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Pereira F, Cebotari M, Camelo I, Coelho L. Addressing Acromegaly-Related Malocclusion With Surgery-First Orthognathic Surgery: A Clinical Case Report. Cureus 2024; 16:e61999. [PMID: 38855491 PMCID: PMC11162603 DOI: 10.7759/cureus.61999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2024] [Indexed: 06/11/2024] Open
Abstract
Angle's class III malocclusions are characterized by the anterior positioning of the mandible in relation to the maxilla. The discrepancy can be caused by an anterior deficiency of the maxilla, excessive mandibular prognathism, or a combination of both. Acromegaly is a dysfunction caused by the excessive production of growth hormone (GH), which leads to systemic changes and orofacial manifestations. In acromegaly caused by a pituitary adenoma, which secretes an excessive amount of GH, disproportionate mandibular growth may occur, leading to skeletal class III malocclusion in adulthood. Excessive growth stops when the tumor is removed, but the skeletal deformity persists, requiring orthognathic surgery to reposition the mandible. This article reports the case of a 31-year-old man referred to the maxillofacial surgery consultation due to severe Angle's class III malocclusion, with prognathism, mandibular asymmetry, and maxillary retrusion. He had a history of disproportionate soft tissue growth (hands and feet) up to 18 years old, less evident after that age. Considering the possibility of acromegaly due to a pituitary adenoma, imaging studies (CT scan and magnetic resonance imaging (MRI)) and directed analytical studies were requested. When the diagnosis was confirmed, the patient was referred to endocrinology and neurosurgery consultations. After undergoing endoscopic resection of the pituitary adenoma, the patient underwent surgery-first orthognathic surgery to correct the dental malocclusion.
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Affiliation(s)
- Flávia Pereira
- Maxillofacial Surgery Department, Centro Hospitalar Universitário de São João, Porto, PRT
| | - Mariana Cebotari
- Maxillofacial Surgery Department, Centro Hospitalar Universitário de São João, Porto, PRT
| | - Inês Camelo
- Maxillofacial Surgery Department, Centro Hospitalar Universitário de São João, Porto, PRT
| | - Lígia Coelho
- Maxillofacial Surgery Department, Centro Hospitalar Universitário de São João, Porto, PRT
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Zohud O, Lone IM, Midlej K, Obaida A, Masarwa S, Schröder A, Küchler EC, Nashef A, Kassem F, Reiser V, Chaushu G, Mott R, Krohn S, Kirschneck C, Proff P, Watted N, Iraqi FA. Towards Genetic Dissection of Skeletal Class III Malocclusion: A Review of Genetic Variations Underlying the Phenotype in Humans and Future Directions. J Clin Med 2023; 12:jcm12093212. [PMID: 37176653 PMCID: PMC10179046 DOI: 10.3390/jcm12093212] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/13/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
INTRODUCTION Skeletal abnormalities and malocclusions have varied features that impact populations globally, impairing aesthetics and lowering life quality. The prevalence of the Skeletal Class III disease is the lowest among all angle malocclusions, with varied prevalence across nations. Environmental, genetic, and societal factors play a role in its numerous etiologies. In this study, we conducted a thorough search across the published data relating to quantitative trait loci (QTL) and the genes associated with Class III progression in humans, discussed these findings and their limitations, and proposed future directions and strategies for studying this phenotype. METHODS An inclusive search of published papers in the PubMed and Google Scholar search engines using the following terms: 1. Human skeletal Class III; 2. Genetics of Human skeletal Class III; 3. QTL mapping and gene associated with human skeletal Class III; 4. enriched skeletal Class-III-malocclusion-associated pathways. RESULTS Our search has found 53 genes linked with skeletal Class III malocclusion reported in humans, genes associated with epigenetics and phenomena, and the top 20 enriched pathways associated with skeletal Class III malocclusion. CONCLUSIONS The human investigations yielded some contentious conclusions. We conducted a genome-wide association study (GWAS), an epigenetics-wide association study (EWAS), RNA-seq analysis, integrating GWAS and expression quantitative trait loci (eQTL), micro- and small-RNA, and long non-coding RNA analysis in tissues connected to skeletal Class III malocclusion phenotype in tissues connected with the skeletal phenotype. Finally, we invite regional, national, and international orthodontists and surgeons to join this effort by contributing human samples with skeletal Class III malocclusion following the accepted Helsinki ethical protocol to challenge these phenomena jointly.
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Affiliation(s)
- Osayd Zohud
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel
| | - Iqbal M Lone
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel
| | - Kareem Midlej
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel
| | - Awadi Obaida
- Center for Dentistry Research and Aesthetics, Jatt 4491800, Israel
| | - Samir Masarwa
- Center for Dentistry Research and Aesthetics, Jatt 4491800, Israel
| | - Agnes Schröder
- Department of Orthodontics, University Hospital of Regensburg, University of Regensburg, 93047 Regensburg, Germany
- Institute for Clinical Microbiology and Hygiene, 93053 Regensburg, Germany
| | - Erika C Küchler
- Department of Orthodontics, University Hospital of Regensburg, University of Regensburg, 93047 Regensburg, Germany
| | - Aysar Nashef
- Department of Oral and Maxillofacial Surgery, Baruch Padeh Medical Center, Poriya, Tabaria 1520800, Israel
| | - Firas Kassem
- Department of Otorhinolaryngology, Head and Neck Surgery, Meir Medical Center, Kfar Saba 4428164, Israel
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel
| | - Vadim Reiser
- Department of Oral & Maxillofacial Surgery, Rabin Medical Center, Beilinson Campus, Petah Tikva 4941492, Israel
| | - Gavriel Chaushu
- Department of Oral & Maxillofacial Surgery, Rabin Medical Center, Beilinson Campus, Petah Tikva 4941492, Israel
- School of Dental Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Richard Mott
- Department of Genetics, University College of London, London SE1 7EH, UK
| | - Sebastian Krohn
- Department of Orthodontics, University Hospital of Regensburg, University of Regensburg, 93047 Regensburg, Germany
| | - Christian Kirschneck
- Department of Orthodontics, University Hospital of Regensburg, University of Regensburg, 93047 Regensburg, Germany
| | - Peter Proff
- Department of Orthodontics, University Hospital of Regensburg, University of Regensburg, 93047 Regensburg, Germany
| | - Nezar Watted
- Center for Dentistry Research and Aesthetics, Jatt 4491800, Israel
- Department of Orthodontics, Faculty of Dentistry, Arab America University, Jenin 34567, Palestine
- Gathering for Prosperity Initiative, Jatt 4491800, Israel
| | - Fuad A Iraqi
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel
- Department of Orthodontics, University Hospital of Regensburg, University of Regensburg, 93047 Regensburg, Germany
- Gathering for Prosperity Initiative, Jatt 4491800, Israel
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Lower Molar Distalization Using Clear Aligners: Bodily Movement or Uprighting? A Preliminary Study. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12147123] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
Background: Lower molar distalization is considered to be one of the most difficult movements to obtain with clear aligners. The aim of this study was to evaluate the possibility to distalize the lower molars using clear aligners in adults without miniscrews. Material and methods: rx cephalograms of 16 patients (8 males, 8 females; mean age of 25.6 years), who underwent lower molar distalization, were analyzed. Cephalograms were taken before the beginning of treatment (T0) and after the end of treatment (T1). Dental and skeletal changes between T0 and T1 were evaluated. The level of significance was set at p < 0.05. Results: At T1, the lower second molar moved distally 2.47 mm, but there was a significant tipping (p = 0.027); the same result was found at the first molar, with a mean distal movement of 1.16 mm and a significant tipping (p = 0.003). No significant changes were detected on the sagittal and vertical skeletal variables. Conclusion: Clear aligner therapy can provide more distal tipping than bodily movement in the lower molars when a distalization is programmed. This movement could be sufficient to correct the initial malocclusion and gain a class I molar relationship.
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Jaruga A, Ksiazkiewicz J, Kuzniarz K, Tylzanowski P. Orofacial Cleft and Mandibular Prognathism-Human Genetics and Animal Models. Int J Mol Sci 2022; 23:ijms23020953. [PMID: 35055138 PMCID: PMC8779325 DOI: 10.3390/ijms23020953] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/24/2021] [Accepted: 01/13/2022] [Indexed: 12/12/2022] Open
Abstract
Many complex molecular interactions are involved in the process of craniofacial development. Consequently, the network is sensitive to genetic mutations that may result in congenital malformations of varying severity. The most common birth anomalies within the head and neck are orofacial clefts (OFCs) and prognathism. Orofacial clefts are disorders with a range of phenotypes such as the cleft of the lip with or without cleft palate and isolated form of cleft palate with unilateral and bilateral variations. They may occur as an isolated abnormality (nonsyndromic-NSCLP) or coexist with syndromic disorders. Another cause of malformations, prognathism or skeletal class III malocclusion, is characterized by the disproportionate overgrowth of the mandible with or without the hypoplasia of maxilla. Both syndromes may be caused by the presence of environmental factors, but the majority of them are hereditary. Several mutations are linked to those phenotypes. In this review, we summarize the current knowledge regarding the genetics of those phenotypes and describe genotype-phenotype correlations. We then present the animal models used to study these defects.
