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Bharadwaj A, Ahuja S, Bhambri E, Gupta S, Uppal J. A 3D Finite Element Analysis of biomechanical effects on teeth and bone during true intrusion of posteriors using miniscrews. Int Orthod 2024; 22:100819. [PMID: 37864876 DOI: 10.1016/j.ortho.2023.100819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 09/24/2023] [Accepted: 10/02/2023] [Indexed: 10/23/2023]
Abstract
OBJECTIVE The primary objective of this study was to investigate the biomechanical effects and stresses on bone, PDL, cementum and displacement along X-,Y- and Z-axis during true intrusion of molars using mini-implants with finite element analysis; the secondary objective of the study was to find out the best method for posterior intrusion in clinical practice. MATERIAL AND METHODS A 3D finite element method was used to simulate true molar intrusion using sliding mechanics. Two groups were made, with mini-implants placed on buccal side and palatal side with a cap splint for MODEL1, and a single mini-implant placed buccally with transpalatal arch (TPA) for MODEL2. The material characteristics which include the Young's modulus and Poison's ratio were assigned. von Mises stress, principal stress on PDL and alveolar bone, displacements in all the 3 planes were determined. RESULTS Bone stress patterns showed compressive stresses on the buccal aspect and tensile stresses on the palatal aspect for both MODELS. Stresses in the PDL and cementum were mainly concentrated in the apex region, with a more uniform distribution of stresses for MODEL 1. Tooth displacement showed true intrusion for both MODELS, i.e. the Z axis, and a more controlled buccal tipping for MODEL 1. CONCLUSION Of the modalities compared, the best controlled tooth movements for posterior intrusion in the treatment of open bite were obtained with mini-implants placed with a cap splint (MODEL 1).
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Affiliation(s)
- Ankit Bharadwaj
- Surendera Dental College and Research Institute, Rajasthan University of Health Sciences, Department of Orthodontics and Dentofacial Orthopaedics, Sri Ganganagar, Rajasthan 335001, India
| | - Sachin Ahuja
- Surendera Dental College and Research Institute, Rajasthan University of Health Sciences, Department of Orthodontics and Dentofacial Orthopaedics, Sri Ganganagar, Rajasthan 335001, India
| | - Eenal Bhambri
- Surendera Dental College and Research Institute, Rajasthan University of Health Sciences, Department of Orthodontics and Dentofacial Orthopaedics, Sri Ganganagar, Rajasthan 335001, India
| | - Seema Gupta
- A.C.P.M Dental College, Maharashtra University of Health Sciences, Department of Orthodontics and Dentofacial Orthopaedics, Dhule, Maharashtra 424002, India
| | - Japjee Uppal
- Surendera Dental College and Research Institute, Rajasthan University of Health Sciences, Department of Prosthodontics and Crown and Bridge, Sri Ganganagar, Rajasthan 335001, India.
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Akl HE, Mostafa YA. Digitization and validation of the open bite checklist manifesto: a step toward artificial intelligence. Angle Orthod 2024; 94:51-58. [PMID: 37650552 DOI: 10.2319/032923-225.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 07/01/2023] [Indexed: 09/01/2023] Open
Abstract
OBJECTIVES To introduce and validate newly designed computer software to aid in the diagnosis of anterior open bite (AOB). MATERIALS AND METHODS The software was constructed based on the algorithm of a standardized open bite checklist, which considered skeletal, dental, and soft tissue components, as well as smile characteristics. Feeding the software with this input yielded a digital form output (DFO) in the guise of a diagnostic report characterizing the AOB phenotype, contributing components, severity, associated problems, and functional factors. For validation, DFO was compared to a conventional form output (CFO), created in a standardized manner according to expert opinions. Agreement between the DFO and CFO in terms of AOB phenotype was the primary outcome, while the secondary outcome was the number of missing diagnostic components in either method. RESULTS Percentage of agreement between CFO and DFO was 82.2%, with a kappa coefficient of 0.78, which is considered a good level of agreement. There was a statistically significant relationship between the number of missing diagnostic components in CFO and level of disagreement, which rendered the DFO more reliable. CONCLUSIONS Newly constructed software represents an efficient and valid diagnostic tool for AOB and its contributing components. There was good agreement between CFO and DFO, with the latter being more comprehensive and reliable. The algorithm built in the software can be used as the basis for a future artificial intelligence model to aid in the diagnosis of AOB.
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Ferrillo M, Pandis N, Fleming PS. The effect of vertical skeletal proportions on overbite changes in untreated adolescents: a longitudinal evaluation. Angle Orthod 2024; 94:25-30. [PMID: 37655804 DOI: 10.2319/042823-310.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 07/01/2023] [Indexed: 09/02/2023] Open
Abstract
OBJECTIVES To evaluate the change in overbite within an untreated cohort from 9 to 18 years of age and to compare age-related changes in overbite depth based on vertical skeletal proportion. MATERIALS AND METHODS Lateral cephalograms were obtained from the American Association of Orthodontists Foundation (AAOF) Craniofacial Growth Legacy Collection Project. All cephalometric outcome measures were assessed at ages 9-11 (T1), 13-15 (T2), and 17-19 (T3) years. Generalized estimating equation (GEE) regression models were fit to examine the effect of MP-SN on overbite adjusted for age and gender. RESULTS A total of 130 subjects from the Denver, Bolton Brush, and Oregon Growth Studies were included. Overbite was relatively constant from T1 to T3 irrespective of facial type, with a minor decrease (0.15 mm) being observed overall. There was a transient increase between T1 and T2 (0.31 mm) that was canceled out by changes during later adolescence. Based on the GEE regression model adjusted for time and gender, a minor but statistically significantly greater reduction in overbite arose as MP-SN increased (coefficient = -0.080; 95% confidence interval -0.12, -0.04; P < .01). CONCLUSIONS In hyperdivergent subjects, a marginal decrease in overbite was observed from 9 to 18 years of age, with a transient increase from the period spanning 9-11 years to 13-15 years, which was negated in later adolescence. There are limited data to suggest that observation of vertical growth is required in most patients with marginally increased vertical facial proportions in the juvenile and pubertal phases.
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Broutin A, K Bidi-Lebihan A, Canceill T, Vaysse F, Bloch-Zupan A, Bailleul-Forestier I, Noirrit-Esclassan E. Association between malocclusions and amelogenesis imperfecta genotype and phenotype: A systematic review. Int Orthod 2023; 21:100789. [PMID: 37494776 DOI: 10.1016/j.ortho.2023.100789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/19/2023] [Accepted: 06/24/2023] [Indexed: 07/28/2023]
Abstract
INTRODUCTION The aim of this systematic review (Prospero CRD42022323188) is to investigate whether an association exists in patients with amelogenesis imperfecta (AI) between occlusal characteristics and genotype on the one hand and enamel structural phenotype on the other. MATERIAL AND METHODS Reports up to May 2023 assessing occlusion of individuals with AI were browsed in a systematic search using Medline, Embase, ISI Web of Science, and the grey literature. Randomised control trials, case control studies, and case series specifying both occlusion, assessed by cephalometric or clinical analysis, and genotype or dental phenotype in patients with AI were included without any age limitation. Two authors independently selected the publications and extracted the data in accordance with the PRISMA statement. The risk of bias was assessed with the Critical Appraisal Checklists from the Johanna Briggs Institute. RESULTS Twenty-five articles were chosen from the 261 results. Most of the included publications were case series (n=22) and case control studies (n=3). Thirteen studies reported both a genotype (ENAM, FAM83H, FAM20A, DLX3, CNMM4, WDR72) and occlusal diagnostic. The methodological quality of the studies was moderate. All AI phenotypes showed an open bite (OB) rate around 35%, except mixed form. The other malocclusions were not often mentioned. No correlation between occlusal phenotype and genotype or AI phenotype could be identified in patients with AI, as most studies had short occlusal descriptions and small sample sizes. CONCLUSION OB malocclusions were more frequently reported in AI. This review highlighted the need for a more accurate description of orofacial features associated with AI, to better clarify the role of amelogenesis genes in the regulation of craniofacial morphogenesis and identify patients requiring orthognathic surgery at an early stage.
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Affiliation(s)
- Alice Broutin
- Paediatric Dentistry Unit, CHU de Toulouse, University Toulouse III, Toulouse, France; Team IDEA: identification, environments et anthropometry, UMR 5288, CAGT - Centre for Anthropobiology and Genomics of Toulouse. University Paul-Sabatier Toulouse III, Toulouse, France
| | - Angélique K Bidi-Lebihan
- Team IDEA: identification, environments et anthropometry, UMR 5288, CAGT - Centre for Anthropobiology and Genomics of Toulouse. University Paul-Sabatier Toulouse III, Toulouse, France
| | - Thibault Canceill
- Inserm, In COMM (Intestine ClinicOmics Microbiota & Metabolism), UMR 1297, Toulouse, France
| | - Frédéric Vaysse
- Paediatric Dentistry Unit, CHU de Toulouse, University Toulouse III, Toulouse, France; Team IDEA: identification, environments et anthropometry, UMR 5288, CAGT - Centre for Anthropobiology and Genomics of Toulouse. University Paul-Sabatier Toulouse III, Toulouse, France; Competence Centre of Oral Diseases, CHU de Toulouse, Toulouse, France
| | - Agnès Bloch-Zupan
- Reference Centre of Oral Diseases, CHU de Strasbourg, Strasbourg, France; Inserm U964, institut de génétique et de biologie moléculaire et cellulaire (IGBMC), UMR7104 CNRS-ULP, Strasbourg, France
| | - Isabelle Bailleul-Forestier
- Team IDEA: identification, environments et anthropometry, UMR 5288, CAGT - Centre for Anthropobiology and Genomics of Toulouse. University Paul-Sabatier Toulouse III, Toulouse, France; Competence Centre of Oral Diseases, CHU de Toulouse, Toulouse, France
| | - Emmanuelle Noirrit-Esclassan
- Team IDEA: identification, environments et anthropometry, UMR 5288, CAGT - Centre for Anthropobiology and Genomics of Toulouse. University Paul-Sabatier Toulouse III, Toulouse, France; Competence Centre of Oral Diseases, CHU de Toulouse, Toulouse, France; Inserm, UMR1297 I2MC, Toulouse, France.
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Kwon TG, Elnagar MH, Shirazi S, Goben AH, Miloro M, Han MD. Orthodontic correction of anterior open bite using skeletal anchorage: systematic review and meta-analysis. Int J Oral Maxillofac Surg 2023:S0901-5027(23)00292-8. [PMID: 37949782 DOI: 10.1016/j.ijom.2023.10.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 10/24/2023] [Accepted: 10/26/2023] [Indexed: 11/12/2023]
Abstract
The purpose of this study was to investigate the scientific evidence on the short- and long-term effects of orthodontic correction of anterior open bite (AOB) using skeletal anchorage (SA). Clinical studies on the use of SA for AOB in patients with permanent dentition, or at least 12 years of age, were searched. Short- and long-term (≥2 years) outcomes were collected. Mean differences were calculated from pooled data. Twenty-four eligible articles with a total of 362 subjects were selected for inclusion in the meta-analysis. There was a significant increase in overbite (3.88 mm, P < 0.001) and maxillary molar intrusion (-2.15 mm, P < 0.001). The mandible showed counterclockwise rotation with anterosuperior chin movement (all P < 0.001). Long term, the decrease in overbite was 19.9% and decrease in molar intrusion was 22.9%. The decrease in the mandibular projection was 14.6% for ANB (A-point-nasion-B-point angle) and 46.2% for mandibular anteroposterior position. The overall risk of bias in the included studies was rated as moderate to high, and publication bias existed for several key variables. SA for maxillary molar intrusion effectively improved dental and skeletal outcomes, but there was a long-term decrease in overbite and maxillary molar position. The variable data quality, heterogeneity, and publication bias in investigated outcomes are limitations in interpreting the findings.
