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Ogura H, Numazaki K, Oyanagi T, Seiryu M, Ito A, Noguchi T, Ohori F, Yoshida M, Fukunaga T, Kitaura H, Mizoguchi I. Three-Dimensional Evaluation of Treatment Effects and Post-Treatment Stability of Maxillary Molar Intrusion Using Temporary Anchorage Devices in Open Bite Malocclusion. J Clin Med 2024; 13:2753. [PMID: 38792293 PMCID: PMC11121792 DOI: 10.3390/jcm13102753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 05/01/2024] [Accepted: 05/05/2024] [Indexed: 05/26/2024] Open
Abstract
Background: We investigated treatment outcomes and post-treatment stability in 10 patients with an anterior open bite and nonsurgical orthodontics. Methods: The patients underwent maxillary molar intrusion using temporary anchorage devices (TADs) to deepen the overbite due to mandibular autorotation. Lateral cephalograms and dental cast models were obtained before treatment (T0), immediately after it (T1), and >1 year after it (T2). Skeletal and dental cephalometric changes and three-dimensional movements of the maxillary dentitions were evaluated. Results: At T0, cephalometric analysis indicated that patients had skeletal class I with tendencies for a class II jaw relationship and a skeletal open bite. During active treatment (T0 to T1), the maxillary first molar intruded by 1.6 mm, the mandibular first molar extruded by 0.3 mm, the Frankfort-mandibular plane angle decreased by 1.1°, and the overbite increased by 4.1 mm. Statistically significant changes were observed in the amount of vertical movement of the maxillary first molar, Frankfort-mandibular plane angle, and overbite. Three-dimensional (3D) dental cast analysis revealed that the maxillary first and second molars intruded, whereas the anterior teeth extruded, with the second premolar as an infection point. In addition, the maxillary molar was tipped distally by 2.9° and rotated distally by 0.91°. Statistically significant changes were observed in the amount of vertical movement of the central incisor, lateral incisor, canine and first molar, and molar angulation. From T1 to T2, no significant changes in cephalometric measurements or the 3D position of the maxillary dentition were observed. The maxillary and mandibular dentitions did not significantly change during post-treatment follow-up. Conclusions: Maxillary molar intrusion using mini-screws is an effective treatment for open bite correction, with the achieved occlusion demonstrating 3D stability at least 1 year after treatment.
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Affiliation(s)
| | - Kento Numazaki
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan; (H.O.); (T.O.); (M.S.); (A.I.); (T.N.); (F.O.); (M.Y.); (T.F.); (H.K.); (I.M.)
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Ellabban I, Germain S, Jenkins G, Paterson A. The Stability of Anterior Open Bite Closure After Bimaxillary Osteotomy. J Maxillofac Oral Surg 2023; 22:893-899. [PMID: 38105834 PMCID: PMC10719434 DOI: 10.1007/s12663-021-01642-w] [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: 02/24/2021] [Accepted: 09/01/2021] [Indexed: 10/20/2022] Open
Abstract
Introduction The aim of this study was to evaluate the long-term success rate of combined surgical-orthodontic therapy of skeletal anterior open bite. Materials and Methods A total of 11 patients with an anterior open bite treated with a combined surgical-orthodontic therapy were retrospectively analysed via lateral cephalometric radiographs and models before treatment, 7-10 days after surgery (T1), one year post-operatively (T2) and two years post-operatively (T3). Results Ten patients continued to experience a positive overbite at T2. This decreased to 8 at T3. Three patients experienced relapse and had a negative overbite at T3. The average pre-treatment overbite was greater in the positive overbite group compared to the relapse group. Spearman's correlation analysis revealed a correlation between preoperative maxilla-mandibular plane angle (MMPA) with the overall change in overbite. Friedman's test followed by Bonferroni post-hoc analysis was carried out to identify any statistical significance. Conclusion In conclusion, combined surgical-orthodontic treatment achieves good results for anterior open bite. Patients with a high pre-operative MMPA have a higher risk of relapse. Lower anterior facial height ratio to total anterior facial height (LAFH/TAFH) and the amount of impaction do not significantly contribute to the risk of relapse. Long-term stability of overbite for anterior open bite patients should be around 75%.
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Affiliation(s)
- Islam Ellabban
- Oral and Maxillofacial Surgery Department, North Cumbria Integrated Care NHS Trust, Cumberland Infirmary, Newton Street, Carlisle, Cumbria CA2 7HY UK
| | - Sarah Germain
- Orthodontic Department, North Cumbria Integrated Care NHS Trust, Cumberland Infirmary, Newton Street, Carlisle, UK
| | - Glyndwr Jenkins
- Oral and Maxillofacial Surgery Department, Newcastle upon Tyne NHS Trust, Newcastle upon Tyne, UK
| | - Anthony Paterson
- Oral and Maxillofacial Surgery Department, North Cumbria Integrated Care NHS trust, Carlisle, UK
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Suh H, Garnett BS, Mahood K, Boyd RL, Oh H. Short-term stability of anterior open bite treatment with clear aligners in adults. Am J Orthod Dentofacial Orthop 2023; 164:774-782. [PMID: 37552148 DOI: 10.1016/j.ajodo.2023.05.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 05/01/2023] [Accepted: 05/01/2023] [Indexed: 08/09/2023]
Abstract
INTRODUCTION This study aimed to examine the stability of anterior open bite (AOB) treatment with clear aligners. METHODS This retrospective cohort study included 52 adult AOB patients (aged >18 years; 15 males, 37 females) who underwent nonextraction clear aligner treatment and were at least 1 year posttreatment. Eleven cephalometric measurements were evaluated at pretreatment, end of active treatment, and at least 1-year posttreatment. Overbite change, the primary outcome variable, and other cephalometric changes during treatment and retention were calculated, and repeated measures analysis of variance were performed. Stepwise multiple regression was used to make a prediction equation for open bite relapse. RESULTS The mean retention period was 2.1 ± 1.1 years. The mean change in overbite during treatment was 3.3 ± 1.5 mm; 6% of patients presented relapse at least 1 year after treatment completion. The mean change of overbite (0.2 ± 0.5 mm) during the retention period was not statistically significant (P = 0.59). None of the 11 cephalometric measurements showed significant change during the retention period. The prediction model showed that only the coefficient for a tongue posture issue at the initial examination was statistically significant. CONCLUSIONS AOB was successfully corrected in all 52 patients using only clear aligners with no additional adjunctive aids such as microimplants. When retained with maxillary and mandibular fixed retainers and maxillary and mandibular vacuum-formed retainers, there was no significant change in cephalometric measurements during the short-term retention period.
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Affiliation(s)
- Heeyeon Suh
- Department of Orthodontics, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, Calif
| | - Bella Shen Garnett
- Department of Orthodontics, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, Calif; Private practice, San Francisco, Calif
| | - Kimberly Mahood
- Department of Orthodontics, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, Calif
| | - Robert L Boyd
- Department of Orthodontics, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, Calif
| | - Heesoo Oh
- Department of Orthodontics, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, Calif.
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Orthodontic management of a horizontally impacted maxillary incisor in an adolescent patient. Am J Orthod Dentofacial Orthop 2023; 163:126-136. [PMID: 36192324 DOI: 10.1016/j.ajodo.2021.06.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 06/01/2021] [Accepted: 06/01/2021] [Indexed: 12/27/2022]
Abstract
Horizontal maxillary incisor impaction is not common, but it affects facial esthetics, phonetics, and the patient's self-esteem. Therefore, it is necessary to manage this problem as early as possible. This case report presents a patient with an unerupted maxillary left central incisor combined with anterior and left posterior crossbite, edge-to-edge overbite on the right and left anterior open bite, low smile line, and mild skeletal Class III discrepancy. The treatment consisted of 3 stages: (1) maxillary expansion and sufficient space creation for the impacted tooth; (2) surgical exposure by closed-eruption technique; and (3) induced eruption of impaction. The treatment outcome was highly favorable. Maxillary impaction erupted in the proper position with a normal clinical crown height and consonant gingival line with the adjacent teeth. Maxillary and mandibular teeth had normal and stable occlusion. The 3-year follow-up demonstrated an esthetically functional outcome after orthodontically induced tooth eruption. This treatment required a good treatment plan by the orthodontist to obtain satisfactory results.
