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Sokmen T, Bagcı N, Balos Tuncer B. Buccolingual inclination of posterior dentition in maxillary impacted canine patients using quadrant analysis - A cone-beam computed tomographic study. BMC Oral Health 2024; 24:1012. [PMID: 39210316 PMCID: PMC11363395 DOI: 10.1186/s12903-024-04782-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Accepted: 08/20/2024] [Indexed: 09/04/2024] Open
Abstract
BACKGROUND To examine the buccolingual inclination of maxillary posterior teeth, curve of Wilson, and transversal dimensions in palatally impacted maxillary canine patients, compared to controls by cone-beam computed tomography (CBCT). MATERIALS AND METHODS Pre-treatment images of 22 bilateral, 32 unilateral impacted maxillary canine patients and 30 controls were included. All patients had palatally impacted canines, with no posterior cross-bite. Data were reclassified in quadrants according to the presence of impaction, as the impaction quadrant (right and left quadrants of 22 bilateral impacted cases, and quadrants presenting impaction of 32 unilateral cases, n = 76), unaffected quadrant (quadrant without impaction in 32 unilateral cases, n = 32) and the control quadrant (right and left quadrants of 30 controls, n = 60) to evaluate the buccolingual inclination angle, transversal width, and arch perimeter. Additionally, comparisons were made regarding curve of Wilson and total arch perimeter among bilateral and unilateral impaction groups with the control group. Statistical analysis was performed by one-way ANOVA and Kruskal Wallis tests. Tukey or Dunn tests were used for comparisons between groups in pairs. RESULTS No significant difference was found for the buccolingual inclination of maxillary posterior teeth and curve of Wilson among groups. The buccolingual inclination of canines in the impaction quadrant was significantly lower than the other quadrants (p < 0.001). Basal bone width at the level of second premolars, and alveolar width at both premolars were significantly narrower in the impaction quadrant than in the unaffected quadrant (p < 0.05). Dental arch width at the level of first premolar was significantly decreased in the impaction quadrant compared to other quadrants (p < 0.05). Arch perimeter was significantly reduced in the impaction quadrant than in the unaffected quadrant (p < 0.05). CONCLUSION The presence of bilateral or unilateral palatally impacted maxillary canines did not effect the buccolingual inclination of posterior teeth, and curve of Wilson. Transverse discrepancy was evident in the impaction quadrant even in the absence of posterior cross-bite. Quadrant analysis was particularly useful in evaluating asymmetry for basal bone and alveolar bone widths in the premolar region in patients with unilateral palatally impacted maxillary canine patients.
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Affiliation(s)
- Tevhide Sokmen
- Department of Orthodontics, Faculty of Dentistry, Gazi University, Biskek cad. 1.sokak no:4 Emek, Ankara, 06490, Turkey.
| | - Nuray Bagcı
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - Burcu Balos Tuncer
- Department of Orthodontics, Faculty of Dentistry, Gazi University, Biskek cad. 1.sokak no:4 Emek, Ankara, 06490, Turkey
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Ahmed AS, Al-Nimri KS, Ahmed WS. Comparison of transverse dimensional and incisor changes between wide and narrow orthodontic archwires: a randomized controlled trial. Clin Oral Investig 2024; 28:338. [PMID: 38797781 DOI: 10.1007/s00784-024-05724-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 05/13/2024] [Indexed: 05/29/2024]
Abstract
OBJECTIVES To clinically compare the effects of broader archwires to standard archwires, using conventional brackets in both cases, on the transverse and incisor changes in maxillary and mandibular arches during leveling and alignment. MATERIALS AND METHODS Fifty-two patients presenting with crowding were allocated into two groups; one group received the broad Damon archwires while the other received standard 3M OrthoForm III Ovoid archwires. All participants were treated with conventional brackets using similar archwire sequences (0.014, 0.018, 0.016 × 0.022/0.016 × 0.025, 0.019 × 0.025 NiTi/CuNiTi archwires). Digital casts were obtained from alginate impressions before treatment (T0) and six weeks after inserting 0.019 × 0.025 NiTi archwires (T1). Pretreatment (T0) and post-alignment (T1) lateral cephalograms were obtained for each patient. The primary outcomes were the changes in the transverse arch dimensions and incisor inclination. The secondary outcomes were the horizontal and vertical linear changes in incisor position. RESULTS Complete data were collected for 47 patients. There was a significant increase in arch width during treatment within each group, except for upper inter-molar width in 3M group (P = 0.071). Damon wire induced a statistically significant increase in maxillary inter-second premolar width (P = 0.042), and mandibular inter-first premolar (P = 0.043), inter-second premolar (P = 0.008) and inter-molar widths (P = 0.033) compared to 3M group. The increase in incisor proclination and the linear change in incisor position were significant within each group, with less mandibular incisor proclination (P = 0.004) and horizontal advancement (P = 0.038) in the Damon group. CONCLUSIONS Damon archwires created a comparatively greater increase in the maxillary inter-second premolar width and the mandibular inter-first premolar, inter-second premolar, and inter-molar widths, and less proclination and horizontal advancement in mandibular incisors. The study provides invaluable evidence that using broad archwires with self-ligating brackets is the reason behind any greater expansion observed in this system rather than the unique mechanical and biological features exerted by the self-ligating system. CLINICAL RELEVANCE Our results suggest that Damon archwire might be a better alternative compared to the narrower standard archwires that are usually used with conventional brackets, especially in the mandibular arch, in cases where mild to moderate crowding is planned to be resolved with a non-extraction approach. However, as arch expansion in the absence of posterior crossbites raises the question of long-term stability, the reported advantage of the use of wide wires should be interpreted with caution and should be considered in the retention phase, bearing in mind that achieving a good post-treatment occlusion is important for enhancing post-treatment stability.
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Affiliation(s)
- Amgad S Ahmed
- Division of Orthodontics, Department of Preventive Dentistry, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, 22110, Jordan.
| | - Kazem S Al-Nimri
- Division of Orthodontics, Department of Preventive Dentistry, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Wesam S Ahmed
- College of Health and Life Sciences, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar.