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Affiliation(s)
- Anna Jaruga
- Laboratory of Molecular Genetics, Department of Biomedical Sciences, Medical University of Lublin, Chodzki 1, 20-093 Lublin, Poland; (A.J.); (J.K.)
| | - Jakub Ksiazkiewicz
- Laboratory of Molecular Genetics, Department of Biomedical Sciences, Medical University of Lublin, Chodzki 1, 20-093 Lublin, Poland; (A.J.); (J.K.)
- Center for Molecular and Vascular Biology, Department of Cardiovascular Sciences, University of Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Krystian Kuzniarz
- Department of Maxillofacial Surgery, Medical University of Lublin, Staszica 11, 20-081 Lublin, Poland;
| | - Przemko Tylzanowski
- Laboratory of Molecular Genetics, Department of Biomedical Sciences, Medical University of Lublin, Chodzki 1, 20-093 Lublin, Poland; (A.J.); (J.K.)
- Department of Development and Regeneration, University of Leuven, Herestraat 49, 3000 Leuven, Belgium
- Correspondence:
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Barakat A, Alasseri N, Assari A, Koppolu P, Al-Saffan A. A case report on surgical–orthodontic correction of skeletal class III malocclusion with severe prognathic mandible and retrognathic maxilla. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2022; 14:S1054-S1058. [PMID: 36110821 PMCID: PMC9469259 DOI: 10.4103/jpbs.jpbs_85_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 02/26/2022] [Indexed: 11/04/2022] Open
Abstract
Mandibular prognathism combined with a retrognathic maxilla is a skeletal discrepancy that is difficult to correct. We report a case of a 25-year-old Saudi male patient with skeletal class-III malocclusion due to severe prognathic mandible who was referred to an orthodontist at Prince Sultan Military Medical City. Complete clinical examination, radiographic assessment, and study models revealed class-III malocclusion due to anteroposterior deficiency of the maxilla and severe prognathic mandible. Orthognathic surgery was performed 18 months after the presurgical orthodontic phase. A 10-mm LeFort I advancement of the maxillary arch, with impaction of 3 mm, was performed with a bilateral sagittal split osteotomy (BSSO) of 11 mm. Stable occlusion and superior aesthetics were observed at the 1-year follow-up. Surgical–orthodontic treatment endows an adult patient with a class-III malocclusion or mandibular prognathism with a stable occlusion and superior aesthetics.
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Atteeri A, Neela PK, Mamillapalli PK, Sesham VM, Keesara S, Chandra J, Monica U, Mohan V, Miryala S, Khan FA, Makthal P. Analysis of MYO1H Gene Polymorphism in Skeletal Class-III Malocclusion Due to Mandibular Prognathism. Glob Med Genet 2021; 8:156-161. [PMID: 34877573 PMCID: PMC8635817 DOI: 10.1055/s-0041-1731066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 04/13/2021] [Indexed: 12/31/2022] Open
Abstract
Background
Mandibular prognathism (MP) is a craniofacial deformity resulting from the combined effects of environmental and genetic factors. Although various linkage and genome-wide association studies for mandibular prognathism have identified multiple strongly associated regions and genes, the causal genes and variants responsible for the deformity remained ambiguous.
Aim
This research work was aimed to study the association between polymorphism rs10850110 of the
MYO1H
gene and skeletal class-III malocclusion in our local population.
Materials and Methods
Thirty patients with skeletal class III due to mandibular prognathism in the study group and 30 patients with skeletal class I in the control group were selected for this study. These patients were from both sexes and above age 10 years. Based on the cephalometric values, patients were categorized into study and control groups. SNB (angle between sella, nasion and point B at nasion) greater than 82 degrees with an ANB (angle between point A, nasion and point B at nasion) of less than 0 degrees in the study group and ANB (angle between point A, nasion and point B at nasion) of 2 to 4 degrees in the control group were categorized. The polymorphism (rs10850110) of the
MYO1H
gene was genotyped using polymerase chain reaction and restriction fragment length polymorphism. Associations were tested with SNP exact test using SNPstats software.
Results
The single-nucleotide polymorphism rs10850110 showed a statistically significant association with mandibular prognathism. The G allele of marker rs10850110 (5′ of myosin1H
- MYO1H
) was overrepresented when compared with the “A” allele in mandibular prognathism cases (
p
< 0.0001), and this was very significant.
Conclusion
These results suggest that the rs10850110 polymorphism of the
MYO1H
gene is associated with an increased risk for mandibular prognathism.
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Affiliation(s)
- Anjana Atteeri
- Department of Orthodontics, Kamineni Institute of Dental Sciences, Narketpally, Telangana, India
| | - Praveen Kumar Neela
- Department of Orthodontics, Kamineni Institute of Dental Sciences, Narketpally, Telangana, India
| | - Pavan Kumar Mamillapalli
- Department of Orthodontics, Kamineni Institute of Dental Sciences, Narketpally, Telangana, India
| | - Vasu M Sesham
- Department of Orthodontics, Kamineni Institute of Dental Sciences, Narketpally, Telangana, India
| | - Sreekanth Keesara
- Department of Orthodontics, Kamineni Institute of Dental Sciences, Narketpally, Telangana, India
| | - Jaya Chandra
- Department of Orthodontics, Kamineni Institute of Dental Sciences, Narketpally, Telangana, India
| | - Udayini Monica
- Department of Orthodontics, Kamineni Institute of Dental Sciences, Narketpally, Telangana, India
| | - Vasavi Mohan
- Department of Genetics and Molecular Medicine, Vasavi Medical and Research Centre, Hyderabad, Telangana, India
| | - Shubhangi Miryala
- Department of Genetics and Molecular Medicine, Vasavi Medical and Research Centre, Hyderabad, Telangana, India
| | - Fatema A Khan
- Department of Genetics and Molecular Medicine, Vasavi Medical and Research Centre, Hyderabad, Telangana, India
| | - Priyanka Makthal
- Department of Genetics and Molecular Medicine, Vasavi Medical and Research Centre, Hyderabad, Telangana, India
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Liu Y, Yang K. Three-dimensional changes in the upper airway and craniomaxillofacial morphology of patients with Angle Class III malocclusion treated with a Frankel III appliance. BMC Oral Health 2021; 21:634. [PMID: 34886826 PMCID: PMC8662879 DOI: 10.1186/s12903-021-02013-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 12/03/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Angle Class III malocclusion, characterized by a concave profile, can cause serious harm to children's physical and mental health. The Frankel III appliance is an effective treatment for Angle Class III malocclusion in mixed denition. We explored three-dimensional changes in the upper airway and craniomaxillofacial morphology, after one year of Frankel III appliance treatment, in children with Angle Class III malocclusion. METHODS We included 20 children (9 males), aged 8-10 years, with Angle Class III malocclusion from the Orthodontics Department of our hospital. Each child was treated with a Frankel III appliance for one year. Cone beam computed tomography was performed before and after treatment to evaluate three-dimensional changes in the upper airway and craniomaxillofacial morphology. RESULTS After one year of treatment, in the upper airway, we observed significant increases in the nasopharynx volume and height (P < 0.05); the velopharyngeal volume, height, and average cross-sectional area (P < 0.05); the glossopharynx volume and minimum cross-sectional area (P < 0.05); and the laryngopharynx height (P < 0.05). Accordingly, the total upper airway volume, height, and average cross sectional area increased significantly (P < 0.05). An examination of craniomaxillofacial morphology showed significant increases in some bone tissues (P < 0.05) and dental measurements, and a significant reduction in the inclination of the mandibular central incisor (P < 0.05). CONCLUSION Children with Angle class III malocclusion treated with a Frankel III appliance showed no upper airway narrowing, even after repositioning the mandible posteriorly. Moreover, treatment promoted forward maxilla development and increased its width, in both the dental arch and alveolar bone, which provided a more harmonious craniofacial morphology.
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Affiliation(s)
- Yinan Liu
- Department of Orthodontics, Beijing Stomatological Hospital, Capital Medical University, Tian Tan Xi Li #4, Dongcheng District, Beijing, 100050, China
| | - Kai Yang
- Department of Orthodontics, Beijing Stomatological Hospital, Capital Medical University, Tian Tan Xi Li #4, Dongcheng District, Beijing, 100050, China.
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Damrongsirirat N, Kaboosaya B, Siriwatana K, Subbalekha K, Jansisyanont P, Pimkhaokham A. Complications related to orthognathic surgery: A 10-year experience in oral and maxillofacial training center. J Craniomaxillofac Surg 2021; 50:197-203. [PMID: 34876326 DOI: 10.1016/j.jcms.2021.11.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 10/28/2021] [Accepted: 11/25/2021] [Indexed: 10/19/2022] Open
Abstract
This article aimed to review adverse events and complications to orthognathic surgery based upon 10 years. This study was a retrospective investigation between 2009 and 2018. Independent variables such as sex, age, pre-operative conditions, diagnosis, type of surgery, bleeding volume, surgery duration, and hospitalization were recorded. The data regarding orthognathic surgery adverse events and complications were evaluated and statistically analyzed with a significance level of p < 0.05. A total of 891 patients were included in this study (male 39.1%, female 60.9%) with a mean age of 26.4 ± 6.09 years. A neurosensory disturbance was found as immediate post-operative sequelae as 93.5%. The four most frequent complications had a relapse (6.4%), post-operative TMD (5.7%), unfavorable osteotomy (5.5%), and infection (4.9%), which seem to be more common in males. An average blood loss was 497 ± 371 ml and the average operative time was 401 ± 109.3 min. Complication rates were statistically affected by bleeding volume (p-value = 0.01), operative time (p-value = 0.03), and type of skeletal deformity (p-value = 0.01). Although numerous complications were recorded, no fatal complications were experienced. Bleeding time, operative time, and skeletal classification have significant influence on orthognathic surgery complications. However, a multitude of factors could be modified to reduce the complication rate and improve the result of the treatment. One of the most significant factors was the operative time.
