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1.
Am J Orthod Dentofacial Orthop ; 159(2): 224-233, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33546827

RESUMO

This case report describes the treatment of a 16-year-old female patient with a skeletal open bite and temporomandibular dysfunction. Clear aligners and miniscrews were used to control the occlusal plane and improve the skeletal problem. At the end of treatment, the mandible had rotated counterclockwise, allowing bite closure, upgrading dental and facial esthetics, and improving temporomandibular dysfunction.


Assuntos
Mordida Aberta , Aparelhos Ortodônticos Removíveis , Adolescente , Cefalometria , Feminino , Humanos , Mandíbula , Mordida Aberta/diagnóstico por imagem , Mordida Aberta/terapia
4.
Ned Tijdschr Tandheelkd ; 128(1): 13-20, 2021 Jan.
Artigo em Holandês | MEDLINE | ID: mdl-33449052

RESUMO

Oral care for children with autism spectrum disorder requires a distinctive approach often involving a lot of effort, energy, and time. It puts the perseverance of parents and carers severely to the test. This is very recognisable to the orthodontics department of the Erasmus Medical Center. Negative experiences with conventional orthodontic appliances in this group of patients were the reason to start using the clear aligner system in January 2018. This article deals extensively with the treatment process, the advantages of the clear aligner system, and the need for an adapted, autism-friendly management style in orthodontic care for children with autism.


Assuntos
Transtorno do Espectro Autista , Aparelhos Ortodônticos Removíveis , Cuidadores , Criança , Humanos , Pais
5.
Medicine (Baltimore) ; 99(50): e23165, 2020 Dec 11.
Artigo em Inglês | MEDLINE | ID: mdl-33327234

RESUMO

BACKGROUND: Although several researchers have analyzed the dental identity of patients experience with corrective methods using fixed and removable appliances, the consequences stay debatable. This meta-analysis intended to verify whether the periodontal status of removable appliances is similar to that of the conventional fixed appliances. METHODS: Relevant literature was retrieved from the database of Cochrane library, PubMed, EMBASE, and CNKI until December 2019, without time or language restrictions. Comparative clinical studies assessing periodontal conditions between removable appliances and fixed appliances were included for analysis. The data was analyzed using the Stata 12.0 software. RESULTS: A total of 13 articles involving 598 subjects were selected for this meta-analysis. We found that the plaque index (PLI) identity of the removable appliances group was significantly lower compared to the fixed appliances group at 3 months (OR = -0.57, 95% CI: -0.98 to -0.16, P = .006) and 6 months (OR = -1.10, 95% CI: -1.60 to -0.61, P = .000). The gingival index (GI) of the removable appliances group was lower at 6 months (OR = -1.14, 95% CI: -1.95 to -0.34, P = .005), but the difference was not statistically significant at 3 months (OR = -0.20, 95% CI: -0.50 to 0.10, P = .185) when compared with that of the fixed appliances group. The sulcus probing depth (SPD) of the removable appliances group was lower compared to the fixed appliances group at 3 months (OR = -0.26, 95% CI: -0.52 to -0.01, P = .047) and 6 months (OR = -0.42, 95% CI: -0.83 to -0.01, P = .045). The shape of the funnel plot was symmetrical, indicating no obvious publication bias in the Begg test (P = .174); the Egger test also indicated no obvious publication bias (P = .1). CONCLUSION: Our meta-analysis demonstrated that malocclusion patients treated with the removable appliances demonstrated a better periodontal status as compared with those treated with fixed orthodontic appliances. However, the analyses of more numbers of clinical trials are warranted to confirm this conclusion.