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Paoloni V, Lugli L, Danesi C, Cozza P. Mandibular morphometric analysis in open bite early treatment relapse subjects: a retrospective observational pilot study. BMC Oral Health 2022; 22:555. [PMID: 36456943 PMCID: PMC9714178 DOI: 10.1186/s12903-022-02546-y] [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] [Received: 04/11/2022] [Accepted: 10/30/2022] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND The purpose of this retrospective study was to evaluate the mandibular shape differences between a group of success and a group of failure Anterior Open Bite (AOB) malocclusion early orthodontic treatment in growing subjects, in order to identify mandibular features of relapse. METHODS Twenty three patients (7 males, 16 females, 9.3 years ±1,5 years) were enrolled from the Department of Orthodontics at the University of Rome Tor Vergata. Inclusion criteria were: white ancestry, overbite < 0 mm, mixed dentition phase, end-to-end or Class I molar relationship, first skeletal class assessed on lateral cephalograms (0° < ANB < 4°), cervical skeletal maturation CS1-CS2, no previous orthodontic treatment, no congenital diseases. Pre-treatment (T1) lateral cephalograms were acquired. Each patient underwent early orthodontic treatment with Rapid Maxillary Expander (RME) and Bite Block (BB) or Quad-Helix Crib (QHC) until open bite correction. Radiographic records were recollected at T2 (permanent dentition, skeletal cervical maturation CS3-CS4). Mean interval time T2-T1 was 4.2 years ±6 months. According to treatment stability, a Relapse Group (RG 11 patients, 3 M, 8F; 13.7 years ±8 months, 7 subjects treated with RME/BB, 4 with QH/C) and a Success Group (SG, 12 patients, 4 M, 8F; 13.4 ± 10 months, 7 subjects treated with QH/C, 5 with RME/BB) were identified. On the lateral radiographs the mandibular length (Co-Gn), the inferior gonial angle (NGo^GoMe) and the antegonial notch depth (AND) were analyzed. Then the mandibular Geometric Morphometric analysis (GMM) was applied. Intergroup statistically significant differences were found using student's t-tests. Procrustes analysis and principal component analysis (PCA) were performed for the GMM. RESULTS At T1 no statistically significant differences were found between RG and SG, however higher values of antegonial notch depth were found in RG. T2-T1 comparison showed in RG statistically significant increases in Co-Gn (p = 0.04), NGo^GoMe angle (p = 0.01) and antegonial notch depth (p = 0,04). PC1 confirmed the increase in the antegonial notch depth in RG when compared to SG at T2. CONCLUSIONS The increased antegonial notch depth associated with the increased mandibular length and the increased gonial angle could be responsible of relapse of early orthodontic treatment in open bite growing subjects.
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Affiliation(s)
- Valeria Paoloni
- grid.6530.00000 0001 2300 0941Department of Systems Medicine, University of Rome Tor Vergata, Viale Oxforx, 81, 00133 Rome, Italy
| | - Letizia Lugli
- grid.6530.00000 0001 2300 0941Department of Systems Medicine, University of Rome Tor Vergata, Viale Oxforx, 81, 00133 Rome, Italy
| | - Carlotta Danesi
- grid.6530.00000 0001 2300 0941Department of Systems Medicine, University of Rome Tor Vergata, Viale Oxforx, 81, 00133 Rome, Italy
| | - Paola Cozza
- grid.6530.00000 0001 2300 0941Department of Systems Medicine, University of Rome Tor Vergata, Viale Oxforx, 81, 00133 Rome, Italy ,Department of Dentistry UNSBC, Tirana, Albania ,UniCamillus-Saint Camillus International University of Health Sciences, Rome, Italy
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Nonsurgical Orthodontic Treatment of a Severe Open Bite Case Using Miniscrews with Modified Multiloop Edgewise Arch Wire Technique. Case Rep Dent 2022; 2022:1844167. [PMID: 36157202 PMCID: PMC9499781 DOI: 10.1155/2022/1844167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 08/18/2022] [Indexed: 12/01/2022] Open
Abstract
Skeletal open bite is one of the most challenging malocclusions to treat and maintain due to the difficulty and instability of correction. Although a combination of orthodontic treatment and orthognathic surgery may be the ideal approach in most cases, the complications, risks, and costs of surgery have sparked an interest in alternative treatment options that use temporary anchorage devices to achieve orthognathic-like effects. Adult patients can be treated without the need for special compliance using temporary anchorage devices such as miniscrews. This case report demonstrates a goal-oriented strategy for nonsurgical treatment of a complex skeletal open bite malocclusion in an adult patient using miniscrews and a modified multiloop edgewise arch wire (MEAW) technique, with the results evaluated clinically and cephalometrically.
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Teixeira RAN, Ferrari Junior FM, Garib D. Influence of rapid maxillary expansion in the stability of anterior open bite treatment. Clin Oral Investig 2022; 26:6371-6378. [PMID: 35915261 DOI: 10.1007/s00784-022-04592-w] [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: 02/12/2022] [Accepted: 06/20/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVES This study aimed to compare the stability of anterior open bite (AOB) in patients treated with and without rapid maxillary expansion (RME) before fixed palatal crib (PC) therapy in the mixed dentition. MATERIAL AND METHODS Expansion/palatal crib group (EPC) was comprised of 25 patients (10 male, 15 female, mean initial age of 7.8 years) with AOB treated with RME before PC therapy. Palatal crib group (PC) included 25 patients with AOB (10 male, 15 female, mean initial age of 8.0 years) treated only with PC therapy. Lateral cephalograms were analyzed at pre-treatment (T0), after PC therapy (T1), and 3 years after PC removal (T2) in both groups. AOB relapse was considered when a negative overbite was observed at T2. Intergroup comparisons of interphase changes were performed using t and Mann-Whitney tests (p < 0.05). RESULTS Treatment and post-treatment alterations showed similar changes in both groups for all cephalometric variables. Overall changes from T0 to T2 were similar between the groups except for the maxillary incisors that tipped lingually in PC group (1.PP = - 3.37°) and labially in EPC group (1.PP = 1.76°). The frequency of AOB relapse was 8% and 4% in the EPC and PC groups, respectively. Treatment time in the EPC group (9.7 months) was shorter (p = 0.024) when compared to the PC group (11.0 months). CONCLUSIONS In the mixed dentition, stability of AOB treated with RME before fixed PC therapy was similar to PC therapy alone. However, treatment time with fixed PC was slightly shorter in the group treated with RME. CLINICAL RELEVANCE This study aims to understand if RME performed previously to fixed palatal crib contributes to the index of stability of AOB treatment in the mixed dentition.
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Affiliation(s)
- Rodrigo Almeida Nunes Teixeira
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, São Paulo, 17012-901, Brazil
| | - Flávio Mauro Ferrari Junior
- Interceptive Orthodontics Post-Graduate Program, Profis and Private Practice, R. Silvio Marchione, 3-55, Bauru, São Paulo, 17012-230, Brazil
| | - Daniela Garib
- Department of Orthodontics, Bauru Dental School and Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, São Paulo, 17012-901, Brazil.