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Affiliation(s)
- T-G Kwon
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, South Korea
| | - M H Elnagar
- Department of Orthodontics, University of Illinois Chicago, College of Dentistry, Chicago, IL, USA
| | - S Shirazi
- Virginia Commonwealth University, School of Dentistry, Richmond, VA, USA
| | - A H Goben
- Library of the Health Sciences, University of Illinois Chicago, Chicago, IL, USA
| | - M Miloro
- Department of Oral and Maxillofacial Surgery, University of Illinois Chicago, College of Dentistry, Chicago, IL, USA
| | - M D Han
- Department of Oral and Maxillofacial Surgery, University of Illinois Chicago, College of Dentistry, Chicago, IL, USA.
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Hammad T, Elraggal A, Moussa H, Marzouk W, Ismail H. Stability of anterior open bite cases treated with upper and lower extrusion arches in adults: a follow-up study. Angle Orthod 2023; 93:659-666. [PMID: 37922388 PMCID: PMC10633792 DOI: 10.2319/030623-155.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 06/01/2023] [Indexed: 11/05/2023] Open
Abstract
OBJECTIVES To investigate the post-treatment stability of anterior open bite (AOB) cases treated with upper and lower extrusion arches in adults. MATERIALS AND METHODS 23 patients with AOB were treated with extrusion arches and evaluated for dentoskeletal changes using lateral cephalometric radiographs before treatment (T0), after treatment (T1), and 12 months post-treatment (T2). Patients received bondable tongue spurs and vacuum-formed retainers as post-treatment retention/stability measures for 12 months. Post-treatment stability was further assessed qualitatively by the Photographic Openbite Severity Index. RESULTS All the cases showed positive overlap between the anterior teeth at the end of orthodontic treatment, and 20 of 23 treated patients attended the recall visit after 12 months. A total of 85% of the cases maintained positive overlap at least 1 year post-treatment, 10% showed edge-to-edge bite, and only 5% showed no overbite. CONCLUSIONS Treatment of AOB in adults with extrusion arches proved to be stable 1 year post-treatment. Changes in the overbite after 1 year of follow-up were not significant.
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Affiliation(s)
- Tasneem Hammad
- Corresponding author: Dr Tasneem Hammad, Orthodontics Department, Faculty of Dentistry, Champillion Street, Alexandria University, Azarita, Egypt (e-mail: )
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Hsu LF, Liu YJ, Wang SH, Chen YJ, Chen YJ, Yao CCJ. Orthodontic correction of acquired open bite with TMJ degeneration: A retrospective study of outcomes and stability. J Formos Med Assoc 2023:S0929-6646(23)00406-0. [PMID: 37865535 DOI: 10.1016/j.jfma.2023.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 08/15/2023] [Accepted: 10/02/2023] [Indexed: 10/23/2023] Open
Abstract
BACKGROUND/PURPOSE Newly developed temporary anchorage devices (TADs) serve a strong orthodontic anchorage to intrude molars for correction of anterior open bite (AOB). We measured cephalometric changes in skeletal open bite patients which developed subsequently to temporomandibular joint disorders with bilateral point contacts at terminal molars. METHODS We retrospectively recruited 32 patients who had been treated their TMD before orthodontic correction (overbite: -3.14 ± 1.86 mm). Partial orthodontic appliances were used to intrude posterior teeth using TADs until positive OB obtained (T1). Full fixed appliances were then used to achieve proper overjet and overbite (T2). We collected lateral cephalograms before (T0), during (T1) and after (T2) treatment, and at follow-ups (T3). Using ANOVA, we analyzed the differences among these time points to determine treatment changes and stability of orthodontic results. RESULTS In this group predominantly comprising young adult women, orthodontic treatment with TADs significantly reduced upper posterior dental heights (T2-T0:-1.84 ± 0.66 mm) and facilitated the retraction and uprighting upper incisors (T2-T0: -9.92 ± 1.72°), to achieve appropriate OJ (T2-T0: -3.21 ± 0.49 mm) and OB (T2-T0: 4.10 ± 0.28 mm) with p < 0.05. Except upper posterior dental height, most of cephalometric changes including OJ, OB, and upper incisal axis remained significant at follow-ups with retention time of 3.7 ± 2.6 years. Only three out of 30 patients experienced small amount of open bite at T3. CONCLUSION Orthodontic correction of OJ remained relatively stable among 90 % of patients with TMJ degeneration by intrusion via TADs. This modern but conservative orthodontic approach can improve occlusal functions in skeletal open bites.
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Affiliation(s)
- Li-Fan Hsu
- Department of Dentistry, National Taiwan University Hospital, Hsin-Chu Branch, Hsin-Chu, Taiwan
| | - Yi-Jen Liu
- Division of Orthodontics and Dentofacial Orthopedics, Dental Department, National Taiwan University Hospital, Taipei, Taiwan
| | | | - Yunn-Jy Chen
- Division of Prosthetics, Dental Department, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Jane Chen
- Division of Orthodontics and Dentofacial Orthopedics, Dental Department, National Taiwan University Hospital, Taipei, Taiwan; Faculty of Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Chung-Chen Jane Yao
- Division of Orthodontics and Dentofacial Orthopedics, Dental Department, National Taiwan University Hospital, Taipei, Taiwan; Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan.
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Wagner CS, Pontell ME, Barrero CE, Salinero LK, Low DW, Liao EC, Nah HD, Kalish JM, Taylor JA. Associations between the timing of tongue reduction surgery, (Epi)genotype, and dentoskeletal development in patients with Beckwith-Wiedemann syndrome. J Craniomaxillofac Surg 2023; 51:568-573. [PMID: 37599200 DOI: 10.1016/j.jcms.2023.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 07/30/2023] [Indexed: 08/22/2023] Open
Abstract
Tongue reduction surgery is often pursued to manage the adverse effects of macroglossia in patients with Beckwith-Wiedemann syndrome (BWS). This study characterized dental outcomes in patients with BWS based on surgical timing and molecular diagnosis. A retrospective study was designed to include patients with BWS over the age of two who had clinical or radiographic documentation of dental development. Patients were grouped by history of tongue reduction surgery and surgical timing (early: <12 months). One hundred three patients were included (55 no tongue reduction, 18 early, 30 late). Patients who underwent late surgery had lower odds of class I occlusion (OR 0.11, 95% CI 0.02-0.58, p = 0.009) and higher odds of anterior open bite (OR 7.5, 95% CI 1.14-49.4, p = 0.036). Patients with clinical diagnoses and negative molecular testing had anterior open bite less frequently than patients with imprinting center 2 loss of methylation and paternal uniparental isodisomy of 11p15.5 (p = 0.009). Compared to reference values, patients who had tongue reductions had an increased mandibular plane angle (32.0 ± 4.5° versus 36.9 ± 5.0°, p = 0.001), indicative of hyperdivergent growth. The results of this study help to understand the complex nature of dentoskeletal growth in BWS and shed insight on how surgical timing and molecular diagnosis influence prognosis.
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Affiliation(s)
- Connor S Wagner
- Division of Plastic, Reconstructive, and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - Matthew E Pontell
- Division of Plastic, Reconstructive, and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - Carlos E Barrero
- Division of Plastic, Reconstructive, and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - Lauren K Salinero
- Division of Plastic, Reconstructive, and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - David W Low
- Division of Plastic, Reconstructive, and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - Eric C Liao
- Division of Plastic, Reconstructive, and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - Hyun-Duck Nah
- Division of Plastic, Reconstructive, and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - Jennifer M Kalish
- Division of Human Genetics, Children's Hospital of Philadelphia, USA; Departments of Pediatrics and Genetics, Perelman School of Medicine at the University of Pennsylvania, USA.
| | - Jesse A Taylor
- Division of Plastic, Reconstructive, and Oral Surgery, Children's Hospital of Philadelphia, USA.
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Huang ZW, Yang R, Gong C, Zhang CX, Wen J, Li H. Treatment of severe open bite and mandibular condyle anterior displacement by mini-screws and four second molars extraction: A case report. World J Clin Cases 2023; 11:3599-3611. [PMID: 37383903 PMCID: PMC10294191 DOI: 10.12998/wjcc.v11.i15.3599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/07/2023] [Accepted: 04/18/2023] [Indexed: 05/25/2023] Open
Abstract
BACKGROUND Temporomandibular joint (TMJ) disorders are closely related to high-angle and skeletal Class II malocclusion. Sometimes pathological changes in the mandibular condyle can cause open bite to occur after growth is complete.
CASE SUMMARY This article is about the treatment of an adult male patient with a severe hyperdivergent skeletal Class II base, an unusual and gradually occurring open bite and an abnormal mandibular condyle anterior displacement. Because the patient refused surgery, four second molars with cavities and root canal therapy were extracted, and four mini-screws were used for intrusion of the posterior teeth. The treatment duration was 22 mo, and after the treatment, the open bite was corrected and the displaced mandibular condyles were seated back to the articular fossa as shown by cone-beam computed tomography (CBCT). Based on the patient’s open bite history, the result of clinical examinations and CBCT comparisons, we believe it is possible that the occlusion interference was eliminated after the four second molars were extracted and the posterior teeth were intruded, and the patient's condyle spontaneously returned to its physiologic position. Finally, a normal overbite was established, and stable occlusion was achieved.
CONCLUSION This case report suggested that identifying the cause of open bite is essential, and the TMJ factors for hyperdivergent skeletal Class II cases should be particularly examined. For these cases, intruding posterior teeth may place the condyle in a more appropriate position and provide an environment suitable for TMJ recovery.
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Affiliation(s)
- Zi-Wei Huang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210000, Jiangsu Province, China
| | - Ren Yang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210000, Jiangsu Province, China
| | - Cheng Gong
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210000, Jiangsu Province, China
| | - Cai-Xia Zhang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210000, Jiangsu Province, China
| | - Juan Wen
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210000, Jiangsu Province, China
| | - Huang Li
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210000, Jiangsu Province, China
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Kim TW, Hwang SJ, Wu T. Treatment of anterior open bite and an ankylosed incisor by applying multiloop edgewise archwire, mini-implants, and dentoalveolar distraction. Angle Orthod 2023:491024. [PMID: 36856738 DOI: 10.2319/070122-472.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 12/01/2022] [Indexed: 03/02/2023] Open
Abstract
An 18.7-year-old female patient with an anterior open bite and an ankylosed left maxillary central incisor was referred from a private orthodontic clinic. Canine relationships were Class II and molar relationships were Class I. The open bite was closed with the multiloop edgewise archwire and up-and-down elastics. The maxillary left central incisor was extruded by dentoalveolar distraction assisted with mini-implants. Active treatment took 2 years and 1 month, and the treatment result remained stable 14 months after debonding.
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Havner C, Roussakis AÖ, Sjögreen L, Westerlund A. Open Bite Malocclusion and Orofacial Dysfunction in Patients with Myotonic Dystrophy Type 1 and Duchenne Muscular Dystrophy. J Neuromuscul Dis 2023; 10:885-896. [PMID: 37334614 PMCID: PMC10578289 DOI: 10.3233/jnd-230025] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/24/2023] [Indexed: 06/20/2023]
Abstract
Open bite (OB) is a common malocclusion in individuals with orofacial dysfunction and syndromes, especially in neuromuscular diseases. OBJECTIVES The objectives were to explore the prevalence of OB in myotonic dystrophy type 1 (DM1) and Duchenne muscular dystrophy (DMD) and to create and compare orofacial dysfunction profiles. METHODS In this database study, 143 individuals with DM1 and 99 with DMD were included. The Mun-H-Center questionnaire and observation chart were used together with the Nordic Orofacial Test -Screening (NOT-S) to create orofacial dysfunction profiles. OB was categorised as: lateral (LOB); anterior (AOB); severe anterior (AOBS); or both types of anterior OB (AOBTot). Descriptive and multivariate statistics were used to compare the OB prevalence and to study associations with orofacial variables, respectively. RESULTS There was a statistically significant difference in OB prevalence between the DM1 (37%) and DMD (49%) groups (p = 0.048). LOB was seen in < 1% of DM1 and 18% of DMD. LOB was associated with macroglossia and closed mouth posture, AOB with hypotonic lips, and open mouth posture and AOBS with hypotonic jaw muscles. The orofacial dysfunction profiles showed similar patterns, although the mean NOT-S total scores for DM1 and DMD were 4.2±2.8 (median 4.0, min-max 1-8) and 2.3±2.0 (median 2.0, min-max 0-8), respectively. LIMITATIONS The two groups were not age- or gender-matched. CONCLUSION OB malocclusion is common in patients with DM1 and DMD and is associated with different types of orofacial dysfunction. This study highlights the need for multi-disciplinary assessments to support tailored treatment strategies that improve or sustain orofacial functions.