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Al-Ibrahim HM, Hajeer MY, Burhan AS, Haj Hamed Y, Alkhouri I, Zinah E. Assessment of Dentoalveolar Changes Following Leveling and Alignment of Severely Crowded Upper Anterior Teeth Using Self-Ligating Brackets Alone or With Flapless Piezocision Compared to Traditional Brackets: A Randomized Controlled Clinical Trial. Cureus 2023; 15:e35733. [PMID: 36875255 PMCID: PMC9984186 DOI: 10.7759/cureus.35733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/03/2023] [Indexed: 03/06/2023] Open
Abstract
Introduction Dental crowding is one of the most common types of malocclusions. It can be treated with or without extraction, depending on the severity of the crowding. Extraction-based orthodontic treatments are the preferred treatment option in cases of severe crowding, but they take longer than non-extraction cases. Objective This study aimed to evaluate the dentoalveolar changes following the orthodontic treatment of severely crowded maxillary anterior teeth in adults using self-ligating brackets alone or combined with flapless piezocision. Materials and methods The participants in this study were 63 patients (46 females and 17 males; mean age SD: 19.71 ± 2.74 years) who attended the Department of Orthodontics at the University of Damascus from January 2020 to December 2021. The participants were divided into three groups at random: Group (1): traditional brackets group, Group (2): self-ligating brackets group; and Group (3): self-ligating brackets with flapless piezocision group. Little's Irregularity Index (LII) was measured at five assessment times: before the onset of orthodontic treatment (T0), after one month (T1), after two months (T2), after three months (T3), and at the end of the leveling and alignment phase (T4). The intercanine width (lingual), the intercanine width (cusp), and the canine rotation angle were measured at two assessment times: before the onset of orthodontic treatment (T0) and at the end of the leveling and alignment phase (T4). Results The three studied groups had statistically significant differences in terms of LII during the first three months, and the most significant improvement of LII was in the self-ligating brackets with the piezocision group (P < 0.001). In addition, the intercanine width (cusp) at the end of the leveling and aligning phase revealed greater mean values in both self-ligating brackets groups compared to the traditional brackets group, and the differences were statistically significant (P < 0.001). Otherwise, no statistically significant differences were found at the end of the leveling and aligning phase in the intercanine width (lingual) or the canine rotation angle between the three studied groups (P > 0.05). Conclusion Using self-ligating brackets with flapless piezocision revealed more significant results concerning LII as compared to other groups. Thus, combining these two acceleration methods could get more effective results in aligning severely crowded teeth. Self-ligating brackets, whether used alone or with flapless piezocision, resulted in greater intercanine width at the cusp level. The type of brackets (traditional or self-ligating) did not affect the canine rotation angle.
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Affiliation(s)
- Heba M Al-Ibrahim
- Department of Orthodontics, University of Damascus Faculty of Dentistry, Damascus, SYR
| | - Mohammad Y Hajeer
- Department of Orthodontics, University of Damascus Faculty of Dentistry, Damascus, SYR
| | - Ahmad S Burhan
- Department of Orthodontics, University of Damascus Faculty of Dentistry, Damascus, SYR
| | - Yaser Haj Hamed
- Department of Orthodontics, Appolonia Pediatric Dentistry Center, Dubai, ARE
| | - Issam Alkhouri
- Department of Oral and Maxillofacial Surgery, University of Damascus Faculty of Dentistry, Damascus, SYR
| | - Eiad Zinah
- Department of Dental Public Health, University College London, London, GBR
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Intra-Lesional Injection of Triamcinolone to Palatoplasty Scar to Aid Reversal of Transverse Maxillary Relapse after Orthognathic Surgery. J Craniofac Surg 2021; 33:e416-e418. [PMID: 34753867 DOI: 10.1097/scs.0000000000008347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
ABSTRACT A 32-year-old female with a repaired right unilateral cleft lip and palate underwent several surgical and orthodontic procedures during the rehabilitation process of her condition. Nine years after this extensive treatment she underwent transverse relapse of her maxilla and requested a consultation for its correction as she felt her speech and chewing were negatively affected. She presented with a transverse maxillary arch collapse on the cleft side with significant palatal scarring secondary to multiple palate procedures. A course of maxillary expansion and dental alignment with fixed orthodontic appliances was carried out. In addition, she had 2 triamcinolone injections 7 months apart while undergoing orthodontic treatment and one 10 months after completion to soften the scarred palatal tissues. The maxillary arch was successfully expanded and aligned. She was retained with a removable chrome cobalt palatal frame to be used full-time and assure stability of the correction. She has been followed for 4 years with no clinical evidence of relapse. Triamcinolone injection into significant palatal scarring in cleft palate patients with a decreased transverse maxillary dimension can be considered an adjunct procedure in conjunction with orthodontic treatment.
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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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González-Sáez A, Antonio-Zancajo L, Montero J, Albaladejo A, Melo M, Garcovich D, Alvarado-Lorenzo A. The Influence of Friction on Design of the Type of Bracket and Its Relation to OHRQoL in Patients Who Use Multi-Bracket Appliances: A Randomized Clinical Trial. MEDICINA-LITHUANIA 2021; 57:medicina57020171. [PMID: 33671217 PMCID: PMC7922052 DOI: 10.3390/medicina57020171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/07/2021] [Accepted: 02/11/2021] [Indexed: 11/16/2022]
Abstract
Background and objectives: The aim of this study was to evaluate the influence of friction on design of the type of bracket, patients’ perception of pain and the impact on their oral health-related quality of life. Materials and Methods: A randomized clinical trial was carried out with 90 patients (62.2% women and 37.8% men) with three kinds of fixed multi-bracket appliances: Conventional (GC), fixed multi-bracket low friction (GS) and self-ligating (GA). The VAS (Visual Analogue Scale) was used to determine pain during the first seven days of treatment at different points in time. The patients were also given the OHIP-14 (Oral Health Impact Profile) questionnaire to analyse their oral health-related quality of life (OHRQoL) after the first 30 days of treatment. The ANOVA test was used for the analysis of the variables and the post hoc Bonferroni test for the comparison between groups. Results: Maximum pain was observed between one and two days after the start of treatment. The GC group showed the greatest degree of pain, with maximum values (4.5 ± 2.0) at 24 h. The self-ligation brackets show lower impact on patients’ oral health-related quality of life (0.8 ± 2.2, p < 0.01). Conclusions: Friction in the type of bracket influences pain and the Oral Health-Related Quality of Life of patients who use multi-bracket fixed orthodontics.
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Affiliation(s)
- Adriana González-Sáez
- Faculty of Medicine, University of Salamanca, Avenida Alfonso X el Sabio s/n, 37007 Salamanca, Spain; (A.G.-S.); (J.M.); (A.A.); (A.A.-L.)
| | - Laura Antonio-Zancajo
- Faculty of Medicine, University of Salamanca, Avenida Alfonso X el Sabio s/n, 37007 Salamanca, Spain; (A.G.-S.); (J.M.); (A.A.); (A.A.-L.)
