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Marañón-Vásquez GA, de Andrade ACDV, Maia LC, Dos Santos RL, Tanaka OM, Paranhos LR, Oliveira DD, Pithon MM. Effect of treatment of transverse maxillary deficiency using rapid palatal expansion on oral health-related quality of life in children: complementary results for a controlled clinical trial. Clin Oral Investig 2024; 28:525. [PMID: 39269644 DOI: 10.1007/s00784-024-05902-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 08/25/2024] [Indexed: 09/15/2024]
Abstract
OBJECTIVE To evaluate the effect of rapid palatal expansion (RPE) using Haas-type expanders on children's oral health-related quality of life (OHRQOL) and compare said effect with that previously reported for the use of Hyrax-type expanders. MATERIALS AND METHODS Forty participants aged 8-10 years with transverse maxillary deficiency were treated using Haas appliances. OHRQOL was measured using the CPQ8 - 10 before RPE, during RPE (T1), at the end of RPE (T2), and 1 month after appliance removal (T3). Generalized mixed models were fitted to assess the effect of the Haas-type expander compared to previously collected data (a nontreated and a Hyrax-type expander-treated group). RESULTS RPE with Haas-type appliances had a negative impact on overall OHRQOL at T1 and T2 (P = 0.001), and a positive impact at T3 (P = 0.001). The Haas-type expander had a significantly greater negative impact on OHRQOL than the Hyrax-type appliance during RPE. At T1, overall scores using the Haas-type expander were 1.08 times the scores using the Hyrax-type expander (i.e., 8% increase; 95% CI, 1.01-1.17; P = 0.033). Patients using the Haas appliance had 1.24 times the scores of those using Hyrax-type devices for the oral symptoms domain at T1 (i.e., 24% increase; 95% CI, 1.06-1.46; P = 0.009). CONCLUSIONS Correction of the transverse maxillary deficiency by RPE using the Haas appliance in children 8-10 years improves OHRQOL. The Haas- and Hyrax-type devices temporarily worsen OHRQOL during treatment, however, the negative impact is less with the Hyrax-type expander than with the Haas-type expander, because it causes fewer negative oral symptoms. CLINICAL RELEVANCE From a patient-centered perspective, the use of the Hyrax over the Haas appliance may be suggested as it causes less negative oral symptoms during use.
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Affiliation(s)
- Guido Artemio Marañón-Vásquez
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rodolpho Paulo Rocco, 325 - Cidade Universitária da Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-617, Brazil.
| | - Ana Carolina Dias Viana de Andrade
- Department of Health II, School of Medicine, Southwest Bahia State University, Av. José Moreira Sobrinho, s/n, Jequiezinho, Jequié, BA, 45206190, Brazil
| | - Lucianne Cople Maia
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rodolpho Paulo Rocco, 325 - Cidade Universitária da Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-617, Brazil
| | - Rogério Lacerda Dos Santos
- School of Dentistry, Federal University of Juiz de Fora, Rua. São Paulo, 745 - Centro, Gov., Valadares, MG, 35010-180, Brazil
| | - Orlando Motohiro Tanaka
- School of Life Sciences, Pontifical Catholic University of Paraná, Rua. Imac. Conceição, 1155 - Bloco 3 - 1º andar - Prado Velho, Bloco 9, Curitiba, PR, 80215- 182, Brazil
| | - Luiz Renato Paranhos
- Department of Preventive and Social Dentistry, Federal University of Uberlândia, Av. Pará, 1720 - Anexo B - Bairro Umuarama, Uberlândia, MG, 38405-320, Brazil
| | - Dauro Douglas Oliveira
- School of Life Sciences, Pontifical Catholic University of Minas Gerais, Av. D. José Gaspar, 500 - Prédio 46 - Sala 101 - Coração Eucarístico, Belo Horizonte, MG, 30535901, Brazil
| | - Matheus Melo Pithon
- Department of Health I, School of Dentistry, Southwest Bahia State University, Av. José Moreira Sobrinho, s/n, Jequiezinho, Jequié, BA, 45206190, Brazil.
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Romeo DJ, Oral KT, Ng JJ, Wu M, Massenburg BB, Salinero LK, Friedman L, Bartlett SP, Swanson JW, Taylor JA. Mandibular condyle volumes are associated with facial asymmetry in patients with cleft lip and palate: A retrospective cohort study. J Craniomaxillofac Surg 2024; 52:472-476. [PMID: 38378367 DOI: 10.1016/j.jcms.2024.01.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/24/2023] [Accepted: 01/16/2024] [Indexed: 02/22/2024] Open
Abstract
This study compares condylar volumetric asymmetry and facial asymmetry in patients with cleft lip and/or palate (CLP) and controls. The mandibular condyle is important to facial growth, but its role in facial asymmetry for those with CLP has not been described. Condylar volumes and mandibular asymmetry were retrospectively calculated using Mimics Version 23.0 (Materialise, Leuven, Belgium) from patients with CLP undergoing computed tomography (CT) imaging and a cohort of controls. A total of 101 participants, 60 with CLP and 41 controls, had mean condylar volumetric asymmetry of 16.4 ± 17.4 % (CLP) and 6.0 ± 4.0 % (controls) (p = 0.0002). Patients with CLP who had clinically significant chin deviation (>4 mm) had more asymmetric condyles than those without significant chin deviation (p = 0.003). The chin deviated toward the smaller condyle in patients with facial asymmetry more often than in patients without facial asymmetry (81 % vs. 62 %, p = 0.033). While controls had some degree of condylar asymmetry, it tended to be milder and not associated with facial asymmetry. There is a greater degree of condylar volumetric asymmetry in patients with CLP compared to individuals in the general population. Clinically significant facial asymmetry in CLP is associated with a higher degree of condylar asymmetry, with the facial midline deviating toward the smaller condyle.