Assuntos
Má Oclusão/terapia , Aparelhos Ortodônticos Fixos/efeitos adversos , Aparelhos Ortodônticos Removíveis/efeitos adversos , Doenças Periodontais/etiologia , Adolescente , Adulto , Criança , Feminino , Humanos , Masculino , Má Oclusão/classificação , Má Oclusão/diagnóstico , Pessoa de Meia-Idade , Desenho de Aparelho Ortodôntico/tendências , Aparelhos Ortodônticos/provisão & distribução , Avaliação de Resultados em Cuidados de Saúde , Doenças Periodontais/epidemiologia , Índice Periodontal , Ensaios Clínicos Controlados Aleatórios como Assunto
6.
Angle Orthod ; 90(3): 419-424, 2020 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-33378436

RESUMO

OBJECTIVES: To evaluate the content, reliability, and quality of videos about orthodontic clear aligners on YouTube. MATERIALS AND METHODS: Researchers used the Google Trends website to determine that the most frequently used search term for orthodontic clear aligners on the Internet was: "Invisalign." A search was then conducted on YouTube using the key word "Invisalign." From the first 140 results, 100 videos were selected for analysis. A 13-point content score was used to classify poor-content and rich-content videos, and the global quality scale (GQS) was used to examine quality of the videos. To evaluate reliability of the information, a five-question scale was used. The Mann-Whitney U-test, χ2 test, and Pearson correlation coefficients were used for statistical evaluations. RESULTS: Of the YouTube videos, 33 were classified as rich content and 67 as poor content. Most videos (73%) were uploaded by laypeople, and most uploaders (71%) were women. The most commonly discussed content was instructions (65%), followed by procedure (57%) and pain (52%). Regarding the GQS, most of the videos were evaluated as moderate quality (51%). Compared with the poor-content video group, the rich-content video group had a significantly higher GQS score (P = .004). There was no significant difference between the poor-content and rich-content groups regarding information reliability (P > .05). CONCLUSIONS: Video content on YouTube relating to aligner orthodontics was generally insufficient. The quality of videos was moderate, but the reliability of information was generally poor. Specialists should refer patients to reliable sources of information.


Assuntos
Aparelhos Ortodônticos Removíveis , Mídias Sociais , Feminino , Humanos , Reprodutibilidade dos Testes , Gravação em Vídeo
7.
Angle Orthod ; 90(4): 485-490, 2020 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-33378505

RESUMO

OBJECTIVE: To assess the efficacy and efficiency of treatment in adolescents presenting with mild malocclusions, comparing outcomes using clear aligners to fixed appliances. MATERIALS AND METHODS: Patients identified retrospectively and consecutively from one private practice had been treated with either clear aligners (Invisalign, Align Technology, Santa Clara, Calif) or fixed appliances (0.022 Damon, Ormco, Orange, Calif; n = 26/group). Assessments of occlusion were made using the American Board of Orthodontics Discrepancy Index (DI) for initial records and Cast-Radiograph Evaluation (CRE) for final records. Number of appointments, number of emergency visits, and overall treatment time were determined from chart reviews. Data were analyzed using Pearson's correlation, Wilcoxon rank tests, unpaired t-tests, and Chi-square tests, with significance set to P ≤ .05. RESULTS: Pretreatment, the aligner and fixed groups showed no significant difference in overall severity (DI: 11.9 ± 5.3 vs 11.6 ± 4.8) or in any individual DI category. Posttreatment scores showed finishes for the aligner group had fewer discrepancies from ideal relative to the fixed appliance group (CRE: 30.1 ± 8.3 vs 37.0 ± 9.3; P < .01). Patients treated with aligners had fewer appointments (13.7 ± 4.4 vs 19.3 ± 3.6; P < .0001), fewer emergency visits (0.8 ± 1.0 vs 3.6 ± 2.5; P < .0001), and shorter overall treatment time (16.9 ± 5.7 vs 23.4 ± 4.4 months; P < .0001). CONCLUSIONS: Outcomes for treatment of mild malocclusions in adolescents showed equivalent effectiveness of clear aligners compared to fixed appliances, with significantly improved results for clear aligner treatment in terms of tooth alignment, occlusal relations, and overjet. Assessment of the number of appointments, number of emergency visits, and overall treatment time showed better outcomes for treatment with clear aligners.