- Correspondence: ; Tel.: +34-920-30-20-64
| | - Javier Montero
- Faculty of Medicine, University of Salamanca, Avenida Alfonso X el Sabio s/n, 37007 Salamanca, Spain; (A.G.-S.); (J.M.); (A.A.); (A.A.-L.)
| | - Alberto Albaladejo
- Faculty of Medicine, University of Salamanca, Avenida Alfonso X el Sabio s/n, 37007 Salamanca, Spain; (A.G.-S.); (J.M.); (A.A.); (A.A.-L.)
| | - María Melo
- Conservative Dentistry and Endodontics, Department of Stomatology, University of Valencia, Gascó Oliag 1, 46010 Valencia, Spain;
| | - Daniele Garcovich
- Department of Dentistry, European University of Valencia, Passeig de lÁlbereda, 7, 46010 Valencia, Spain;
| | - Alfonso Alvarado-Lorenzo
- Faculty of Medicine, University of Salamanca, Avenida Alfonso X el Sabio s/n, 37007 Salamanca, Spain; (A.G.-S.); (J.M.); (A.A.); (A.A.-L.)
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Alessio Junior LE, Almeida RRD, Guerra JGP, Maranhão OBV, Janson G. Transverse stability of Class II malocclusion correction with the pendulum appliance. Am J Orthod Dentofacial Orthop 2020; 158:357-362. [PMID: 32680657 DOI: 10.1016/j.ajodo.2019.08.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 08/01/2019] [Accepted: 08/01/2019] [Indexed: 11/25/2022]
Abstract
INTRODUCTION This study aimed to evaluate the stability of transverse changes after Class II malocclusion correction with the pendulum fixed distalizer, followed by preadjusted edgewise fixed orthodontic appliances. METHODS This longitudinal study was conducted in the maxillary dental casts of 20 Class II malocclusion subjects (mean age, 12.5 years; 14 females and 6 males). Eighty 3-dimensional maxillary dental casts were analyzed; 20 at the beginning of treatment, 20 after distalization, 20 after edgewise appliance debonding, and 20 at 5 years posttreatment. Maxillary transverse distances between canines, first premolars, second premolars, first molars, and second molars were analyzed using Geomagic Studio 5 (3D Systems, Rock Hill, SC). RESULTS There were no significant changes in intercanine distance during and after treatment. There were significant interfirst and intersecond premolar distance increases during treatment. There were significant interfirst and intersecond molar distance increases during the distalization phase. However, there were significant decreases in these distances at the end of treatment. There were no significant long-term posttreatment changes. CONCLUSIONS The intercanine distance remains stable during and after treatment. The interfirst and intersecond premolar distances significantly increase during treatment and remain stable after treatment. The interfirst and intersecond molar distances increase during the distalization phase, decrease at the end of treatment, and remain stable after treatment.
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Affiliation(s)
| | | | | | | | - Guilherme Janson
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil.
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Yazıcıoğlu S, Öz AA, Öz AZ, Arıcı N, Özer M, Arıcı S. Buccolingual Inclination Effects of Self-Ligating and Conventional Premolar Brackets: A Cone Beam Computed Tomography Study. Turk J Orthod 2020; 33:110-114. [PMID: 32637192 DOI: 10.5152/turkjorthod.2020.19079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 02/20/2020] [Indexed: 11/22/2022]
Abstract
Objective This study aimed to compare the effects of passive self-ligating (PSL) and conventional ligating (CL) of brackets on the buccolingual inclination (BLINC) of the maxillary premolars. Methods This in vitro study included a PSL bracket group and a CL bracket group. Acrylic teeth on typodonts were aligned using 0.014-inch heat-activated nickel titanium (HANT) (T1) and 0.019×0.025-inch HANT (T2) and 0.021×0.025-inch stainless steel (SS) (T3) archwires in a sequence. Standardized cone beam computed tomography (CBCT) images were taken immediately after each archwire stage. The differences of premolar teeth BLINC values in the 0.019×0.025-inch and 0.014-inch HANT archwires (T2-T1) and 0.021×0.025-inch SS and 0.019×0.025-inch HANT archwires (T3-T2) were compared between PSL and CL groups. The value of p < 0.05 was considered statistically significant. Results The BLINC change of the second premolar (SPM) showed a statistically significant difference (p=0.008), but the BLINC change of the first premolar (FPM) (p=0.056) between the groups showed no statistically significant difference during the T2-T1 stage. However, there were statistically significant differences between two groups in the BLINC of the FPM (p=0.032) and SPM (p=0.032) in the T3-T2 stage. The angular changes in the buccal direction in the PSL group were higher than those in the CL group. Conclusion The PSL upper premolar brackets used with the 0.021×0.025-inch SS archwire produced more buccal crown movement of the upper PM teeth compared with that of the CL brackets.
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Affiliation(s)
- Sabahat Yazıcıoğlu
- Department of Orthodontics, Ondokuz Mayıs University School of Dentistry, Samsun, Turkey
| | - A Alper Öz
- Department of Orthodontics, Ondokuz Mayıs University School of Dentistry, Samsun, Turkey
| | - A Zeynep Öz
- Department of Orthodontics, Ondokuz Mayıs University School of Dentistry, Samsun, Turkey
| | - Nursel Arıcı
- Department of Orthodontics, Ondokuz Mayıs University School of Dentistry, Samsun, Turkey
| | - Mete Özer
- Department of Orthodontics, Ondokuz Mayıs University School of Dentistry, Samsun, Turkey
| | - Selim Arıcı
- Department of Orthodontics, Ondokuz Mayıs University School of Dentistry, Samsun, Turkey
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Ren X, Li J, Zhao Y, Li H, Lei L. Torque expression by active and passive self-ligating brackets in patients with four premolar extractions: A retrospective study. Orthod Craniofac Res 2020; 23:509-516. [PMID: 32583548 DOI: 10.1111/ocr.12403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/30/2020] [Accepted: 06/18/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Appropriate torque expression contributes to ideal treatment outcomes both clinically and aesthetically. Whether active and passive self-ligating brackets (SLBs) have different torque-control capability in vivo has never been reported. The purpose of present study was to explore whether there was difference in torque expression in active and passive SLBs. SETTING AND SAMPLE POPULATION In this retrospective study, 225 patients with four first premolar extractions were enrolled. For each patient, the digital lateral cephalometric radiographs were taken before and after treatment. MATERIALS AND METHODS The study consisted of 2 groups: 111 subjects were treated with passive SLBs (Damon Q, Ormco) and 114 subjects with active SLBs (Empower 2, American Orthodontics). Measurements to determine skeletal changes and incisor inclination were obtained from cephalometric tracings using Dolphin software (version 11.8, USA). Comparisons in both groups and intergroups were compared using t tests and chi-square test. RESULTS Significant differences in the variation of U1-SN(°), U1-NA(°), L1-NB(°) and L1-FH(°) were found between two groups. More labially inclined maxillary incisors were found in active SLB group, while more labially inclined mandibular incisors were observed in passive SLB group. CONCLUSIONS With the present prescription set in the two brackets, active SLBs achieved more proclined maxillary incisors and retroclined mandibular incisors. Clinicians should take torque expression of brackets into consideration during orthodontic treatment.