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Affiliation(s)
- Dominic J Romeo
- Division of Plastic, Reconstructive and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - Kaan T Oral
- Division of Plastic, Reconstructive and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - Jinggang J Ng
- Division of Plastic, Reconstructive and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - Meagan Wu
- Division of Plastic, Reconstructive and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - Benjamin B Massenburg
- 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
| | - Leigh Friedman
- Division of Plastic, Reconstructive and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - Scott P Bartlett
- Division of Plastic, Reconstructive and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - Jordan W Swanson
- Division of Plastic, Reconstructive and Oral Surgery, Children's Hospital of Philadelphia, USA
| | - Jesse A Taylor
- Division of Plastic, Reconstructive and Oral Surgery, Children's Hospital of Philadelphia, USA.
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Karabiber G, Yılmaz HN. Three-dimensional evaluation of the temporomandibular joints after unilateral surgically assisted rapid maxillary expansion in adults: A preliminary retrospective study. J Oral Rehabil 2023; 50:1432-1438. [PMID: 37614097 DOI: 10.1111/joor.13576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 04/21/2023] [Accepted: 08/09/2023] [Indexed: 08/25/2023]
Abstract
BACKGROUND Unilateral surgically assisted rapid maxillary expansion (U-SARME) is a successful method for correction of true unilateral posterior crossbite (TUPC). OBJECTIVES This retrospective preliminary study aimed to evaluate the position and morphology of condyles in TUPC cases and the effects of U-SARME on condyle with the help of cone beam computed tomography (CBCT). METHODS Fifteen patients (mean age: 18.69 ± 1.59 years) who were diagnosed as TUPC and undergone U-SARME were selected. Preoperative (T0) and after 6-month retention (T1) DICOM data of CBCT images were evaluated with MIMICs version 19.0 software. Condylar morphology (medio-lateral and antero-posterior dimensions) and position (anterior, posterior, medial and lateral joint spaces, frontal/axial axis angles, the ratio of posterior to anterior joint space and the percentage of posterior to anterior joint space) were evaluated. Student's t-test was used for intergroup (crossbite, normal) comparisons. Paired-samples t-test was used for intra-group comparisons (p = .05). RESULTS There were no positional or dimensional asymmetry of the condyles between crossbite and normal sides initially and after expansion. Regarding T0-T1 changes, while significant increase was determined in medial (0.3 ± 0.29 mm; p = .001) and superior (0.39 ± 0.7 mm; p = .045) joint spaces on crossbite side, posterior (0.79 ± 0.99 mm; p = .008), superior (0.5 ± 0.79 mm; p = .029) and lateral joint spaces (0.31 ± 0.54 mm; p = .042) presented significant increases on normal side. However, no significant changes were found between crossbite and normal sides at T0 and T1. CONCLUSIONS Condyles were symmetrical in true unilateral posterior crossbite cases and the symmetry were not disrupted following U-SARME.
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Affiliation(s)
- Gülden Karabiber
- Department of Orthodontics, Faculty of Dentistry, Marmara University, Istanbul, Turkey
| | - Hanife Nuray Yılmaz
- Department of Orthodontics, Faculty of Dentistry, Marmara University, Istanbul, Turkey
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Alkis HT, Pekince KA. Comparison of the asymmetry index determined on digital panoramic radiographic images and on posteroanterior cephalometric images: a retrospective cross-sectional study. J Orofac Orthop 2023; 84:244-250. [PMID: 36635560 DOI: 10.1007/s00056-022-00442-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 11/13/2022] [Indexed: 01/13/2023]
Abstract
OBJECTIVE The purpose of this study was to compare the asymmetry index determined on digital panoramic radiographic (PR) images and posteroanterior cephalometric (PACR) images. METHODS This study included 100 patients whose PR and PACR images were registered in a database. Condylar height, ramus height, and condylar height plus ramus height measurements were measured bilaterally. Condylar asymmetry, ramus asymmetry, and total asymmetry were evaluated. RESULTS There was a statistically significant difference between the right and left side for all measurements when evaluated on the PR and also on the PACR images (p < 0.01). When calculating the asymmetry index, the resulting condylar asymmetry and ramus asymmetry values did not show significant differences between PR and PACR images. On the other hand, only the presence of total asymmetry showed a statistically significant difference between techniques (p = 0.013). CONCLUSION Asymmetry indices can be reliably obtained from both PR and PACR images.
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Affiliation(s)
- Humeyra Tercanli Alkis
- Department of Oral and Maxillofacial Radiology, School of Dentistry, University of Akdeniz, Antalya, Turkey
| | - Kader Azlag Pekince
- Department of Oral and Maxillofacial Radiology, School of Dentistry, University of Karabuk, Demir Çelik Campus, Karabuk, Turkey.
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Türker G, Öztürk Yaşar M. Evaluation of associations between condylar morphology, ramus height, and mandibular plane angle in various vertical skeletal patterns: a digital radiographic study. BMC Oral Health 2022; 22:330. [PMID: 35941596 PMCID: PMC9361641 DOI: 10.1186/s12903-022-02365-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 07/29/2022] [Indexed: 12/02/2022] Open
Abstract
Background To evaluate condylar morphology, ramus height, and asymmetry indexes in patients with different vertical skeletal patterns and to determine the association between condylar and ramal measurements with the mandibular plane angle. Methods Dental panoramic radiographs of 60 patients with different skeletal patterns were evaluated. According to the cranial base (Sella-Nasion)-mandibular plane (SN-MP) angle, the patients were divided into three groups: normal angle (NA), low angle (LA), and high angle (HA). The condylar area, condylar perimeter, condylar heights, and ramus height were measured, and the asymmetry index value of each measurement was calculated. A one-way analysis of variance as well as a post hoc Tukey and Kruskall-Wallis tests were used to determine intergroup differences. Pearson’s correlation coefficient was used to determine the relationship between all measurements and SN-MP. Results The intergroup comparison of condylar area, condylar perimeter, condylar heights, and ramus height measurements showed that the patients in the LA group have statistically significantly greater values compared to those in the HA group. A statistically significant difference was detected between the NA and LA groups only in the condylar area measurements. There was no statistical difference only in the ramus height measurements between the NA and HA groups. Asymmetry index values of the groups were similar. The negative correlations were found between all measurements and the SN-MP angle. Conclusion HA individuals have lower ramus heights and smaller condylar morphologies than NA and LA individuals. In addition, as the SN-MP angle increases, the condyle dimensions and ramus height decrease, and this is a clinically important finding.