Assuntos
Má Oclusão , Aparelhos Ortodônticos Removíveis , Adolescente , Humanos , Má Oclusão/terapia , Desenho de Aparelho Ortodôntico , Aparelhos Ortodônticos Fixos , Avaliação de Resultados em Cuidados de Saúde , Estudos Retrospectivos , Resultado do Tratamento
8.
Evid Based Dent ; 21(4): 144-145, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-33339979

RESUMO

Design Systematic review for randomised and non-randomised studies.Data sources Eight electronic databases: PubMed, Cochrane, Scopus, Web of Science, Lilacs, Google Scholar, Clinical Trials and OpenGrey were searched without language or date restrictions during the search, in addition to hand-searching.Study selection Randomised and non-randomised controlled trials (RCTs and non-RCTs) and cross-sectional studies that compare pain levels between fixed appliances and clear aligners during orthodontic treatment in adults patients.Data extraction and synthesis The reviewers followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The study selection was done by two reviewers. The reviewers assessed the risk of bias using three risk of bias tools (ROB.2 tool for RCTs, ROBINS-I tool for non-RCTs and the Newcastle-Ottawa scale for cross-sectional studies).Results Seven studies were included in this review. Five studies were non-RCTs, one was an RCT and one study was a cross-sectional design. The risk of bias was moderate to high in the non-RCTs, low in the RCT and low for the cross-sectional study. All studies used the same type of aligners (Invisalign aligner) and they differed in the fixed appliance type and archwire sequences. However, meta-analysis was not possible. In the first 24 hours of treatment, four studies revealed that the pain is higher in the fixed appliance group. During days three and four, two studies reported a higher level of pain in a fixed appliance group. On days five to seven, only one study reported a higher level of pain in a fixed appliance group. On day 14, two studies evaluated pain levels and reported that there is no difference between the two groups.Conclusions With low certainty, patients treated with clear aligners seems to have less pain perception than patients treated with conventional fixed appliances during the first days of treatment. There were no noticeable differences up to three months between the two groups. Furthermore, the malocclusion was not described in detail in the individual studies, which may play a role in pain level differences.


Assuntos
Má Oclusão , Aparelhos Ortodônticos Removíveis , Adulto , Estudos Transversais , Humanos , Aparelhos Ortodônticos Fixos , Dor
9.
Am J Orthod Dentofacial Orthop ; 158(6): 878-888, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33129633

RESUMO

The demand for fast and invisible treatment options for adults has grown. Treatment protocols involving clear aligners in association with alveolar corticotomy have been developed in response to this demand. Alveolar corticotomy surgery can accelerate orthodontic tooth movement, but good clinical follow-up is crucial and can become cumbersome as the frequency of aligner changes accelerates. Clinical monitoring with patient-managed software can be of assistance in such cases. We present the ortho-surgical treatment of a healthy 21-year-old woman with Class III malocclusion who was treated with corticotomy-accelerated presurgical decompensation and clear aligners, followed by mandibular sagittal split osteotomy. Alveolar corticotomy surgery was performed and the aligners were changed every 4 days. Clinical follow-up of aligner-mediated tooth movement was managed with a patient-managed smartphone application, allowing early interception and correction of minute orthodontic movement errors. Such errors would have been difficult to detect considering the rapidity of aligner change when accelerated by alveolar corticotomy. Clinical follow-up with a patient-managed smartphone application could thus allow for better and easier management of corticotomy-accelerated clear aligner orthodontic treatment.


Assuntos
Má Oclusão de Angle Classe III , Aparelhos Ortodônticos Removíveis , Adulto , Feminino , Seguimentos , Humanos , Osteotomia Mandibular , Técnicas de Movimentação Dentária , Adulto Jovem
10.
Am J Orthod Dentofacial Orthop ; 158(6): 889-897, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33250102