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Affiliation(s)
- Xinyi Ren
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Jiao Li
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Yunhe Zhao
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Houxuan Li
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Lang Lei
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
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Arriola-Guillén LE, Rodríguez-Cárdenas YA, Aliaga-Del Castillo A, Ruíz-Mora GA, Dias-Da Silveira HL. Inter-premolar width changes related to the orthodontic traction of maxillary impacted canines in adolescents and young adults: A retrospective CBCT study. Int Orthod 2020; 18:480-489. [PMID: 32335124 DOI: 10.1016/j.ortho.2020.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/08/2020] [Accepted: 03/09/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Maxillary canine impaction is directly associated with a narrow maxillary arch, mainly in the inter-premolar widths. This study compared the transverse changes at the level of maxillary premolars after traction of maxillary impacted canines (MICs) in adolescents and young adults through three main goals: to compare unilateral versus bilateral cases, to compare buccally versus palatally MIC cases, and to compare the affected versus non-affected side exclusively in the unilateral group. METHODS This before and after CBCT study involved 45 MIC orthodontically tractioned until the occlusal plane with a standardized protocol. The sample was classified regarding the impaction type (unilateral versus bilateral), impaction location (palatal versus buccal) and the affected versus unaffected sides in the unilateral cases. MIC characteristics as impaction sector, height, and complexity of the traction, as well as α and β angles, canine root length and area were measured. Moreover, cephalometric characteristics were also evaluated. Mann-Whitney U or Wilcoxon signed-rank tests and multiple regressions were applied (α=0.05). RESULTS Maxillary inter-premolar widths (first or second) expanded approximately 3mm after traction of unilateral or bilateral MIC (P>0.05). Changes in hemi-arch widths between palatal (1.67mm) versus buccal (1.90mm) MIC were similar (P>0.05). In unilateral impaction, the transversal changes on the affected side were 2mm versus almost 1mm observed in the unaffected side (P<0.05). Finally, the multiple linear regressions were identified to the ANB angle, the impaction sectors and the distance from middle raphe to the cusp tip of MIC as influential variables. CONCLUSION The maxillary inter-premolar widths increase after traction of MIC without differences between type or location of impaction. In addition, the transverse change in the affected side in unilateral MIC is greater than the unaffected side resolving the earlier transverse asymmetry.
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Affiliation(s)
- Luis Ernesto Arriola-Guillén
- Universidad Científica del Sur, School of Dentistry, Division of Orthodontics and Division of Oral and Maxillofacial Radiology, Lima, Perú.
| | | | | | - Gustavo Armando Ruíz-Mora
- Universidad Nacional de Colombia, Faculty of Dentistry, Division of Orthodontics, Bogotá D.C, Colombia
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Moyano J, Montagut D, Perera R, Fernández-Bozal J, Puigdollers A. Comparison of changes in the dental transverse and sagittal planes between patients treated with self-ligating and with conventional brackets. Dental Press J Orthod 2020; 25:47-55. [PMID: 32215477 PMCID: PMC7077942 DOI: 10.1590/2177-6709.25.1.047-055.oar] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 02/20/2019] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Several advantages have been established regarding the efficiency of self-ligating brackets (SL). In spite of some controversy surrounding this question in the literature, clinical results confirm that "arch development" requires fewer extractions. OBJECTIVE The objective of this study was to compare changes in the transverse and sagittal planes in patients treated with conventional ligating brackets (CL)as well as in patients treated with SL brackets and oversized arches. METHODS A sample was selected from a pool of 300 consecutive cases treated by a single clinician: 51 patients with SL brackets and oversized wires, and 55 with CL brackets. These two groups were compared with a control group of 20 patients. All plaster models were scanned and dental landmarks were measured to identify changes from commencement (T0) to conclusion (T1) of treatment. Lateral cephalograms were analyzed for changes in the lower incisor (IMPA) and the first lower molar distal angulation (MAng). Intraoperator reliability was tested with linear regression analysis. To assure all groups were comparable at T0, an ANOVA test with a 95%confidence interval (CI) was performed for all values. To assess changes from T0 to T1 in all groups, a Student's t-test with 95% CI was used. Finally, results from the three groups were compared using an ANOVA-test (95% CI) and a post-hoc test. RESULTS Increases in all the transverse variables were recorded in the two groups treated (SL and CL), except for the lower intercanine distance in the SL group. IMPA difference from T0 to T1 was higher in the CL group, and molar distal angulation (MAng) took place in the SL group. CONCLUSIONS Self-ligating brackets with oversized arches and conventional ligating brackets showed increases in all variables in the transverse plane, except for the SL group at the mandibular intercanine distance. In comparison with the CL group, fewer different IMPA values were observed in the SL group, in which distal molar angulation occurred.
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Affiliation(s)
- Javier Moyano
- Universitat Internacional de Catalunya, School of Dentistry, Department of Orthodontics (Barcelona, Spain)
| | | | | | - Javier Fernández-Bozal
- Universitat Internacional de Catalunya, School of Dentistry, Department of Orthodontics (Barcelona, Spain)
| | - Andreu Puigdollers
- Universitat Internacional de Catalunya, School of Dentistry, Department of Orthodontics (Barcelona, Spain)
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Nam HJ, Flores-Mir C, Major PW, Heo G, Kim J, Lagravère MO. Dental and skeletal changes associated with the Damon system philosophical approach. Int Orthod 2019; 17:621-633. [PMID: 31474510 DOI: 10.1016/j.ortho.2019.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To compare the skeletal and dentoalveolar changes produced by the Damon system's treatment philosophy to traditional orthodontic treatment techniques. MATERIALS AND METHODS An electronic search in four major databases was completed: Cochrane, PubMed, EMBASE, and Google Beta Scholar on October 5th, 2018. Randomized controlled trials, prospective and retrospective controlled clinical trials were included in this systematic review. The quality assessment of individual studies was done using two different tools: The Cochrane Risk of Bias Assessment Tool (RTCs) and The Methodological Index for Non-Randomized Studies (MINORS) (non-RCTs). RESULTS Seven studies were included for this qualitative analysis. Six studies compared the Damon system to various types of conventional (non self-ligating bracket) system as a comparison group. One study used a quad helix as a comparison for a few months before a full bonding appointment with conventional brackets. The majority of studies found an increase in maxillary inter-canine, inter-premolar, and intermolar distance after the treatment in both the Damon and comparison groups. Yet, all studies concluded that there is no significant difference in the final transverse dimension between the two groups. One study also found that the transverse expansion was achieved mainly by tipping movement of posterior dentition, and a decrease in the posterior buccal bone area was evident in both groups after treatment. CONCLUSION There is not enough evidence to support the claim that the Damon system allows additional arch expansion with better tipping control than with traditional techniques.