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Nojima LI, Tomé Barreto BC, Amaral Vargas EO, Starling CR, da Cunha Gonçalves Nojima M. A clinical approach to managing open-bite malocclusion associated with severe crowding. Am J Orthod Dentofacial Orthop 2022; 162:122-134. [DOI: 10.1016/j.ajodo.2021.01.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/01/2021] [Accepted: 01/01/2021] [Indexed: 11/30/2022]
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Arnett GW, D'Agostino A, Grendene E, McLaughlin RP, Trevisiol L. Combined orthodontic and surgical open bite correction. Angle Orthod 2022; 92:431-445. [PMID: 35293981 DOI: 10.2319/123121-959.1] [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: 12/01/2021] [Accepted: 01/01/2022] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To present a clinical description of the team's treatment techniques. MATERIALS AND METHODS In Part 1, 30 patients underwent segmental maxillary orthodontics, multisegment Le Fort I, and bilateral sagittal osteotomies of the mandible. Part 1 reported excellent occlusal stability at a mean follow-up of 49.43 months (range, 36-92 months). Cases presented in Part 2 were selected based on availability of excellent technique photographs. The same techniques described in Part 2 cases were used on all Part 1 patients. RESULTS The coordination of arch widths and forms, overbite, overjet, and maxillary curve of Spee corrections were stable using the team protocols for orthodontic and surgical treatment. CONCLUSIONS In the study group, long-term three-dimensionally stable occlusal results were achieved. To duplicate these results, specific orthodontic preparation, intraoperative surgical steps, and postsurgical steps must be carefully planned and executed. These steps are described in this article, Part 2.
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Arnett GW, Trevisiol L, Grendene E, McLaughlin RP, D'Agostino A. Combined orthodontic and surgical open bite correction. Angle Orthod 2022; 92:161-172. [PMID: 34986216 PMCID: PMC8887413 DOI: 10.2319/101921-779.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 11/01/2021] [Indexed: 11/14/2023] Open
Abstract
OBJECTIVES To examine the stability of combined surgical and orthodontic bite correction with emphasis on open-bite closure. All study patients were treated with strict and consistent orthodontic and surgical protocols. MATERIALS AND METHODS Study inclusion required all patients to have anterior open bites, maxillary accentuated curve of Spee, 36-month minimum follow-up, and no temporomandibular joint pathology. Thirty patients met the inclusion/exclusion criteria. Importantly, segmental upper arch orthodontic preparation (performed by EG) was used. Surgery consisted of a multisegment Le Fort I (MSLFI) combined with a bilateral sagittal osteotomies (BSSO). Surgery was performed (by ADA and LT) at the Department of Dentistry and Maxillofacial Surgery of the University of Verona, Italy. RESULTS The long-term open bite and overjet relapse were not statistically significant. The mean transverse relapse of the upper and lower molars was statistically significant. Of great importance, the upper and lower arch widths narrowed together, maintaining intercuspation of the posterior dentition which prevented anterior open bites from developing. CONCLUSIONS This study revealed stability of three-dimensional occlusal correction including anterior open bite. Stable open bite closure was achieved by using rigid protocols for orthodontic preparation, surgical techniques, surgical follow-up, and orthodontic finishing.
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Ramon Pujols SC, Nogueira CQ, Reis RS, Fonçatti CF, Castanha Henriques JF, Janson G. Stability of Class II malocclusion treatment with the distal jet followed by fixed appliances. Am J Orthod Dentofacial Orthop 2020; 158:363-370. [PMID: 32709576 DOI: 10.1016/j.ajodo.2019.08.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 08/01/2019] [Accepted: 08/01/2019] [Indexed: 11/28/2022]
Abstract
INTRODUCTION This retrospective study aimed to assess the stability of Class II malocclusion treatment with the distal jet, followed by fixed appliances. METHODS Seventy-five cephalograms of 30 subjects were divided into 2 groups. The treated group consisted of 15 patients who were evaluated at the pretreatment, posttreatment, and long-term posttreatment stages. The control group consisted of 15 subjects with normal occlusion, comparable to the experimental group at the long-term posttreatment period. Intergroup comparison of posttreatment changes was evaluated with t tests. RESULTS In the long-term posttreatment period, there was no significant change in the anteroposterior position of the maxilla and mandible to the cranial base. The lower anterior face height had a significantly smaller increase in the treated than in the control group. The maxillary molars in the treated group had significantly smaller vertical development, and the mandibular incisors had significantly greater labial tipping and protrusion than the control group. The treatment produced significant improvement in molar relationship and reduction of overbite and overjet, which remained stable in the long-term posttreatment period. There was greater upper lip protrusion in the experimental than in the control group in the long-term posttreatment period. CONCLUSIONS Treatment of Class II malocclusions with the distal jet, followed by fixed appliances, showed good long-term stability in molar relationship, overbite, and overjet.
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Affiliation(s)
| | | | - Rachelle Simões Reis
- Department of Orthodontics. Bauru Dental School, University of São Paulo, Bauru, Brazil
| | | | | | - Guilherme Janson
- Department of Orthodontics. Bauru Dental School, University of São Paulo, Bauru, Brazil
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Chang J, Mehta S, Chen PJ, Upadhyay M, Yadav S. Correction of open bite with temporary anchorage device-supported intrusion. APOS TRENDS IN ORTHODONTICS 2019. [DOI: 10.25259/apos_101_2019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
This case report describes the use of temporary anchorage device (TAD)-supported molar intrusion to correct anterior open bite and achieve overjet correction. A 13-year-old female presented with a Class II skeletal profile, with increased overjet and anterior open bite. She was treated with a combination of intrusion of the posterior teeth and extrusion of anterior teeth. The intrusion of maxillary posterior teeth was done with a palatal TAD and a transpalatal arch on the upper first molars to control the transverse dimension. The patient’s mandibular plane angle was maintained with this treatment approach.
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Affiliation(s)
- Joy Chang
- Private Practice, CA, United States,
| | - Shivam Mehta
- Department of Orthodontics, Division of Orthodontics, University of Connecticut Health Center, Farmington, CT, United States,
| | - Po-Jung Chen
- Department of Orthodontics, Division of Orthodontics, University of Connecticut Health Center, Farmington, CT, United States,
| | - Madhur Upadhyay
- Department of Orthodontics, Division of Orthodontics, University of Connecticut Health Center, Farmington, CT, United States,
| | - Sumit Yadav
- Department of Orthodontics, Division of Orthodontics, University of Connecticut Health Center, Farmington, CT, United States,
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Foosiri P, Changsiripun C. Stability of anterior open bite in permanent dentition treated using extraction or non-extraction methods: A systematic review and meta-analysis of each method. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.odw.2018.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Pimchanok Foosiri
- Department of Orthodontics, Faculty of Dentistry, Chulalongkorn University, Henri-Dunant Road , Bangkok Thailand
| | - Chidsanu Changsiripun
- Department of Orthodontics, Faculty of Dentistry, Chulalongkorn University, Henri-Dunant Road , Bangkok Thailand
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Ooi K, Inoue N, Matsushita K, Yamaguchi HO, Mikoya T, Kawashiri S, Tei K. Comparison of Postoperative Stability Between BSSRO and Le Fort 1 Osteotomy with BSSRO in Skeletal Class III Malocclusion with Severe Open Bite. J Maxillofac Oral Surg 2019; 19:591-595. [PMID: 33071508 DOI: 10.1007/s12663-019-01300-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 10/12/2019] [Indexed: 10/25/2022] Open
Abstract
Introduction We aimed to investigate postoperative stability after orthognathic surgery in patients with skeletal class III malocclusion with severe open bite by comparison between bilateral sagittal splitting osteotomy (BSSRO) and BSSRO with Le Fort 1 osteotomy. Materials and methods Seventeen patients with skeletal class III malocclusion with severe open bite who were needed more than 6 degree counterclockwise rotation of distal segment by only BSSRO in preoperative cephalometric prediction. The subjects were divided into group A, where 9 patients were treated by BSSRO, and group B, where 8 patients were treated by BSSRO with Le Fort 1 osteotomy. Patient's characteristics of age, gender, preoperative over jet (OJ) and over bite (OB) were not found to be significantly different between the two groups. Counterclockwise rotation of distal segment in preoperative cephalometric prediction by only BSSRO was not found to be significantly different between group A of 7.6 (6-10.6) degree and group B of 9 (6-13) degree. The amount of rotation was reduced to 5.4 (3-10) degree by bimaxillary surgery using BSSRO and Le Fort 1 osteotomy in group B. OJ and OB were measured as occlusal stability factor. Distance between ANS-to-PNS plane and the edge of upper incisor (NF-U1Ed), and distance between Menton and edge of lower incisor (Me-L1Ed) were measured as skeletal stability factor using cephalometric analysis. These lengths were measured at pre-surgery (T0), 2 weeks after surgery (T1) and 1 year after surgery (T2), and these differences between the two groups were statistically analyzed. Results OJ and OB kept a good relation at any experimental periods. The change of Me-L1Ed was significantly larger in group A (1.21 mm at T0-T1, 1.02 mm at T0-T2) than in group B (0.14 mm at T0-T1, 0.16 mm at T0-T2). The change of NF-U1Ed was not significantly different between group A (1.07 mm at T0-T1, 0.57 mm at T0-T2) and group B (0.51 mm at T0-T1, - 0.05 mm at T0-T2). Conclusion In case with more than 6 degree counterclockwise rotation of distal segment, skeletal stability was better after bimaxillary surgery than only BSSRO; however, OJ and OB kept a good relation.