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Affiliation(s)
- Gökhan Türker
- Department of Orthodontics, Faculty of Dentistry, Mersin University, Mersin, Turkey.
| | - Meriç Öztürk Yaşar
- Department of Orthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
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Pithon MM, Marañón-Vásquez GA, da Silva LP, Coqueiro RDS, Lacerda Dos Santos R, Tanaka OM, Maia LC. Effect of treatment of transverse maxillary deficiency using rapid palatal expansion on oral health-related quality of life in children: A randomized controlled trial. Am J Orthod Dentofacial Orthop 2021; 161:172-181. [PMID: 34711482 DOI: 10.1016/j.ajodo.2021.08.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 08/01/2021] [Accepted: 08/01/2021] [Indexed: 11/24/2022]
Abstract
INTRODUCTION This trial aimed to longitudinally evaluate the effect of the treatment of transverse maxillary deficiency using rapid palatal expansion (RPE) on self-perceived oral health-related quality of life (OHRQOL) in children. METHODS Eighty participants aged 8-10 years with transverse maxillary deficiency and bilateral posterior crossbite were randomly assigned to 2 groups (n = 40 each): a group treated with RPE using hyrax-type appliances and a nontreated control group. OHRQOL was assessed by using the Child Perceptions Questionnaire for 8-10-year-olds at 4 times: before RPE, during RPE (T1), at the end of RPE (T2), and 1 month after the appliance removal (T3). Generalized mixed models were used for data analysis (α = 0.05). RESULTS Both groups exhibited similar demographic characteristics and OHRQOL scores at baseline. All participants completed the study. RPE had a time-dependent effect on OHRQOL. At T1 and T2, this therapy is expected to increase the overall OHRQOL scores by 1.17 times (ie, ∼17% increase; T1 95% confidence interval [CI], 1.08-1.26; T2 95% CI, 1.09-1.27; P = 0.001). In contrast, the overall OHRQOL scores at T3 are expected to be 0.28 times the baseline scores (ie, ∼72% reduction; T3 95% CI, 0.26-0.31; P = 0.001). All individual domains of the OHRQOL evidenced a positive impact of treatment at T3 (P = 0.001). Only the oral symptoms and social well-being domains showed a significantly negative impact of the treatment at T1 and T2. CONCLUSIONS Correction of the transverse maxillary deficiency by RPE in children aged 8-10 years improves OHRQOL. There is a temporary worsening of OHRQOL during the treatment of this condition using RPE. REGISTRATION This trial was not registered. PROTOCOL The protocol was not published before trial commencement. FUNDING This study was financed by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brazil, Financing Code 001.
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Affiliation(s)
- Matheus Melo Pithon
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil; Department of Health I, School of Dentistry, Southwest Bahia State University, Jequié, Bahia, Brazil.
| | - Guido Artemio Marañón-Vásquez
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Luciana Pereira da Silva
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | | - Lucianne Cople Maia
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
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Almaqrami BS, Alhammadi MS, Tang B, ALyafrusee ES, Hua F, He H. Three-dimensional morphological and positional analysis of the temporomandibular joint in adults with posterior crossbite: A cross-sectional comparative study. J Oral Rehabil 2021; 48:666-677. [PMID: 33586221 DOI: 10.1111/joor.13156] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 01/06/2021] [Accepted: 02/03/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVES The purpose of this study was to three-dimensionally (3D) evaluate the morphological and positional features of the temporomandibular joint (TMJ) in adults with unilateral and bilateral posterior crossbite compared with aligned control subjects. MATERIALS AND METHODS This cross-sectional comparative study analysed cone beam computed tomography (CBCT) images of 90 adult subjects' divided into three equal groups: bilateral posterior crossbite (BCG), unilateral posterior crossbite (UCG) and control group (CG). 3D measurements of the TMJ included the following: (a) position, angulation and inclination of the mandibular condyles; (b) centralisation of the condyles in their respective mandibular fossae; and (c) volumetric measurements of the TMJ spaces. Intra- and intergroup differences were identified using the paired Student's t test and an analysis of variance (ANOVA) followed by Tukey's post hoc test, respectively. RESULTS Regarding the intra-group side-based comparisons, there were significant differences in the anterior and superior joint spaces and the anteroposterior condylar joint position in the UCG. Intergroup comparisons revealed significant differences in the vertical condylar inclination, medial condylar position, condylar width and height, and volumetric joint space between the unaffected side of the UCG and left sides of the other groups. There were significant differences in the anteroposterior condylar inclination, medial condylar position, condylar width and height, anterior, posterior, superior and volumetric joint spaces, and anteroposterior condylar joint position between the crossbite side of the UCG and the right sides of the other groups. CONCLUSION Skeletal crossbite accompanied with characteristic morphological and positional TMJ features associated with unilateral posterior crossbite and are associated with side-specific TMJ asymmetry.
