MOP) on the space closure rate using passive self-ligating or conventional brackets. MATERIALS AND METHODS This was a two-arm parallel randomized controlled trial undertaken at the outpatient department of a dental college. There were 60 participants (30 women and 30 men) who fulfilled the inclusion criteria. Both the study and control groups were subjected to MOPs throughout the period of space closure. MOPs were repeated every 28 days. The experimental group (mean age 19.5 ± 1.66 years) was bonded with passive self-ligating brackets while the control group (mean age 19.9 ± 1.13 years) was bonded with conventional brackets. Both groups were examined and compared for rate of space closure. An evaluation was conducted for both groups until the entire extraction space was closed and confirmed by evaluation of a tight contact between the canine and the second premolar using a piece of dental floss. RESULTS Before the initiation of retraction, all initial criteria were similar between the two groups (P > .05). No difference was observed between the two groups in the rate of space closure (P > .05). CONCLUSIONS MOP in conjunction with passive self-ligation does not increase the rate of orthodontic space closure when compared with MOP used with conventional brackets.
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Khanemasjedi M, Moradinejad M, Javidi P, Niknam O, Jahromi NH, Rakhshan V. Efficacy of elastic memory chains versus nickel-titanium coil springs in canine retraction: A two-center split-mouth randomized clinical trial. Int Orthod 2017; 15:561-574. [PMID: 29153282 DOI: 10.1016/j.ortho.2017.09.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The use of newly-introduced elastic memory chains (EMCs) in space closure is increasingly gaining popularity. However, no clinical studies have evaluated their efficacy. Therefore, this study was conducted. METHODS In this two-center split-mouth single-blind randomized controlled trial, 21 jaws were divided into 42 quadrants. The two treatments [canine retraction using EMCs versus nickel-titanium (NiTi) coil springs (as control)] were randomly assigned to two quadrants of each jaw. The premolar space was measured at the baseline, and in the 1st, 2nd, and 3rd months of canine retraction, by a blinded orthodontist. Space closure rates were compared using a paired t-test. RESULTS The rates of space closure using NiTi springs were 1.93±0.62, 1.71±0.75, and 1.36±0.51mm/month, during the 1st, 2nd, and 3rd months of treatment, respectively. The 3-month average rates of space closure were 1.67±0.39 and 1.89±0.36mm/month in the NiTi and elastic groups, respectively (faster in the elastic group, P=0.022). CONCLUSIONS The application of elastic memory chains is as effective as NiTi springs.
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Affiliation(s)
- Mashallah Khanemasjedi
- Department of Orthodontics, Faculty of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mehrnaz Moradinejad
- Department of Orthodontics, Faculty of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Pedram Javidi
- Iranian Tissue Engineering and Graft Research Center, Tehran University of Medical Sciences, Tehran, Iran.
| | - Ozra Niknam
- Department of Orthodontics, Faculty of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Nima Haghighat Jahromi
- Department of Orthodontics, Faculty of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Vahid Rakhshan
- Iranian Tissue Engineering and Graft Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Dental Anatomy and Morphology, Dental Branch, Islamic Azad University, Tehran, Iran
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Efficacité des chaînettes élastiques à mémoire versus les ressorts hélicoïdaux en NiTi pour la rétraction des canines : une étude clinique randomisée en bouche divisée en deux centres. Int Orthod 2017; 15:561-574. [PMID: 29153283 DOI: 10.1016/j.ortho.2017.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Yang X, Xue C, He Y, Zhao M, Luo M, Wang P, Bai D. Transversal changes, space closure, and efficiency of conventional and self-ligating appliances. J Orofac Orthop 2017; 79:1-10. [DOI: 10.1007/s00056-017-0110-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 06/23/2017] [Indexed: 10/18/2022]
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Dehbi H, Azaroual MF, Zaoui F, Halimi A, Benyahia H. Efficacité thérapeutique des attaches autoligaturantes : revue systématique. Int Orthod 2017; 15:297-311. [PMID: 28778725 DOI: 10.1016/j.ortho.2017.06.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Hasnaa Dehbi
- Service d'orthopédie dentofaciale, faculté de médecine dentaire, Mohamed V university, avenue Allal el Fassi, rue Mohammed Jazouli, cité Al Irfane, BP 6212, Rabat, Maroc.
