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AlQahtani FA, Varma SR, Kuriadom ST, AlMaghlouth B, AlAsseri N. Changes in occlusion after orthognathic surgery: a systematic review and meta-analysis. Oral Maxillofac Surg 2024; 28:79-90. [PMID: 37314643 DOI: 10.1007/s10006-023-01165-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 06/08/2023] [Indexed: 06/15/2023]
Abstract
PURPOSE This study aims to systematically review and identify the changes of occlusion in patients after orthognathic surgery. METHODS The protocol was developed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis Protocols (PRISMA-P) and was registered to the International Prospective Register of Systematic Reviews (PROSPERO) under the registration number CRD42021253129. Studies included were Original articles only, Additionally, studies were included if the outcome of occlusal force was measured pre- and postoperatively and if occlusal forces resulted from a long follow-up of a minimum of 1 year following orthognathic surgery using adequate measurement tools. Non-English articles, case reports, case series, and non-original articles, including systematic reviews and literature reviews, were excluded. RESULTS The search strategy yielded a total of 978 articles. Of the 978 articles, 285 were duplicates. After reading the titles and abstracts, 649 articles were excluded, and full-text articles of the remaining 47 studies were reviewed independently by two authors for eligibility wherein 33 articles were excluded, because they did not meet the inclusion criteria. Finally, a total of 14 studies were processed for critical review. CONCLUSION The occlusal force increased after orthognathic surgery, although not to the level of the control group; however, the maximal bite force remained unchanged. Immediately after orthognathic surgery, chewing and swallowing forces increased. Significant reductions in the postoperative occlusal contact pressure areas was also observed.
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Affiliation(s)
| | - Sudhir Rama Varma
- College of Dentistry, Department of Clinical Sciences, Ajman University, Ajman City, United Arab Emirates
- Center of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman City, United Arab Emirates
| | - Sam Thomas Kuriadom
- College of Dentistry, Department of Clinical Sciences, Ajman University, Ajman City, United Arab Emirates
- Center of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman City, United Arab Emirates
| | - Basma AlMaghlouth
- Dammam Medical Complex, Ministry of Health, Dammam City, Kingdom of Saudi Arabia
| | - Nasser AlAsseri
- Prince Sultan Military Medical City Hospital, Ministry of Defence, Riyadh City, Kingdom of Saudi Arabia
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Lim HK, Song IS, Park JE, Choi WC, Hwang J, Choi YJ, Kim DK, Lee UL. Relation Between Masticatory Performance and Skeletal Properties in Patients With Skeletal Class III Malocclusion. J Craniofac Surg 2024:00001665-990000000-01372. [PMID: 38393303 DOI: 10.1097/scs.0000000000010056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 01/10/2024] [Indexed: 02/25/2024] Open
Abstract
This study aimed to measure masticatory performance (MP) using β-carotene gummy jelly to investigate its relationship with skeletal properties in decompensated patients diagnosed with skeletal class III malocclusion. The study included 78 patients (38 men and 40 women) diagnosed with skeletal class III malocclusion without temporomandibular joint disorder and periodontal disease. MP was measured using a new masticatory measuring device and β-carotene in the gummy jelly. Lateral and posteroanterior cephalograms were obtained, and skeletal properties (Me deviation, ANB, SNB, APDI, Wits, ODI, facial axis, body length, ramus length, SN-GoGn, anterior facial height, posterior facial height, saddle angle, articular angle, and gonial angle) were evaluated. MP differences according to age and sex and the effect of skeletal properties on MP were analyzed using multiple linear regression analysis. The MP of all patients was 3690.55±1428.77 mm², MP of the male group was 4043.05±1498.09 mm², and MP of the female group was 3355.68±1272.19 mm². Among the items investigated, the variable that affected MP was posterior facial height. Posterior facial height showed a positive correlation (P=0.022). There was no significant difference between MP and other skeletal properties (P>0.05). The severity of the hypodivergency in skeletal class III could affect MP. The relationship between facial asymmetry or skeletal relation and MP could not be explained in this study.