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Affiliation(s)
- Napat Damrongsirirat
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Boosana Kaboosaya
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
| | - Kiti Siriwatana
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Keskanya Subbalekha
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Pornchai Jansisyanont
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Atiphan Pimkhaokham
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
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Li DTS, Wang R, Wong NSM, Leung YY. Postoperative stability of two common ramus osteotomy procedures for the correction of mandibular prognathism: A randomized controlled trial. J Craniomaxillofac Surg 2021; 50:32-39. [PMID: 34627665 DOI: 10.1016/j.jcms.2021.09.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 09/23/2021] [Accepted: 09/30/2021] [Indexed: 01/18/2023] Open
Abstract
The aim of this randomized controlled trial was to compare the skeletal stability between sagittal split ramus osteotomy (SSRO) and intraoral vertical ramus osteotomy (IVRO) in the treatment of mandibular prognathism. Patients presenting with mandibular prognathism and scheduled for orthognathic surgery were randomized into either the SSRO group or the IVRO group. Changes at B-point were assessed by serial tracing of lateral cephalograms, which were taken preoperatively, and at 2 weeks, 6 months, 1 year, and 2 years postoperatively. Ninety-eight patients were recruited, with 49 patients in each group. Between 2 weeks and 6 months postoperatively, there was significantly more surgical relapse in the horizontal direction (anterior movement) in the SSRO group when compared with the IVRO group (1.83 mm (SD 2.91 mm) vs 0.49 mm (SD 2.32 mm); p = 0.019). At 2 years, there was more surgical relapse in the horizontal direction in the SSRO group than in the IVRO group (0.27 mm (SD 0.34 mm) vs 0.10 mm (SD 0.29 mm); p = 0.014). There were also more absolute changes (irrespective of direction) at B-point in the SSRO group than in the IVRO group at postoperative 6 months, 1 year, and 2 years (p = 0.016, 0.049, and 0.045, respectively). The amounts of change at B-point as percentages of total mandibular setback were 1.3% and 3.5% in the IVRO group and SSRO group, respectively. There were no differences in vertical changes between the two groups at any time points. In conclusion, the horizontal stability at B-point was shown to be superior in the IVRO group compared with the SSRO group in the correction of mandibular prognathism during the 2-year follow-up. Although the exact clinical importance of this difference is unknown at this time, this possible benefit may be an important key factor when deciding which osteotomy technique to employ for mandibular setback.
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Affiliation(s)
- Dion Tik Shun Li
- Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Hong Kong, Hong Kong
| | - Rui Wang
- Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Hong Kong, Hong Kong
| | - Natalie Sui Miu Wong
- Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Hong Kong, Hong Kong
| | - Yiu Yan Leung
- Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Hong Kong, Hong Kong.
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Tashkandi N, Alshanbari S, Almutairi N, Al Hawsawi A, Abuabah A, Alanazi A. Prevalence and characteristics of mandibular divergency in class III patients. SAUDI JOURNAL OF ORAL SCIENCES 2021. [DOI: 10.4103/sjoralsci.sjoralsci_46_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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Ohba S, Tominaga J, Koga T, Miura KI, Yoshida N, Asahina I. Movement of the proximal segment after intraoral vertical ramus osteotomy versus short lingual osteotomy with physiological positioning strategy. J Craniomaxillofac Surg 2020; 48:638-644. [PMID: 32439368 DOI: 10.1016/j.jcms.2020.04.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 04/04/2020] [Accepted: 04/17/2020] [Indexed: 12/01/2022] Open
Abstract
PURPOSE To clarify whether intraoral vertical ramus osteotomy (IVRO) or short lingual osteotomy (SLO) induces less proximal segmental movement after surgery without bone fixation. METHODS This study included patients who underwent IVRO or SLO without bone fixation. Cephalograms were taken before surgery (T1), immediately after surgery (T2), and >6 months after surgery (T3) to assess postoperative movement of the proximal segment and skeletal stability. The condylar angle was measured using computed tomography images taken at T1 and T3 to assess rotation. RESULTS Ninety patients were included (IVRO, n = 25; SLO, n = 65). The proximal segment swung laterally on the frontal cephalogram in the asymmetrical IVRO group at T3. The condylar head was rotated outwardly 6.52 ± 4.49° (p < 0.0001) in the symmetrical IVRO group and 8.06 ± 6.88° (p = 0.030) on the non-deviated side in the asymmetrical IVRO group at T3. The condyles were almost stable in the SLO group. Temporomandibular joint disorders were found in 2 of 22 IVRO patients and in 2 of 42 SLO patients with asymmetry at T3. CONCLUSION This study suggests that SLO with the physiological positioning strategy (PPS) should be preferred over IVRO with the PPS whenever possible.
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Affiliation(s)
- Seigo Ohba
- Department of Regenerative Oral Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588 Japan.
| | - Junya Tominaga
- Department of Orthodontics and Dentofacial Orthopedics, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588 Japan
| | - Takamitsu Koga
- Department of Regenerative Oral Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588 Japan
| | - Kei-Ichiro Miura
- Department of Regenerative Oral Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588 Japan
| | - Noriaki Yoshida
- Department of Orthodontics and Dentofacial Orthopedics, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588 Japan
| | - Izumi Asahina
- Department of Regenerative Oral Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588 Japan
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Vilas R, Ceballos FC, Al-Soufi L, González-García R, Moreno C, Moreno M, Villanueva L, Ruiz L, Mateos J, González D, Ruiz J, Cinza A, Monje F, Álvarez G. Is the "Habsburg jaw" related to inbreeding? Ann Hum Biol 2019; 46:553-561. [PMID: 31786955 DOI: 10.1080/03014460.2019.1687752] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Background: The "Habsburg jaw" has long been associated with inbreeding due to the high prevalence of consanguineous marriages in the Habsburg dynasty. However, it is thought that mandibular prognathism (MP) is under the influence of a dominant major gene.Aim: To investigate the relationship between the "Habsburg jaw" and the pedigree-based inbreeding coefficient (F) as a relative measure of genome homozygosity.Subjects and methods: The degree of MP and maxillary deficiency (MD) of 15 members of the Habsburg dynasty was quantified through the clinical analysis of 18 dysmorphic features diagnosed from 66 portraits.Results: A statistically significant correlation (r = 0.711, p = 0.003) between MP and MD was observed among individuals. Only MP showed a statistically significant positive regression on F as evidenced from univariate analysis (b = 6.36 ± 3.34, p = 0.040) and multivariate analysis (PCA) performed from single dysmorphic features (b = 14.10 ± 6.62, p = 0.027, for the first PC).Conclusion: Both MP and MD are generally involved in the "Habsburg jaw." The results showed a greater sensitivity to inbreeding for the lower third of the face and suggest a positive association between the "Habsburg jaw" and homozygosity and therefore a basically recessive inheritance pattern.