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Affiliation(s)
- Bushra Sufyan Almaqrami
- Department of Orthodontics, Hubei-MOST KLOS & KLOBM, School & Hospital of Stomatology, Wuhan University, Wuhan, China.,Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Ibb University, Ibb, Yemen
| | - Maged Sultan Alhammadi
- Division of Orthodontics and Dentofacial Orthopedics, Department of Preventive Dental Sciences, Faculty of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Bojun Tang
- Department of Orthodontics, Hubei-MOST KLOS & KLOBM, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Enas Senan ALyafrusee
- Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Ibb University, Ibb, Yemen.,Orthodontic Department, School of Stomatology, Lanzhou University, Lanzhou, China
| | - Fang Hua
- Department of Orthodontics, Hubei-MOST KLOS & KLOBM, School & Hospital of Stomatology, Wuhan University, Wuhan, China.,Center for Evidence-Based Stomatology, Hubei-MOST KLOS & KLOBM, School & Hospital of Stomatology, Wuhan University, Wuhan, China.,Division of Dentistry, School of Medical Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
| | - Hong He
- Department of Orthodontics, Hubei-MOST KLOS & KLOBM, School & Hospital of Stomatology, Wuhan University, Wuhan, China
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Ouni I, Ammar S, Charfeddine A, Chouchen F, Mansour L. Evaluation of condylar changes in relation to various malocclusions: A systematic review. SAUDI JOURNAL OF ORAL SCIENCES 2021. [DOI: 10.4103/sjoralsci.sjoralsci_25_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Southard TE, Marshall SD, Allareddy V, Shin K. Adult transverse diagnosis and treatment: A case-based review. Semin Orthod 2019. [DOI: 10.1053/j.sodo.2019.02.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mendoza LV, Bellot-Arcís C, Montiel-Company JM, García-Sanz V, Almerich-Silla JM, Paredes-Gallardo V. Linear and Volumetric Mandibular Asymmetries in Adult Patients With Different Skeletal Classes and Vertical Patterns: A Cone-Beam Computed Tomography Study. Sci Rep 2018; 8:12319. [PMID: 30120301 PMCID: PMC6098024 DOI: 10.1038/s41598-018-30270-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 07/25/2018] [Indexed: 11/25/2022] Open
Abstract
This study aimed to quantify the height of the mandibular condyle and ramus, condylar volume, and the asymmetry index in adult patients of different sex, skeletal class and vertical pattern using Cone-Beam Computed Tomography (CBCT), and to determine whether there were differences between these groups. The study used CBCT scans of 159 patients with a mean age of 32.32 ± 8.31 years. InVivoDental® software was used to perform both linear (condylar, ramal, and total height) and condylar volume measurements. Linear and volumetric asymmetries were calculated. There were not significant differences between right and left sides. The mean value obtained for condyle height was 7.27 mm, ramus height 42.3 mm, total height 49.6 mm and condyle volume 1907.1 mm3, with significant differences between men and women. Significantly higher values were found for condylar volume in hypodivergent patterns (p = 0.001) and for the asymmetry index of the condylar volume in Class II patients (p < 0.05). The prevalence of relevant asymmetry was high for condyle height and volume (73.1% y 75.6% respectively). Higher height and volume values were found among men, Class III, and hypodivergent patients. Linear and volumetric asymmetries were more prevalent among men, Class III and hyperdivergent patterns.
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Affiliation(s)
- Luz Victoria Mendoza
- Department of Orthodontics, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Carlos Bellot-Arcís
- Department of Orthodontics, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - José María Montiel-Company
- Department of Preventive Dentistry, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain.
| | - Verónica García-Sanz
- Department of Orthodontics, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - José Manuel Almerich-Silla
- Department of Preventive Dentistry, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Vanessa Paredes-Gallardo
- Department of Orthodontics, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
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Paknahad M, Shahidi S, Bahrampour E, Beladi AS, Khojastepour L. Cone Beam Computed Tomographic Evaluation of Mandibular Asymmetry in Patients with Cleft Lip and Palate. Cleft Palate Craniofac J 2018; 55:919-924. [DOI: 10.1597/15-280] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Objective: The purpose of the present study was to compare mandibular vertical asymmetry in patients with unilateral and bilateral cleft lip and palate and subjects with normal occlusion. Materials and Methods: Cone beam computed tomography scans of three groups consisting of 20 patients with unilateral cleft lip and palate, 20 patients affected by bilateral cleft lip and palate, and a control group of 20 subjects with normal occlusion were analyzed for this study. Condylar, ramal, and condylar plus ramal asymmetry indices were measured for all subjects using the method of Habets et al. Kruskal-Wallis and Mann-Whitney tests were used to determine any significant differences between the groups for all indices at the 95% level of confidence. Results: There were no significant differences regarding sex for all mandibular asymmetry indices in all three groups. All Asymmetry indices (condylar, ramal, and condylar plus ramal asymmetry) were significantly higher in the unilateral cleft group compared with the other two groups. Conclusion: Cone beam computed tomography images showed that patients with cleft lip and palate suffered from mandibular asymmetry. Subjects with unilateral cleft lip and palate had a more asymmetric mandible compared with the bilateral cleft lip and palate and control groups. Therefore, the mandible appears to be the leading factor in facial asymmetry in subjects with unilateral cleft lip and palate.
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Celik S, Celikoglu M, Buyuk SK, Sekerci AE. Mandibular vertical asymmetry in adult orthodontic patients with different vertical growth patterns: A cone beam computed tomography study. Angle Orthod 2016; 86:271-277. [PMID: 26065465 PMCID: PMC8603629 DOI: 10.2319/030515-135.1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Accepted: 05/01/2015] [Indexed: 11/11/2023] Open
Abstract
OBJECTIVE To evaluate condylar and ramal vertical asymmetry in adult orthodontic patients with different vertical growth patterns and a clinically normal sagittal skeletal pattern using cone-beam computed tomography (CBCT). MATERIALS AND METHODS The study sample consisted of 101 adult orthodontic patients (48 men and 53 women) divided into three groups according to their vertical growth patterns: high- (33 patients; mean age, 25.06 ± 6.05 years), low- (34 patients; mean age, 24.88 ± 5.22 years), and normal-angle (34 patients; mean age, 24.14 ± 4.26 years) groups. Condylar, ramal, condylar plus ramal height, and index measurements were performed using CBCT images and analyzed using one-way analysis of variance and post hoc Tukey tests. RESULTS There was no statistically significant difference in height measurements between right and left sides in each group, except a slight difference of approximately 0.5 mm for condylar height (CH) in the low-angle group (P < .05). No statistically significant gender differences were found for the values (P > .05). In the high-angle group, the ramal height (RH) and condylar plus ramal height (CH + RH) on both sides were found to be less than those of the low- (P < .001) and normal-angle groups (P < .017 and P > .017, respectively), and the asymmetry index values were slightly higher than those of the low- and normal-angle groups (P > .05). CONCLUSIONS The high-angle group showed statistically significantly smaller values of RH and CH + RH on both sides and statistically insignificantly higher asymmetry index values than the low- and normal-angle groups.