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Affiliation(s)
- Kazuhiro Ooi
- Oral and Maxillofacial Surgery, Department of Oral Patho-biological Science, Graduate School of Dental Medicine, Hokkaido University, Kita 13 Nishi 7 Kita-ku, Sapporo, Hokkaido 060-8586 Japan.,Department of Oral and Maxillofacial Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa 920-8641 Japan
| | - Nobuo Inoue
- Gerodontology, Department of Oral Health Science, Graduate School of Dental Medicine, Hokkaido University, Kita 13 Nishi 7 Kita-ku, Sapporo, Hokkaido 060-8586 Japan
| | - Kazuhiro Matsushita
- Oral and Maxillofacial Surgery, Department of Oral Patho-biological Science, Graduate School of Dental Medicine, Hokkaido University, Kita 13 Nishi 7 Kita-ku, Sapporo, Hokkaido 060-8586 Japan
| | - Hiro-O Yamaguchi
- Oral and Maxillofacial Surgery, Department of Oral Patho-biological Science, Graduate School of Dental Medicine, Hokkaido University, Kita 13 Nishi 7 Kita-ku, Sapporo, Hokkaido 060-8586 Japan
| | - Tadashi Mikoya
- Oral and Maxillofacial Surgery, Department of Oral Patho-biological Science, Graduate School of Dental Medicine, Hokkaido University, Kita 13 Nishi 7 Kita-ku, Sapporo, Hokkaido 060-8586 Japan
| | - Shuichi Kawashiri
- Department of Oral and Maxillofacial Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa 920-8641 Japan
| | - Kanchu Tei
- Oral and Maxillofacial Surgery, Department of Oral Patho-biological Science, Graduate School of Dental Medicine, Hokkaido University, Kita 13 Nishi 7 Kita-ku, Sapporo, Hokkaido 060-8586 Japan
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Zupnik JT, Ioshida M, Yatabe M, Ruellas ACO, Gomes LR, Aronovich S, Benavides E, Edwards SP, Paniagua B, Cevidanes LHS. Three-dimensional analysis of condylar changes in surgical correction for open bite patients with skeletal class II and class III malocclusions. Int J Oral Maxillofac Surg 2019; 48:739-745. [PMID: 30712988 DOI: 10.1016/j.ijom.2019.01.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 11/20/2018] [Accepted: 01/08/2019] [Indexed: 11/17/2022]
Abstract
The aim of this study was to quantify three-dimensional condylar displacements as a result of two-jaw surgery for open bite correction in patients with skeletal class II and class III malocclusion. Pre-surgical (T1) and post-surgical (T2) cone beam computed tomography scans were taken for 16 patients with skeletal class II (mean age 22.3±9.47years) and 14 patients with skeletal class III (mean age 25.6±6.27years). T2 scans were registered to T1 scans at the cranial base. Translational and rotational condylar changes were calculated by x,y,z coordinates of corresponding landmarks. The directions and amounts of condylar displacement were assessed by intra- and inter-class Mann-Whitney U-test or t-test. Class II patients presented significantly greater amounts of lateral (P=0.002) and inferior (P=0.038) translation than class III patients. The magnitudes of condylar translational displacements were small for both groups. Skeletal class III patients had predominantly medial (P=0.024) and superior (P=0.047) condylar translation. Skeletal class II patients presented greater condylar counterclockwise pitch (P=0.007) than class III patients. Two-jaw surgery for the correction of open bite led to different directions and amounts of condylar rotational displacement in patients with skeletal class II compared to class III malocclusion, with greater rotational than translational displacements.
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Affiliation(s)
- J T Zupnik
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - M Ioshida
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - M Yatabe
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, MI, USA.
| | - A C O Ruellas
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - L R Gomes
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - S Aronovich
- Department of Oral and Maxillofacial Surgery, University of Michigan, Ann Arbor, MI, USA
| | - E Benavides
- Department of Periodontics and Oral Medicine, University of Michigan, Ann Arbor, MI, USA
| | - S P Edwards
- Department of Oral and Maxillofacial Surgery, University of Michigan, Ann Arbor, MI, USA
| | | | - L H S Cevidanes
- Department of Orthodontics and Pediatric Dentistry, University of Michigan, Ann Arbor, MI, USA
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16
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Kato C, Ono T. Anterior open bite due to temporomandibular joint osteoarthrosis with muscle dysfunction treated with temporary anchorage devices. Am J Orthod Dentofacial Orthop 2018; 154:848-859. [DOI: 10.1016/j.ajodo.2017.06.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 06/01/2017] [Accepted: 06/01/2017] [Indexed: 10/27/2022]
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17
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Garnett BS, Mahood K, Nguyen M, Al-Khateeb A, Liu S, Boyd R, Oh H. Cephalometric comparison of adult anterior open bite treatment using clear aligners and fixed appliances. Angle Orthod 2018; 89:3-9. [PMID: 30280928 DOI: 10.2319/010418-4.1] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To compare fixed appliances and clear aligner therapy in correcting anterior open bite and in controlling the vertical dimension in adult patients with hyperdivergent skeletal patterns. MATERIALS AND METHODS In this retrospective study, two treatment groups of adult (≥18 years old) hyperdivergent patients (mandibular plane angles of ≥38°) with anterior open bites were included: 17 fixed appliance patients and 36 clear aligner patients. Thirteen cephalometric measurements representing the vertical dimension were reported for each group. A two-sample t-test was used to assess differences in changes in mandibular plane angle and overbite between the two treatment groups. RESULTS There were no statistical differences found in the magnitude of overbite correction and the changes in any of the cephalometric measurements for vertical control. The clear aligner group showed a slightly greater amount of lower incisor extrusion ( P = .009). The main mechanism of open bite correction was similar between the two treatment groups and was accomplished through retroclination of the upper and lower incisors while maintaining the vertical position of the upper and lower molars. CONCLUSIONS Cephalometric comparison of anterior open bite correction and changes in the mandibular plane angle associated with use of clear aligners and fixed appliances did not demonstrate statistically significant differences in adult hyperdivergent patients.