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Affiliation(s)
- Román Vilas
- Department of Zoology, Genetics and Physical Anthropology, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Francisco C Ceballos
- Sydney Brenner Institute for Molecular Bioscience, University of the Witwatersrand, Johannesburg, South Africa
| | - Laila Al-Soufi
- Department of Zoology, Genetics and Physical Anthropology, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Raúl González-García
- Department of Oral and Maxillofacial Surgery, University Hospital Infanta Cristina, Badajoz, Spain
| | - Carlos Moreno
- Department of Oral and Maxillofacial Surgery, University Hospital Infanta Cristina, Badajoz, Spain
| | - Manuel Moreno
- Department of Oral and Maxillofacial Surgery, University Hospital Infanta Cristina, Badajoz, Spain
| | - Laura Villanueva
- Department of Oral and Maxillofacial Surgery, University Hospital Infanta Cristina, Badajoz, Spain
| | - Luis Ruiz
- Department of Oral and Maxillofacial Surgery, University Hospital Infanta Cristina, Badajoz, Spain
| | - Jesús Mateos
- Department of Oral and Maxillofacial Surgery, University Hospital Infanta Cristina, Badajoz, Spain
| | - David González
- Department of Oral and Maxillofacial Surgery, University Hospital Infanta Cristina, Badajoz, Spain
| | - Jennifer Ruiz
- Department of Oral and Maxillofacial Surgery, University Hospital Infanta Cristina, Badajoz, Spain
| | - Aitor Cinza
- Department of Oral and Maxillofacial Surgery, University Hospital Infanta Cristina, Badajoz, Spain
| | - Florencio Monje
- Department of Oral and Maxillofacial Surgery, University Hospital Infanta Cristina, Badajoz, Spain
| | - Gonzalo Álvarez
- Department of Zoology, Genetics and Physical Anthropology, University of Santiago de Compostela, Santiago de Compostela, Spain
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Simultaneous Surgical Correction of Skeletal Class III Dentofacial Deformity During Acute Management of Facial Fractures. Ann Plast Surg 2019; 83:e20-e27. [DOI: 10.1097/sap.0000000000002037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ni J, Song S, Zhou N. Impact of surgical orthodontic treatment on quality of life in Chinese young adults with class III malocclusion: a longitudinal study. BMC Oral Health 2019; 19:109. [PMID: 31196054 PMCID: PMC6567538 DOI: 10.1186/s12903-019-0782-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 05/08/2019] [Indexed: 11/12/2022] Open
Abstract
Background The quality of life in Class III malocclusion patients are worse than those without the disorder and previous studies have shown that surgical orthodontic treatment has a different effect on these patients compared with mild or moderate malocclusion. This study aimed to investigate the changes in quality of life in patients with Class III malocclusion during surgical orthodontic treatment in Chinese young adults. Methods The 14-item Short Form Oral Health Impact Profile (OHIP-14), and the 22-item Orthognathic Quality of Life Questionnaire (OQLQ) were used to assess the effect of surgical orthodontic treatment on the quality of life in 21 patients with Class III malocclusion at pre-treatment (T0), pre-surgical orthodontic treatment (6 to 8 months, T1) and post-surgical orthodontic treatment (6 to 8 months after surgery, T2), and 24 healthy individuals were included as controls. The comparisons in numerical variables between patients and controls were performed using Mann-Whitney U test. The scores of the two questionnaires between T0, T1, T2 and controls (Tc) were compared using generalized estimating equation. Results According to OHIP-14 questionnaire, the mean scores in T0 and T1 were higher than those in T2 and Tc (P < 0.001), and a significant decrease was observed after post-surgical orthodontic treatment (P < 0.001), which achieved a level similar to the control group (P > 0.05). As to OQLQ questionnaire, the mean scores of all domains showed a significant increase between T0 and T1 except for awareness of dentofacial aesthetics (P > 0.05) and social aspects of dentofacial deformity (P > 0.05), followed by a significant decrease between T1 and T2. Conclusion Surgical orthodontic treatment may improve quality of life in patients with Class III malocclusion, but pre-surgical orthodontic treatment may have an adverse effect on quality of life.
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Affiliation(s)
- Jiaan Ni
- Orthognathic Centre, College of Stomatology, GuangXi Medical University, Nanning, 530021, People's Republic of China
| | - Shaohua Song
- Orthognathic Centre, College of Stomatology, GuangXi Medical University, Nanning, 530021, People's Republic of China
| | - Nuo Zhou
- Orthognathic Centre, College of Stomatology, GuangXi Medical University, Nanning, 530021, People's Republic of China. .,Department of Oral and Maxillofacial Surgery, College of Stomatology, GuangXi Medical University, Nanning, 530021, People's Republic of China.
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Farolch-Prats L, Nome-Chamorro C. Facial Contouring by Using Dermal Fillers and Botulinum Toxin A: A Practical Approach. Aesthetic Plast Surg 2019; 43:793-802. [PMID: 30953112 PMCID: PMC6522458 DOI: 10.1007/s00266-019-01361-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 02/22/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND The perception of an attractive face is largely subjective. The purpose of this paper is to provide an insight and a practical approach to facial contouring management with hyaluronic acid (HA) implants and botulinum toxin A. METHODS This study is presenting the clinical experience of the authors regarding facial contouring. After a careful medical history, patients underwent an exhaustive aesthetic assessment that includes photographs and videos. Realistic treatment goals were discussed and agreed with the patient. Comprehensive treatment strategies for facial contouring, including HA implants and/or botulinum toxin A injections, were selected according to the patient needs. RESULTS Based on the MD codes®, developed by Mauricio de Maio, these treatment strategies have been adapted to six different basic categories of facial shapes, namely round, square, triangular, inverted triangle, rectangle, oval and oblong faces. The incidence of complications was low and, in all the cases, was mild (edema, erythema and local ecchymosis), of limited duration, and was resolved without sequela. CONCLUSIONS The current article presented the personal experiences of the authors on a specific subject, and this fact should be considered when interpreting data from this paper. As other aesthetic treatments, facial contouring should be focused on the patient needs and to select a specific aesthetic approach according to different facial shapes. Finally, it is essential to have a good understanding of the potential associated complications, because it will help the specialist to take the necessary precautions to prevent them, and if they ever arise, to be able to deal with them effectively. LEVEL OF EVIDENCE IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Lisandro Farolch-Prats
- Nu Clinic, Carretera de Cerdanyola, 79-81, 2do 3era, 08172, Sant Cugat del Vallès, Barcelona, Spain.
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Comparison of Pharyngeal Airway between Mandibular Setback Surgery Patients (Skeletal Class III) and Nonsurgery Patients (Skeletal Classes I and II). BIOMED RESEARCH INTERNATIONAL 2019; 2019:5012037. [PMID: 31008106 PMCID: PMC6441503 DOI: 10.1155/2019/5012037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/06/2019] [Accepted: 02/28/2019] [Indexed: 12/03/2022]
Abstract
Purpose We investigated the pharyngeal airway dimensions and their correlations in patients who underwent mandibular setback surgery versus those who did not. Materials and Methods One hundred and sixty cephalometric radiographs (120 patients) were obtained from patients with three skeletal malocclusion classifications: Class I and Class II in the nonsurgery group and Class III in the surgery group (preoperative and postoperative cephalograms). The following dimensions were measured: nasopharyngeal airway (NOP), uvulopharyngeal airway (UOP), shortest distance from the posterior tongue to the pharyngeal wall (TOP), and distance from the epiglottis to the pharyngeal wall (EOP). Paired t test, one-way analysis of variance, and Pearson correlation coefficients were used for statistical analysis. Results Preoperatively, UOP and TOP of skeletal Class III patients (15.2 mm and 16.6 mm) were significantly larger than those of skeletal Class II (11.5 mm and 12 mm) and Class II (12.3 mm and 12.9 mm) patients, respectively. No differences were observed in EOP between the three skeletal patterns. The hyoid bone of Class III patients was significantly anterior to that of Class I/II patients. Furthermore, UOP had a moderate negative correlation with soft palate length. Postoperatively, no significant difference (UOP, TOP, EOP, soft palate width, and hyoid bone) was found between the skeletal classes. Conclusion Preoperatively, UOP and TOP of skeletal Class III patients were significantly wider than those of skeletal Class I/II patients. Pre- and postoperatively, EOP did not exhibit significant differences among the three skeletal classifications. No differences were found in all postoperative pharyngeal airway dimensions between Class III patients and nonsurgery patients (Class I and Class II).
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Tseng YC, Chen HJ, Cheng JH, Chen PH, Pan CY, Chou ST, Chen CM. Appearance on face reading (cheek line) after orthognathic surgery. Br J Oral Maxillofac Surg 2018; 56:394-400. [DOI: 10.1016/j.bjoms.2018.03.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 03/18/2018] [Indexed: 10/17/2022]
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Johal A, Chaggar A, Zou LF. A three-dimensional soft tissue analysis of Class III malocclusion: a case-controlled cross-sectional study. J Orthod 2017; 45:16-22. [PMID: 28678642 DOI: 10.1080/14653125.2017.1331893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE The present study used the optical surface laser scanning technique to compare the facial features of patients aged 8-18 years presenting with Class I and Class III incisor relationship in a case-control design. MATERIALS AND METHODS Subjects with a Class III incisor relationship, aged 8-18 years, were age and gender matched with Class I control and underwent a 3-dimensional (3-D) optical surface scan of the facial soft tissues. RESULTS Landmark analysis revealed Class III subjects displayed greater mean dimensions compared to the control group most notably between the ages of 8-10 and 17-18 years in both males and females, in respect of antero-posterior (P = 0.01) and vertical (P = 0.006) facial dimensions. Surface-based analysis, revealed the greatest difference in the lower facial region, followed by the mid-face, whilst the upper face remained fairly consistent. CONCLUSION Significant detectable differences were found in the surface facial features of developing Class III subjects.
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Affiliation(s)
- Ama Johal
- a Institute of Dentistry, Bart's and The London School of Medicine and Dentistry , Queen Mary University of London , UK
| | - Amrit Chaggar
- a Institute of Dentistry, Bart's and The London School of Medicine and Dentistry , Queen Mary University of London , UK
| | - Li Fong Zou
- a Institute of Dentistry, Bart's and The London School of Medicine and Dentistry , Queen Mary University of London , UK
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19
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Kim YK. Complications associated with orthognathic surgery. J Korean Assoc Oral Maxillofac Surg 2017; 43:3-15. [PMID: 28280704 PMCID: PMC5342970 DOI: 10.5125/jkaoms.2017.43.1.3] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 02/09/2017] [Indexed: 11/21/2022] Open
Abstract
While most patients undergo orthognathic surgery for aesthetic purposes, aesthetic improvements are most often followed by postoperative functional complications. Therefore, patients must carefully decide whether their purpose of undergoing orthognathic surgery lies on the aesthetic side or the functional side. There is a wide variety of complications associated with orthognathic surgery. There should be a clear distinction between malpractice and complications. Complications can be resolved without any serious problems if the cause is detected early and adequate treatment provided. Oral and maxillofacial surgeons must have a full understanding of the types, causes, and treatment of complications, and should deliver this information to patients who develop these complications.