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Affiliation(s)
- Salih Celik
- Assistant Professor, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Mevlut Celikoglu
- Associate Professor, Department of Orthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Suleyman K. Buyuk
- Assistant Professor, Department of Orthodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey
| | - A. Ercan Sekerci
- Assistant Professor, Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
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Iodice G, Danzi G, Cimino R, Paduano S, Michelotti A. Association between posterior crossbite, skeletal, and muscle asymmetry: a systematic review. Eur J Orthod 2016; 38:638-651. [DOI: 10.1093/ejo/cjw003] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Al Taki A, Ahmed MH, Ghani HA, Al Kaddah F. Impact of different malocclusion types on the vertical mandibular asymmetry in young adult sample. Eur J Dent 2015; 9:373-377. [PMID: 26430365 PMCID: PMC4569988 DOI: 10.4103/1305-7456.163233] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Objective: The aim of this study was to investigate the vertical mandibular asymmetry in a group of adult patients with different types of malocclusions, based on Angle's dental classification. Materials and Methods: A sample of 102 patients (age range 19–28) who went for routine orthodontic treatment in the institution were divided into four groups: Class I, 26 patients; Class II/1, 30 patients; Class III, 23 patients; and control group (CG) with normal occlusion, 23 patients. Condylar asymmetry index (CAI), ramal asymmetry index (RAI), condylar-plus-ramal asymmetry index values were measured for all patients on panoramic radiographs. Data were analyzed using Kruskal–Wallis and Mann–Whitney U-test at the 95% confidence level (P < 0.05). Results: The results of the analysis showed that different occlusal types significantly affected the vertical symmetry of the mandible at the condylar level. Class I and Class II/1 malocclusion groups showed a significant difference in CAI values relative to the CG (P < 0.05, P < 0.001). No statistically significant difference was found between the CG and Class III malocclusion group (P > 0.05). Comparisons between Class II/1 and Class I malocclusions revealed a significant difference in CAI values (P < 0.01). Conclusions: Both Class II/1 and Class I malocclusions patients had significantly higher CAI values compared to CG and Class III group. CAI value was significantly higher in Class II/1 malocclusion compared to Class I malocclusion. Both these malocclusions could act as a predisposing factor for having asymmetric condyles if left untreated.
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Affiliation(s)
- Amjad Al Taki
- Orthodontist, Private Practice, Dubai, United Arab Emirates
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15
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Lemos AD, Katz CRT, Heimer MV, Rosenblatt A. Mandibular asymmetry: a proposal of radiographic analysis with public domain software. Dental Press J Orthod 2015; 19:52-8. [PMID: 25162566 PMCID: PMC4296616 DOI: 10.1590/2176-9451.19.3.052-058.oar] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective This preliminary study aimed to propose a new analysis of digital panoramic
radiographs for a differential diagnosis between functional and morphological
mandibular asymmetry in children with and without unilateral posterior
crossbite. Methods Analysis is based on linear and angular measurements taken from nine anatomic
points, demarcated in sequence directly on digital images. A specific plug-in was
developed as part of a larger public domain image processing software (ImageJ) to
automate and facilitate measurements. Since panoramic radiographs are typically
subject to magnification differences between the right and left sides, horizontal
linear measurements were adjusted for greater accuracy in both sides by means of a
Distortion Factor (DF). In order to provide a preliminary assessment of proposed
analysis and the developed plug-in, radiographs of ten patients (5 with unilateral
posterior crossbite and 5 with normal occlusion) were analyzed. Results Considerable divergence was found between the right and left sides in the
measurements of mandibular length and position of condyles in patients with
unilateral posterior crossbite in comparison to individuals with normal
occlusion. Conclusion Although there are more effective and accurate diagnostic methods, panoramic
radiography is still widespread, especially in emerging countries. This study
presented initial evidence that the proposed analysis can be an important resource
for planning early orthodontic intervention and, thus, avoid progression of
asymmetries and their consequences.
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ILLIPRONTI-FILHO E, FANTINI SM, CHILVARQUER I. Evaluation of mandibular condyles in children with unilateral posterior crossbite. Braz Oral Res 2015; 29:49. [DOI: 10.1590/1807-3107bor-2015.vol29.0049] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 12/10/2014] [Indexed: 11/22/2022] Open
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Halicioglu K, Celikoglu M, Buyuk SK, Sekerci AE, Candirli C. Effects of early unilateral mandibular first molar extraction on condylar and ramal vertical asymmetry. Eur J Dent 2014; 8:178-183. [PMID: 24966767 PMCID: PMC4054047 DOI: 10.4103/1305-7456.130595] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Objective: The objective of the following study is to investigate the mandibular vertical asymmetry in a group of patients with early unilateral mandibular first molar extractions. Materials and Methods: Mandibular asymmetry index measurements (condylar, ramal and condylar-plus-ramal) were performed on the panoramic radiographs of a study group including 51 patients (mean age: 18.60 ± 1.11 years) and a control group of 51 patients (mean age: 18.53 ± 1.29 years). Group I included patients with a unilateral mandibular first molar extracted before the age of 12 years. Group II included patients with no extractions and had excellent Class I relationships, no missing teeth and slight or moderate anterior crowding. A paired t-test was used to determine possible statistically significant differences between the sides for the measurements. Student's t-test was used for the comparison of asymmetry index values between the groups and genders. Results: No group showed statistically significant sex-or side-specific differences for posterior vertical height measurements. Condylar asymmetry index and ramal asymmetry index measurements were not statistically different between the groups, while condylar-plus-ramal asymmetry index (CRAI) measurements were statistically different between the groups (P = 0.019). Conclusions: A slight difference for CRAI value was found in patients with early unilateral mandibular first molar extractions.