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Affiliation(s)
- Hye Jin Nam
- School of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, ECHA 5-524, 11405, 87th avenue, Edmonton, Alberta T6G 1C9, Canada
| | - Carlos Flores-Mir
- School of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, ECHA 5-524, 11405, 87th avenue, Edmonton, Alberta T6G 1C9, Canada
| | - Paul W Major
- School of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, ECHA 5-524, 11405, 87th avenue, Edmonton, Alberta T6G 1C9, Canada
| | - Giseon Heo
- School of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, ECHA 5-524, 11405, 87th avenue, Edmonton, Alberta T6G 1C9, Canada
| | - Justin Kim
- School of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, ECHA 5-524, 11405, 87th avenue, Edmonton, Alberta T6G 1C9, Canada
| | - Manuel O Lagravère
- School of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, ECHA 5-524, 11405, 87th avenue, Edmonton, Alberta T6G 1C9, Canada.
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Bashir R, Sonar S, Batra P, Srivastava A, Singla A. Comparison of transverse maxillary dental arch width changes with self-ligating and conventional brackets in patients requiring premolar extraction - A randomised clinical trial. Int Orthod 2019; 17:687-692. [PMID: 31466930 DOI: 10.1016/j.ortho.2019.08.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE The purpose of this study was to evaluate, the change in the transverse maxillary arch dimensions, in patients requiring all first premolar extractions when using Active and Passive Self-ligating brackets, and comparing them with Conventional brackets. MATERIALS AND METHODS This study was a non-blinded randomised clinical trial, which consisted of 42 patients (21 males and 21 females) within the age group of 16-25 years, having bimaxillary protrusion. They were divided into three groups with 14 patients each. In Group 1 - Conventional brackets (3M Unitek), in Group 2 - Passive Self-ligation brackets: Smart Clip (3M Unitek), and in Group 3 - Active Self-ligation brackets: Empower AO (American Orthodontics) were bonded. All brackets had MBT prescription and 0.02" slot size. Dental study models were taken before the start of treatment and after six months of retraction. Inter-canine and intermolar widths were measured in all the three groups in the above mentioned stages. RESULTS As compared to Conventional brackets, Self-ligating brackets (Passive and Active) showed greater increase in the transverse arch widths. Furthermore, between Passive and Active Self-ligating brackets, Passive Self-ligating brackets - Smart Clip (Group 2) showed a greater increment in the transverse arch dimensions, with an increase of 4.89mm in the inter-canine width and 3.4mm in intermolar width. CONCLUSION Significant difference was found between Self-ligating brackets and the Conventional bracket system regarding maxillary arch width dimensional changes. Passive Self-ligating brackets - Smart Clip (Group 2) showed the highest and inter-molar width increase.
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Affiliation(s)
- Rehana Bashir
- Institute of Dental studies and Technologies, 201201 Modinagar, UP, India.
| | - Saurabh Sonar
- Institute of Dental studies and Technologies, 201201 Modinagar, UP, India
| | - Puneet Batra
- Institute of Dental studies and Technologies, 201201 Modinagar, UP, India
| | - Amit Srivastava
- Institute of Dental studies and Technologies, 201201 Modinagar, UP, India
| | - Anu Singla
- Institute of Dental studies and Technologies, 201201 Modinagar, UP, India
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Lucchese A, Manuelli M, Albertini P, Ghislanzoni LH. Transverse and torque dental changes after passive self-ligating fixed therapy: A two-year follow-up study. Am J Orthod Dentofacial Orthop 2019; 156:94-103. [DOI: 10.1016/j.ajodo.2018.08.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 08/01/2018] [Accepted: 08/01/2018] [Indexed: 12/01/2022]
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Camouflage treatment of skeletal Class III malocclusion in an adult cleft-palate patient using passive self-ligating system. Am J Orthod Dentofacial Orthop 2018; 155:117-126. [PMID: 30591155 DOI: 10.1016/j.ajodo.2017.07.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 07/01/2017] [Accepted: 07/01/2017] [Indexed: 11/22/2022]
Abstract
This case report describes the successful camouflage treatment to correct a moderate skeletal Class III malocclusion in a 19-year-old male cleft-palate patient. Early closure of the palate produced palatal scar tissue that inhibited midfacial growth, causing maxillary arch deficiency, severe maxillary crowding, and anterior and posterior crossbites. Combined surgical-orthodontic therapy would have been the preferred treatment of choice; however, the patient declined this option because of surgical risks and costs. Therefore, nonextraction camouflage treatment using a passive self-ligating bracket system was used. Treatment aims including expansion of the maxillary arch and correction of the anterior and posterior crossbites were achieved without the use of an additional maxillary arch expander or other auxiliary appliances. This treatment resulted in satisfying facial esthetics and a normal dental occlusion.
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Fleming PS, Cunningham SJ, Benson PE, Jauhar P, Millett D. Extraction of premolars for orthodontic reasons on the decline? A cross-sectional survey of BOS members. J Orthod 2018; 45:1-6. [PMID: 30192715 DOI: 10.1080/14653125.2018.1517470] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 08/24/2018] [Indexed: 10/28/2022]
Abstract
OBJECTIVE To obtain the opinion of British Orthodontic Society (BOS) members in relation to possible patterns of prescription of orthodontic extractions over the past 5-10 years and to relate any changes identified to treatment objectives, facial and smile aesthetics, and treatment strategies and adjuncts. DESIGN Cross-sectional questionnaire. SETTING On-line survey of BOS members. METHODS A 14-item on-line questionnaire was sent to orthodontic practitioners for completion. The questionnaire covered demographics, possible changes in frequency of prescribed extractions with specific information concerning the effect of patient age, and the influence of other factors including alternative approaches to space creation, evolving treatment mechanics, smile and facial aesthetics, and retention protocols. RESULTS Two hundred and eight responses were obtained with 95.6% (n = 199) reporting reduced extraction prescription over the last 5-10 years. Overall, 29.9% and 35.5% felt that their threshold for extractions had increased by more than 2 mm in adolescents and adults, respectively. Facial (n = 145; 69.7%) and smile (n = 127; 61.1%) aesthetics, and increased use of inter-proximal reduction (n = 102; 49%) were the factors most frequently reported as having either a moderate or major influence on this trend. Based on ordinal logistical regression analyses, no significant relationship was found between threshold for extractions and work setting (P = 0.675; O.R. 0.51; 95% CI: 0.39, 1.85) or level of orthodontic experience (P = 0.15; O.R. 1.02; 95% CI: 0.15, 1.05), although a higher threshold for extractions was more likely among users of conventional than self-ligating brackets (P = 0.001; O.R. 4.74; 95% CI: 1.95, 11.5). CONCLUSIONS A reduced tendency to prescribe orthodontic extractions over the past 5-10 years among British Orthodontic Society members was identified. Comparative clinical research exploring the relative merits of extraction and non-extraction approaches could be timely.