RESUMO

INTRODUCTION: This study aimed to investigate the effect of print orientation and ultraviolet (UV) light curing duration on the dimensional accuracy of a clear aligner design fabricated directly using 3-dimensional (3D) printing. METHODS: A master clear aligner design file was 3D printed on a stereolithography printer using 3 different build angles with respect to the build platform: parallel (Horizontal), perpendicular (Vertical), and 45° (45-Degree) (n = 10/group). The 45° orientation then was used to print aligners for 3 postprint processing treatment groups: 0 minutes of UV light and heat exposure (No Cure); 20 minutes of UV light exposure at 80oC (20 Minute), and 40 minutes of UV light exposure at 80oC (40 Minute) (n = 10/group). Each part was digitally scanned and superimposed with the input file for 3D deviation analysis. A generalized linear mixed model and post-hoc Tukey contrasts were applied for statistical analysis. RESULTS: Difficulties were encountered in optical scanning of 3D-printed aligners, resulting in the exclusion of some samples and the No Cure group from the analysis. The average positive and negative deviations were not statistically significantly different among the print orientations, and postprint processing conditions were analyzed and fell within limits of clinical acceptability (0.250 mm). Color deviation maps illustrated localized areas of dimensional deviation that may affect the clinical utility of the printed aligner design. CONCLUSIONS: The print orientation and postprint curing duration have little effect on the overall accuracy of the 3D-printed aligner design under the conditions investigated. However, the potential effects of location-specific deviations on the clinical utility of 3D-printed aligners should be considered in future studies.


Assuntos
Aparelhos Ortodônticos Removíveis , Impressão Tridimensional , Estereolitografia
11.
Shanghai Kou Qiang Yi Xue ; 29(4): 386-389, 2020 Aug.
Artigo em Chinês | MEDLINE | ID: mdl-33089287

RESUMO

PURPOSE: The purpose of this study was to investigate the periodontal status in adult periodontal disease patients with malocclusion treated with digital clear aligners. METHODS: Thirty-three patients with periodontal disease who needed orthodontic treatment were selected. The patients were randomly divided into 2 groups, digital clear aligners group (experimental group, 16 patients) and fixed appliances group (control group, 17 patients). Bleeding index (BI), probing depth(PD), plaque index(PLI) and gingival index(GI) were recorded at baseline and 1, 3, 6 and 9 months during orthodontic treatment. SPSS 17.0 software package was used to analyze and compare the data of periodontal status between two groups. RESULTS: 1, 3, 6, and 9 months after orthodontic treatment, clinical parameters of the control group were significantly higher than baseline(P<0.05). The same measurements of the experimental group showed no significant differences at 1, 3, 6, and 9 months of treatment (P>0.05). After 1, 3, 6, and 9 months of treatment, the clinical parameters of BI, PLI and GI in the experimental group were significantly lower than the control group(P<0.05); PD in the experimental group was smaller than the control group, but there was no significant difference(P>0.05). CONCLUSIONS: Compared with conventional fixed appliance, clear aligner of digitalization can more effectively maintain periodontal heath in adult periodontal disease patients with malocclusion.


Assuntos
Má Oclusão , Aparelhos Ortodônticos Removíveis , Doenças Periodontais , Adulto , Índice de Placa Dentária , Humanos , Má Oclusão/terapia , Doenças Periodontais/terapia , Índice Periodontal
12.
Shanghai Kou Qiang Yi Xue ; 29(4): 410-413, 2020 Aug.
Artigo em Chinês | MEDLINE | ID: mdl-33089292

RESUMO

PURPOSE: To investigate the effect of invisalign on anterior and posterior upper airway and maxillary bone changes in the treatment of high-angle skeletal Class II malocclusion. METHODS: Thirty-seven patients with malocclusion undergoing invisible orthodontic treatment in Hospital of Stomatology of Xi'an Jiaotong University from June 2016 to June 2018 were enrolled. Before and 18 months after correction, the correction effect was evaluated. Cone-beam CT (CBCT) was performed to measure the upper airway volume and tongue position. Cephalometric examination was performed to determine the anteroposterious diameter of the upper airway and the position of hyoid bone. The pre-therapy and post-treatment facial profile images of patients and stars were graded by 0-10 numerical rating scale. SPSS 20.0 software package was used to analyze the data. RESULTS: After correction, oropharyngeal volume, glossopharyngeal volume and minimum cross-sectional area of upper airway significantly increased(P<0.05). Sagittal diameter of the upper airway at mandibular plane significantly increased after correction (P<0.05). After correction, ANB angle, GoGn-SN angle, OPP-SN angle, Y-axis angle, UI-SN angle, UI-PP angle, UI-AP angle, and UI-AP distance significantly decreased, SNB angle and UI- LI angle significantly increased(P<0.05). The aesthetics scores of facial profile images significantly increased after correlation(P<0.05), which was significantly lower than that of the stars(P<0.05). CONCLUSIONS: Invisalign can effectively correct open upper airway and malocclusion, achieving better treatment results and satisfactory facial aesthetics effect.