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18
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Moshiri S, Araújo EA, McCray JF, Thiesen G, Kim KB. Cephalometric evaluation of adult anterior open bite non-extraction treatment with Invisalign. Dental Press J Orthod 2018; 22:30-38. [PMID: 29160342 PMCID: PMC5730134 DOI: 10.1590/2177-6709.22.5.030-038.oar] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 04/18/2017] [Indexed: 11/21/2022] Open
Abstract
Objective: The purpose of this study was to evaluate, by means of cephalometric appraisal, the vertical effects of non-extraction treatment of adult anterior open bite with clear aligners (Invisalign system, Align Technology, Santa Clara, CA, USA). Methods: Lateral cephalograms of 30 adult patients with anterior open bite treated using Invisalign (22 females, 8 males; mean age at start of treatment: 28 years and 10 months; mean anterior open bite at start of treatment: 1.8 mm) were analyzed. Pre- and post-treatment cephalograms were traced to compare the following vertical measurements: SN to maxillary occlusal plane (SN-MxOP), SN to mandibular occlusal plane (SN-MnOP), mandibular plane to mandibular occlusal plane (MP-MnOP), SN to mandibular plane (SN-MP), SN to palatal plane (SN-PP), SN to gonion-gnathion plane (SN-GoGn), upper 1 tip to palatal plane (U1-PP), lower 1 tip to mandibular plane (L1-MP), mesiobuccal cusp of upper 6 to palatal plane (U6-PP), mesiobuccal cusp of lower 6 to mandibular plane (L6-MP), lower anterior facial height (LAFH), and overbite (OB). Paired t-tests and descriptive statistics were utilized to analyze the data and assess any significant changes resulting from treatment. Results: Statistically significant differences were found in overall treatment changes for SN-MxOP, SN-MnOP, MP-MnOP, SN-MP, SN-GoGn, L1-MP, L6-MP, LAFH, and OB. Conclusions: The Invisalign system is a viable therapeutic modality for non-extraction treatment of adult anterior mild open bites. Bite closure was mainly achieved by a combination of counterclockwise rotation of the mandibular plane, lower molar intrusion and lower incisor extrusion.
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Affiliation(s)
- Shuka Moshiri
- Saint Louis University, Department of Orthodontics (Saint Louis, USA)
| | | | - Julie F McCray
- Saint Louis University, Department of Orthodontics (Saint Louis, USA)
| | - Guilherme Thiesen
- Saint Louis University, Department of Orthodontics (Saint Louis, USA)
| | - Ki Beom Kim
- Saint Louis University, Department of Orthodontics (Saint Louis, USA)
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19
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Kim DH, Sung SJ. Nonsurgical correction of a Class III skeletal anterior open-bite malocclusion using multiple microscrew implants and digital profile prediction. Am J Orthod Dentofacial Orthop 2018; 154:283-293. [PMID: 30075930 DOI: 10.1016/j.ajodo.2017.03.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 02/01/2017] [Accepted: 02/01/2017] [Indexed: 10/28/2022]
Abstract
A 20-year-old woman had a severe anterior skeletal open bite and a moderate skeletal Class III relationship with a prognathic mandible and a straight profile. She declined surgery. However, molar intrusion in a Class III patient with a straight profile can cause forward mandibular rotation and deterioration of the profile to a concave pattern. We used digital facial profile prediction software to determine whether the orthodontic compensation treatment would be acceptable to the patient. The final treatment plan consisted of extraction of the third molars, maxillary molar intrusion, and total distalization of the mandibular dentition with multiple microscrew implants. The patient cooperated with the use of Class III interarch elastics. The active treatment period was 20 months. Proper overbite and overjet, good occlusion, and an acceptable facial profile were achieved.
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Affiliation(s)
- Do-Hoon Kim
- Private practice, Seoul, Korea; Division of Orthodontics, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
| | - Sang-Jin Sung
- Division of Orthodontics, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea
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20
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Cassis MA, de Almeida RR, Janson G, Aliaga-Del Castillo A, de Almeida MR. Stability of anterior open bite treatment with bonded spurs associated with high-pull chincup. Orthod Craniofac Res 2018. [PMID: 29537699 DOI: 10.1111/ocr.12223] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To evaluate the stability of anterior open bite (AOB) treatment with bonded spurs associated with high-pull chincup (BS/HPCC). METHODS The experimental group consisted of 25 Class I AOB patients (15 female, 10 male) treated with BS/HPCC for 1 year. Cephalograms were analysed at pre-treatment (T1), post-treatment (T2) and at the 3-year post-treatment (T3) stage with the patients mean ages of 8.10, 9.14 and 12.18 years, respectively. The control group consisted of 23 subjects (13 female, 10 male) with normal occlusion, with comparable ages at the 3 stages (8.45, 9.45 and 12.50 years at T1, T2 and T3, respectively). T tests were used for intergroup comparisons at T1 and to compare the changes during the 3-year post-treatment period (T2-T3). Intragroup comparison in the treated group was evaluated with dependent t tests between T1 and T2. Correlations between the overbite changes in the T2-T3 period, the pre-treatment AOB severity and the amount of correction achieved during treatment were evaluated with Pearson's correlation coefficient. RESULTS No statistically significant relapse of the AOB was found at T3. Only 1 patient had a clinically significant AOB relapse. Neither the pre-treatment AOB severity nor the amount of correction was related to overbite changes during the 3-year post-treatment period. CONCLUSIONS There was no statistically significant relapse of the AOB, and the clinical stability of AOB correction 3-year post-treatment was of 96%.
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Affiliation(s)
- M A Cassis
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil
| | - R R de Almeida
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil.,Department of Orthodontics, University of North Paraná, UNOPAR, Londrina, Brazil
| | - G Janson
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil
| | - A Aliaga-Del Castillo
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil
| | - M R de Almeida
- Department of Orthodontics, University of North Paraná, UNOPAR, Londrina, Brazil
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Cambiano AO, Janson G, Lorenzoni DC, Garib DG, Dávalos DT. Nonsurgical treatment and stability of an adult with a severe anterior open-bite malocclusion. J Orthod Sci 2018; 7:2. [PMID: 29765914 PMCID: PMC5952238 DOI: 10.4103/jos.jos_69_17] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVES A skeletal anterior open-bite is a challenging malocclusion for the orthodontist due to the difficulty and instability of correction. Treatment options for the adult patient include extractions, anterior extrusion with intermaxillary elastics, posterior intrusion using skeletal anchorage, occlusal adjustment, and orthognathic surgery. Patient compliance plays a key role in posttreatment stability. The present case report demonstrates the orthodontic treatment of an adult patient who presented with a complex open-bite malocclusion. MATERIALS AND METHODS Treatment involved the placement of four miniscrews to assist intrusion of maxillary molars by applying posterior vertical maxillary elastics and extrusion of the anterior segments using anterior vertical interarch elastics. RESULTS Ideal intercuspation was successfully achieved and good stability was maintained during 3 years following treatment. CONCLUSION The intrusion of the maxillary molars with miniscrews is an interesting option in selected cases of skeletal anterior open bite. The retention protocol should be specific in these cases.
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Affiliation(s)
- Aldo Otazú Cambiano
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil
| | - Guilherme Janson
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil
| | | | - Daniela Gamba Garib
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil
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Foncatti CF, Castanha Henriques JF, Janson G, Caldas W, Garib DG. Long-term stability of Class II treatment with the Jasper jumper appliance. Am J Orthod Dentofacial Orthop 2017; 152:663-671. [PMID: 29103444 DOI: 10.1016/j.ajodo.2017.03.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 03/01/2017] [Accepted: 03/01/2017] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Treatment of Class II Division 1 malocclusion with orthopedic devices combined with fixed orthodontic appliances has shown excellent results when used in growing patients. We aimed to evaluate the long-term stability of the cephalometric changes obtained during Class II malocclusion correction with the Jasper jumper associated with fixed appliances. METHODS The treatment group comprised 24 patients who were evaluated at 3 stages: pretreatment, posttreatment, and long-term posttreatment. The control group comprised 15 subjects with normal occlusion. Intratreatment group comparisons among the 3 stages were performed with repeated measures analysis of variance, followed by Tukey tests. Intergroup comparisons of posttreatment changes and normal growth changes of the treatment group were performed with t tests. RESULTS Apical base relationship, maxillary incisor anteroposterior position, and overjet demonstrated significant relapses in relation to the control group. CONCLUSIONS Most dentoalveolar changes obtained with the Jasper jumper followed by fixed appliances during treatment remained stable in the long term. However, apical base relationship, maxillary incisor anteroposterior position, and overjet demonstrated significant relapses in relation to the control group. Therefore, active retention time should be increased in the posttreatment period.