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Affiliation(s)
- Koray Halicioglu
- Department of Orthodontics, Faculty of Dentistry, Abant Izzet Baysal University, Bolu, Turkiye
| | - Mevlut Celikoglu
- Department of Orthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye
| | - Suleyman K Buyuk
- Department of Orthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkiye
| | - Ahmet E Sekerci
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Erciyes University, Kayseri, Turkiye
| | - Celal Candirli
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye
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Bell RA, Kiebach TJ. Posterior crossbites in children: Developmental-based diagnosis and implications to normative growth patterns. Semin Orthod 2014. [DOI: 10.1053/j.sodo.2014.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kasimoglu Y, Tuna EB, Rahimi B, Marsan G, Gencay K. Condylar asymmetry in different occlusion types. Cranio 2014; 33:10-4. [DOI: 10.1179/0886963414z.00000000039] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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20
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Celikoglu M, Halicioglu K, Buyuk SK, Sekerci AE, Ucar FI. Condylar and ramal vertical asymmetry in adolescent patients with cleft lip and palate evaluated with cone-beam computed tomography. Am J Orthod Dentofacial Orthop 2013; 144:691-7. [DOI: 10.1016/j.ajodo.2013.07.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 07/01/2013] [Accepted: 07/01/2013] [Indexed: 10/26/2022]
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Abad-Santamaría L, López-de-Andrés A, Jiménez-Trujillo I, Ruíz C, Romero M. Effect of unilateral posterior crossbite and unilateral cleft lip and palate on vertical mandibular asymmetry. Ir J Med Sci 2013; 183:357-62. [DOI: 10.1007/s11845-013-1020-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Accepted: 09/14/2013] [Indexed: 10/26/2022]
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Park KR, Park HS, Piao Z, Kim MK, Yu HS, Seo JK, Lee SH. Three-dimensional vector analysis of mandibular structural asymmetry. J Craniomaxillofac Surg 2013; 41:338-44. [PMID: 23347884 DOI: 10.1016/j.jcms.2012.11.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 11/26/2012] [Accepted: 11/26/2012] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES The three-dimensional (3D) asymmetric structure of the mandible makes it necessary to analyze both its size and angle. Currently the developing 3D analysis techniques are not able to perform the simultaneous linear and angular measurements. Our aim was to evaluate mandibular asymmetry using a vector-based system by constructing 3D vectors for the mandibular functional units. MATERIAL AND METHODS We analyzed the 3D computed tomography images of normal control (N = 27) and asymmetric mandibles (N = 40). We created 3D vectors for the condylar, coronoid, body, gonial, and symphyseal functional units and compared the corresponding pairs of 3D vectors by calculating vector operations. RESULTS The vector difference and other vector components represented the individual 3D architectural pattern and severity of the asymmetric mandible. The body unit contributed most to mandibular asymmetry followed by the condylar unit. CONCLUSIONS The results indicate that 3D vector analysis can improve our understanding of the 3D architecture of asymmetric mandibles. This type of 3D vector analysis can be a useful tool for the comprehensive evaluation of its asymmetric mandibular structure.
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Affiliation(s)
- Kyung-Ran Park
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Republic of Korea
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Effects of early bilateral mandibular first molar extraction on condylar and ramal vertical asymmetry. Clin Oral Investig 2012; 17:1557-61. [PMID: 23001188 DOI: 10.1007/s00784-012-0843-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Accepted: 09/09/2012] [Indexed: 11/27/2022]
Abstract
OBJECTIVES This study aims to investigate the mandibular vertical asymmetry in a group of adult patients who had early bilateral mandibular first molar extractions. METHODS Mandibular asymmetry index measurements (condylar, ramal, and condylar plus ramal) were made on the panoramic radiographs of a study group including 30 subjects (mean age, 18.22 ± 1.30 years) and a control group of 25 subjects (mean age, 18.24 ± 1.17 years). Group I comprised the control group patients with no extractions and had excellent class I relationships, no missing teeth, and slight or moderate anterior crowding. Group II included patients with a bilateral mandibular first molar teeth extracted before the age of 12 years. Student's t test was used for the comparison of asymmetry index values between the groups. A paired t test was used to determine possible statistically significant differences between the sides for condylar, ramal, and condylar plus ramal height measurements. RESULTS No group showed statistically significant side-specific differences for posterior vertical height measurements. Condylar asymmetry index (CAI), ramal asymmetry index, and condylar plus ramal asymmetry index measurements were not statistically different between the groups (p > 0.05). CONCLUSIONS CAI values were significantly high when compared with the 3 % threshold value in the both groups, but comparisons between the groups were not statistically significant. CLINICAL RELEVANCE This article investigates the effects of early bilateral mandibular molar teeth extraction that has never been investigated in the literature. The present study showed that the lengths of the condylar, ramal, and condylar plus ramal height were less in the study group than in a well-matched control group of without extraction.
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Martina R, Cioffi I, Farella M, Leone P, Manzo P, Matarese G, Portelli M, Nucera R, Cordasco G. Transverse changes determined by rapid and slow maxillary expansion--a low-dose CT-based randomized controlled trial. Orthod Craniofac Res 2012; 15:159-68. [PMID: 22812438 DOI: 10.1111/j.1601-6343.2012.01543.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To compare transverse skeletal changes produced by rapid (RME) and slow (SME) maxillary expansion using low-dose computed tomography. The null hypothesis was that SME and RME are equally effective in producing skeletal maxillary expansion in patients with posterior crossbite. SETTING AND SAMPLE POPULATION This study was carried out at the Department of Oral Sciences, University of Naples Federico II, Italy. Twelve patients (seven males, five females, mean age ± SD: 10.3 ± 2.5 years) were allocated to the SME group and 14 patients (six males, eight females, mean age ± SD: 9.7 ± 1.5 years) to the RME group. MATERIALS AND METHODS All patients received a two-band palatal expander and were randomly allocated to either RME or SME. Low-dose computed tomography was used to identify skeletal and dental landmarks and to measure transverse maxillary changes with treatment. RESULTS A significant increase in skeletal transverse diameters was found in both SME and RME groups (anterior expansion = 2.2 ± 1.4 mm, posterior expansion = 2.2 ± 0.9 mm, pterygoid expansion = 0.9 ± 0.8 mm). No significant differences were found between groups at anterior (SME = 1.9 ± 1.3 mm; RME = 2.5 ± 1.5 mm) or posterior (SME = 1.9 ± 1.0 mm; RME = 2.4 ± 0.9 mm) locations, while a statistically significant difference was measured at the pterygoid processes (SME = 0.6 ± 0.6 mm; RME = 1.2 ± 0.9 mm, p = 0.04), which was not clinically relevant. CONCLUSION Rapid maxillary expansion is not more effective than SME in expanding the maxilla in patients with posterior crossbite.