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Affiliation(s)
- Christina Havner
- Department of Orthodontics, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Mun-H-Center, Orofacial Resource Centre for Rare Diseases, Public Dental Service, Gothenburg, Sweden
| | - Anna Ödman Roussakis
- Mun-H-Center, Orofacial Resource Centre for Rare Diseases, Public Dental Service, Gothenburg, Sweden
| | - Lotta Sjögreen
- Mun-H-Center, Orofacial Resource Centre for Rare Diseases, Public Dental Service, Gothenburg, Sweden
- Department of Health and Rehabilitation, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anna Westerlund
- Department of Orthodontics, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Hammad T, Moussa H, Marzouk W, Ismail HA. Effect of maxillary and mandibular extrusion arches on dentoskeletal changes in adults with anterior open bite: a quantitative analysis. Angle Orthod 2023; 93:26-32. [PMID: 36066246 DOI: 10.2319/021922-155.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 07/01/2022] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVE To quantify dentoskeletal changes accompanying the use of extrusion arches during the treatment of anterior open bite (AOB) in adults. MATERIALS AND METHODS A total of 23 adult patients with an AOB of -3.05 mm ± 1.27 mm were treated with upper and lower extrusion arches after the alignment phase. Lateral cephalograms were taken before placement of the extrusion arch, immediately after closure of the open bite (T2), and at the end of orthodontic treatment (T3). Data were statistically analyzed using repeated-measures analysis of variance and the Bonferroni post hoc test for pairwise comparisons (α = 0.05). RESULTS Successful closure of AOB, with an overall change in overbite of 4.73 ± 1.93 mm, was achieved in an average of 3.8 months and remained stable at T3. Upper and lower incisors were significantly extruded by 2.05 mm ± 0.72 mm and 2.54 mm ± 1.63 mm, respectively, and significantly retroclined by 6.36° ± 1.63° and 8.45° ± 3.83°, respectively, with a resultant increase in the interincisal angle of 12.80° ± 2.09°. Statistically significant intrusion and mesial tipping (P < .001) of the maxillary and mandibular first molars were observed at T2. Dentoskeletal changes remained stable at T3, except for a significant reduction of the mesial tipping of the maxillary and mandibular first molars. CONCLUSIONS The combined use of maxillary and mandibular extrusion arches resulted in significant favorable dentoskeletal changes that led to the successful closure of AOB during a short duration of treatment.
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da Motta TP, Owens J, Abreu LG, Debossan SAT, Vargas-Ferreira F, Vettore MV. Malocclusion characteristics amongst individuals with autism spectrum disorder: a systematic review and meta-analysis. BMC Oral Health 2022; 22:341. [PMID: 35948958 PMCID: PMC9367144 DOI: 10.1186/s12903-022-02366-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 07/22/2022] [Indexed: 11/17/2022] Open
Abstract
Background To estimate the prevalence of malocclusion in individuals with autism spectrum disorders (ASD) and to assess the relationship between ASD and malocclusion.
Methods We searched electronic databases including PubMed, Scopus, Web of Science, Cochrane, Embase, SciELO LILACS, Proquest, OpenGrey and Google Scholar. There were no language or publication dates restrictions. Two researchers independently performed selection, data extraction and quality assessment. Quality assessment and risk of bias were evaluated through the Newcastle–Ottawa scale and ROBINS-E tool. Meta-analyses using random effect models were used to estimate pooled measures of prevalence of malocclusion characteristics in individuals with ASD and pooled odds ratio (OR) on the relationship between ASD and malocclusion characteristics. Subgroup meta-analyses were conducted according to children and adolescents, history of orthodontic treatment, and occurrence of other syndromes and medical conditions. Results Searching identified 5549 papers with 238 were selected for full assessment. Eighteen cross-sectional studies were included according to inclusion criteria. Of them, eleven studies were considered of moderate quality. A judgement of critical risk of bias occurred for thirteen studies. The most prevalent malocclusion characteristics in individuals with ASD were crowding (33%; 95% CI 22 to 44%) and increased maxillary overjet (39%; 95% CI 23 to 54%). Individuals with ASD had higher odds of Angle’s Class II (OR 1.92; 95% CI 1.36 to 2.72), Angle’s Class III (OR 2.33; 95% CI 1.29 to 4.23), open bite (OR 1.96; 95% CI 1.21 to 3.16), and increased maxillary overjet (OR 1.53; 95% CI 1.06 to 2.21) than individuals without ASD. Conclusions Angle’s Class II, Angle’s Class III, anterior open bite and increased maxillary overjet were more prevalent in individuals with ASD than those without ASD. Further high-quality studies are needed.
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Affiliation(s)
- Thiago Peixoto da Motta
- Department of Social and Preventive Dentistry, School of Dentistry, Federal University of Minas Gerais, Av. Antônio Carlos, 6627 - Pampulha, Belo Horizonte, MG, CEP 312270-901, Brazil
| | - Janine Owens
- NIHR Applied Research Collaborative, Greater Manchester (NIHR ARC GM), Faculty of Biology, Medicine and Health, Division of Nursing, Midwifery and Social Work, Jean McFarlane Building, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Lucas Guimarães Abreu
- Department of Child and Adolescent Oral Health, School of Dentistry, Federal University of Minas Gerais, Av. Antônio Carlos, 6627 - Pampulha, Belo Horizonte, MG, CEP 312270-901, Brazil
| | - Suélen Alves Teixeira Debossan
- Department of Social and Preventive Dentistry, School of Dentistry, Federal University of Minas Gerais, Av. Antônio Carlos, 6627 - Pampulha, Belo Horizonte, MG, CEP 312270-901, Brazil
| | - Fabiana Vargas-Ferreira
- Department of Social and Preventive Dentistry, School of Dentistry, Federal University of Minas Gerais, Av. Antônio Carlos, 6627 - Pampulha, Belo Horizonte, MG, CEP 312270-901, Brazil
| | - Mario Vianna Vettore
- Department of Health and Nursing Sciences, Faculty of Health and Sports Sciences, University of Agder, Campus Kristiansand, Universitetsveien 25, 4630, Kristiansand, Norway.
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Roosevelt-Silva B, Gustavo-Chab P, Fernando-Pedrin-Carvalho F, José-Roberto-Magalhães B, Guilherme J, Raquel-Conceição F. Contextual and Individual Determinants of Anterior Open Bite in Adolescents. Int Dent J 2022; 73:128-135. [PMID: 35931560 PMCID: PMC9875233 DOI: 10.1016/j.identj.2022.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 06/20/2022] [Accepted: 07/01/2022] [Indexed: 01/29/2023] Open
Abstract
OBJECTIVE Studying the broader determinants of anterior open bite (AOB) may guide more equitable policies.This study estimates the prevalence of AOB in Brazilian adolescents and its association with contextual and individual determinants. METHODOLOGY The data for dentofacial anomalies in 15- to 19-year-olds from the National Oral Health Survey SBBrasil 2010 were analysed (N = 4748). AOB was based on the Dental Aesthetic Index (AOB = 0; AOB > 0); the contextual variables were the Human Development Index (HDI) and the Gini Index (2010). The individual sociodemographic variables included sex (male, female), self-reported skin colour/race (white, black, brown, and indigenous + yellow), family income (≥4 minimum wage [MW]; 0-3 MW), and educational attainment (ideal, delayed). The individual clinical variables were decayed, missing, and filled teeth (DMFT) (0, ≥1), first permanent molar loss (0, ≤3, 4), and molar relationship (normal, half cusp, full cusp). Multilevel logistic regression models with random intercepts and fixed slopes were used to estimate odds ratios (ORs) and confidence intervals (95% CIs). RESULTS AOB prevalence in Brazil was 8.78% (95% CI, 6.85-11.20) at 15 to 19 years of age. The lowest prevalence was in São Luis (2.63%; 95% CI, 0.58-11.03) and the highest was in João Pessoa (29.85%; 95% CI, 15.93-48.85), both capitals of the northeast Brazilian region. A higher prevalence of AOB (OR, 1.71; 95% CI, 1.04-2.80) was observed in municipalities with a lower HDI. Adolescents who declared their skin colour black, with lower family income, with delayed education, with DMFT ≥ 1, who lost 4 permanent first molars, and who had a complete molar cusp relationship were more likely to have AOB. CONCLUSIONS AOB varied amongst Brazilian municipalities. The HDI plays an important role in the prevalence of AOB; individual social determinants have also been associated with AOB malocclusion in adolescents.
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Affiliation(s)
- Bastos Roosevelt-Silva
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Bauru, São Paulo, Brasil,Corresponding author. Alameda Doutor Octávio Pinheiro Brisolla, 9-75, Bauru, SP, Brasil, 17012-901.
| | - Pistelli Gustavo-Chab
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Bauru, São Paulo, Brasil
| | | | | | - Janson Guilherme
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Bauru, São Paulo, Brasil
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Chang PE, Kim JY, Jung HD, Park JJ, Choi YJ. Posttreatment stability of an anterior open-bite by molar intrusion compared with 2-jaw surgery - a retrospective study. Clin Oral Investig 2022; 26:6607-6616. [PMID: 35821135 DOI: 10.1007/s00784-022-04615-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 07/04/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVES This study aimed to compare post-treatment stability in patients with anterior open-bite (AOB) between those treated surgically (orthognathic 2-jaw surgery) and non-surgically (molar intrusion using orthodontic miniscrews). MATERIALS AND METHODS All subjects had initial overbite (OB) < -1 mm and lateral cephalograms taken before treatment (T0), immediately after AOB correction (T1), after orthodontic treatment (T2), and at least 1 year after treatment (T3). The non-surgical group was enrolled retrospectively; then, the surgical group was matched by OB, sex, and age to the non-surgical group (n = 21 each). Changes in cephalometric measurements during treatment (T1-T0), finishing (T2-T1), and retention (T3-T2) periods were compared between two groups. RESULTS OB increased by 4.5-5.1 mm during the treatment period with 3.3 mm upward movement of the maxillary first molar (U6) in both groups. Changes in OB were not significantly different between the groups: 0.5-0.9 mm increase during the finishing period but 1.0 mm decrease during the retention period (P > 0.05). U6 moved 0.5 mm downward in non-surgical group and 0.1 mm upward in the surgical group during the finishing period, and 1.0 mm and 0.4 mm downward in the non-surgical and surgical groups, respectively, during the retention period. CONCLUSIONS Post-treatment stability of AOB was similar for surgical and non-surgical methods (76.8 - 78.7%), although U6 moved more downward in the non-surgical group than in the surgical group. CLINICAL RELEVANCE AOB without severe skeletal deformity can be treated by either molar intrusion or orthognathic surgery with similar treatment outcome and stability.