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Affiliation(s)
| | | | - Guilherme Janson
- Department of Orthodontics, Bauru Dental School, University of São Paulo, São Paulo, Brazil
| | - Waleska Caldas
- Department of Orthodontics, Bauru Dental School, University of São Paulo, São Paulo, Brazil
| | - Daniela Gamba Garib
- Department of Orthodontics, Bauru Dental School, University of São Paulo, São Paulo, Brazil
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Paccini JVC, Cotrim-Ferreira FA, Ferreira FV, Freitas KMSD, Cançado RH, Valarelli FP. Efficiency of two protocols for maxillary molar intrusion with mini-implants. Dental Press J Orthod 2017; 21:56-66. [PMID: 27409654 PMCID: PMC4944730 DOI: 10.1590/2177-6709.21.3.056-066.oar] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 11/26/2015] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE The aim of this study was to compare the efficiency of two protocols for maxillary molar intrusion with two or three mini-implants. METHODS Twenty five maxillary first molars extruded for loss of their antagonists in adult subjects were selected. The sample was divided into two groups, according to the intrusion protocol with two or three mini-implants. Group 1 consisted of 15 molars that were intruded by two mini-implants. Group 2 consisted of 10 molars intruded by three mini-implants. Changes with treatment were analyzed in lateral cephalograms at the beginning and at the end of intrusion of maxillary molars. RESULTS Results showed that there was no difference in efficiency for the two intrusion protocols. It was concluded that extruded maxillary molars can be intruded with two or three mini-implants with similar efficiency.
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24
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Common errors observed at the American Board of Orthodontics clinical examination. Am J Orthod Dentofacial Orthop 2017; 152:139-142. [PMID: 28760267 DOI: 10.1016/j.ajodo.2017.05.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 05/01/2017] [Accepted: 05/01/2017] [Indexed: 11/22/2022]
Abstract
The American Board of Orthodontics has developed tools to help examinees select patients to be used for the Board examination. The Case Management Form can be used to evaluate aspects of a patient's treatment that cannot be measured by other tools. The Case Management Form is a structured treatment-neutral assessment of orthodontic objectives and outcomes associated with a patient's treatment. Despite the availability of this form, examiners continue to see problems, including lack of attention to finishing details, inappropriate treatment objectives, excessive proclination of mandibular incisors due to treatment mechanics, excessive expansion of mandibular intercanine width, closing skeletal open bite with extrusion of anterior teeth leading to excessive gingival display, and failure to recognize the importance of controlling the eruption or extrusion of molars during treatment. In addition, some examinees exhibit a lack of understanding of proper cephalometric tracing and superimposition techniques, which lead to improper interpretation of cephalometric data and treatment outcomes.
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25
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Marañón-Vásquez GA, Soldevilla Galarza LC, Tolentino Solis FA, Wilson C, Romano FL. Aesthetic and functional outcomes using a multiloop edgewise archwire for camouflage orthodontic treatment of a severe Class III open bite malocclusion. J Orthod 2017; 44:199-208. [DOI: 10.1080/14653125.2017.1353789] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Guido Artemio Marañón-Vásquez
- Department of Pediatric Clinic, Orthodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, SP, Brazil
| | - Luciano Carlos Soldevilla Galarza
- Department of Integrated Stomatology of the Child and Adolescent, Division of Orthodontics, Faculty of Dentistry, University San Marcos, Lima, Peru
| | - Freddy Antonio Tolentino Solis
- Department of Integrated Stomatology of the Child and Adolescent, Division of Orthodontics, Faculty of Dentistry, University San Marcos, Lima, Peru
| | - Cliff Wilson
- Department of Orthodontics, University of North Carolina, Chapel Hill, NC, USA
| | - Fábio Lourenço Romano
- Department of Pediatric Clinic, Orthodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, SP, Brazil
- Department of Orthodontics, University of North Carolina, Chapel Hill, NC, USA
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26
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Bahreman AA. Retention considerations in the assessment of long-term stability in early versus late orthodontic treatment. Semin Orthod 2017. [DOI: 10.1053/j.sodo.2016.12.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Janson G, Rizzo M, Laranjeira V, Garib DG, Valarelli FP. Posterior teeth angulation in non-extraction and extraction treatment of anterior open-bite patients. Prog Orthod 2017; 18:13. [PMID: 28503725 PMCID: PMC5457959 DOI: 10.1186/s40510-017-0167-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 04/25/2017] [Indexed: 11/20/2022] Open
Abstract
Backgound This study cephalometrically evaluated the posterior teeth angulation changes of anterior open-bite non-extraction and extraction treatment in the permanent dentition, with anterior vertical elastics. Methods The sample consisted of initial and final lateral headfilms of 60 patients divided into 2 groups: Group 1 consisted of 30 patients treated with non-extraction with an initial mean age of 15.26 years and treated with fixed appliances for a mean period of 2.46 years. Group 2 consisted of 30 patients treated with extractions, with an initial mean age of 14.03 years, and treated with fixed appliances for a mean period of 2.49 years. Within-group treatment changes were evaluated with paired t tests. Results were considered statistically significant at P < 0.05. Results The mandibular posterior teeth were significantly uprighted in both groups with both treatment protocols. Conclusions Correction of anterior open bite with either non-extraction or extractions with continuous archwires and vertical anterior elastics uprights the mandibular posterior teeth.
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Affiliation(s)
- Guilherme Janson
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP, 17012-901, Brazil.
| | - Mayara Rizzo
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP, 17012-901, Brazil
| | - Vinicius Laranjeira
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP, 17012-901, Brazil
| | - Daniela Gamba Garib
- Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP, 17012-901, Brazil
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28
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Sugawara Y, Ishihara Y, Takano-Yamamoto T, Yamashiro T, Kamioka H. Orthodontic treatment of a patient with unilateral orofacial muscle dysfunction: The efficacy of myofunctional therapy on the treatment outcome. Am J Orthod Dentofacial Orthop 2017; 150:167-80. [PMID: 27364218 DOI: 10.1016/j.ajodo.2015.08.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Revised: 08/01/2015] [Accepted: 08/01/2015] [Indexed: 10/21/2022]
Abstract
The orofacial muscle is an important factor in the harmony of the occlusion, and its dysfunction significantly influences a patient's occlusion after craniofacial growth and development. In this case report, we describe the successful orthodontic treatment of a patient with unilateral orofacial muscle dysfunction. A boy, 10 years 0 months of age, with a chief complaint of anterior open bite, was diagnosed with a Class III malocclusion with facial musculoskeletal asymmetry. His maxillomandibular relationships were unstable, and he was unable to lift the right corner of his mouth upon smiling because of weak right orofacial muscles. A satisfactory occlusion and a balanced smile were achieved after orthodontic treatment combined with orofacial myofunctional therapy, including muscle exercises. An acceptable occlusion and facial proportion were maintained after a 2-year retention period. These results suggest that orthodontic treatment with orofacial myofunctional therapy is an effective option for a patient with orofacial muscle dysfunction.