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Affiliation(s)
- Padhraig S Fleming
- a Barts and The London School of Medicine and Dentistry, Queen Mary University of London , London , UK
| | | | | | - Preeti Jauhar
- a Barts and The London School of Medicine and Dentistry, Queen Mary University of London , London , UK
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Shibasaki WMM, da Silva LH, Fuziy A, Triviño T, Costa ALF, Nahás-Scocate ACR. Evaluation of lower anterior dental changes in patients treated with self-ligating brackets. J Oral Biol Craniofac Res 2018; 9:183-186. [PMID: 31211032 DOI: 10.1016/j.jobcr.2018.06.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 06/21/2018] [Indexed: 10/28/2022] Open
Abstract
The aim of this study was to evaluate and compare changes in linear distance and inclination of lower incisors and canines and intercanine distance after a 30 months orthodontic treatment with self-ligating appliances. Seven patients were treated orthodontically with a Roth prescription passive self-ligating bracket. To perform the measurements and comparisons, CBCT scans were taken before the start of the orthodontic treatment (T1) and after a period of 30 months treatment (T2). The following measurements were performed: (1) the lower incisors and canines inclination in relation to the mandibular plane, (2) intercanine linear distance in millimeters and (3) linear distance in millimeters of the incisal and apical part of lower anterior teeth to a plane (POGM) passing through pogonion point and perpendicular to the mandibular plane. No significant difference were observed between T1 and T2 for canine inclination (p = 0.835), incisors inclination (p = 0.149), canine incisal distance to POGM (p = 0.423) and incisors incisal distance to POGM (p = 0.966), however canine apical distance (p = 0.049) and incisors apical distance (p = 0.002) to POGM was lower at T1 than at T2. The intercanine distance was significantly lower (p = 0.022) at T1 when compared to T2. The use of passive self-ligating brackets in orthodontic treatment to solve 4 mm tooth crowding were able to produce dental arch expansion by bodily tooth movement.
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Affiliation(s)
| | | | - Acácio Fuziy
- School of Dentistry, University of São Paulo City, São Paulo, Brazil
| | - Tarcila Triviño
- School of Dentistry, University of São Paulo City, São Paulo, Brazil
| | - André L F Costa
- School of Dentistry, University of São Paulo City, São Paulo, Brazil
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18
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Aras I, Unal I, Huniler G, Aras A. Root resorption due to orthodontic treatment using self-ligating and conventional brackets : A cone-beam computed tomography study. J Orofac Orthop 2018; 79:181-190. [PMID: 29651519 DOI: 10.1007/s00056-018-0133-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Accepted: 02/07/2018] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Purpose of the present study was to compare external root resorption (ERR) volumetrically in maxillary incisors induced by orthodontic treatment using self-ligating brackets (Damon Q, DQ) or conventional brackets (Titanium Orthos, TO) with the help of cone-beam computed tomography (CBCT). PATIENTS AND METHODS A sample of 32 subjects, with Angle Class I malocclusion and anterior crowding of 4-10 mm, was divided randomly into two groups: a DQ group, in which self-ligating DQ brackets with Damon archwires were used; and a TO group, in which conventional TO brackets with large Orthos archwires were applied. The study was conducted using CBCT scans taken before (T1), and near the end (9 months after the initiation of treatment; T2) of the orthodontic treatment. The extent of ERR was determined volumetrically using Mimics software. Changes in root volume were evaluated by repeated-measures analysis of variance as well as by paired and independent t-tests. RESULTS While significant differences were found between T1 and T2 for root volume in both groups (p < 0.05), there was no difference between the groups regarding the amount (mm3 or relative change) of ERR (p > 0.05). Maxillary central and lateral incisors showed similar volume loss (p > 0.05). Furthermore, the TO group showed a higher prevalence of palatinal and proximal slanted RR compared with the DQ group (p < 0.05). CONCLUSIONS It is not possible to suggest superiority of one bracket system over the other only considering root resorption pattern or amount. Higher incidence of slanted RR found in patients treated with the TO system warrants further research to identify possible specific causes.
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Affiliation(s)
- Isil Aras
- School of Orthodontics, Jacksonville University, 32211, Jacksonville, Florida, USA.
| | - Idil Unal
- Dentege ADSM, Sair Esref Bulvarı No:90, Alsancak, Izmir, Turkey
| | - Gencer Huniler
- Department of Orthodontics, Faculty of Dentistry, Ege University, 35080, Bornova, Izmir, Turkey
| | - Aynur Aras
- Department of Orthodontics, Faculty of Dentistry, Ege University, 35080, Bornova, Izmir, Turkey
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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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Romero-Delmastro A, Kadioglu O, Currier GF, Li J. Dentoalveolar effects of nonextraction orthodontic treatment of moderate crowding: A comparison of conventional, active self-ligating, and passive self-ligating bracket systems. J World Fed Orthod 2017. [DOI: 10.1016/j.ejwf.2017.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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23
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Differences between active and passive self-ligating brackets for orthodontic treatment. J Orofac Orthop 2017; 78:121-128. [DOI: 10.1007/s00056-016-0059-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 09/07/2016] [Indexed: 10/20/2022]
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Ibiapina DJ, Oltramari-Navarro PV, Navarro RL, Almeida MR, Mendonça DL, Conti AC. Assessment of Dental Arch Changes and Buccal Bone Thickness in Patients treated with Self-ligating Brackets. J Contemp Dent Pract 2016; 17:434-9. [PMID: 27484594 DOI: 10.5005/jp-journals-10024-1868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
AIMS To evaluate changes in transverse dimensions of upper arch and thickness of the buccal bone plate in patients undergoing orthodontic treatment during the leveling phase. MATERIALS AND METHODS Sixteen patients aged between 11 and 30 years, presenting with class I and II malocclusion, with minimum of 2 mm crowding treated without extraction, were divided into two groups: GI (n = 8), self-ligating brackets (Easyclip Aditek), and GII (n = 8), conventional preadjusted brackets (3M Unitek). The intercanines, interpremolar, and intermolar widths were measured in dental casts using a digital caliper, before (T1) and after 6 months of treatment (T2). Measurements of the thickness of the bone plate were performed by using cone-beam computed tomography (CBCT) scans and Dolphin three-dimensional program. Paired and nonpaired t tests were applied to analyze the results in and between the groups for the changes in the transversal arch dimensions and buccal bone thickness. RESULTS In all statistical tests, the significance level was set at 5%. A nonsignificant increase in transverse dimensions and a slight reduction on thickness of the buccal bone plate were observed in both groups. CONCLUSION The dimensional changes of transverse and thickness of the bone plate during the initial phase of treatment were similar, regardless of the bracket design. CLINICAL SIGNIFICANCE It should be noted that the bracket design does not influence the treatment course regarding transversal dimensions and buccal bone thickness.