Assuntos
Má Oclusão , Aparelhos Ortodônticos Removíveis , Cefalometria , Estética Dentária , Humanos , Maxila/diagnóstico por imagem
13.
J Oral Rehabil ; 47(12): 1521-1529, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32898936

RESUMO

BACKGROUND: Clinical findings suggest that orthodontic treatment with clear aligners (clear aligner therapy/CAT) may cause masticatory muscle soreness in some patients. OBJECTIVE: This multi-site prospective study investigated tooth pain and masticatory muscle soreness and tenderness in patients undergoing CAT and explored whether psychological traits affected these outcomes. METHODS: Twenty-seven adults (22F, 5M; mean age ± SD=35.3 ± 17.6 years) about to start CAT were recruited at three clinics. During CAT, they reported on 100-mm visual analogue scales their tooth pain, masticatory muscle soreness and stress three times per day over 4 weeks (week 1 = baseline; week 2 = dummy aligner; week 3 = first active aligner; week 4 = second active aligner). Pressure pain thresholds (PPTs) were measured at the masseter and temporalis at baseline and after week 4. Mixed models were used to evaluate the outcome measures over time. RESULTS: Clear aligner therapy caused mild tooth pain, which was greater with the passive than the first and second active aligners (both P < .001). Mild and clinically not relevant masticatory muscle soreness was produced by all aligners (all P < .05), with the first active aligner producing less soreness than the dummy aligner (P < .001). PPTs did not change significantly after 4 weeks. Both tooth pain and masticatory muscle soreness were affected by stress and trait anxiety, whilst muscle soreness was affected also by oral behaviours. CONCLUSIONS: In the short term, CAT produces tooth pain and masticatory muscle soreness of limited significance. Frequent oral behaviours are related to increased masticatory muscle soreness during CAT. The medium- and long-term effects of CAT should be further explored.


Assuntos
Mialgia , Aparelhos Ortodônticos Removíveis , Adulto , Humanos , Músculo Masseter , Músculos da Mastigação , Mialgia/etiologia , Limiar da Dor , Estudos Prospectivos
14.
Dental Press J Orthod ; 25(4): 33-43, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32965385

RESUMO

INTRODUCTION: Anterior crossbite (AC) is defined as a reverse sagittal relationship between maxillary and mandibular incisors. According to an evidence-based orthodontic triage, the treatment need of AC is indicated if any occlusal interference is forcing the mandible towards a Class III growth pattern. Removable and fixed appliances have been suggested to correct AC. OBJECTIVE: The present report aims at presenting the benefits of an alternative therapy for the early treatment of anterior crossbite using clear aligners. METHODS: Two cases of anterior crossbite corrected using clear aligners in 8-years-old children are presented. RESULTS: In both cases, AC was successfully corrected within 5 months. At the end of the treatment, overjet and overbite were corrected. No major discomfort or speech impairment was noticed by the parents. CONCLUSIONS: Due to the perceived shortcomings of alternative approaches, the use of clear aligners for correcting AC in mixed dentition should be considered as a comfortable and well tolerated appliance for young patients.