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Affiliation(s)
- Yasuyo Sugawara
- Senior assistant professor, Department of Orthodontics, Okayama University Hospital, Okayama, Japan.
| | - Yoshihito Ishihara
- Assistant professor, Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Teruko Takano-Yamamoto
- Professor and chair, Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Takashi Yamashiro
- Professor and chair, Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Osaka University, Suita, Japan
| | - Hiroshi Kamioka
- Professor and chair, Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
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29
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Canuto LFG, Janson G, de Lima NS, de Almeida RR, Cançado RH. Anterior open-bite treatment with bonded vs conventional lingual spurs: A comparative study. Am J Orthod Dentofacial Orthop 2016; 149:847-55. [DOI: 10.1016/j.ajodo.2015.11.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 11/01/2015] [Accepted: 11/01/2015] [Indexed: 10/21/2022]
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30
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Atsawasuwan P, Hohlt W, Evans CA. Nonsurgical approach to Class I open-bite malocclusion with extrusion mechanics: a 3-year retention case report. Am J Orthod Dentofacial Orthop 2015; 147:499-508. [PMID: 25836010 DOI: 10.1016/j.ajodo.2014.04.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Revised: 04/01/2014] [Accepted: 04/01/2014] [Indexed: 11/25/2022]
Abstract
Anterior open bite is one of the most challenging malocclusions for orthodontic treatment. The high incidence of relapse is a major concern. Therefore, accurate initial examination, diagnosis, treatment plan, and consideration of habitual risk factors are crucial for a successful outcome without unwanted sequelae. Excellent patient compliance for retainer wear is also a critical factor. This case report shows the 3-year stability of a nonsurgical and nonextraction orthodontic treatment of a 5-mm anterior open-bite malocclusion in a 12-year-old girl with extrusion mechanics and habit modification. After 2 years of orthodontic treatment, excellent outcomes were achieved. With an appropriate retention protocol, the long-term stability of the treatment was favorable.
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Affiliation(s)
- Phimon Atsawasuwan
- Assistant professor, Department of Orthodontics, University of Illinois at Chicago, Chicago, Ill.
| | - William Hohlt
- Clinical professor, Department of Orthodontics, University of Illinois at Chicago, Chicago, Ill
| | - Carla A Evans
- Professor and head, Department of Orthodontics, University of Illinois at Chicago, Chicago, Ill
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31
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Scheffler NR, Proffit WR, Phillips C. Outcomes and stability in patients with anterior open bite and long anterior face height treated with temporary anchorage devices and a maxillary intrusion splint. Am J Orthod Dentofacial Orthop 2014; 146:594-602. [PMID: 25439210 DOI: 10.1016/j.ajodo.2014.07.020] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 07/01/2014] [Accepted: 07/01/2014] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Temporary skeletal anchorage devices now offer the possibility of closing anterior open bites and decreasing anterior face height by intruding maxillary posterior teeth, but data for treatment outcomes are lacking. This article presents outcomes and posttreatment changes for consecutive patients treated with a standardized technique. METHODS The sample included 33 consecutive patients who had intrusion of maxillary posterior teeth with a maxillary occlusal splint and nickel-titanium coil springs to temporary anchorage devices in the zygomatic buttress area, buccal and apical to the maxillary molars. Of this group, 30 had adequate cephalograms available for the period of treatment, 27 had cephalograms including 1-year posttreatment, and 25 had cephalograms from 2 years or longer. RESULTS During splint therapy, the mean molar intrusion was 2.3 mm. The mean decrease in anterior face height was 1.6 mm, less than expected because of a 0.6-mm mean eruption of the mandibular molars. During the postintrusion orthodontics, the mean change in maxillary molar position was a 0.2-mm extrusion, and there was a mean 0.5-mm increase in face height. Positive overbite was maintained in all patients, with a slight elongation (<2 mm) of the incisors contributing to this. During the 1 year of posttreatment retention, the mean changes were a further eruption of 0.5 mm of the maxillary molars, whereas the mandibular molars intruded by 0.6 mm, and there was a small decrease in anterior face height. Changes beyond 1 year posttreatment were small and attributable to growth rather than relapse in tooth positions. CONCLUSIONS Intrusion of the maxillary posterior teeth can give satisfactory correction of moderately severe anterior open bites, but 0.5 to 1.5 mm of reeruption of these teeth is likely to occur. Controlling the vertical position of the mandibular molars so that they do not erupt as the maxillary teeth are intruded is important in obtaining a decrease in face height.
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Affiliation(s)
- Nicole R Scheffler
- Adjunct associate professor, Department of Orthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC.
| | - William R Proffit
- Kenan distinguished professor, Department of Orthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC
| | - Ceib Phillips
- Professor and associate dean, Department of Orthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC
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Matsumoto MAN, Romano FL, Ferreira JTL, Valério RA. Open bite: diagnosis, treatment and stability. Braz Dent J 2014; 23:768-78. [PMID: 23338275 DOI: 10.1590/s0103-64402012000600024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Accepted: 12/03/2012] [Indexed: 11/22/2022] Open
Abstract
Open bite has fascinated Orthodontics due to the difficulties regarding its treatment and maintenance of results. This anomaly has distinct characteristics that, in addition to the complexity of multiple etiological factors, have aesthetic and functional consequences. Within this etiological context, several types of mechanics have been used in open bite treatment, such as palatal crib, orthopedic forces, occlusal adjustment, orthodontic camouflage with or without extraction, orthodontic intervention using mini-implants or mini-plates, and even orthognathic surgery. An accurate diagnosis and etiological determination are always the best guides to establish the objectives and the ideal treatment plan for such a malocclusion. This report describes two cases of open bite. At the end of the treatment, both patients had their canines and molars in Class I occlusion, normal overjet and overbite, and stability during the posttreatment period.
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Affiliation(s)
- Mírian Aiko Nakane Matsumoto
- Department of Pediatric Clinic, Ribeirão Preto Dental School, University of São Paulo, Ribeirão Preto, SP, Brazil
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Menezes LMD, Ritter DE, Locks A. Combining traditional techniques to correct anterior open bite and posterior crossbite. Am J Orthod Dentofacial Orthop 2013; 143:412-20. [PMID: 23452976 DOI: 10.1016/j.ajodo.2011.10.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Revised: 10/01/2011] [Accepted: 10/01/2011] [Indexed: 11/20/2022]
Abstract
The treatment of anterior open bite often requires the use of skeletal anchorage to prevent excessive eruption of the posterior teeth and consequent downward rotation of the mandible. However, this procedure might not always be accomplished. This article reports the successful treatment of an anterior open bite and a posterior crossbite in a young boy, combining traditional techniques and involving high-pull maxillary traction to help growth to correct the skeletal Class II malocclusion without skeletal anchorage. The vertical dentoalveolar contribution of maxillary growth was also favorable to close the bite, whereas cross-elastics corrected the axial inclination of the mandibular posterior teeth, eliminating the inverted posterior crossbite. The open bite was completely closed with edgewise appliances, which also achieved normal overjet, intercuspation, and incisor exposure on smiling. Traditional mechanics for the treatment of open bite and crossbite remain a useful alternative when patients do not accept skeletal anchorage.
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Affiliation(s)
- Luciane Macedo de Menezes
- Department of Orthodontics, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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Treatment effects of bonded spurs associated with high-pull chincup therapy in the treatment of patients with anterior open bite. Am J Orthod Dentofacial Orthop 2012; 142:487-93. [PMID: 22999672 DOI: 10.1016/j.ajodo.2012.04.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Revised: 04/01/2012] [Accepted: 04/01/2012] [Indexed: 11/24/2022]
Abstract
INTRODUCTION The aim of this prospective clinical study was to investigate the cephalometric changes produced by bonded spurs associated with high-pull chincup therapy in children with Angle Class I malocclusion and anterior open bite. METHODS Thirty patients with an initial mean age of 8.14 years and a mean anterior open bite of -3.93 mm were treated with bonded spurs associated with chincup therapy for 12 months. An untreated control group of 30 subjects with an initial mean age of 8.36 years and a mean anterior open bite of -3.93 mm and the same malocclusion was followed for 12 months for comparison. Student t tests were used for intergroup comparisons. RESULTS The treated group demonstrated a significantly greater decrease of the gonial angle, and increase in overbite, palatal tipping of the maxillary incisors, and vertical dentoalveolar development of the maxillary and mandibular incisors compared with the control group. CONCLUSIONS The association of bonded spurs with high-pull chincup therapy was efficient for the correction of the open bite in 86.7% of the patients, with a 5.23-mm (SD, ±1.69) overbite increase.