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Affiliation(s)
- Deolino J Ibiapina
- Department of Orthodontics, University of North Parana Londrina, Parana, Brazil
| | | | | | - Marcio R Almeida
- Department of Orthodontics, University of North Parana Londrina, Parana, Brazil
| | - Daniela L Mendonça
- Department of Orthodontics, Universidade do Sagrado Coragao, Bauru, Sao Paulo, Brazil
| | - Ana Ccf Conti
- Professor, Department of Orthodontics, Universidade do Sagrado Coragao, Bauru, Sao Paulo, Brazil, Phone: +5514997957795, e-mail:
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Evaluation of maxillary arch dimensional and inclination changes with self-ligating and conventional brackets using broad archwires. Am J Orthod Dentofacial Orthop 2016; 149:830-7. [DOI: 10.1016/j.ajodo.2015.11.024] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 11/01/2015] [Accepted: 11/01/2015] [Indexed: 11/23/2022]
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26
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Lineberger MB, Franchi L, Cevidanes LHS, Huanca Ghislanzoni LT, McNamara JA. Three-dimensional digital cast analysis of the effects produced by a passive self-ligating system. Eur J Orthod 2016; 38:609-614. [PMID: 26843516 DOI: 10.1093/ejo/cjv089] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AIM To evaluate maxillary and mandibular dental arch changes induced by a passive self-ligating system by analysing digital dental casts. SUBJECTS AND METHODS A sample of 25 growing patients (16 females and 9 males, mean age 12.8 years) treated with passive self-ligating brackets was compared to a sample of 25 untreated controls (15 females and 10 males, mean age 13.4 years). Sixty three-dimensional points were digitised on the maxillary and mandibular pre- and post-treatment virtual models to evaluate differences in the transverse and antero-posterior arch dimensions and in the torque values of representative anterior and posterior teeth. Statistical comparisons were performed with independent sample t-tests with Holm-Bonferroni correction for multiple tests. RESULTS The greatest increments in arch widths were found at the maxillary and mandibular premolar level (ranging from 2.0 to 2.2mm) and they were associated with significant increases in maxillary and mandibular arch perimeters (2.3 and 2.5mm, respectively), and in buccal crown torque of the upper premolars (with adequate torque control of all other teeth). CONCLUSIONS The passive self-ligating system produced a modest but statistically significant widening of both maxillary and mandibular dental arches that were associated with significant net gains in maxillary and mandibular arch perimeters.
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Affiliation(s)
- Megan B Lineberger
- Graduate Orthodontic Program, The University of Michigan, Ann Arbor, MI, USA.,Private Practice, Huntersville, NC, USA
| | - Lorenzo Franchi
- Department of Surgery and Translational Medicine, Division of Orthodontics, The University of Florence, Italy.,Department of Orthodontics and Pediatric Dentistry, School of Dentistry, The University of Michigan, Ann Arbor, MI, USA
| | - Lucia H S Cevidanes
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, The University of Michigan, Ann Arbor, MI, USA
| | | | - James A McNamara
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, The University of Michigan, Ann Arbor, MI, USA, .,Department of Cell and Developmental Biology, School of Medicine, The University of Michigan, Ann Arbor, MI, USA.,Center for Human Growth and Development, The University of Michigan, Ann Arbor, MI, USA.,Private Practice, Ann Arbor, MI, USA
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An interview with Greg J. Huang. Dental Press J Orthod 2015; 20:32-6. [PMID: 26691967 PMCID: PMC4686742 DOI: 10.1590/2177-6709.20.6.032-036.int] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 08/27/2015] [Indexed: 11/25/2022] Open
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Comparison of third-order torque simulation with and without a periodontal ligament simulant. Am J Orthod Dentofacial Orthop 2015; 148:431-9. [DOI: 10.1016/j.ajodo.2015.04.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 04/01/2015] [Accepted: 04/01/2015] [Indexed: 11/21/2022]
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Capistrano A, Cordeiro A, Siqueira DF, Capelozza Filho L, Cardoso MDA, Almeida-Pedrin RRD. From conventional to self-ligating bracket systems: is it possible to aggregate the experience with the former to the use of the latter? Dental Press J Orthod 2015; 19:139-57. [PMID: 25162578 PMCID: PMC4296614 DOI: 10.1590/2176-9451.19.3.139-157.sar] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Introduction Orthodontics, just as any other science, has undergone advances in technology that
aim at improving treatment efficacy with a view to reducing treatment time,
providing patients with comfort, and achieving the expected, yet hardly attained
long-term stability. The current advances in orthodontic technology seem to
represent a period of transition between conventional brackets (with elastic
ligatures) and self-ligating brackets systems. Scientific evidence does not always
confirm the clear clinical advantages of the self-ligating system, particularly
with regard to reduced time required for alignment and leveling (a relatively
simple protocol), greater comfort for patients, and higher chances of performing
treatment without extractions - even though the number of extractions is more
closely related to patient's facial morphological pattern, regardless of the
technique of choice. Orthodontics has recently and brilliantly used bracket
individualization in compensatory treatment with a view to improving treatment
efficacy with lower biological costs and reduced treatment time. Objective This paper aims at presenting a well-defined protocol employed to produce a better
treatment performance during this period of technological transition. It explores
the advantages of each system, particularly with regards to reduced treatment time
and increased compensatory tooth movement in adult patients. It particularly
addresses compensable Class III malocclusions, comparing the system of
self-ligating brackets, with which greater expansive and protrusive tooth movement
(maxillary arch) is expected, with conventional brackets Capelozza Prescription
III, with which maintaining the original form of the arch (mandibular arch) with
as little changes as possible is key to yield the desired results.