| | - Mohamed Faouzi Azaroual
- Service d'orthopédie dentofaciale, faculté de médecine dentaire, Mohamed V university, avenue Allal el Fassi, rue Mohammed Jazouli, cité Al Irfane, BP 6212, Rabat, Maroc
| | - Fatima Zaoui
- Service d'orthopédie dentofaciale, faculté de médecine dentaire, Mohamed V university, avenue Allal el Fassi, rue Mohammed Jazouli, cité Al Irfane, BP 6212, Rabat, Maroc
| | - Abdelali Halimi
- Service d'orthopédie dentofaciale, faculté de médecine dentaire, Mohamed V university, avenue Allal el Fassi, rue Mohammed Jazouli, cité Al Irfane, BP 6212, Rabat, Maroc
| | - Hicham Benyahia
- Service d'orthopédie dentofaciale, faculté de médecine dentaire, Mohamed V university, avenue Allal el Fassi, rue Mohammed Jazouli, cité Al Irfane, BP 6212, Rabat, Maroc
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Dehbi H, Azaroual MF, Zaoui F, Halimi A, Benyahia H. Therapeutic efficacy of self-ligating brackets: A systematic review. Int Orthod 2017; 15:297-311. [PMID: 28778722 DOI: 10.1016/j.ortho.2017.06.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Over the last few years, the use of self-ligating brackets in orthodontics has progressed considerably. These systems have been the subject of numerous studies with good levels of evidence making it possible to evaluate their efficacy and efficiency compared to conventional brackets. The aim of this study was to evaluate the therapeutic efficacy of self-ligating brackets by means of a systematic review of the scientific literature. MATERIALS AND METHODS A systematic study was undertaken in the form of a recent search of the electronic Pubmed database, oriented by the use of several keywords combined by Boolean operators relating to the therapeutic efficacy of self-ligating brackets through the study of tooth alignment, space closure, expansion, treatment duration and degree of discomfort. The search was limited to randomized controlled studies, and two independent readers identified studies corresponding to the selection criteria. RESULTS AND DISCUSSION The chosen articles comprised 20 randomized controlled trials. The studies analyzed revealed the absence of significant differences between the two types of system on the basis of the clinical criteria adopted, thereby refuting the hypothesis of the superiority of self-ligating brackets over conventional systems.
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Affiliation(s)
- Hasnaa Dehbi
- Service d'orthopédie dentofaciale, faculté de médecine dentaire, Mohamed V university, avenue Allal el Fassi, rue Mohammed Jazouli, cité Al Irfane, BP 6212, Rabat, Morocco.
| | - Mohamed Faouzi Azaroual
- Service d'orthopédie dentofaciale, faculté de médecine dentaire, Mohamed V university, avenue Allal el Fassi, rue Mohammed Jazouli, cité Al Irfane, BP 6212, Rabat, Morocco
| | - Fatima Zaoui
- Service d'orthopédie dentofaciale, faculté de médecine dentaire, Mohamed V university, avenue Allal el Fassi, rue Mohammed Jazouli, cité Al Irfane, BP 6212, Rabat, Morocco
| | - Abdelali Halimi
- Service d'orthopédie dentofaciale, faculté de médecine dentaire, Mohamed V university, avenue Allal el Fassi, rue Mohammed Jazouli, cité Al Irfane, BP 6212, Rabat, Morocco
| | - Hicham Benyahia
- Service d'orthopédie dentofaciale, faculté de médecine dentaire, Mohamed V university, avenue Allal el Fassi, rue Mohammed Jazouli, cité Al Irfane, BP 6212, Rabat, Morocco
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Affiliation(s)
- F McDonald
- Department of Orthodontics; King's College London Dental Institute
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