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Affiliation(s)
- Young-Kyun Kim
- Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea
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20
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Classification and characterization of class III malocclusion in Chinese individuals. Head Face Med 2016; 12:31. [PMID: 27821165 PMCID: PMC5100215 DOI: 10.1186/s13005-016-0127-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 10/26/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Class III malocclusion is a maxillofacial disorder that is characterised by a concave profile and can be attributed to both genetic inheritance and environmental factors. It is a clinical challenge due to our limited understanding of its aetiology. Revealing its prototypical diversity will contribute to our sequential exploration of the underlying aetiological information. The objective of this study was to characterize phenotypic variations of Class III malocclusion via a lateral cephalometric analysis in a community of Chinese individuals. METHOD One-hundred-and-forty-four individuals (58 males ≥18 and 86 females ≥16) with Class III malocclusion ranging from mild to severe were enrolled in this study. Principal component analysis and cluster analysis were performed using 61 lateral cephalometric measurements. RESULTS Six principal components were discovered in the examined population and were responsible for 73.7 % of the variability. Four subtypes were revealed by cluster analysis. Subtype 1 included subjects with mild mandibular prognathism with a steep mandibular plane. Subjects in subtype 2 showed a combination of prognathic mandibular and retrusive maxillary with a flat or normal mandibular plane. Subtype 3 included individuals with purely severe mandibular prognathism and a normal mandibular plane. Individuals in subtype 4 had a mild maxillary deficiency and severe mandibular prognathism with the lowest mandibular plane angle. CONCLUSION The six principal components extracted among the 61 variables improve our knowledge of lateral cephalometric analysis for diagnoses. We successfully identified four Class III malocclusion subtypes, indicating that cluster analysis could supplement the classification of Class III malocclusion among a Chinese population and may assist in our on-going genetic study.
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MicroRNA expression profile of surgical removed mandibular bone tissues from patients with mandibular prognathism. J Surg Res 2015; 198:127-34. [DOI: 10.1016/j.jss.2015.04.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 01/20/2015] [Accepted: 04/21/2015] [Indexed: 12/25/2022]
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Ruslin M, Forouzanfar T, Astuti IA, Soemantri ES, Tuinzing DB. The epidemiology, treatment, and complication of dentofacial deformities in an Indonesian population: A 21-year analysis. JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY, MEDICINE, AND PATHOLOGY 2015. [DOI: 10.1016/j.ajoms.2014.09.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Determining the location of the internal maxillary artery on ultrasonography and unenhanced magnetic resonance imaging before orthognathic surgery. Int J Oral Maxillofac Surg 2015; 44:977-83. [DOI: 10.1016/j.ijom.2015.04.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 02/17/2015] [Accepted: 04/16/2015] [Indexed: 11/17/2022]
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Guan X, Song Y, Ott J, Zhang Y, Li C, Xin T, Li Z, Gan Y, Li J, Zhou S, Zhou Y. The ADAMTS1 Gene Is Associated with Familial Mandibular Prognathism. J Dent Res 2015; 94:1196-201. [PMID: 26124221 DOI: 10.1177/0022034515589957] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Mandibular prognathism is a facial skeletal malocclusion. Until now, the genetic mechanism has been unclear. The goal of this study was to identify candidate genes or genomic regions directly associated with mandibular prognathism development, by employing whole genome sequencing. A large Chinese family was recruited, composed of 9 affected and 12 unaffected individuals, and the inheritance pattern of this family tends to be autosomal dominant. A single-nucleotide missense mutation in the ADAMTS1 gene (c. 742I>T) was found to segregate in the family, given that the affected individuals must be heterozygous for the mutation. For mutation validation, we screened this candidate mutation and 15 tag single-nucleotide polymorphisms in the coding sequence of ADAMTS1 among 230 unrelated cases and 196 unrelated controls using Sequenom Massarray and found that 3 in 230 cases carried this mutation and none of the controls did. Final results suggested that 2 single-nucleotide polymorphisms (rs2738, rs229038) of ADAMTS1 were significantly associated with mandibular prognathism.
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Affiliation(s)
- X Guan
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - Y Song
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - J Ott
- Department of Laboratory of Statistical Genetics, Institute of Psychology, Chinese Academy of Sciences, Beijing, P.R. China, and Rockefeller University, New York, NY, USA
| | - Y Zhang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - C Li
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - T Xin
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - Z Li
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology. Beijing, P.R. China
| | - Y Gan
- Department of Laboratory of Molecular Biology and Center for TMD and Orofacial Pain, Peking University School and Hospital of Stomatology. Beijing, P.R. China
| | - J Li
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - S Zhou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - Y Zhou
- Department of Orthodontics, Center for Craniofacial Stem Cell Research, Regeneration, and Translational Medicine, Peking University School and Hospital of Stomatology, Beijing, P.R. China
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Chen F, Li Q, Gu M, Li X, Yu J, Zhang YB. Identification of a Mutation in FGF23 Involved in Mandibular Prognathism. Sci Rep 2015; 5:11250. [PMID: 26059428 PMCID: PMC4462018 DOI: 10.1038/srep11250] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Accepted: 05/18/2015] [Indexed: 12/30/2022] Open
Abstract
Mandibular prognathism (MP) is a severe maxillofacial disorder with undetermined genetic background. We collected a Chinese pedigree with MP which involved in 23 living members of 4 generations. Genome-wide linkage analysis were carried out to obtain the information in this family and a new MP-susceptibility locus, 12pter-p12.3 was identified. Whole-exome sequencing identified a novel heterozygous mutation in fibroblast growth factor (FGF) 23 (; p.A12D) which well segregated with MP in this pedigree within the locus. The mutation was also detected in 3 cases out of 65 sporadic MP patients, but not in any of the 342 control subjects. The p.A12D mutation may disrupt signal peptide function and inhibit secretory in FGF23. Furthermore, mutant FGF23 was overexpressed in 293T cells, increased cytoplasmic accumulation was observed compared with the wild type. We have discovered that c.35C>A mutation in FGF23 strongly associated with MP, which expand our understanding of the genetic contribution to MP pathogenesis.
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Affiliation(s)
- Fengshan Chen
- Laboratory of Oral Biomedical Science and Translational Medicine, School and Hospital of Stomatology, Tongji University, Shanghai, P. R. China
| | - Qin Li
- Laboratory of Oral Biomedical Science and Translational Medicine, School and Hospital of Stomatology, Tongji University, Shanghai, P. R. China
| | - Mingliang Gu
- Beijing Institute of Genomics, Chinese Academy of Sciences and Key Laboratory of GenomeScience and Information, Chinese Academy of Sciences, Beijing, P. R. China
| | - Xin Li
- Department of Cardiology, Beijing Anzhen Hospital of the Capital University of Medical Sciences, Beijing, P. R. China
| | - Jun Yu
- Beijing Institute of Genomics, Chinese Academy of Sciences and Key Laboratory of GenomeScience and Information, Chinese Academy of Sciences, Beijing, P. R. China
| | - Yong-Biao Zhang
- Beijing Institute of Genomics, Chinese Academy of Sciences and Key Laboratory of GenomeScience and Information, Chinese Academy of Sciences, Beijing, P. R. China
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Worasakwutiphong S, Chuang YF, Chang HW, Lin HH, Lin PJ, Lo LJ. Nasal changes after orthognathic surgery for patients with prognathism and Class III malocclusion: analysis using three-dimensional photogrammetry. J Formos Med Assoc 2014; 114:112-23. [PMID: 25534453 DOI: 10.1016/j.jfma.2014.10.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 09/03/2014] [Accepted: 10/09/2014] [Indexed: 10/24/2022] Open
Abstract
BACKGROUND/PURPOSE Orthognathic surgery alters the position of maxilla and mandible, and consequently changes the nasal shape. The nasal change remains a concern to Asian patients. The aim of this study was to measure the nasal changes using a novel three-dimensional photographic imaging method. METHODS A total of 38 patients with Class III malocclusion and prognathism were enrolled. All patients underwent two-jaw surgery with the standard technique. A nasal alar cinching suture was included at the end of procedure. Facial landmarks and nasal morphology were defined and measured from pre- and postoperative three-dimensional photographic images. Intra-rater errors on landmark identification were controlled. Patient's reports of perceptual nasal changes were recorded. RESULTS The average width of the alar base and subalare remained similar after surgery. Alar width was increased by 0.74 mm. Nasal height and length remained the same. Nasolabial angle increased significantly. The area of nostril show revealed a significant increase and was correlated with a decrease of columella inclination. Nasal tip projection decreased significantly, by 1.99 mm. Preoperative nasal morphology was different between patients with and without cleft lip/palate, but most nasal changes were concordant. In the self-perception, 37% of patients reported improved nasal appearance, 58% reported no change, and 5% were not satisfied with the nasal changes. CONCLUSION After the surgery, characteristic nasal changes occurred with an increase of nasolabial angle and nostril show, but a preserved nasal width. The majority of patients did not perceive adverse nasal changes.
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Affiliation(s)
- Saran Worasakwutiphong
- Craniofacial Center, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ya-Fang Chuang
- Craniofacial Research Center, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Hsin-Wen Chang
- Craniofacial Research Center, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Hsiu-Hsia Lin
- Craniofacial Research Center, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Pei-Ju Lin
- Craniofacial Research Center, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Lun-Jou Lo
- Craniofacial Research Center, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan; Department of Plastic and Reconstructive Surgery, Craniofacial Center, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan.