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Affiliation(s)
- Ho-Kyung Lim
- Department of Oral and Maxillofacial Surgery, Korea University Guro Hospital, Seoul, Korea
| | - In-Seok Song
- Department of Oral and Maxillofacial Surgery, Korea University Anam Hospital, Seoul, Korea
| | - Jung-Eun Park
- Department of Orthodontics, Dental Center, Chung-Ang University Hospital, Seoul, Korea
| | - Won-Cheul Choi
- Department of Orthodontics, Dental Center, Chung-Ang University Hospital, Seoul, Korea
| | - Jiyoung Hwang
- Department of Oral and Maxillofacial Surgery, Chung-Ang University College of Medicine, Seoul, Korea
| | - Young-Jun Choi
- Department of Oral and Maxillofacial Surgery, Chung-Ang University College of Medicine, Seoul, Korea
| | - Don-Kyu Kim
- Department of Physical Medicine and Rehabilitation, Chung-Ang University College of Medicine, Seoul, Korea
| | - Ui-Lyong Lee
- Department of Oral and Maxillofacial Surgery, Chung-Ang University College of Medicine, Seoul, Korea
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Gomi K, Moroi A, Yoshizawa K, Iguchi R, Ueki K. Evaluation of tongue pressure and lip closing force in bimaxillary orthognathic surgery: A retrospective study. J Craniomaxillofac Surg 2023; 51:696-701. [PMID: 37652849 DOI: 10.1016/j.jcms.2023.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/27/2023] [Accepted: 08/23/2023] [Indexed: 09/02/2023] Open
Abstract
The purpose of this study was to quantitatively compare changes in tongue pressure and lip closing force among skeletal Class II and Class III patients, who had undergone orthognathic surgery, and a control group. Maximum tongue pressure and lip closing forces were measured preoperatively and at 6 and 12 months postoperatively. Time-course changes were analyzed and compared among the groups. The control group involved 40 skeletal Class I occlusion volunteers (20 male and 20 female), the Class II group involved 20 female patients, and the skeletal Class III group involved 40 patients, who were subdivided by sex into two groups comprising 20 males and 20 females, respectively. Time-course changes in tongue pressure were not significantly different between and within groups. However, postoperative lip closing forces became gradually higher in the Class III group female and male subjects compared with the control group, although this was not observed in the Class II group. There were significant correlations between tongue pressure and lip closing force before and after surgery (p = 0.001), and these correlations increased over time. Although there was no significant increase in maximum tongue pressure after orthognathic surgery, there was an associated increase in perioral muscle strength. This suggests that an increase in perioral muscle strength may contribute more to the stability of postoperative jaw morphology.
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Affiliation(s)
- Karen Gomi
- Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. K Ueki), Division of Clinical Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato Chuo-shi, Yamanashi, 409-3898, Japan.
| | - Akinori Moroi
- Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. K Ueki), Division of Clinical Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato Chuo-shi, Yamanashi, 409-3898, Japan
| | - Kunio Yoshizawa
- Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. K Ueki), Division of Clinical Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato Chuo-shi, Yamanashi, 409-3898, Japan
| | - Ran Iguchi
- Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. K Ueki), Division of Clinical Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato Chuo-shi, Yamanashi, 409-3898, Japan
| | - Koichiro Ueki
- Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. K Ueki), Division of Clinical Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato Chuo-shi, Yamanashi, 409-3898, Japan
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Dvoranova B, Vavro M, Czako L, Hirjak D. Does orthognathic surgery affect mandibular condyle position? A retrospective study. Oral Maxillofac Surg 2023:10.1007/s10006-023-01181-3. [PMID: 37740127 DOI: 10.1007/s10006-023-01181-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 09/16/2023] [Indexed: 09/24/2023]
Abstract
PURPOSE The aim of this study is to analyze mandibular condyle position changes after bilateral sagittal split osteotomy (BSSO) and bimaxillary orthognathic surgery in patients operated at a single department by two surgeons in 2013-2022. Compared were groups of mandibular advancement vs setback and bimaxillary vs BSSO. METHODS Ninety-nine subjects were included. Inclusion criteria were patients who underwent one of the BSSO or bimaxillary surgery and had CT scans performed before and after surgery. Preoperative CT scans were performed 1 day before surgery and postoperative CT scans 6-12 months afterwards. Changes in mandibular condyle position were measured in axial and sagittal planes. RESULTS CT condylar position measurements indicated significant postoperative changes in AB angle bilaterally (p = < 0.001). In mandibular advancement and setback comparison, values were significantly lower in ABL angle values in the setback group (p = 0.011326) and significantly higher in FDR in the advancement group (p = 0.005795). There were no statistically significant changes found in BSSO and bimaxillary group comparison. CONCLUSION Within the limitations of this study, it can be concluded that orthognathic surgery does have a moderate effect on position of the condyles, especially condylar rotation in transversal axis.