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Anand M, Turpin DL, Jumani KS, Spiekerman CF, Huang GJ. Retrospective investigation of the effects and efficiency of self-ligating and conventional brackets. Am J Orthod Dentofacial Orthop 2015; 148:67-75. [DOI: 10.1016/j.ajodo.2014.12.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 12/01/2014] [Accepted: 12/01/2014] [Indexed: 10/23/2022]
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Celikoglu M, Bayram M, Nur M, Kilkis D. Mandibular changes during initial alignment with SmartClip self-ligating and conventional brackets: A single-center prospective randomized controlled clinical trial. Korean J Orthod 2015; 45:89-94. [PMID: 25798415 PMCID: PMC4367136 DOI: 10.4041/kjod.2015.45.2.89] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 07/16/2014] [Accepted: 08/01/2014] [Indexed: 11/12/2022] Open
Abstract
Objective To test the null hypothesis that SmartClip self-ligating brackets are more effective than conventional brackets for initial mandibular alignment and identify influential factors. Methods Fifty patients were randomly allocated to two equal treatment groups by using an online randomization program: self-ligating group (SmartClip brackets) and conventional group (Gemini brackets). The archwire sequence was standardized. Changes in anterior irregularity index, intercanine width, and intermolar width were assessed on plaster models at 8th and 16th weeks. Changes in incisor position and inclination were assessed on lateral cephalometric radiographs at 16 weeks. Intragroup and intergroup comparisons were performed with paired t-test and Student's t-test, respectively. Multiple linear regression was performed to identify variables affecting improvement in anterior ambiguity. Results Data of 46 patients were analyzed; those missing an appointment (n = 2) or showing bracket breakage (n = 2) were excluded. Incisor inclination (p < 0.05), intercanine width (p < 0.05), and intermolar width (p > 0.05) increased at 8 and 16 weeks in both the groups; no significant intergroup differences were noted (p > 0.05). Initial anterior irregularity index and intercanine width change were significantly associated with improvement in anterior irregularity (p < 0.001). Conclusions The null hypothesis was rejected. Bracket type has little effect on improvement in anterior ambiguity during initial mandibular alignment.
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Affiliation(s)
- Mevlut Celikoglu
- Department of Orthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Mehmet Bayram
- Department of Orthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey
| | - Metin Nur
- Department of Orthodontics, Faculty of Dentistry, Sifa University, Izmir, Turkey
| | - Dogan Kilkis
- Department of Orthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
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Wong JK, Romanyk DL, Toogood RW, Heo G, Carey JP, Major PW. The effect of perturbations on resistance to sliding in second-order moments comparing two different bracket types. JOURNAL OF DENTAL BIOMECHANICS 2014; 5:1758736014557500. [PMID: 25395993 PMCID: PMC4228925 DOI: 10.1177/1758736014557500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 09/29/2014] [Indexed: 11/22/2022]
Abstract
Orthodontic literature has shown all ligation methods to behave similarly in the clinical situation; however, the reasoning behind this still requires further investigation. A novel frictional device able to measure forces at the level of the bracket along with a custom perturbation device was used to investigate the effect of perturbations on resistance to sliding (RS) using conventional and passive ligated brackets. 150 3M Victory Series twins (0.022 slot) and 150 Damon Q brackets (0.022 slot) were tested using an 0.018 x 0.025 stainless steel wire for RS. There were 5 test groups consisting of equal numbers (n=30) representing combinations of high and low amplitude and frequency of perturbations along with a control. Second order angulation tested ranged from 0 to 6 degrees. Results for conventional brackets in the presence of perturbations at 0 degrees showed there was a statistically significant reduction (P<0.001) in RS when compared to controls. At 6 degrees, this difference (P<0.001) was seen in both high perturbation groups and one of the low perturbation groups. For passive ligated brackets, no statistically significant difference between groups was seen at 0 degrees. However, at 6 degrees high perturbation groups both resulted in statistically significant (P<0.001) reductions in RS when compared to controls. From this study it was concluded that passive ligated brackets have a lower RS when compared to conventional ligated brackets under all test conditions and angulations. Also, amplitude of perturbations has a larger role than frequency in reduction of RS values.
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Affiliation(s)
- Justin K Wong
- Department of Orthodontics, School of Dentistry, Faculty of Medicine & Dentistry, Edmonton Clinic Health Academy, University of Alberta, Edmonton, AB, Canada
| | - Dan L Romanyk
- Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada
| | - Roger W Toogood
- Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada
| | - Giseon Heo
- School of Dentistry, Faculty of Medicine & Dentistry, Edmonton Clinic Health Academy, University of Alberta, Edmonton, AB, Canada
| | - Jason P Carey
- Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada
| | - Paul W Major
- School of Dentistry, Faculty of Medicine & Dentistry, Edmonton Clinic Health Academy, University of Alberta, Edmonton, AB, Canada
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Fleming PS, Lee RT, Mcdonald T, Pandis N, Johal A. The timing of significant arch dimensional changes with fixed orthodontic appliances: data from a multicenter randomised controlled trial. J Dent 2013; 42:1-6. [PMID: 24269833 DOI: 10.1016/j.jdent.2013.11.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 11/02/2013] [Accepted: 11/13/2013] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVES To identify the timing of significant arch dimensional increases during orthodontic alignment involving round and rectangular nickel-titanium (NiTi) wires and rectangular stainless steel (SS). A secondary aim was to compare the timing of changes occurring with conventional and self-ligating fixed appliance systems. METHODS In this non-primary publication, additional data from a multicenter randomised trial initially involving 96 patients, aged 16 years and above, were analysed. The main pre-specified outcome measures were the magnitude and timing of maxillary intercanine, interpremolar, and intermolar dimensions. Each participant underwent alignment with a standard Damon (Ormco, Orange, CA) wire sequence for a minimum of 34 weeks. Blinding of clinicians and patients was not possible; however, outcome assessors and data analysts were kept blind to the appliance type during data analysis. RESULTS Complete data were obtained from 71 subjects. Significant arch dimensional changes were observed relatively early in treatment. In particular, changes in maxillary inter-first and second premolar dimensions occurred after alignment with an 0.014in. NiTi wire (P<0.05). No statistical differences in transverse dimensions were found between rectangular NiTi and working SS wires for each transverse dimension (P>0.05). Bracket type had no significant effect on the timing of the transverse dimensional changes. CONCLUSIONS Arch dimensional changes were found to occur relatively early in treatment, irrespective of the appliance type. Nickel-titanium wires may have a more profound effect on transverse dimensions than previously believed. CLINICAL SIGNIFICANCE On the basis of this research orthodontic expansion may occur relatively early in treatment. Nickel-titanium wires may have a more profound effect on transverse dimensions than previously believed.
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Affiliation(s)
- Padhraig S Fleming
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom.
| | - Robert T Lee
- Barts and The London School of Medicine and Dentistry, Barts Health Trust, United Kingdom
| | - Tom Mcdonald
- Barts and The London School of Medicine and Dentistry, Barts Health Trust, United Kingdom
| | - Nikolaos Pandis
- Private Practice, Corfu, Greece; University of Bern, Switzerland
| | - Ama Johal
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom
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Papageorgiou SN, Konstantinidis I, Papadopoulou K, Jager A, Bourauel C. Clinical effects of pre-adjusted edgewise orthodontic brackets: a systematic review and meta-analysis. Eur J Orthod 2013; 36:350-63. [DOI: 10.1093/ejo/cjt064] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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