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Bayram S, Basciftci FA, Kurar E. Relationship between P561T and C422F polymorphisms in growth hormone receptor gene and mandibular prognathism. Angle Orthod 2014; 84:803-9. [PMID: 24654940 PMCID: PMC8641272 DOI: 10.2319/091713-680.1] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Accepted: 01/01/2014] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To evaluate the allele and genotype frequencies of the P561T and C422F polymorphic sites of the growth hormone receptor (GHR) gene and the relationship between mandibular prognathism (MP) and these two single-nucleotide polymorphisms (SNPs). MATERIALS AND METHODS A total of 99 subjects with severe skeletal Class III MP who planned to undergo orthognathic surgery and 99 subjects with Class I occlusion were examined in this study to evaluate the relationship between MP and two SNPs in exon 10 of the GHR gene. GHR was chosen as a candidate gene because growth hormone plays an important role in cartilage growth. A blood sample was used to extract genomic DNA, and the polymerase chain reaction-restriction fragment length polymorphism method was used to determine genotypes of P561T and C422F. The Minitab 14.0 packet program was used to perform statistical analysis. RESULTS Allele frequencies of the C422F and P561T variants were determined. Because of the low allele frequency of the control group, statistical analysis could not be performed to test the difference between MP and control groups. Therefore, the data were combined to determine the association between the P561T polymorphism and craniofacial measurements. Effective mandibular length (condylion-gnathion) and lower face height (anterior nasal spina-menton) were associated with the P561T variant. CONCLUSION This finding supports that the GHR might be a candidate gene for mandibular morphogenesis in this population.
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Affiliation(s)
- Sinem Bayram
- Postgraduate student, Department of Orthodontics, Faculty of Dentistry, Selcuk University, Konya, Turkey
| | - Faruk Ayhan Basciftci
- Professor and Chair, Department of Orthodontics, Faculty of Dentistry, Selcuk University, Konya, Turkey
| | - Ercan Kurar
- Associate Professor, Department of Genetics, Faculty of Veterinary Medicine, Selcuk University, Konya, Turkey
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Chen S, Cai Y, Chen F. Lip closing force of Class III patients with mandibular prognathism: a case control study. Head Face Med 2014; 10:33. [PMID: 25159036 PMCID: PMC4160137 DOI: 10.1186/1746-160x-10-33] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Accepted: 08/22/2014] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION To compare the lip closing force of patients with mandibular prognathism to that of patients without dentofacial anomalies. METHODS The subject group included 62 female patients of Class III relationship with mandibular prognathism. The control group been comprised of 71 patients of Class I relationships without skeletal deformities. Maximum lip closing force and average lip closing force were measured using a Y-meter. Student's t-test was carried out to analyse the differences between the groups. Correlation and stepwise multiple linear regression analyses were performed to analyse the relationship between lip closing force and craniofacial morphology. RESULTS The lower lip closing force of subjects with mandibular prognathism was significantly greater than that of patients in the control group (P < 0.001), while the upper lip closing force showed no difference (P > 0.05). The lower lip closing force of patients with mandibular prognathism was strongly correlated with IMPA (Lower Incisor - Mandibular Plane angle, P < 0.001) and FMA (Frankfort Plane-Mandibular Plane angle, P < 0.001). Multiple regression equations: (MaxLL) = 12.192 - 0.125 * (IMPA) + 0.082 (FMA); (AveLL) = 9.112 - 0.091 * (IMPA) + 0.054 (FMA). CONCLUSIONS The lower lip closing force was markedly increased in Class III patients with mandibular prognathism and was strongly correlated with lower incisor position and mandibular plane angle.
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Affiliation(s)
- Sihui Chen
- Department of Orthodontics, Laboratory of Oral Biomedical Science and Translational Medicine, School of Stomatology, Tongji University, Middle Yanchang Road 399, Shanghai, P. R. China
| | - Ying Cai
- Department of Orthodontics, Laboratory of Oral Biomedical Science and Translational Medicine, School of Stomatology, Tongji University, Middle Yanchang Road 399, Shanghai, P. R. China
| | - Fengshan Chen
- Department of Orthodontics, Laboratory of Oral Biomedical Science and Translational Medicine, School of Stomatology, Tongji University, Middle Yanchang Road 399, Shanghai, P. R. China
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Desh H, Gray SL, Horton MJ, Raoul G, Rowlerson AM, Ferri J, Vieira AR, Sciote JJ. Molecular motor MYO1C, acetyltransferase KAT6B and osteogenetic transcription factor RUNX2 expression in human masseter muscle contributes to development of malocclusion. Arch Oral Biol 2014; 59:601-7. [PMID: 24698832 DOI: 10.1016/j.archoralbio.2014.03.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 12/20/2013] [Accepted: 03/12/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVE Type I myosins are molecular motors necessary for glucose transport in the cytoplasm and initiation of transcription in the nucleus. Two of these, MYO1H and MYO1C, are paralogs which may be important in the development of malocclusion. The objective of this study was to investigate their gene expression in the masseter muscle of malocclusion subjects. Two functionally related proteins known to contribute to malocclusion were also investigated: KAT6B (a chromatin remodelling epigenetic enzyme which is activated by MYO1C) and RUNX2 (a transcription factor regulating osteogenesis which is activated by KAT6B). DESIGN Masseter muscle samples and malocclusion classifications were obtained from orthognathic surgery subjects. Muscle was sectioned and immunostained to determine fibre type properties. RNA was isolated from the remaining sample to determine expression levels for the four genes by TaqMan(®) RT-PCR. Fibre type properties, gene expression quantities and malocclusion classification were compared. RESULTS There were very significant associations (P<0.0000001) between MYO1C and KAT6B expressions. There were also significant associations (P<0.005) between RUNX2 expression and masseter muscle type II fibre properties. Very few significant associations were identified between MYO1C and masseter muscle fibre type properties. CONCLUSIONS The relationship between MYO1C and KAT6B suggests that the two are interacting in chromatin remodelling for gene expression. This is the nuclear myosin1 (NM1) function of MYO1C. A surprising finding is the relationship between RUNX2 and type II masseter muscle fibres, since RUNX2 expression in mature muscle was previously unknown. Further investigations are necessary to elucidate the role of RUNX2 in adult masseter muscle.
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Affiliation(s)
- Heather Desh
- Orthodontic Private Practice,1649 Bluebird Canyon Drive, Laguna Beach, CA, United States
| | - S Lauren Gray
- Orthodontic Department, Temple University, 3223 North Broad Street, Philadelphia, PA, United States
| | - Michael J Horton
- Orthodontic Department, Temple University, 3223 North Broad Street, Philadelphia, PA, United States
| | - Gwenael Raoul
- Oral and Maxillofacial Surgery, Université Lille Nord de France, UDSL, Roger Salengro Hospital, CHU, and INSERM U 1008, Controlled Drug Delivery Systems and Biomaterials, Lille, France
| | - Anthea M Rowlerson
- Centre of Human and Aerospace Physiological Sciences, King's College London, London, UK
| | - Joel Ferri
- Oral and Maxillofacial Surgery, Université Lille Nord de France, UDSL, Roger Salengro Hospital, CHU, and INSERM U 1008, Controlled Drug Delivery Systems and Biomaterials, Lille, France
| | - Alexandre R Vieira
- Department of Oral Biology, School of Dental Medicine, University of Pittsburgh, 3501 Terrace Street, Pittsburgh, PA, United States
| | - James J Sciote
- Orthodontic Department, Temple University, 3223 North Broad Street, Philadelphia, PA, United States.
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Halvorsen ET, Beddari IY, Schilbred Eriksen E, Boe OE, Wisth PJ, Loes S, Moen K. Relapse and stability after mandibular setback surgery one year postoperatively: a retrospective study. J Oral Maxillofac Surg 2014; 72:1181.e1-11. [PMID: 24831939 DOI: 10.1016/j.joms.2014.02.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 02/17/2014] [Accepted: 02/18/2014] [Indexed: 11/15/2022]
Abstract
PURPOSE A retrospective evaluation was performed of dentoalveolar and skeletal stability 1 year after mandibular setback surgery using intraoral vertical subcondylar osteotomy (IVSO) combined with intermaxillary fixation. PATIENTS AND METHODS Twenty-eight patients (16 men, 12 women) with skeletal Angle Class III malocclusions were included. Mean age at start of treatment was 23.9 years. All patients underwent combined surgical and orthodontic treatment. Dental casts and cephalometric measurements were performed for each patient before orthodontic treatment and at 8 weeks and 1 year after surgery. RESULTS Treatment changes from 8 weeks to 1 year after surgery were small but significant for the angular relationship between the maxilla and the mandible in the sagittal plane (ANB) (mean difference, -0.5 mm; P = .021), Wits appraisal (mean difference, -0.7 mm; P = .044), the inclination of the mandible in relation to the nasion-sella line (ML-NSL) (mean difference, -0.8 mm; P = .010), and the inclination of the lower incisors in relation to the nasion-point B line (Li-NB) (mean difference, -0.6 mm; P < .001). These findings for cephalometric values indicated a small skeletal relapse in sagittal and vertical relations. No significant dentoalveolar relapse occurred according to the dental cast evaluations. CONCLUSION The results clearly show that orthodontic treatment combined with IVSO provides a stable dental and skeletal result 1 year after treatment.