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Affiliation(s)
- Pi En Chang
- Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jun-Young Kim
- Department of Oral and Maxillofacial Surgery, Yonsei University College of Dentistry, Seoul, Republic of Korea
| | - Hwi-Dong Jung
- Department of Oral and Maxillofacial Surgery, Yonsei University College of Dentistry, Seoul, Republic of Korea
| | - Jung Jin Park
- Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.,Department of Orthodontics, Dental Hospital, Kyung Hee University Hospital at Gangdong, Seoul, South Korea
| | - Yoon Jeong Choi
- Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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Teixeira EC, das Neves BM, Castilho T, Silva Ramos T, Flaviana A, Carelli J, Kuchler EC, Germano FN, Alves Antunes LA, Antunes LS. Evidence of Association between MTRR and TNF-α Gene Polymorphisms and Oral Health-Related Quality of Life in Children with Anterior Open Bite. J Clin Pediatr Dent 2022; 46:249-58. [PMID: 35830630 DOI: 10.17796/1053-4625-46.3.12] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
UNLABELLED Genetic polymorphisms could explain the inter-individual differences in the oral health-related quality of life (OHRQoL) of children with anterior open bite (AOB). OBJECTIVE To assess the impact of AOB on OHRQoL in children and to evaluate whether MTR (rs1805087), MTRR (rs1801394), TGFβ1 (rs1800469) and TNF-α (rs1799964, rs1799724 and rs1800629) genes are potential biomarkers for OHRQoL in children with AOB. STUDY DESIGN A cross-sectional study was performed with 173 children aged between 2-6 years. The Brazilian version of Early Childhood Oral Health Impact Scale (ECOHIS) was applied. Genetic polymorphisms were analyzed using real-time PCR. Mann-Whitney U-test and Chi-square were used. RESULTS The overall mean ECOHIS scores were 5.49 (SD= 5.72) and 3.45 (SD = 4.49) (p < 0.01) in the AOB and control groups, respectively. Children with the CC genotype of TNF-α (rs1799724) had a significantly higher psychological QoL level. The MTRR AA genotype group showed a lower QoL level in the child subscale (p = 0.006), function (p = 0.017), and psychological (p = 0.006) domains. There was no significant difference between OHRQoL and the genetic polymorphisms in MTR and TGFβ1. CONCLUSIONS Genetic polymorphisms in TNF-α and MTRR are associated with the impact on the OHRQoL in children with AOB.
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Tou GADA, Diniz IMA, Ferreira MVL, Mesquita RAD, Yamauti M, Silva TA, Macari S. Evaluation of periodontal parameters and gingival crevicular fluid cytokines in children with anterior open bite receiving passive orthodontic treatment with a spur. Korean J Orthod 2022; 52:142-149. [PMID: 35321953 PMCID: PMC8964467 DOI: 10.4041/kjod.2022.52.2.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 09/01/2021] [Accepted: 10/22/2021] [Indexed: 11/22/2022] Open
Abstract
Objective To evaluate clinical parameters and gingival crevicular fluid (GCF) cytokines in children with anterior open bite receiving passive orthodontic treatment with spurs. Methods Twenty children with indications for interceptive orthodontic treatment, an anterior open bite, and good oral hygiene and periodontal health were included in this study. GCF samples were collected from the mandibular and maxillary central incisors before (baseline) and 24 hours and 7 days after spur bonding. Clinical and periodontal examinations and cytokine analyses were performed. Results At 7 days after spur attachment, gingival bleeding in the mandibular group was increased relative to that in the maxillary group. Visible plaque was correlated with gingival bleeding at 7 days and the GCF volume at 24 hours after spur attachment. Compared with those at baseline, interleukin (IL)-8 levels in the maxillary group and IL-1β levels in both tooth groups increased at both 24 hours and 7 days and at 7 days, respectively. At 24 hours, IL-8, IL-1β, and IL-6 levels were higher in the maxillary group than in the mandibular group. Cytokine production was positively correlated with increased GCF volume, but not with gingival bleeding, visible plaque, or probing depth. Conclusions Although orthodontic treatment with spurs in children resulted in increased gingival bleeding around the mandibular incisors, IL levels were higher around the maxillary incisors and not correlated with periodontal parameters. Increased cytokine levels in GCF may be associated with the initial tooth movement during open bite correction with a passive orthodontic appliance in children. Open bite
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Affiliation(s)
- Gabriel Antônio Dos Anjos Tou
- Department of Restorative Dentistry, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ivana Márcia Alves Diniz
- Department of Restorative Dentistry, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Marcus Vinicius Lucas Ferreira
- Department of Restorative Dentistry, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ricardo Alves de Mesquita
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mônica Yamauti
- Department of Restorative Dentistry, Division of Oral Health Science, Graduate School and Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Tarcília Aparecida Silva
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Soraia Macari
- Department of Restorative Dentistry, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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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] [What about the content of this article? (0)] [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] [What about the content of this article? (0)] [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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Fouda AS, Afify AK, Aboulfotouh MH, Attia KH, Abouelezz AM, Elkordy SA. Dental arch changes after anterior open bite treatment in the mixed dentition produced by miniscrew-supported palatal crib vs conventional fixed palatal crib. Angle Orthod 2022; 92:487-496. [PMID: 35130348 DOI: 10.2319/082321-659.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 12/01/2021] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To evaluate the dental arch changes produced by the miniscrew-supported palatal crib (MSPC) and the conventional fixed palatal crib (CFPC) after the treatment of patients with anterior open bite (AOB) attributed to the tongue-thrusting habit in the mixed dentition stage. MATERIALS AND METHODS A total of 26 children aged 8 to 11 years with an AOB were randomly distributed into two equal groups; the MSPC group was treated using a palatal crib supported by two miniscrews inserted paramedially, whereas the CFPC group was treated using a conventional fixed palatal crib soldered to bands. Digital models were obtained pretreatment and after a follow-up duration of 9 months. RESULTS The MSPC group included 12 participants (9 girls and 3 boys; mean age, 9.4 ± 0.75 years), and the CFPC group included 12 participants (10 girls and 2 boys; mean age, 9.0 ± 0.73 years). The amount of AOB closure was similar in both groups: 3.97 ± 1.44 mm in the MSPC group and 3.97 ± 0.89 mm in the CFPC group. There was significant mesial movement of the maxillary first molar in the CFPC (-1.42 ± 0.99 mm) compared with the MSPC group (-0.53 ± 0.32 mm). CONCLUSIONS Both appliances resulted in similar improvement in the amount of AOB closure. There was significantly more mesial movement of the maxillary first molars in the CFPC group compared with the MSPC group.
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Masoud AI, Tsay TP. Multiloop edgewise archwire treatment for a patient with a severe anterior open bite and amelogenesis imperfecta. Angle Orthod 2022; 92:137-147. [PMID: 34533566 DOI: 10.2319/032221-228.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 07/01/2021] [Indexed: 11/23/2022] Open
Abstract
Amelogenesis imperfecta is a rare hereditary disorder that affects dental enamel and is often associated with an anterior open bite. Orthodontic treatment of a 16-year-old female patient with hypocalcified amelogenesis imperfecta and a 9-mm anterior open bite was presented. Radiographic examination revealed a steep mandibular plane angle, an increased lower face height, a Class II skeletal pattern, and a convex profile. Additionally, the patient had stainless steel crowns on all upper and lower posterior teeth and composite veneers on the upper anterior teeth. The patient was treated nonsurgically using a multiloop edgewise archwire (MEAW). MEAW mechanics allowed for successful correction of the anterior open bite, with significant reduction in the mandibular plane angle and improvement in the patient's profile. No fixed retainers were used, and the results remained stable 78 months after removal of orthodontic appliances. MEAW mechanics should be considered for patients with large anterior open bites, although this technique requires excellent patient compliance.
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22
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Rocabado M, Gutierrez R, Gutierrez MF, Gutierrez MJ. Case report: Anterior open bite correction treatment by dental treatment and physical therapy through craniocervical mandibular and occlusal stabilization. Cranio 2021:1-6. [PMID: 34890299 DOI: 10.1080/08869634.2021.2014168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND The opinion on whether a patient with an anterior open bite should be treated surgically or not is controversial. These patients generally suffer from associated discomfort due to their occlusal instability and musculoskeletal pain. CLINICAL PRESENTATION A 60-year-old woman visited the clinic with dental mobility of her upper central incisors as her chief complaint. She had a severe anterior open bite, with a history of continuous grinding and multiple dental restorations in poor condition. Additionally, she suffered neck pain with movement restrictions. CONCLUSION Dentists can evaluate and treat patients with an anterior open bite using this integrative model (physical therapy/dentistry) as a possible alternative as part of the treatment for anterior open bite patients.
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Affiliation(s)
- Mariano Rocabado
- Facultad de Ciencias de la Rehabilitación, Universidad Andrés Bello, Santiago, Chile
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Foumou-Moretti N, Trentesaux T, Bocquet E, Delfosse C, Marquillier T. [Amelogenesis imperfecta and anterior open bite: how to optimize patient management? A review of the literature]. Orthod Fr 2021; 92:421-30. [PMID: 34911673 DOI: 10.1684/orthodfr.2021.64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
INTRODUCTION Amelogenesis imperfecta is a genetic disease, characterized by a structural defect of the enamel and has variable clinical expressions. It can be isolated or associated as part of a syndrome. Three clinical forms exist: hypoplastic, hypomature and hypomineralized. DISCUSSION Enamel fragility involves dentin exposure and dental hypersensitivity as frequent consequences. Some severe forms are mainly associated with an anterior open bite. The care of these patients constitutes a real challenge for the dentist. Materials et Methods: A literature review was carried out using the PubMed, Web of Science and Scopus interfaces over the past ten years in order to highlight the different treatment options available. CONCLUSION From conservative to surgical treatment, it is necessary to develop a collaboration between the orthodontist and the pediatric dentist in order to offer multidisciplinary care adapted to the patient's needs.
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Avrella MT, Zimmermann DR, Andriani JSP, Santos PS, Barasuol JC. Prevalence of anterior open bite in children and adolescents: a systematic review and meta-analysis. Eur Arch Paediatr Dent 2021; 23:355-364. [PMID: 34767190 DOI: 10.1007/s40368-021-00683-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 10/29/2021] [Indexed: 12/01/2022]
Abstract
PURPOSE Anterior open bite is defined by the lack of incisal contact between the teeth in centric relation. The aim of this study was to determine the prevalence of anterior open in children and adolescents. METHODS This systematic review included a search in the databases: PubMed, Scopus, Web of Science, LILACS, Google Scholar, and ProQuest. The acronym PECOS was considered: (P) children and adolescents, (E) presence of anterior open bite, (C) not applicable, (O) prevalence, and (S) observational studies. The risk of bias assessment was carried out using the Joanna Briggs Institute Critical Appraisal Checklist for Studies Reporting Prevalence Data. The prevalence meta-analyses were performed using MedCalc® software. The certainty of the evidence was determined with the GRADE approach. RESULTS 26 studies were included. Eleven studies were judged at low, seven at moderate, and eight at high risk of bias. The overall prevalence of anterior open bite was 16.52% (95% CI 12.34-21.17) in children and adolescents. The prevalence was 19.38% (95% CI 13.77-25.69) in South America. The prevalence of anterior open bite was 22.67% (95% CI 16.56-29.43) among females and 16.99% (95% CI 11.77-22.94) among males. The prevalence of anterior open bite was 18.84% (95% CI 13.88-24.38) in the primary dentition, and 14.26% (95% CI 7.67-22.46) in the mixed dentition. The overall certainty of the evidence was very low. CONCLUSION The overall prevalence of anterior open bite was 16.52% in children and adolescents aged 2-16 years. Giving the limitations of a prevalence meta-analysis, the extrapolation of the results should be cautious. REGISTRATION NUMBER CRD42020183162, 10 July 2020.
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Affiliation(s)
- M T Avrella
- Faculdade CNEC, Santo Ângelo, Rio Grande do Sul, Brazil
| | | | - J S P Andriani
- Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - P S Santos
- Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - J C Barasuol
- Faculdade CNEC, Santo Ângelo, Rio Grande do Sul, Brazil.