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Affiliation(s)
- Bronislava Dvoranova
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Comenius University and University Hospital Bratislava, Bratislava, Slovakia.
| | - Michal Vavro
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Comenius University and University Hospital Bratislava, Bratislava, Slovakia
| | - Ladislav Czako
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Comenius University and University Hospital Bratislava, Bratislava, Slovakia
| | - Dusan Hirjak
- Department of Stomatology and Maxillofacial Surgery, Faculty of Medicine, Comenius University, Oncologic Institute of St Elisabeth, Bratislava, Slovakia
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Li J, Liu Y, Ge X, Liu Z, Guan H, Wang L, Ma W. A cross-sectional study on three-dimensional compensatory characteristics of maxillary teeth in patients with different types of skeletal Class III malocclusion with mandibular asymmetry. Clin Oral Investig 2023; 27:4973-4985. [PMID: 37417986 DOI: 10.1007/s00784-023-05116-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 06/08/2023] [Indexed: 07/08/2023]
Abstract
OBJECTIVE The purpose of this study was to analyze three-dimensional dental compensation in patients with different types of skeletal Class III malocclusion with mandibular asymmetry, using cone-beam computed tomography (CBCT) and three-dimensional reconstruction measurement technology, thereby providing clinical guidance and reference for combined orthodontic and orthognathic treatment. METHODS 81 patients with skeletal Class III malocclusion with mandibular asymmetry were selected in accordance with the inclusion criteria. According to a new classification method based on the direction and amount of menton deviation relative to ramus deviation, patients were divided into three groups called Type 1, Type 2, and Type 3. In Type 1, the direction of menton deviation was consistent with that of ramus deviation and the amount of menton deviation was greater than that of ramus deviation. In Type 2, the direction of menton deviation was consistent with that of ramus deviation and the amount of menton deviation was smaller than that of ramus deviation. In Type 3, the direction of menton deviation was inconsistent with that of ramus deviation. The maxillary occlusal plane (OP), anterior occlusal plane (AOP), and posterior occlusal plane (POP) were measured on reconstructed CBCT images. The vertical, transverse, and anteroposterior distances from maxillary teeth to reference planes and the 3D angles between the long axis of these teeth and reference planes were measured. These dental variables measured from the deviated and non-deviated sides were compared within each group, as well as among each other. RESULTS Of the 81 patients with asymmetrical Class III malocclusion, 52 patients were categorized in Type 1, 12 patients in Type 2, and 17 patients in Type 3. There were significant differences between deviated and non-deviated sides in Type 1 and Type 3 (p < 0.05). In Type 1, the vertical distances of maxillary teeth on the deviated side were lower than those on the non-deviated side, and AOP, OP, and POP on the deviated side were larger than those on the non-deviated side (p < 0.05). In Type 3, the vertical distances of the maxillary teeth on the deviated side were lower (p < 0.05), and the AOP and OP on the deviated side were larger than those on the non-deviated side. In all three groups, the transverse distances of the maxillary teeth from the mid-sagittal plane on the deviated side were larger than those on the non-deviated side (p < 0.05), and the angles between the long axis of maxillary teeth and the mid-sagittal plane on the deviated side were larger, respectively (p < 0.05). CONCLUSIONS The maxillary teeth on the deviated side were observed to have smaller eruption heights in Type 1 and Type 3. In Type 1, AOP, POP, and OP were greater on the deviated side, while in Type 3, only AOP and OP were greater on the deviated side. The maxillary teeth of patients in all three groups on the deviated side were buccal and buccally inclined. Larger sample observations are still needed to further verify these findings.