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Affiliation(s)
- Eirik Torjuul Halvorsen
- Consultant Orthodontist, Section for Orthodontics, Department of Clinical Dentistry, University of Bergen, Bergen, Norway
| | - Ingri Yddal Beddari
- Consultant Orthodontist, Section for Orthodontics, Department of Clinical Dentistry, University of Bergen, Bergen, Norway
| | - Elisabeth Schilbred Eriksen
- Resident Orthodontist, Section for Orthodontics, Department of Clinical Dentistry, University of Bergen, Bergen, Norway.
| | - Olav Egil Boe
- Associate Professor, Department of Clinical Dentistry, University of Bergen, Bergen, Norway
| | - Per Johan Wisth
- Professor Emeritus, Section for Orthodontics, Department of Clinical Dentistry, University of Bergen, Bergen, Norway
| | - Sigbjorn Loes
- Associate Professor and Consulting Oral and Maxillofacial Surgeon, Department of Maxillofacial Surgery, Haukeland University Hospital, Bergen, Norway
| | - Ketil Moen
- Consultant Oral and Maxillofacial Surgeon, Section for Oral and Maxillofacial Surgery, Department of Clinical Dentistry, University of Bergen, Bergen, Norway
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Pan CY, Lan TH, Chou ST, Tseng YC, Chang JZC, Chang HP. Orthodontic treatment for a mandibular prognathic girl of short stature under growth hormone therapy. J Formos Med Assoc 2013; 112:801-6. [DOI: 10.1016/j.jfma.2012.07.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Revised: 05/30/2010] [Accepted: 05/30/2010] [Indexed: 10/27/2022] Open
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Arimoto S, Hasegawa T, Kaneko K, Tateishi C, Furudoi S, Shibuya Y, Komori T. Observation of Osseous Healing After Intraoral Vertical Ramus Osteotomy: Focus on Computed Tomography Values. J Oral Maxillofac Surg 2013; 71:1602.e1-1602.e10. [PMID: 23611606 DOI: 10.1016/j.joms.2013.02.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 02/22/2013] [Accepted: 02/27/2013] [Indexed: 10/26/2022]
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Yang HJ, Hwang SJ. Contributing factors to intraoperative clockwise rotation of the proximal segment as a relapse factor after mandibular setback with sagittal split ramus osteotomy. J Craniomaxillofac Surg 2013; 42:e57-63. [PMID: 23830770 DOI: 10.1016/j.jcms.2013.05.034] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 05/21/2013] [Accepted: 05/21/2013] [Indexed: 11/28/2022] Open
Abstract
The aims of this study were to analyze possible contributing factors to intraoperative clockwise rotation (CWR) of the proximal segment (PS), which is known to be a primary factor for relapse after mandibular setback with sagittal split ramus osteotomy (SSRO) and to evaluate the correlation between the CWR of the PS and relapse tendency. The sample was comprised of 47 patients who underwent SSRO for mandibular setback. Lateral cephalograms were analyzed. The vertical difference between the inferior borders of the PS and the distal segment at the vertical osteotomy line for SSRO after setback of the distal segment (vertical bony step, VBS) was the most predictable factor for CWR of the PS (p < 0.001), and it correlated significantly with the gonial angle, the surgical change in SNB, and the downward movement of the maxilla (p < 0.05). Patients with large CWR of the PS showed a greater tendency in horizontal relapse than patients with small CWR of the PS (p < 0.05). Such relapse patterns could be prevented with adequate surgical planning designed to reduce the VBS, such as maxillary posterior impaction or the intentional guidance of the PS to maintain the original position of the PS without CWR.
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Affiliation(s)
- Hoon Joo Yang
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - Soon Jung Hwang
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Republic of Korea.
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Rodrigues JB, Araújo S, Guedes-Pinto H, San Roman F, Viegas C, Bastos E. Analysis of new Matrilin-1 gene variants in a case-control study related to dental malocclusions in Equus asinus. Gene 2013; 522:70-4. [PMID: 23558247 DOI: 10.1016/j.gene.2013.03.084] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 02/08/2013] [Accepted: 03/15/2013] [Indexed: 10/27/2022]
Abstract
Prognathism and brachygnathism are craniofacial deformities that severely affect the health of human and vertebrates, such as donkeys. The multifactorial etiology of this disease makes the genetic analysis a powerful tool for its understanding and prevention of spreading these deformities. This study aims to contribute to the characterization of the genetic basis of prognathism and brachygnathism in donkeys, using the Zamorano-Leonés donkey, an endangered Spanish breed, as a model. Matrilin-1 (MATN1) polymorphisms have been previously described as markers for mandibular prognathism in Korean and Japanese human populations. Genetic variations in MATN1 gene were sought, in order to verify its association in a case-control study, including 30 donkeys presenting brachygnathism, 30 donkeys presenting prognathism and 30 donkeys with normal occlusion phenotypes. One genetic variation (g503G > A) located in an intronic region of MATN1 gene was identified and characterized. Statistically significant differences were detected between the control group and prognathism cases, but no statistical significant results were found between the control group and the brachygnathism cases. These results support evidence for an important role of MATN1 on prognathism in the analyzed population with MATN1 genetic variation - 503G>A - having a protective effect. Further studies should be developed in order to understand the whole role of MATN1 and the mechanisms affected by its genetic variations.
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Affiliation(s)
- João B Rodrigues
- Department of Veterinary Sciences, University of Trás-os-Montes e Alto Douro, Quinta de Prados, P.O. Box 1013, 5001-801 Vila Real, Portugal.
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Yoshioka I, Tanaka T, Habu M, Oda M, Kodama M, Kokuryo S, Kito S, Wakasugi-Sato N, Matsumoto-Takeda S, Seta Y, Fukudome Y, Tominaga K, Sakoda S, Morimoto Y. Criteria and limitations for selecting a sagittal split ramus osteotomy for patients with skeletal mandibular prognathism and open bite. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 115:455-65. [DOI: 10.1016/j.oooo.2012.06.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 05/25/2012] [Accepted: 06/07/2012] [Indexed: 11/15/2022]
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Gu Y, Zhang Y, Zhao C, Pan Y, Smales RJ, Wang H, Ni Y, Zhang H, Ni J, Ma J, Wang L. Serum microRNAs as potential biomarkers of mandibular prognathism. Oral Dis 2013; 20:55-61. [PMID: 23465220 DOI: 10.1111/odi.12073] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 12/14/2012] [Accepted: 01/12/2013] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The aim of the study was to determine whether the expression levels of specific circulating serum microRNAs (miRNAs) are associated with mandibular prognathism (MP). METHODS Sixty subjects in the early permanent dentition stage and 23 in the mixed dentition stage with MP were identified. Sixty-eight normal control subjects in the early permanent dentition stage and 24 in the mixed dentition stage were recruited for comparison. According to the microarray-based expression profiling, four serum miRNAs (let-7i-3p, miR-595, miR-16-2-3p, and miR-367-5p) were validated. RESULTS In the MP groups, let-7i-3p was significantly over-expressed in subjects in the early permanent (P < 0.0005) and mixed (P < 0.001) dentitions, and miR-595 was significantly under-expressed (P < 0.004) in subjects in the early permanent (P < 0.004) and mixed (P < 0.0005) dentitions, compared with normal control groups. Multiple logistic regression analysis and receiver operating characteristic curve analysis revealed that let-7i-3p and miR-595 were able to significantly discriminate MP subjects from normal controls. CONCLUSION Let-7i-3p and miR-595 could be potential, non-invasive biomarkers for the accurate early detection and diagnosis of MP, which may result in improved clinical management.
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Affiliation(s)
- Y Gu
- Institute of Stomatology, College of Stomatology, Nanjing Medical University, Nanjing, China
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Ohba S, Tasaki H, Tobita T, Minamizato T, Kawasaki T, Motooka N, Watanabe E, Yoshida N, Asahina I. Assessment of skeletal stability of intraoral vertical ramus osteotomy with one-day maxillary-mandibular fixation followed by early jaw exercise. J Craniomaxillofac Surg 2013; 41:586-92. [PMID: 23347885 DOI: 10.1016/j.jcms.2012.11.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Revised: 11/20/2012] [Accepted: 11/20/2012] [Indexed: 10/27/2022] Open
Abstract
PURPOSE Intraoral vertical ramus osteotomy (IVRO) is an effective surgical technique for cases of mandibular setback, is simpler and has a lower incidence of mental paraesthesia when compared to sagittal split ramus osteotomy (SSRO). However, IVRO has a disadvantage in the prolonged duration of postoperative maxillary-mandibular fixation (MMF) required due to the absence of rigid bone fixation. To avoid an extended MMF period, we developed a postoperative management protocol for our IVRO patients, using jaw exercises with elastic bands starting on the second day after surgery. METHODS We evaluated the cephalometric skeletal and dental stabilities of 16 IVRO patients as they followed our protocol. RESULTS The stabilities were confirmed and were similar to those of previous reports. CONCLUSION One-day MMF and early initiation of jaw exercise after IVRO did not affect the jaw position stability. Moreover, our findings suggest that starting jaw exercise earlier after IVRO surgery is beneficial, as it allows patients to avoid a long period of rigid MMF so that they can resume their normal daily activities sooner.