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Akl HE, El-Beialy AR, El-Ghafour MA, Abouelezz AM, El Sharaby FA. Root resorption associated with maxillary buccal segment intrusion using variable force magnitudes. Angle Orthod 2021; 91:733-742. [PMID: 34270689 PMCID: PMC8549556 DOI: 10.2319/012121-62.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 05/01/2021] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To compare the root resorption resulting from miniscrew-supported maxillary posterior dentoalveolar intrusion using two different force magnitudes. MATERIALS AND METHODS Adult patients with skeletal open bite, indicated for maxillary posterior dentoalveolar intrusion, were recruited and randomly assigned to the comparison or intervention groups. The comparison group involved applying 200 g of intrusive force per segment, which measured 20 g per root, while this force was 400 g per segment in the intervention group, measuring 40 g per root. RESULTS Twenty participants were included in the final analysis after 2 patients dropped out, 1 in each group, to end up with 10 subjects (200 roots) per group. There was statistically significant root resorption of 0.84 ± 0.96 mm and 0.93 ± 1.00 mm in the comparison and the intervention groups, respectively. However, there was no statistically significant difference between the groups. CONCLUSIONS Root resorption inevitably took place in association with orthodontic intrusion. However, increasing the magnitude of the intrusive force did not increase the amount of root resorption, either statistically or clinically.
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Abstract
The aim and objective of this study is to report the recurrence of the treatment of the anterior open bite after 5 years of treatment. A female patient aged 8 years 6 months old had a negative vertical crossing of -4.7 mm. Early treatment with a fixed palatal grid was performed for 1 year. At the end of the treatment, the vertical overpass was 1.1 mm and after 2 years of control, the vertical overpass remained positive with 1.7 mm showing the stability of the treatment. After 5 years, and due to the sucking and lingual interposition habit, there was a recurrence of the open bite. Interdisciplinary follow-up is extremely important to eliminate the factors responsible for the origin of deleterious habits, thus solving the changes resulting from these habits and providing long-term stability. How to cite this article: Justulin AF, Rossato PH, Conti ACCF, et al. Relapse of Anterior Open Bite: A Case Report. Int J Clin Pediatr Dent 2021;14(1):140-144.
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Affiliation(s)
- Aline F Justulin
- Department of Orthodontics, University of North Paraná, Londrina, Brazil
| | - Paulo H Rossato
- Department of Orthodontics, University of North Paraná, Londrina, Brazil
| | - Ana Ccf Conti
- Department of Orthodontics, University of North Paraná, Londrina, Brazil
| | - Marcio R Almeida
- Department of Orthodontics, University of North Paraná, Londrina, Brazil
| | | | - Thais Mf Fernandes
- Department of Orthodontics, University of North Paraná, Londrina, Brazil
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Le Keux F, Frapier L. Lingual treatment of an adult patient with an iatrogenic class II anterior open bite: Report of a case with a non-surgical orthodontic approach. Int Orthod 2021; 19:170-181. [PMID: 33573882 DOI: 10.1016/j.ortho.2021.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 01/21/2021] [Accepted: 01/21/2021] [Indexed: 11/18/2022]
Abstract
INTRODUCTION The treatment of adult patients presenting an open bite is a real challenge for orthodontists due to the complexity of the malocclusion. The diagnosis is essential to identify aetiological factors and establish the best aesthetic and functional therapeutic prognosis. Among the aetiological factors, iatrogenic treatment history has to be considered. It is the case here where a regrettable unsuitable splint for bruxism treatment forced an open bite to appear. MATERIAL AND METHOD This case report presents an adult women with a large open bite due to an occlusal splint not covering the last mandibular molars. It was not really a vertical skeletal excess but more a mandibular clockwise rotation linked to the molar extrusions, which created a dento-alveolar open bite and labio-mental contractions during lip closure. Treatment objectives were the intrusion of the third and second molars, the extrusion of incisors to obtain a counter clockwise mandibular rotation. The patient was treated with an aesthetic and customized lingual appliance with no orthognathic surgery. A physiotherapy was followed by the patient when the open bite was closed in order to facilitate and stabilize the intercuspation. RESULTS A complete closing of the open bite was reached after two years of treatment. The superimposition showed the anticlockwise mandibular rotation. The levelling with posterior intrusion and the incisors extrusion reduced the vertical dimension with success. After 3years of retention, the occlusal stability was obtained. CONCLUSION The intrusion of the molars associated with a counter clockwise mandibular rotation made it possible the incisor extrusion. The occlusal balance with physiotherapy and patient compliance maintained the closure. In this way, the iatrogenic effects of the poorly designed bite splint were repaired.
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Affiliation(s)
- Fanny Le Keux
- University of Montpellier I, Department of Orthodontics, Montpellier, France.
| | - Laure Frapier
- University of Montpellier I, Department of Orthodontics, Montpellier, France
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Gutiérrez DAR, Garzón JS, Franco JQ, Botero-Mariaca P. Anterior open bite and its relationship with dental arch dimensions and tongue position during swallowing and phonation in individuals aged 8-16 years: A retrospective case-control study. Int Orthod 2021; 19:107-16. [PMID: 33518486 DOI: 10.1016/j.ortho.2020.12.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To determine the relationship between AOB and factors such as dental arch dimensions and tongue position during swallowing and phonation. MATERIAL AND METHODS A case-control study was performed in two groups: 132 children with Anterior Open Bite (AOB) and 132 with normal vertical overbite (NVO), aged 8-16 years selected from the records taken by a previous study from five public schools. Dental arch dimensions were assessed through digitalized study models. Swallowing was evaluated using the Payne technique, and phoniatric assessment included an adaptation of the articulation test used to describe phonemes. STATISTICAL ANALYSIS Chi-Square or Fisher's exact test for comparisons between qualitative variables and the Mann Whitney or T-student were applied to compare the dental arch dimensions according to bite type. A logistic regression model was applied to control the effect of confusion between independent variables and to describe its simultaneous effect on the type of bite. RESULTS Intercanine, interpremolar and intermolar widths showed higher values in AOB patients with a mean deviation (MD) of 0.536 (P=0.031), 0.60 (P=0.043) and 1.15, (P<0.001) respectively. Distortions caused by tongue interposition and thrust, tongue protrusion during swallowing, mandibular arch intermolar width, total maxillary arch length, maxillary arch perimeter, and posterior arch depth accounted for 64.6% of AOB and allowed for correct predictions in 83.8% of the cases observed in the study population. CONCLUSIONS A significant association between tongue position and function, as well as alterations such as tongue interposition and thrust during swallowing and phonation in individuals with AOB, were observed. There is a relationship between AOB and the presence of a wider mandibular arch and a narrower, longer, and deeper maxillary arch.
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Wagner L, Dellinger A, Siebert T, Gebeile-Chauty S. [Magnets in orthodontics : which indications, which effects ? A review of the literature]. Orthod Fr 2020; 91:373-92. [PMID: 33372663 DOI: 10.1684/orthodfr.2020.26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The first publication on the use of magnets in dentistry for stabilizing prosthetics on implants dates back to 1953. Clinical development in orthodontics, without having experienced a real boom, has increased over the past ten years, in parallel with the improvement of the device. The objective of this review of the literature is to synthesize clinical applications and reported iatrogenic effects. A systematic review of the international literature from the Pubmed and Cochrane databases from 1999 to July 2018 was conducted which resulted in 36 articles. The factors studied are the indications and contraindications, the means or procedure, as well as the iatrogenic effects. Original cases are presented. The correction of infraclusions is the main indication, followed by the correction of anteroposterior malocclusions and then the correction of over-erupted teeth. Traction of an impacted teeth and diastema closure have not been found in recent publications probably because of the low benefit-risk ratio. The future no longer seems to be buried magnets or left in the long term in the mouth considering there seems to be concerns in terms of toxicity (or even the risk in terms of vital prognosis). The magnets could offer interesting perspectives to manage the current limits of the aligners, the movements of anterior egression, rotation and previous torque being still problematic...
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Hichijo N, Kudo Y, Tanaka E. Orthodontic treatment of open bite involved in diffuse hypercementosis: A case report. J Am Dent Assoc 2020; 152:166-175. [PMID: 33203553 DOI: 10.1016/j.adaj.2020.08.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/16/2020] [Accepted: 08/06/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Open bite is considered one of the most complicated malocclusions in orthodontic treatment. In this study, the authors successfully treated total open bite involved in hypercementosis using orthodontic miniscrews. CASE DESCRIPTION A woman aged 25 years 8 months had total open bite. Her occlusal contact at the maximum intercuspation was present at the right second molars. A panoramic radiograph showed diffuse hypercementosis. The titanium miniscrews were interradicullay implanted between the first and second molars, and intrusion force was applied for 14 months. After active treatment, the patient's maxillary first molars showed about 1.6-millimeters of intrusion, resulting in counterclockwise mandibular rotation. Her acceptable occlusion was maintained after 1.0-year retention. PRACTICAL IMPLICATIONS Miniscrews might be useful tool to improve malocclusion involved in diffuse hypercementosis though they are considered to be difficult to move and brought on ankylosis.
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de Brito Vasconcelos J, de Almeida-Pedrin RR, Poleti TMFF, Oltramari P, de Castro Conti ACF, Bicheline MHB, Lindauer SJ, de Almeida MR. A prospective clinical trial of the effects produced by the extrusion arch in the treatment of anterior open bite. Prog Orthod 2020; 21:39. [PMID: 33078213 PMCID: PMC7573098 DOI: 10.1186/s40510-020-00339-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/01/2020] [Indexed: 11/22/2022] Open
Abstract
Aim To evaluate the maxillary dentition effects of the extrusion arch for anterior open bite (AOB) correction in mixed dentition patients. Materials and methods Fourteen subjects with an initial mean age of 9.17 ± 1.03 years presenting with dentoalveolar AOB (mean − 1.28 ± 1.46 mm) and normal facial pattern (FMA = 25.76°) were treated with an extrusion arch. The mean treatment period was 7.79 ± 2.58 months. Lateral cephalograms and dental models were taken before (T0) and after the correction of AOB (T1). Data were analyzed using paired t test to evaluate differences between T0 and T1. For all tests, a significance level of P < .05 was used. Results All patients achieved positive overbite at T1, with a mean increase of 3.07 mm. The maxillary incisors extruded 1.94 mm. Retroclination of the maxillary incisors (− 6.15°) and an increase in the interincisal angle (5.57°) were observed. There was a significant decrease in the distance between the incisal edge of the maxillary incisors and the molars (− 2.21 mm). There was significant mesial tipping of the maxillary molar (− 11.49°). Significant reductions of overjet (− 1.65 mm), arch perimeter (− 3.02 mm), and arch length (− 2.23 mm) were noted. The transverse maxillary intermolar distance did not change significantly. Conclusions The use of a maxillary extrusion arch was effective in the treatment of AOB. Overbite increased due to incisor extrusion, as well as retroinclination and overjet reduction. However, side effects, such as mesial molar tipping and decreases in arch perimeter and length might occur.