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Bueno Medeiros R, Cardoso de Araújo LF, Mucha JN, Trindade Motta A. Stability of open-bite treatment in adult patients: A systematic review. J World Fed Orthod 2012. [DOI: 10.1016/j.ejwf.2012.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Jacobs C, Jacobs-Müller C, Hoffmann V, Meila D, Erbe C, Krieger E, Wehrbein H. Dental compensation for moderate Class III with vertical growth pattern by extraction of the lower second molars. J Orofac Orthop 2012; 73:41-8. [DOI: 10.1007/s00056-011-0065-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Deguchi T, Kurosaka H, Oikawa H, Kuroda S, Takahashi I, Yamashiro T, Takano-Yamamoto T. Comparison of orthodontic treatment outcomes in adults with skeletal open bite between conventional edgewise treatment and implant-anchored orthodontics. Am J Orthod Dentofacial Orthop 2011; 139:S60-8. [DOI: 10.1016/j.ajodo.2009.04.029] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2008] [Revised: 04/01/2009] [Accepted: 04/01/2009] [Indexed: 10/18/2022]
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Matsumoto MAN. Má oclusão Classe I de Angle, com mordida aberta anterior, tratada com extração de dentes permanentes. Dental Press J Orthod 2011. [DOI: 10.1590/s2176-94512011000100018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A mordida aberta é uma anomalia com características distintas que, além da complexidade dos múltiplos fatores etiológicos, traz consequências estéticas e funcionais. Muitas alternativas têm sido utilizadas em seu tratamento, entre elas a grade palatina, forças ortopédicas, ajuste oclusal, camuflagem com ou sem exodontias, mini-implantes ou miniplacas e cirurgia ortognática. O diagnóstico preciso e a determinação da etiologia permitem estabelecer os objetivos e o plano de tratamento ideal para essa má oclusão. O presente relato descreve o tratamento de uma má oclusão Classe I de Angle, com padrão esquelético de Classe II e mordida aberta anterior, realizado em duas fases e que foi apresentado à diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO), representando a categoria 2, como parte dos requisitos para a obtenção do título de Diplomado pelo BBO.
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Greenlee GM, Huang GJ, Chen SSH, Chen J, Koepsell T, Hujoel P. Stability of treatment for anterior open-bite malocclusion: A meta-analysis. Am J Orthod Dentofacial Orthop 2011; 139:154-69. [DOI: 10.1016/j.ajodo.2010.10.019] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Revised: 10/01/2010] [Accepted: 10/01/2010] [Indexed: 10/18/2022]
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Teittinen M, Tuovinen V, Tammela L, Schatzle M, Peltomaki T. Long-term stability of anterior open bite closure corrected by surgical-orthodontic treatment. Eur J Orthod 2011; 34:238-43. [DOI: 10.1093/ejo/cjq194] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Baek MS, Choi YJ, Yu HS, Lee KJ, Kwak J, Park YC. Long-term stability of anterior open-bite treatment by intrusion of maxillary posterior teeth. Am J Orthod Dentofacial Orthop 2010; 138:396.e1-396.e9. [DOI: 10.1016/j.ajodo.2010.04.023] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Revised: 05/01/2010] [Accepted: 05/01/2010] [Indexed: 11/29/2022]
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Maia FA, Janson G, Barros SE, Maia NG, Chiqueto K, Nakamura AY. Long-term stability of surgical-orthodontic open-bite correction. Am J Orthod Dentofacial Orthop 2010; 138:254.e1-254.e10; discussion 254-6. [DOI: 10.1016/j.ajodo.2010.03.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2009] [Revised: 03/01/2010] [Accepted: 03/01/2010] [Indexed: 11/30/2022]
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Janson G, Crepaldi MV, Freitas KMS, de Freitas MR, Janson W. Stability of anterior open-bite treatment with occlusal adjustment. Am J Orthod Dentofacial Orthop 2010; 138:14.e1-7; discussion 14-5. [DOI: 10.1016/j.ajodo.2010.01.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2009] [Revised: 01/01/2010] [Accepted: 01/01/2010] [Indexed: 11/26/2022]
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Cabrera MDC, Cabrera CAG, de Freitas KMS, Janson G, de Freitas MR. Lateral open bite: Treatment and stability. Am J Orthod Dentofacial Orthop 2010; 137:701-11. [DOI: 10.1016/j.ajodo.2007.11.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2007] [Revised: 11/01/2007] [Accepted: 11/01/2007] [Indexed: 10/19/2022]
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Smithpeter J, Covell D. Relapse of anterior open bites treated with orthodontic appliances with and without orofacial myofunctional therapy. Am J Orthod Dentofacial Orthop 2010; 137:605-14. [DOI: 10.1016/j.ajodo.2008.07.016] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2007] [Revised: 07/01/2008] [Accepted: 07/01/2008] [Indexed: 11/29/2022]
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Zuroff JP, Chen SH, Shapiro PA, Little RM, Joondeph DR, Huang GJ. Orthodontic treatment of anterior open-bite malocclusion: Stability 10 years postretention. Am J Orthod Dentofacial Orthop 2010; 137:302.e1-8; discussion 302-3. [DOI: 10.1016/j.ajodo.2009.06.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2009] [Revised: 06/01/2009] [Accepted: 06/01/2009] [Indexed: 10/19/2022]
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Kojima K, Endo T, Shimooka S. Effects of maxillary second molar extraction on dentofacial morphology before and after anterior open-bite treatment: a cephalometric study. Odontology 2009; 97:43-50. [DOI: 10.1007/s10266-008-0093-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2008] [Accepted: 08/25/2008] [Indexed: 11/30/2022]
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Moon CH, Lee JS, Lee HS, Choi JH. Non-surgical treatment and retention of open bite in adult patients with orthodontic mini-implants. ACTA ACUST UNITED AC 2009. [DOI: 10.4041/kjod.2009.39.6.402] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Cheol-Hyun Moon
- Professor, Department of Orthodontics, Gachon University Dental Hospital, Korea
| | | | | | - Jin-Hugh Choi
- Assistant Professor, Department of Dentistry, Chung-Ang University College of Medicine, Korea
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Espeland L, Dowling PA, Mobarak KA, Stenvik A. Three-year stability of open-bite correction by 1-piece maxillary osteotomy. Am J Orthod Dentofacial Orthop 2008; 134:60-6. [PMID: 18617104 DOI: 10.1016/j.ajodo.2006.05.049] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2006] [Revised: 05/01/2006] [Accepted: 05/01/2006] [Indexed: 11/19/2022]
Abstract
INTRODUCTION The purpose of this retrospective cephalometric study was to evaluate the long-term vertical stability of anterior open-bite correction by 1-piece Le Fort I osteotomy and rigid fixation. METHODS The sample comprised 40 consecutively treated patients from the files of the Department of Orthodontics, University of Oslo, Norway. All subjects had received a 1-piece Le Fort I osteotomy as the only surgical procedure from 1990 through 1998 and were followed for 3 years according to a protocol for data collection. Lateral cephalograms were obtained before surgery and at 5 occasions after surgery. RESULTS The mean open bite before surgery was 2.6 mm; at the 3-year follow-up, 35 patients had a positive overbite, and the remaining 5 patients had an open bite between 0.2 and 0.9 mm. Impaction of the posterior maxilla >or=2 mm relapsed on average by 31%, and inferior repositioning of the anterior maxilla >or=2 mm relapsed by 62%. Maxillary vertical skeletal changes during the postsurgery period were compensated for by orthodontic dentoalveolar adaptation. Most of the skeletal relapse occurred during the first 6 months after surgery and always in the direction opposite to the surgical movement. The relative contribution of mandibular and maxillary changes in anterior open-bite closure was approximately 3:1. CONCLUSIONS Surgical correction of anterior open bite was generally stable over a 3-year period, and skeletal relapse was counteracted by dentoalveolar compensation.
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Affiliation(s)
- Lisen Espeland
- Department of Orthodontics, University of Oslo, Oslo, Norway.
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