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Affiliation(s)
- Seigo Ohba
- Department of Regenerative Oral Surgery, Nagasaki University, Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan; Division of Dental and Oral Surgery, Faculty of Medical Science, University of Fukui, 23-3 Shimoaizuki, Matsuoka, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan.
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Effect of bone quality and position of the inferior alveolar nerve canal in continuous, long-term, neurosensory disturbance after sagittal split ramus osteotomy. J Craniomaxillofac Surg 2012; 40:e178-83. [DOI: 10.1016/j.jcms.2011.09.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2011] [Revised: 08/31/2011] [Accepted: 09/07/2011] [Indexed: 11/24/2022] Open
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Correlation of mandibular bone quality with neurosensory disturbance after sagittal split ramus osteotomy. Br J Oral Maxillofac Surg 2011; 49:552-6. [DOI: 10.1016/j.bjoms.2010.09.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Accepted: 09/14/2010] [Indexed: 11/17/2022]
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Treatment of adult Class III malocclusions with orthodontic therapy or orthognathic surgery: receiver operating characteristic analysis. Am J Orthod Dentofacial Orthop 2011; 139:e485-93. [PMID: 21536190 DOI: 10.1016/j.ajodo.2010.12.014] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Revised: 09/01/2010] [Accepted: 12/01/2010] [Indexed: 11/22/2022]
Abstract
INTRODUCTION The aim of this study was to distinguish between orthodontic patients with skeletal Class III malocclusions requiring surgery and those not requiring surgery by conducting a receiver operating characteristic analysis of cephalometric variables. METHODS We used lateral cephalometric radiographs of 80 subjects (40 nonsurgical and 40 surgical patients) with Class III malocclusions and obtain 25 cephalometric measurements using computerized cephalometry. Of these, 14 measurements showed statistically significant differences between the 2 groups. Receiver operating characteristic analysis was used to determine the ability of the 14 cephalometric measurements in distinguishing between the 2 groups. Six statistically validated and clinically relevant measurements were used to obtain the optimum discriminant effectiveness. RESULTS For a Class III malocclusion patient with any 4 of these 6 measurement criteria, the sensitivity was 88% and the specificity was 90% in determining the need for surgical treatment: overjet, ≤-4.73 mm; Wits appraisal, ≤-11.18 mm; L1-MP angle, ≤80.8°; Mx/Mn ratio, ≤65.9%; overbite, ≤-0.18 mm; and gonial angle, ≥120.8°. CONCLUSIONS We selected 6 cephalometric measurements as the minimum number of discriminators required to obtain the optimum discriminant effectiveness of diagnosis between surgical and nonsurgical treatment of skeletal Class III malocclusions.
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Talesh KT, Motamedi MHK, Yazdani J, Ghavimi A, Ghoreishizadeh A. Prevention of relapse following intraoral vertical ramus osteotomy mandibular setback: can coronoidotomy help? ACTA ACUST UNITED AC 2011; 111:557-60. [DOI: 10.1016/j.tripleo.2010.06.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2010] [Revised: 06/15/2010] [Accepted: 06/25/2010] [Indexed: 11/29/2022]
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Relationship Between Inferior Alveolar Nerve Canal Position at Mandibular Second Molar in Patients With Prognathism and Possible Occurrence of Neurosensory Disturbance After Sagittal Split Ramus Osteotomy. J Oral Maxillofac Surg 2010; 68:3022-7. [DOI: 10.1016/j.joms.2009.09.046] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2009] [Revised: 07/14/2009] [Accepted: 09/15/2009] [Indexed: 11/23/2022]
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Li Q, Li X, Zhang F, Chen F. The Identification of a Novel Locus for Mandibular Prognathism in the Han Chinese Population. J Dent Res 2010; 90:53-7. [DOI: 10.1177/0022034510382546] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Mandibular prognathism is a common dentofacial phenotype with a substantial genetic component; however, few susceptibility loci have been mapped. Ethnicity is a risk factor for mandibular prognathism, and a relatively high prevalence is observed in Asian populations. The hypothesis of this study suggested that a specific locus for mandibular prognathism exists in the Han Chinese population. So, the authors studied a Han Chinese pedigree in which mandibular prognathism was inherited (11 affected, 10 unaffected) in an autosomal dominant pattern. A genomewide linkage scan was performed with the Illumina Linkage-12 DNA Analysis Kit. Multipoint parametric and nonparametric linkage analyses were performed with MERLIN 1.01. A susceptibility locus was identified on chromosome 14q24.3-31.2, with a nonparametric linkage score of 11.341 (empirical P = .020) and a logarithm of the odds score of 2.032 (empirical P = .008). Haplotype analysis refined the candidate locus to a 10.62-cM interval (72.42 to 83.14 cM; 74.57 to 84.66 Mb) between rs1468507 and rs7141857. Within this interval, the candidate functional genes are TGFB3 and LTBP2. In conclusion, the authors detected a suggestive linkage for mandibular prognathism in a Han Chinese pedigree, and this finding can be combined with previous studies to further understand the genetic basis of mandibular prognathism.
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Affiliation(s)
- Q. Li
- Department of Orthodontics, Dental School, Tongji University, Shanghai, People’s Republic of China
| | - X. Li
- Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - F. Zhang
- Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - F. Chen
- Department of Orthodontics, Dental School, Tongji University, Shanghai, People’s Republic of China
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Li Q, Zhang F, Li X, Chen F. Genome scan for locus involved in mandibular prognathism in pedigrees from China. PLoS One 2010; 5. [PMID: 20844756 PMCID: PMC2937026 DOI: 10.1371/journal.pone.0012678] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2010] [Accepted: 08/18/2010] [Indexed: 11/21/2022] Open
Abstract
Background It is well known that genetic components play an important role in the etiology of mandibular prognathism, but few susceptibility loci have been mapped. Methodology In order to identify linkage regions for mandibular prognathism, we analyzed two Chinese pedigrees with 6,090 genome-wide single-nucleotide polymorphism (SNP) markers from Illumina Linkage-12 DNA Analysis Kit (average spacing 0.58 cM). Multipoint parametric and non-parametric (model-free) linkage analyses were used for the pedigrees. Principal Finding The most statistically significant linkage results were with markers on chromosome 4 (LOD = 3.166 and NPL = 3.65 with rs 875864, 4p16.1, 8.38 cM). Candidate genes within the 4p16.1 include EVC, EVC2. Conclusion We detected a novel suggestive linkage locus for mandibular prognathism in two Chinese pedigrees, and this linkage region provides target for susceptibility gene identification, a process that will provide important insights into the molecular and cellular basis of mandibular prognathism.
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Affiliation(s)
- Qin Li
- Department of Orthodontics, Dental School, Tongji University, Shanghai, China
| | - Feng Zhang
- Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Xin Li
- Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Fengshan Chen
- Department of Orthodontics, Dental School, Tongji University, Shanghai, China
- * E-mail:
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Yang HJ, Lee WJ, Yi WJ, Hwang SJ. Interferences between mandibular proximal and distal segments in orthognathic surgery for patients with asymmetric mandibular prognathism depending on different osteotomy techniques. ACTA ACUST UNITED AC 2010; 110:18-24. [DOI: 10.1016/j.tripleo.2009.12.049] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Accepted: 12/22/2009] [Indexed: 11/15/2022]
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Tomoyasu Y, Yamaguchi T, Tajima A, Nakajima T, Inoue I, Maki K. Further evidence for an association between mandibular height and the growth hormone receptor gene in a Japanese population. Am J Orthod Dentofacial Orthop 2009; 136:536-41. [DOI: 10.1016/j.ajodo.2007.10.054] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2007] [Revised: 10/01/2007] [Accepted: 10/01/2007] [Indexed: 01/01/2023]
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Lin HC, Chang HP, Chang HF. Treatment effects of occipitomental anchorage appliance of maxillary protraction combined with chincup traction in children with Class III malocclusion. J Formos Med Assoc 2007; 106:380-91. [PMID: 17561473 DOI: 10.1016/s0929-6646(09)60323-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND/PURPOSE Little information related to the treatment effects of the occipitomental anchorage (OMA) appliance of maxillary (Mx) protraction combined with chincup traction is available. The aim of this study was to investigate the treatment effects of the OMA orthopedic appliance on patients with Class III malocclusion. METHODS Pretreatment and post-treatment cephalometric records of 20 consecutively treated patients with Class III malocclusions were evaluated and compared with a matched sample of untreated Class III control subjects. RESULTS The OMA appliance is effective for correcting skeletal Class III malocclusion in growing children. The treatment effects of this orthopedic appliance were considered to be from both skeletal and dentoalveolar changes. The skeletal effects were mainly obtained by stimulating forward growth of the Mx complex with negligible rotation of the Mx plane and restraining forward advancement of the mandible (Mn) with backward and downward rotation of the Mn plane. The observed dentoalveolar effects were mostly due to the labial tipping movement of the Mx incisors. CONCLUSION Our results suggest that the OMA orthopedic appliance can correct the mesial jaw relationship and negative incisal over jet. This appliance is effective for correcting skeletal Class III malocclusion with both midface deficiency and Mn prognathism in growing children.
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Affiliation(s)
- Hsiang-Chien Lin
- Department of Orthodontics, Taipei Medical University Hospital and School of Dentistry, Taipei Medical University, Taipei, Taiwan
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