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Affiliation(s)
| | | | | | - Paula Oltramari
- Department of Orthodontics, Unniversity of North Paraná: (UNOPAR), Londrina, PR, Brazil
| | | | | | - Steven J Lindauer
- Department of Orthodontics, School of Dentistry, Virginia Commonwealth University, Richmond, VA, USA
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González Espinosa D, de Oliveira Moreira PE, da Sousa AS, Flores-Mir C, Normando D. Stability of anterior open bite treatment with molar intrusion using skeletal anchorage: a systematic review and meta-analysis. Prog Orthod 2020; 21:35. [PMID: 32888097 PMCID: PMC7474024 DOI: 10.1186/s40510-020-00328-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 07/15/2020] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVES The aim of this systematic review and meta-analysis is to assess the degree of stability of anterior open bite (AOB) treatment performed through the molar intrusion supported with skeletal anchorage at least 1 year posttreatment. METHODS This study was registered in PROSPERO (CRD42016037513). A literature search was conducted to identify randomized (RCT) or non-randomized clinical trials based including those considering before and after design. Data sources were electronic databases including PubMed, Cochrane Library, Science Direct, Google Scholar, Scopus, Lilacs, OpenGrey, Web of Science, and ClinicalTrials.gov . The quality of evidence was assessed through the JBI tool and certainty of evidence was evaluated through the GRADE tool. Random effects meta-analysis was conducted when appropriate. RESULTS Six hundred twenty-four articles met the initial inclusion criteria. From these, only 6 remained. The mean posttreatment follow-up time was 2.5 years (SD = 1.04). The overbite showed a standardized mean relapse of - 1.23 mm (95% CI - 1.64, - 0.81, p < 0.0001). Maxillary and mandibular incisors presented a non-significant mean relapse, U1-PP - 0.04 mm (95% CI - 0.55, 0.48) and L1-MP - 0.10 mm (95% CI - 0.57, 0.37). Molar intrusion showed a relapse rate around 12% for the maxillary molars and a 27.2% for mandibular molars. CONCLUSION The stability of AOB through molar intrusion using TADs can be considered relatively similar to that reported to surgical approaches, since 10 to 30% of relapse occurs both in maxillary and mandibular molars. The level of certainty ranged between very low and low. RCTs reporting dropout during the follow-up are in dire need.
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Affiliation(s)
- Daybelis González Espinosa
- Department of Orthodontics, Faculty of Dentistry, Dental School, Federal University of Pará (UFPA), Augusto Correa St., no. 1, Belém, Pará, 66075-110, Brazil.,Facultad de Odontologia, Universidad Católica Redemptoris Mater, Managuá, Nicaragua
| | - Paulo Eliezer de Oliveira Moreira
- Department of Orthodontics, Faculty of Dentistry, Dental School, Federal University of Pará (UFPA), Augusto Correa St., no. 1, Belém, Pará, 66075-110, Brazil
| | - Amanda Silva da Sousa
- Department of Orthodontics, Faculty of Dentistry, Dental School, Federal University of Pará (UFPA), Augusto Correa St., no. 1, Belém, Pará, 66075-110, Brazil
| | - Carlos Flores-Mir
- Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - David Normando
- Department of Orthodontics, Faculty of Dentistry, Dental School, Federal University of Pará (UFPA), Augusto Correa St., no. 1, Belém, Pará, 66075-110, Brazil.
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Harris K, Ojima K, Dan C, Upadhyay M, Alshehri A, Kuo CL, Mu J, Uribe F, Nanda R. Evaluation of open bite closure using clear aligners: a retrospective study. Prog Orthod 2020; 21:23. [PMID: 32830306 PMCID: PMC7443419 DOI: 10.1186/s40510-020-00325-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/18/2020] [Indexed: 11/26/2022] Open
Abstract
Objectives To evaluate the dental and skeletal effects that occur in the correction of anterior open bite with clear aligners. Materials and method In this single-center retrospective study, the mechanism of anterior open bite closure using clear aligners (Invisalign, Align Technology, Santa Clara, CA, USA) was evaluated by cephalometric superimposition based on records of patients consecutively treated by a single, experienced Invisalign provider. Inclusion criteria consisted of anterior open bite (overbite < 0.5 mm), adult patients (18+) at the beginning of treatment, consecutive records, and good quality pre- and post-treatment records, where the required landmarks were clearly visible. Results A total of 45 patients were included for data analysis with a mean age of 30.73 ± 8.0 years and initial open bite of − 1.21 ± 1.15 mm. During treatment, the upper incisors showed significant (p < 0.05) retraction [U1-SN′(°) = − 10.91 ± 6.95°], [U1-SN′perp(mm) = − 2.57 ± 1.75 mm] and extrusion [U1-SN′(mm) = 1.45 ± 0.89 mm]. The lower incisors also showed significant retraction [IMPA(°) = − 3.73 ± 4.91°), (ΔL1-MP′perp (mm) = − 1.08 ± 1.59] and extrusion (ΔL1-MP′(mm) = 0.53 ± 0.74). Regarding molar position, no significant changes were noted in the anteroposterior position of the upper [ΔU6-SN′perp(mm) = 0.01 ± 1.08 mm] and lower molar [ΔL6-MP′perp(mm) = 0.03 ± 0.87 mm]; however, there was a statistically significant intrusion of the upper [ΔU6-SN′(mm) = − 0.47 ± 0.59 mm] and lower molar [ΔL6-MP′(mm) = − 0.39 ± 0.76 mm]. Conclusion Open bite closure with clear aligners occurred due to a combination of maxillary and mandibular incisor extrusion and maxillary and mandibular molar intrusion, with slight mandibular auto rotation. Significant retraction of maxillary and mandibular incisors was also observed with treatment. Clear aligners are effective in reducing/controlling the vertical dimension in open bite patients.
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Affiliation(s)
- Kayla Harris
- Division of Orthodontics, Department of Craniofacial Sciences, University of Connecticut School of Dental Medicine, Farmington, CT, USA
| | | | | | - Madhur Upadhyay
- Division of Orthodontics, Department of Craniofacial Sciences, University of Connecticut School of Dental Medicine, Farmington, CT, USA
| | - Abdulrahman Alshehri
- Division of Orthodontics, Department of Preventive Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Chia-Ling Kuo
- CICATS/Department of Community Medicine/Institute for System Genomics, University of Connecticut Health, Farmington, CT, USA
| | - Jinjian Mu
- CICATS/Department of Community Medicine/Institute for System Genomics, University of Connecticut Health, Farmington, CT, USA
| | - Flavio Uribe
- Division of Orthodontics, Department of Craniofacial Sciences, University of Connecticut School of Dental Medicine, Farmington, CT, USA.
| | - Ravindra Nanda
- Division of Orthodontics, Department of Craniofacial Sciences, University of Connecticut School of Dental Medicine, Farmington, CT, USA
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Akl HE, Abouelezz AM, El Sharaby FA, El-Beialy AR, El-Ghafour MA. Force magnitude as a variable in maxillary buccal segment intrusion in adult patients with skeletal open bite. Angle Orthod 2020; 90:507-515. [PMID: 33378495 PMCID: PMC8028465 DOI: 10.2319/082819-558.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 12/01/2019] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To compare the effects of two different force magnitudes on maxillary posterior segment intrusion using mini-screws. The null hypothesis was that there would be no difference between the two force magnitudes. MATERIALS AND METHODS Adult patients with skeletal open bite and a dental open bite ranging from 3 to 8 mm were recruited for this trial. The comparator group had 200 g of intrusive force applied for posterior segment intrusion, whereas 400 g of force was applied in the intervention group. Primary outcomes were the amount of posterior teeth intrusion and anterior open bite closure. RESULTS Twenty-two subjects were randomized to include 11 participants in each group. One participant dropped out in each group, leaving us with 10 subjects to be analyzed per group. There was statistically significant posterior teeth intrusion of 2.42 ± 2.06 and 2.26 ± 1.87 mm for the comparator and intervention groups, respectively, with no difference between them. Statistically significant open bite closure was achieved in both groups, measuring 2.24 ± 1.18 and 3.15 ± 1.06 mm in the comparator and intervention groups, respectively, with no difference between them. CONCLUSIONS Both the 200 g and 400 g intrusive forces yielded similar outcomes in terms of posterior teeth intrusion and anterior open bite closure.
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Vidal-Manyari PA, Arriola-Guillén LE, Jimenez-Valdivia LM, Dias-Da Silveira HL, Boessio-Vizzotto M. Upper airways evaluation in young adults with an anterior open bite: A CBCT retrospective controlled and cross-sectional study. Int Orthod 2020; 18:276-285. [PMID: 32199748 DOI: 10.1016/j.ortho.2020.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 02/23/2020] [Accepted: 02/24/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To compare the dimensions of the upper airway in young adults with anterior open bite versus matched individuals with an adequate overbite (control group) using different measurement approaches (linear, area, and volume measures). MATERIALS AND METHODS The sample included 137 cone-beam computed tomographies (CBCTs) of young adults (74 men and 63 women) divided into two groups: 47 CBCTs of individuals (mean age 27.89) with open bite (overbite depth indicator (ODI) 56.84°±9.48° and Frankfort mandibular plane angle (FMA) 31.21°±6.44°) and 90 CBCTs of individuals (mean age 26.87) without an open bite (ODI 62.24°±9.47°, FMA 26.79°±5.81°). Two trained and calibrated orthodontists made all linear, area, and volume measurements on the CBCT records of the upper airways using Planmeca Romexis software. The Mann-Whitney U-test, chi-squared test, and multiple linear regression were applied. Significance was set at P<0.05. RESULTS There were no differences in linear or volume measurements between groups, but there was a greater area in the open bite group (greater mean difference between groups 928.3 mm2) than the control group. No variable influenced nasopharyngeal airway volume, but ANB angle affected oropharyngeal airway volume (β=-623.87) and total airway volume (β=-651.48). CONCLUSIONS Orthodontists should be aware that the airways diagnosis can vary depending on the measurement approach used, the volumetric method being the gold standard. The pharyngeal airway volume was similar in individuals with vs. without an open bite and is mainly influenced by ANB angle in both groups.
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Affiliation(s)
| | | | | | | | - Mariana Boessio-Vizzotto
- Universidade Federal do Rio Grande do Sul, Division of Oral radiology, Faculty of Dentistry, Porto Alegre, Brazil
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Flores-Ysla A, Arriola-Guillén LE, Rodríguez-Càrdenas YA, Ruíz-Mora GA, Aliaga-Del Castillo A, Janson G. Skeletal open bite cranial base characteristics in young Latin-American individuals with class I, II and III malocclusions: An observational study. Int Orthod 2020; 18:237-245. [PMID: 32037207 DOI: 10.1016/j.ortho.2020.01.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/04/2020] [Accepted: 01/10/2020] [Indexed: 11/25/2022]
Abstract
OBJECTIVE This study aimed to compare cranial base linear and angular measurements between individuals with skeletal open bite and different sagittal skeletal relationships. MATERIALS AND METHODS This observational and cross-sectional study included 101 lateral radiographs of young Latin-American individuals with skeletal open bite that met the inclusion criteria and were collected from a private radiological centre. Three groups were formed. Groups 1, 2 and 3 included individuals with skeletal open bite (negative overbite and FMA>30°) and Class I (n=31), II (n=35) and III (n=35) sagittal skeletal relationship, respectively. The anterior and posterior cranial bases (SN and SBa), and cranial base angles (BaSN and ArSN) were measured. Groups were compared with one-way analysis of variance and post-hoc Scheffé tests. The influence of predictor variables on the cranial base were evaluated with linear regressions (α=0.05). RESULTS The cranial base angles were significantly smaller (approximately 3° to 5°) in the skeletal open bite Class III group (BaSN=127.97°± 5.86°, ArSN=120.19°±6.12°) when compared with the other groups. BaSN angle, Class I versus Class III (p<0.001) and Class II versus Class III (p<0.001). ArSN angle, Class I versus Class III (p=0.005) and Class II versus Class III (p=0.026). Multiple linear regressions showed that sex had a significant influence on both cranial base dimensions with men showing larger values than women. CONCLUSIONS Skeletal open bite Class III individuals show a smaller cranial base angle than Skeletal open bite Class I or II individuals.