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Affiliation(s)
- R Martina
- Department of Oral Sciences, Section of Orthodontics and Temporomandibular Disorders, University of Naples Federico II, Naples, Italy
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Ferro F, Spinella P, Lama N. Transverse maxillary arch form and mandibular asymmetry in patients with posterior unilateral crossbite. Am J Orthod Dentofacial Orthop 2011; 140:828-38. [DOI: 10.1016/j.ajodo.2011.08.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2009] [Revised: 04/18/2011] [Indexed: 11/17/2022]
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26
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Wang MQ, He JJ, Chen CS, Widmalm SE. A preliminary anatomical study on the association of condylar and occlusal asymmetry. Cranio 2011; 29:111-6. [PMID: 21661585 DOI: 10.1179/crn.2011.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The aim of this study was to test the hypothesis that condylar and occlusion asymmetry are not associated. For each of 22 skulls, the asymmetry of condyles was graded by one examiner and the asymmetry of occlusion by another examiner, both blinded to each other's evaluation, as 0 = symmetrical, 1 = mild asymmetrical and 2 = severe asymmetrical. There were 18 condyles graded the same as to their occlusion, but in four, the grades differed by one degree. Nine were graded symmetrical, seven were mild, and six were graded severely asymmetrical condyles. The corresponding figures for occlusion were: 10 were graded symmetrical, seven were graded mildly asymmetrical, and five were graded severely asymmetrical occlusion. The relation between occlusion and condylar asymmetry was tested using Goodman-Kruskal's gamma and was found to be 0.970 (p < 0.001). The null hypothesis was not supported. The results indicate that asymmetry of occlusion and condyles are associated, which indicates the need for further studies on larger samples, and in vivo studies.
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Affiliation(s)
- Mei-Qing Wang
- Dept. of Oral Anatomy, Physiology and TMD, School of Stomatology, Fourth Military Medical University, 145 West Changle Road Xi'an, China.
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Jena AK, Singh SP, Utreja AK. Effects of sagittal maxillary growth hypoplasia severity on mandibular asymmetry in unilateral cleft lip and palate subjects. Angle Orthod 2011; 81:872-7. [PMID: 21341999 DOI: 10.2319/110610-646.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To test the hypothesis that sagittal maxillary growth hypoplasia has no effect on mandibular asymmetry among subjects with complete unilateral cleft lip and palate (UCLP). DESIGN A total of 86 subjects (normal noncleft, 42; UCLP, 44) in the age range of 15 to 25 years were chosen. Normal noncleft subjects were included in Group I. Based on the severity of sagittal maxillary growth hypoplasia, subjects with UCLP were divided into two groups. Subjects with UCLP in whom the SNM angle was ≥71 degrees and the M-point to Nasion perpendicular distance was ≤-10 mm were included in Group II. Group III consisted of subjects with UCLP in whom the SNM angle was <71 degrees and the M-point to Nasion perpendicular distance was >-10 mm. The mandibular asymmetry index (condylar, ramal, and condylar+ramal), gonial angle, and depth of the antigonial notch of three groups of subjects were examined on orthopantomograms (OPGs). RESULTS Among Group II subjects in whom sagittal maxillary growth was near normal, ramal and condylar+ramal heights were significantly less on the cleft side than on the normal side (P < .01). Condylar, ramal, and condylar+ramal asymmetry indices were significantly greater among Group II subjects. Mandibular asymmetry indices among Group III subjects were comparable with those in Group I subjects. CONCLUSION The hypothesis was rejected. The mandible was significantly asymmetrical among subjects with UCLP in whom sagittal maxillary growth was near normal, whereas the mandible was nearly symmetrical among subjects with UCLP in whom sagittal maxillary growth hypoplasia was very severe.
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Affiliation(s)
- Ashok Kumar Jena
- Unit of Orthodontics, Oral Health Sciences Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
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Baratieri C, Alves Jr M, Sant’anna EF, Nojima MDCG, Nojima LI. 3D mandibular positioning after rapid maxillary expansion in Class II malocclusion. Braz Dent J 2011; 22:428-34. [DOI: 10.1590/s0103-64402011000500014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
This study investigated, using cone beam computed tomography (CBCT), the spatial mandibular positioning after rapid maxillary expansion (RME) in Class II Division 1 malocclusion. This prospective study evaluated 17 children (mean initial age 10.36 years old) presenting Class II, Division 1 malocclusion and skeletal maxillary constriction that underwent to RME Haas’ protocol. CBCT was performed before treatment (T1), immediately after the stabilization of expander screw (T2) and after the retention period of 6 months (T3). The scans were managed in Dolphin Imaging® 11.0 software, where landmarks (right and left condylion, right and left gonion, and menton) were positioned and measured in relation to sagittal, coronal and axial plane to verify, respectively, transverse, anteroposterior and vertical displacement of the mandible. Paired Student’s t-test was used to identify significant differences (p<0.05) between T1 and T2, T2 and T3, and T1 and T3. After RME, right and left gonion moved downward (1.11 mm and 0.89 mm) and menton displaced downward (1.90 mm) and backward (1.50 mm). During the retention period, only anteroposterior displacement was significant, with the right and left gonion (0.97 mm and 1.26 mm) and the menton (2.29 mm) moving forward. Three-dimensional assessment of the mandible in Class II Division 1 patients subjected to RME showed a transitory backward and downward mandibular positioning, without any lateral displacement. The 6-month retention period allowed the mandible shifting significantly forward, exhibiting a more anterior position compared with the initial condition, even remaining in a more downward direction.