Assuntos
Má Oclusão de Angle Classe II , Má Oclusão/terapia , Aparelhos Ortodônticos Removíveis , Sobremordida , Criança , Dentição Mista , Humanos
15.
Dental Press J Orthod ; 25(4): 85-100, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32965392

RESUMO

INTRODUCTION: Due to the search for more aesthetic and comfortable alternatives to perform orthodontic treatments and to the great technological development, orthodontic aligners have assumed great importance. More and more complex treatments have been carried out with these appliances without, however, having all aspects involved in their use being studied in depth. Its biomechanical planning requires different approaches than those used in fixed orthodontics, as the force systems involved in movements, responses and side effects are distinct, and the professional must be prepared when opting for the technique. OBJECTIVE: The objective of this article is to perform an evaluation of the force systems created on the space closure with aligners, its characteristics, and problems, as well as make some suggestions to overcome the difficulties inherent to its use. CONCLUSION: Space closure with aligners is possible, but depends on the correct selection of the patient, in addition to requiring the proper planning of the applied forces. The use of auxiliary resources and overcorrections to address the deficiencies of the aligner systems should always be considered. Digital planning should be used as a map of the force systems that will be applied, and not just as a marketing tool, keeping in mind that determining the objectives and the way to achieve them is the responsibility of the orthodontist, and that treatment plans must be individualized for each situation, following appropriate biomechanical precepts.


Assuntos
Desenho de Aparelho Ortodôntico , Aparelhos Ortodônticos Removíveis , Estética Dentária , Humanos , Ortodontistas , Técnicas de Movimentação Dentária
16.
J Clin Orthod ; 54(7): 429-430, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32966248
19.
Acta Odontol Latinoam ; 33(2): 69-81, 2020 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-32920608

RESUMO

The aim of this study was to evaluate changes in periodontal status and maxillary buccal bone by considering clinical and tomographic parameters during the first year of orthodontic expansion with Invisalign® aligners. Upper first (1PM) and upper second (2PM) premolars of 19 patients with orthodontic expansion requirement treated with Invisalign® aligners were evaluated. Plaque index (PI), gingival index (GI), probing pocket depth (PPD), clinical attachment level (CAL) and cone beam tomographic (CBCT) records were collected at 76 sites before starting treatment (T0) and at 12 months (T1). Bone height was measured from cementoenamel junction (CEJ) to the crest cortical bone (CC). Bone thickness was measured at two levels: 4 mm (CEJ+4) and 6 mm (CEJ+6) apical to the CEJ. A descriptive analysis was made of the variations of bone thickness and height in a series of cases. The average expansion was 1.93 mm for 1PM and 167 mm for 2PM. Arithmetic mean of distance CEJ-CC in 1PM was 3.05 mm at T0, and remained at 3.05 mm at T1. Arithmetic mean of distance CEJ-CC in 2PM was 2.06 mm at T0 and 2.31 at T1. Post-expansion, most of the analyzed sites (86%) exhibited a bone thickness of ≥0.5 mm. The greatest variations between T0 and T1 were observed at the level of 1PM CEJ+ 4 and 2PM CEJ+ 6. The minimal changes in the clinical records (GI, PI, PPD and CAL) between T0 and T1 were compatible with the maintenance of gingivalperiodontal health. Invisalign® for expansion movements did not produce substantial changes in the evaluated periodontal clinical parameters or in the bone measurements. Removable appliances reduce plaque retentive factors and favor adequate oral hygiene.


Assuntos
Placa Dentária/etiologia , Má Oclusão/terapia , Maxila/diagnóstico por imagem , Saúde Bucal , Aparelhos Ortodônticos Removíveis/efeitos adversos , Técnicas de Movimentação Dentária/efeitos adversos , Tomografia Computadorizada de Feixe Cônico , Placa Dentária/microbiologia , Índice de Placa Dentária , Nível de Saúde , Humanos , Técnicas de Movimentação Dentária/instrumentação
20.
Prog Orthod ; 21(1): 23, 2020 Aug 24.
Artigo em Inglês | MEDLINE | ID: mdl-32830306

RESUMO

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.


Assuntos
Má Oclusão de Angle Classe II , Mordida Aberta , Aparelhos Ortodônticos Removíveis , Adulto , Cefalometria , Humanos , Estudos Retrospectivos , Técnicas de Movimentação Dentária , Adulto Jovem
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