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Affiliation(s)
- André Flores-Ysla
- Universidad Científica del Sur, School of Dentistry, Division of Orthodontics and Division of Oral and Maxillofacial Radiology, Lima, Peru
| | - Luis Ernesto Arriola-Guillén
- Universidad Científica del Sur, School of Dentistry, Division of Orthodontics and Division of Oral and Maxillofacial Radiology, Lima, Peru.
| | - Yalil Augusto Rodríguez-Càrdenas
- Universidad Nacional de Colombia, Faculty of Dentistry, Faculty of Dentistry, Division of Oral and Maxillofacial Radiology, Universidad Científica del Sur, Bogotá D.C., Colombia
| | - Gustavo Armando Ruíz-Mora
- Universidad Nacional de Colombia, Faculty of Dentistry, Faculty of Dentistry, Division of Oral and Maxillofacial Radiology, Universidad Científica del Sur, Bogotá D.C., Colombia; Universidad Nacional de Colombia, Faculty of Dentistry, Division of Orthodontics, Bogotá D.C., Colombia
| | | | - Guilherme Janson
- University of São Paulo, Bauru Dental School, Department of Orthodontics, Brazil
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Abstract
Post orthognathic surgery patient management is critical for high-quality and predictable outcomes. Surgeons and orthodontists must have the knowledge and ability to implement postsurgical management protocols and strategies to provide the best care and outcomes possible. This article presents basic concepts, philosophies, treatment protocols, risks, and potential complications associated with postsurgical patient management. Postsurgical orthodontic goals are to maximize the occlusal fit and provide predictable means to retain the occlusion. Aggressive orthodontic mechanics may be required to provide the best occlusal fit. Complications can occur, but early recognition of complications and implementation of corrective tactics should minimize adverse outcomes.
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Affiliation(s)
- Larry M Wolford
- Department of Oral and Maxillofacial Surgery, Texas A&M University College of Dentistry, Baylor University Medical Center - Private Practice, 3409 Worth Street, Suite #400, Dallas, TX 75246, USA; Department of Orthodontics, Texas A&M University College of Dentistry, Baylor University Medical Center - Private Practice, 3409 Worth Street, Suite #400, Dallas, TX 75246, USA.
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Kaku M, Yamamoto T, Yashima Y, Izumino J, Kagawa H, Ikeda K, Tanimoto K. Correction of skeletal class II severe open bite with temporomandibular joint disorder treated by miniscrew anchorage and molar extraction: a case report. J Med Case Rep 2019; 13:207. [PMID: 31279335 PMCID: PMC6612414 DOI: 10.1186/s13256-019-2132-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 05/27/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Little information is available on the treatment of open bite with temporomandibular joint disorder by intrusion of molars using miniscrews. CASE PRESENTATION This case report describes a 42-year-old Japanese woman with a skeletal class II severe anterior open bite and temporomandibular joint disorder. The pretreatment magnetic resonance imaging of both temporomandibular joints revealed osteoarthritis and anterior disc displacement without reduction in both temporomandibular joints. A stabilization splint was used before orthodontic treatment and bilateral upper and lower premolars were extracted. Miniscrews were inserted into the palatal region to intrude the maxillary molars and avoid loss of anchorage. The maxillary left first molar was also extracted to improve the molar relationship and the dental midline. Normal overjet and overbite with Angle class I molar relationship were achieved, and the upper and lower midlines coincided. Our patient's teeth continued to be stable and her temporomandibular joint was asymptomatic after a retention period of 2 years. CONCLUSIONS Intrusion of molars by miniscrews is available for skeletal class II severe open bite.
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Affiliation(s)
- Masato Kaku
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan.
| | - Taeko Yamamoto
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Yuka Yashima
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Jin Izumino
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Haruka Kagawa
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Kazutaka Ikeda
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Kotaro Tanimoto
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
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Kang YJ, Cha BK, Choi DS, Jang IS, Kim SG. Botulinum toxin-A injection into the anterior belly of the digastric muscle for the prevention of post-operative open bite in class II malocclusions: a case report and literature review. Maxillofac Plast Reconstr Surg 2019; 41:17. [PMID: 31093487 PMCID: PMC6484054 DOI: 10.1186/s40902-019-0201-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 03/21/2019] [Indexed: 11/23/2022] Open
Abstract
Background Class II malocclusion patients with hyperdivergent facial types are characterized by short mandibular body lengths and anterior open bite. Accordingly, the treatment for hyperdivergent skeletal class II malocclusion is a lengthening of the mandibular body length and a counterclockwise rotation of the mandible. To prevent post-operative relapse, botulinum toxin-A (BTX-A) injection can be a retention modality. Case presentation A class II open-bite patient received BTX-A injection to the anterior belly of her digastric muscle for the prevention of post-operative relapse. The relapse was evaluated via a clinical examination and a lateral cephalometric radiograph after the completion of post-surgical orthodontic treatment. The patient showed stable occlusion without any signs of relapse at 15 months post-operatively. Conclusion In this case presentation, a single injection into the anterior belly of the digastric muscle was sufficient for the prevention of post-operative open bite.
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Affiliation(s)
- Yei-Jin Kang
- 1Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, 28644 Republic of Korea
| | - Bong Kuen Cha
- 2Department of Orthodontics, College of Dentistry, Gangneung-Wonju National University, Gangneung, 28644 Republic of Korea
| | - Dong Soon Choi
- 2Department of Orthodontics, College of Dentistry, Gangneung-Wonju National University, Gangneung, 28644 Republic of Korea
| | - In San Jang
- 2Department of Orthodontics, College of Dentistry, Gangneung-Wonju National University, Gangneung, 28644 Republic of Korea
| | - Seong-Gon Kim
- 1Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, 28644 Republic of Korea
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Yu X, Zhang H, Sun L, Pan J, Liu Y, Chen L. Prevalence of malocclusion and occlusal traits in the early mixed dentition in Shanghai, China. PeerJ 2019; 7:e6630. [PMID: 30972246 PMCID: PMC6450371 DOI: 10.7717/peerj.6630] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 02/15/2019] [Indexed: 11/20/2022] Open
Abstract
Background Epidemiological data on malocclusion among Chinese children are scant. The aim of this study was to provide detailed information on the prevalence of malocclusion in early mixed dentition children in Shanghai, China. Methods A cross-sectional survey was conducted from September 2016 to April 2017, and 2,810 children aged 7- to 9- years were selected from 10 primary schools by cluster random sampling. Several occlusal parameters, including Angle molar relationship, overjet, overbite, open bite, anterior and posterior crossbite, midline displacement, scissors bite, and teeth crowding and spacing, were clinically registered by five calibrated orthodontic dentists. Results We found that 79.4% children presented one or more occlusal anomalies. Angle Class I, Class II and Class III molar relationship were recorded in 42.3%, 50.9% and 5.9% of the sample, respectively. The proportion of Class III increased from 5.0% at age 7 to 7.8% at age 9. In the sagittal plane, increased overjet >3 mm was observed in 40.8% subjects, while the prevalence of severe overjet (>8 mm), anterior edge-to-edge (zero overjet) and anterior crossbite were 5.2%, 8.1% and 10.5%, respectively. Vertically, deep overbite >2/3 overlap was found in 6.2% of the children and open bite in 4.3%. Boys exhibited a higher rate of overbite than girls. For the transversal occlusal anomalies, 36.1% of the children had a midline displacement, which was followed by posterior crossbite (2.6%) and scissors bite (1.0%). Teeth space discrepancies were also common anomalies and anterior crowding (>2 mm) affecting 28.4% of the children, while anterior spacing (>4 mm) affecting 9.5%. Girls showed a higher prevalence of anterior crowding and a lower frequency of teeth spacing than boys. Conclusions Our study demonstrated that malocclusion is prevalent among children in the early mixed dentition, and more health resources should be warranted to meet the challenge of prevention or early intervention of malocclusion.
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Affiliation(s)
- Xin Yu
- Department of Pediatric Dentistry, Shanghai Stomatological Hospital, Fudan University, Shanghai, China.,Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Hao Zhang
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China.,Department of Preventive Dentistry, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Liangyan Sun
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China.,Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Jie Pan
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China.,Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Yuehua Liu
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China.,Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Li Chen
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China.,Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, China.,Minhang Preventive Dental Clinic, Shanghai, China
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Mori H, Izawa T, Mori H, Watanabe K, Kanno T, Tanaka E. Skeletal open bite with amelogenesis imperfecta treated with compression osteogenesis: a case report. Head Face Med 2019; 15:3. [PMID: 30691484 PMCID: PMC6348607 DOI: 10.1186/s13005-019-0187-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 01/14/2019] [Indexed: 11/24/2022] Open
Abstract
Background We successfully treated a 37-year-old male who had skeletal open bite with severe amelogenesis imperfecta (AI) with orthodontics, compression osteogenesis, and prosthodontics. Case presentation The patient was diagnosed with severe anterior open bite caused by severe AI. Corticotomy was performed on both buccal and palatal sides of the molar regions, and anchor plates were placed onto the bilateral zygomatic buttress and the center of the hard palate. After corticotomy, posterior maxillary segments were moved 3.5 mm superiorly to correct skeletal open bite with elastic chains. After 8-month, overbite had decreased by 2.0 mm. After further 5 months of prosthodontic preparation, orthodontic appliances were removed, and provisional crowns were set on all teeth. The anterior open bite was corrected, and ideal occlusion with a Class I molar relationship was achieved. The upper first molars were intruded 3.5 mm, resulting in 3.0o counter-clockwise rotation of the mandible. The total active treatment period was 16 months. Acceptable occlusion with a good facial profile was well maintained throughout the 8-year retention period. Conclusions Our results indicate long-term stability after interdisciplinary treatment combining orthodontics, oral surgery, and prosthodontics in a patient with severe anterior open bite and AI.
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Affiliation(s)
- Hiroki Mori
- Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Hospital, Tokushima, Japan
| | - Takashi Izawa
- Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8504, Japan
| | | | - Keiichiro Watanabe
- Department of Orthodontics and Dentofacial Orthopedics, Tokushima University Hospital, Tokushima, Japan
| | - Takahiro Kanno
- Department of Oral and Maxillofacial Surgery, Shimane University Faculty of Medicine & Maxillofacial Trauma Center, Shimane University Hospital, Shimane, Japan
| | - Eiji Tanaka
- Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8504, Japan. .,Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia.
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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: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [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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Ji JJ, Li XD, Fan Q, Liu XJ, Yao S, Zhou Z, Yang S, Shen Y. Prevalence of gingival recession after orthodontic treatment of infraversion and open bite. J Orofac Orthop 2018; 80:1-8. [PMID: 30242441 PMCID: PMC6334723 DOI: 10.1007/s00056-018-0159-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 08/20/2018] [Indexed: 11/08/2022]
Abstract
Purpose Aim of the present study was to investigate the prevalence of gingival recession and related factors in teeth with low occlusal function (open bite and infraversion) after orthodontic treatment. Methods From January 2014 to December 2017, 403 patients received orthodontic treatment. Their gingival recession and related factors before and after treatment were retrospectively analyzed. Results The prevalence of gingival recession in patients with infraversion and open bite after orthodontic treatment were 80.6 and 75.0%, respectively; these values were 43.4 and 47.5% before treatment, respectively. Notably, the Miller index of gingival recession increased after orthodontic treatment (P < 0.05). The risk of gingival recession in patients with infraversion or open bite after orthodontic treatment was remarkably higher than the risk in other patients (odds ratio [OR] = 16.712 and 5.073, respectively); the gingival recession rate was related to treatment with tooth extraction (OR = 2.043), as well as gingival biotype (OR = 0.341) and gingival index (GI) before orthodontic treatment (OR = 97.404; P < 0.05). Conclusions Patients with these two types of low occlusal function are more likely to exhibit gingival recession after orthodontic treatment. Moreover, the prevalence of gingival recession after orthodontic treatment is higher among patients who have undergone tooth extraction during orthodontic treatment, and among those who exhibit thin gingival biotype and high gingival index before orthodontic treatment.