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Kurt G, Bayram M, Uysal T, Ozer M. Mandibular asymmetry in cleft lip and palate patients. Eur J Orthod 2009; 32:19-23. [PMID: 19734371 DOI: 10.1093/ejo/cjp063] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The aims of this study were to evaluate condylar, ramal, and condylar plus ramal mandibular vertical asymmetry in a group of cleft lip and palate (CLP) patients and compared with subjects with a 'normal' occlusion. Mandibular asymmetry index (condylar, ramal, and condylar plus ramal) and gonial angle measurements were examined on panoramic radiographs. The study groups comprised 20 unilateral cleft lip and palate (UCLP) patients (10 males and 10 females; mean age 13.03 +/- 3.33 years), 20 bilateral cleft lip and palate (BCLP) patients (10 males and 10 females; mean age 13.73 +/- 3.53 years), and a control group of 20 subjects (9 males and 11 females; mean age 14.35 +/- 2.46 years) with a normal occlusion. Kruskal-Wallis one-way analysis of variance was used to determine statistically significant differences between the groups for condylar, ramal, and condylar plus ramal asymmetry index measurements at the 95 per cent confidence interval. None of the investigated groups showed statistically significant gender differences for posterior vertical height measurements (P > 0.05). Asymmetry indices were similar, with no statistically significant differences found in any of the groups. However, gonial angle showed statistically significant differences (P < 0.05) in the UCLP group and condylar height (CH) in the BCLP patients (P < 0.001). Except for CH measurement in the BCLP group, CLP patients have symmetrical mandibles when compared with a normal occlusion sample.
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Affiliation(s)
- Gokmen Kurt
- Department of Orthodontics, Universities of Erciyes, Kayseri, Turkey
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Condylar and ramal vertical asymmetry in unilateral and bilateral posterior crossbite patients and a normal occlusion sample. Am J Orthod Dentofacial Orthop 2009; 136:37-43. [DOI: 10.1016/j.ajodo.2007.06.019] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2007] [Revised: 06/19/2007] [Accepted: 06/19/2007] [Indexed: 11/22/2022]
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Piancino MG, Farina D, Talpone F, Merlo A, Bracco P. Muscular activation during reverse and non-reverse chewing cycles in unilateral posterior crossbite. Eur J Oral Sci 2009; 117:122-8. [DOI: 10.1111/j.1600-0722.2008.00601.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Çağlaroğlu M, Kilic N, Erdem A. Effects of early unilateral first molar extraction on skeletal asymmetry. Am J Orthod Dentofacial Orthop 2008; 134:270-5. [DOI: 10.1016/j.ajodo.2006.07.036] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2006] [Revised: 07/01/2006] [Accepted: 07/01/2006] [Indexed: 11/27/2022]
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Condylar asymmetry in unilateral posterior crossbite patients. Am J Orthod Dentofacial Orthop 2008; 133:382-7. [PMID: 18331937 DOI: 10.1016/j.ajodo.2006.04.041] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2006] [Revised: 04/11/2006] [Accepted: 04/11/2006] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Posterior crossbite is defined as an abnormal buccolingual relationship between opposing posterior teeth including the canines in centric occlusion. The most common form of posterior crossbite is unilateral with a functional shift of the mandible toward the crossbite side. Lateral shift of the mandible in functional crossbite patients results in mandibular skeletal deflection to the crossbite side. Thus, the asymmetrical position of the mandible in these patients can result in asymmetrical condylar heights. The purpose of this study was to investigate condylar and ramal asymmetries in unilateral crossbite patients as compared with normocclusive subjects. METHODS The study groups included 81 patients with unilateral posterior crossbite and a control group of 75 patients with normal occlusion. Condylar, ramal, and condylar-plus-ramal asymmetry values were computed for all subjects on panoramic radiographs. Data were analyzed statistically with ANOVA for repeated measures and univariate ANOVA. RESULTS The patients with unilateral posterior crossbite had more asymmetric condyles than did the controls. In addition, condylar, ramal, and condylar-plus-ramal heights on the crossbite side were smaller than those on the noncrossbite side. CONCLUSIONS Subjects with functional unilateral posterior crossbite have asymmetrical condyles.
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Kurt G, Uysal T, Sisman Y, Ramoglu SI. Mandibular Asymmetry in Class II Subdivision Malocclusion. Angle Orthod 2008; 78:32-7. [DOI: 10.2319/021507-73.1] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2007] [Accepted: 03/01/2007] [Indexed: 11/23/2022] Open
Abstract
Abstract
Objective: To evaluate the condylar and ramal mandibular asymmetry in a group of patients with Class II subdivision malocclusion to identify possible gender differences between male and female subjects.
Materials and Methods: Mandibular asymmetry measurements (condylar, ramal, and condylar-plus-ramal asymmetry values) were performed on the panoramic radiographs of 80 subjects (34 male and 46 female). The study group consisted of 40 Class II subdivision patients (18 male and 22 female; mean age 14.53 ± 3.14 years). The control group consisted of 40 subjects with normal occlusion (16 male and 24 female; mean age 14.43 ± 3.05 years). The Kruskal-Wallis test was used to determine the possible statistically significant differences between the groups for condylar, ramal, and condylar-plus-ramal asymmetry index measurements. Identified differences between groups were further analyzed using the Mann-Whitney U-test at the 95% confidence interval (P < .05).
Results: No gender-related difference was found for any of the asymmetry indices. Comparison of condylar, ramal, and condylar-plus-ramal asymmetry index values and gonial angle measurements for Class I and Class II sides in the Class II subdivision group and for right and left sides in the Class I group showed no statistically significant differences. However, the Class II subdivision group has longer values for condylar, ramal, and condylar-plus-ramal height measurements and only these differences were statistically significant (P < .001).
Conclusions: Except for condylar ramal and condylar-plus-ramal height measurements, Class II subdivision patients have symmetrical condyles when compared to normal occlusion samples according to Habbet's mandibular asymmetry indices.
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Affiliation(s)
- Gökmen Kurt
- a Assistant Professor, Department of Orthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
| | - Tancan Uysal
- b Associate Professor and Chair, Department of Orthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
| | - Yildiray Sisman
- c Assistant Professor and Chair, Department of Oral Diagnosis and Radiology, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
| | - Sabri Ilhan Ramoglu
- d Research Assistant, Department of Orthodontics, Faculty of Dentistry, Selcuk University, Konya, Turkey
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