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Affiliation(s)
- Juan-Juan Ji
- Department of Orthodontics, The Second People's Hospital of Yunnan, No. 176 Qingnian Road, 650021, Kunming, Yunnan, China
| | - Xu-Dong Li
- Department of Prosthodontics, The Affiliated Stomatology Hospital of Kunming Medical Collage, 650031, Kunming, Yunnan, China
| | - Qun Fan
- Department of Orthodontics, The Second People's Hospital of Yunnan, No. 176 Qingnian Road, 650021, Kunming, Yunnan, China.
| | - Xiao-Jun Liu
- Department of Orthodontics, The Second People's Hospital of Yunnan, No. 176 Qingnian Road, 650021, Kunming, Yunnan, China.
| | - Shuang Yao
- Department of Orthodontics, The Second People's Hospital of Yunnan, No. 176 Qingnian Road, 650021, Kunming, Yunnan, China
| | - Zhi Zhou
- Department of Orthodontics, The Second People's Hospital of Yunnan, No. 176 Qingnian Road, 650021, Kunming, Yunnan, China
| | - Shuang Yang
- Department of Orthodontics, The Second People's Hospital of Yunnan, No. 176 Qingnian Road, 650021, Kunming, Yunnan, China
| | - Yong Shen
- Department of Orthodontics, The Second People's Hospital of Yunnan, No. 176 Qingnian Road, 650021, Kunming, Yunnan, China
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Choi KW, Ko HC, Todoki LS, Finkleman SA, Khosravi R, Wang HF, Funkhouser E, Baltuck C, Raj V, Allareddy V, Matunas JC, Vermette ME, Harrell WE, Coro JC, Greenlee GM, Huang GJ. The National Dental Practice-Based Research Network adult anterior open bite study: A description of the practitioners and patients. Angle Orthod 2018; 88:675-683. [PMID: 30207487 DOI: 10.2319/070118-491.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES: To describe the demographic and practice characteristics of the clinicians enrolled in a large, prospective cohort study examining recommendations and treatment for adult anterior open bite (AOB) and the relationship between these characteristics and practitioners' self-reported treatment preferences. The characteristics of the AOB patients recruited were also described. MATERIALS AND METHODS: Practitioners were recruited from the National Dental Practice-Based Research Network. Participants in the study consisted of practitioners and their adult AOB patients in active treatment. Upon enrollment, practitioners completed questionnaires enquiring about demographics, treatment preferences for adult AOB patients, and treatment recommendations for each patient. Patients completed questionnaires on demographics and factors related to treatment. RESULTS: Ninety-one practitioners and 347 patients were recruited. Demographic characteristics of recruited orthodontists were similar to those of American Association of Orthodontists members. The great majority of practitioners reported using fixed appliances and elastics frequently for adult AOB patients. Only a third of practitioners reported using aligners frequently for adult AOB patients, and 10% to 13% frequently recommended temporary anchorage devices (TADs) or orthognathic surgery. Seventy-four percent of the patients were female, and the mean age was 31.4 years. The mean pretreatment overbite was -2.4 mm, and the mean mandibular plane angle was 38.8°. Almost 40% of patients had undergone orthodontic treatment previously. CONCLUSIONS: This article presents the demographic data for 91 doctors and 347 adult AOB patients, as well as the practitioners' self-reported treatment preferences.
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Kalaskar R, Kalaskar AR. Classical oral manifestations of Dyke-Davidoff-Masson syndrome: a case report with review of the literature. J Korean Assoc Oral Maxillofac Surg 2018; 44:198-203. [PMID: 30181987 PMCID: PMC6117465 DOI: 10.5125/jkaoms.2018.44.4.198] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 08/16/2017] [Indexed: 12/19/2022] Open
Abstract
Dyke-Davidoff-Masson syndrome is a non-inherited rare condition that presents during childhood and is characterized by seizures, hemiplegia, mental retardation, cerebral hemiatrophy, calvarial thickening, and hyperpneumatization of the frontal sinuses. The present article highlights a case of a 12-year-old male child with additional clinical findings of café-au-late pigmentation and ocular lipodermoid. This is the first case report of Dyke-Davidoff-Masson syndrome to describe oral manifestations, such as unilateral delayed eruption of teeth, hypoplasia, and taurodontism, which could be unique and characteristic of this condition. Oral health care providers and physicians should be aware of these oral observations as dental referrals could warrant early dental prophylactic care and can be useful in diagnosing the possible time of injury and type of Dyke-Davidoff-Masson syndrome.
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Affiliation(s)
- Ritesh Kalaskar
- Department of Pediatric & Preventive Dentistry, Government Dental College & Hospital, Nagpur, India
| | - Ashita Ritesh Kalaskar
- Department of Oral Medicine & Radiology, Government Dental College & Hospital, Nagpur, India
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Nguyen T, Baek ES, Hwang S, Kim KH, Chung CJ. Nonsurgical and nonprosthetic camouflage treatment of skeletal Class II open bite with bilaterally missing lower first molars. Angle Orthod 2018; 89:505-517. [PMID: 30124320 DOI: 10.2319/030718-189.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
This report illustrates the successful nonsurgical and nonprosthetic camouflage treatment of a skeletal Class II open bite malocclusion combined with missing mandibular first molars bilaterally. In the mandible, the second and third molars were uprighted and protracted, substituting for the missing first molars. In the maxilla, anterior bodily retraction and full-arch intrusion were achieved following premolar and second molar extraction, which also induced autorotation of the mandible. The treatment outcome and prognosis were confirmed with three-dimensional superimposition techniques, along with long-term stability.
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Rossato PH, Fernandes TMF, Urnau FDA, de Castro AC, Conti F, de Almeida RR, Oltramari-Navarro PVP. Dentoalveolar effects produced by different appliances on early treatment of anterior open bite: A randomized clinical trial. Angle Orthod 2018; 88:684-691. [PMID: 29911909 DOI: 10.2319/101317-691.1] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVES: To compare different appliances for early anterior open bite (AOB) correction. MATERIALS AND METHODS: This was a parallel, randomized clinical trial. A prospective sample of patients with AOB was recruited consecutively. Eligibility criteria included angle class I malocclusion with AOB equal to or greater than 1 mm. Participants were allocated by simple randomization to 4 groups: bonded spurs, chin cup, fixed palatal crib, and removable palatal crib. Dentoalveolar changes among the groups were assessed by blinded observers by comparing lateral cephalograms taken before (T1) and 12 months after treatment (T2; analysis of variance followed by Tukey test). Of the measurements, 30% were reassessed for reliability (intraclass correlation coefficient and Bland-Altman agreement test; α = 5%; 95% confidence interval). RESULTS: A total of 99 patients with a mean AOB of 3.7 mm (mean age 8.4 ± 0.8 years, both genders) were recruited. Dropouts occurred in all the groups, yielding a final sample size of 81 analyzed individuals. Intergroup comparisons of differences (T2-T1) showed significant differences for the incisor positioning variables (1.1, 1-PP, 6-PP, IMPA, 1.NB and 1-GoMe). However, there was no significant difference in AOB reduction among the groups, with an average correction of 3.1 mm. CONCLUSIONS: All of the tested devices promoted dental changes, especially in the anterior region, and contributed to AOB reduction during the study period. However, fixed palatal crib demonstrated greater impact on the positioning of the incisors.
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Mucedero M, Fusaroli D, Franchi L, Pavoni C, Cozza P, Lione R. Long-term evaluation of rapid maxillary expansion and bite-block therapy in open bite growing subjects: A controlled clinical study. Angle Orthod 2018; 88:523-529. [PMID: 29683334 DOI: 10.2319/102717-728.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVE To evaluate the long-term effects of rapid maxillary expansion (RME) and posterior bite block (BB) in prepubertal subjects with dentoskeletal open bite. MATERIALS AND METHODS The treatment group (TG) comprised 16 subjects (14 girls, 2 boys) with dentoskeletal open bite with a mean age of 8.1 ± 1.1 years treated with RME and BB. Three consecutive lateral cephalograms were available before treatment (T1), at the end of the active treatment with the RME and BB (T2), and at a follow-up observation at least 4 years after the completion of treatment (T3). The TG was compared with a control group (CG) of 16 subjects (14 girls, 2 boys) matched for sex, age, and vertical skeletal pattern. An independent sample t-test was used to compare the T1 to T3, T1 to T2, and T2 to T3 cephalometric changes between the TG and the CG. RESULTS In the long term, the TG showed a significantly greater increase in overbite (+1.8 mm), reduced extrusion of maxillary and mandibular molars (-3.3 mm), and, consequently, a significant decrease in facial divergence (-2.8°) when compared with untreated subjects. CONCLUSIONS The RME and BB protocol led to successful and stable recovery of positive overbite in 100% of the patients considered. Correction of open bite was associated with reduced extrusion of maxillary and mandibular molars with a significant improvement in vertical skeletal relationships when compared with the CG.
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Gracco A, Finotti M, Bruno G, de Stefani A. Corticotomy-assisted orthodontic camouflage in a class III adult patient with a severe transverse discrepancy. Int Orthod 2018; 16:268-280. [PMID: 29628425 DOI: 10.1016/j.ortho.2018.03.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
A 25-year-old man presented with a maxillary transverse discrepancy, posterior cross bite, anterior open bite, molar and canine class III. Treatment included a corticotomy in the upper lateral and posterior teeth, a palatal expansor and a sectional archwire to assist the expansion. The following treatment phase included bonding with Incognito System lingual appliance, interproximal reduction to solve the crowding and bite blocks to control the verticality. Two months after the bonding intermaxillary class III elastics were used to solve the sagittal discrepancy and eight months after the bonding vertical elastics were used in order to solve the anterior open bite until the end of the treatment. A Boston splint was applied for the upper arch, an essix splint was applied for the lower arch. The patient compliance was an essential aspect in the success of the orthodontic treatment.
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Affiliation(s)
- Antonio Gracco
- Neuroscience Department, University of Padova, Via Giustiniani, 2, 35100 Padova, Italy
| | | | - Giovanni Bruno
- Neuroscience Department, University of Padova, Via Giustiniani, 2, 35100 Padova, Italy
| | - Alberto de Stefani
- Neuroscience Department, University of Padova, Via Giustiniani, 2, 35100 Padova, Italy.
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Abstract
Objective A minor alteration in the posterior occlusal height elicits a large transformation in the anterior vertical dimension. Thus, the present study was performed to determine whether a posterior cusp-to-cusp relation that increases the posterior vertical dimension contributes to an anterior open bite. Methods Study casts were examined from orthodontic patients aged 10 to 27 years, 21 with an open bite and 28 with a scissor deep bite. A logistic regression model was used to analyze the contribution of various factors to these two anterior occlusal patterns. The dental arch width and number of worn cusps were compared between the two groups. Results Patients with an open bite had a significantly higher incidence of a posterior buccal–lingual cusp-to-cusp relation, wider mandibular arch in the molar region, and larger numbers of worn maxillary buccal cusps and mandibular lingual cusps than patients with a scissor deep bite. Conclusions A posterior buccal–lingual cusp-to-cusp relation is associated with a larger anterior vertical dimension, such as that in patients with an open bite.
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Affiliation(s)
- Kun Qi
- 1 Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research & Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, Department of Orthodontics, Stomatological Hospital, Xi'an Jiaotong University, Xi'an, P.R. China.,2 State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Disease & Shaanxi International Joint Research Center for Oral Diseases, Department of Oral Anatomy and Physiology and TMD, School of Stomatology, Fourth Military Medical University, Xi'an, P.R. China
| | - Yifei Xu
- 2 State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Disease & Shaanxi International Joint Research Center for Oral Diseases, Department of Oral Anatomy and Physiology and TMD, School of Stomatology, Fourth Military Medical University, Xi'an, P.R. China
| | - Yuxia Hou
- 1 Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research & Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, Department of Orthodontics, Stomatological Hospital, Xi'an Jiaotong University, Xi'an, P.R. China
| | - Mei-Qing Wang
- 2 State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Disease & Shaanxi International Joint Research Center for Oral Diseases, Department of Oral Anatomy and Physiology and TMD, School of Stomatology, Fourth Military Medical University, Xi'an, P.R. China
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