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Affiliation(s)
- Jie Li
- Department of Orthodontics, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, People's Republic of China
| | - Yang Liu
- Department of Orthodontics, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, People's Republic of China
| | - Xiaolei Ge
- Department of Orthodontics, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, People's Republic of China
| | - Ziyang Liu
- Department of Orthodontics, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, People's Republic of China
| | - Huibo Guan
- Department of Orthodontics, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, People's Republic of China
| | - Linna Wang
- Department of Orthodontics, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, People's Republic of China
| | - Wensheng Ma
- Department of Orthodontics, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, People's Republic of China.
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Hernández-Alfaro F, Valls-Ontañón A. Aesthetic Considerations in Orthofacial Surgery. Oral Maxillofac Surg Clin North Am 2022; 35:1-10. [DOI: 10.1016/j.coms.2022.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Kwon H, Park SH, Jung HI, Hwang WC, Choi YJ, Chung C, Kim KH. Comparison of the bite force and occlusal contact area of the deviated and non-deviated sides after intraoral vertical ramus osteotomy in skeletal Class III patients with mandibular asymmetry: Two-year follow-up. Korean J Orthod 2022; 52:kjod21.236. [PMID: 35504730 PMCID: PMC9117793 DOI: 10.4041/kjod21.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 12/11/2021] [Accepted: 12/18/2021] [Indexed: 12/03/2022] Open
Abstract
Objective The objectives of this study were to compare the time-dependent changes in occlusal contact area (OCA) and bite force (BF) of the deviated and non-deviated sides in mandibular prognathic patients with mandibular asymmetry before and after orthognathic surgery and investigate the factors associated with the changes in OCA and BF on each side. Methods The sample consisted of 67 patients (33 men and 34 women; age range 15-36 years) with facial asymmetry who underwent 2-jaw orthognathic surgery. OCA and BF were taken before presurgical orthodontic treatment, within 1 month before surgery, and 1 month, 3 months, 6 months, 1 year, and 2 years after surgery. OCA and BF were measured using the Dental Prescale System. Results The OCA and BF decreased gradually before surgery and increased after surgery on both sides. The OCA and BF were significantly greater on the deviated side than on the non-deviated side before surgery, and there was no difference after surgery. According to the linear mixed-effect model, only the changes in the mandibular plane angle had a significant effect on BF (p < 0.05). Conclusions There was a difference in the amount of the OCA and BF between the deviated and non-deviated sides before surgery. The change in mandibular plane angle affects the change, especially on the non-deviated side, during the observation period.
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Affiliation(s)
- Hyejin Kwon
- Department of Orthodontics, College of Dentistry, Yonsei University, Seoul, Korea
| | - Sun-Hyung Park
- Department of Orthodontics, The Institute of Craniofacial Deformity, College of Dentistry, Yonsei University, Seoul, Korea
| | - Hoi-In Jung
- Department of Preventive Dentistry and Public Oral Health, College of Dentistry, Yonsei University, Seoul, Korea
| | - Woo-Chan Hwang
- Department of Orthodontics, College of Dentistry, Yonsei University, Seoul, Korea
| | - Yoon Jeong Choi
- Department of Orthodontics, The Institute of Craniofacial Deformity, College of Dentistry, Yonsei University, Seoul, Korea
| | - Chooryung Chung
- Department of Orthodontics, The Institute of Craniofacial Deformity, Gangnam Severance Dental Hospital, College of Dentistry, Yonsei University, Seoul, Korea
| | - Kyung-Ho Kim
- Department of Orthodontics, The Institute of Craniofacial Deformity, Gangnam Severance Dental Hospital, College of Dentistry, Yonsei University, Seoul, Korea
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Evaluation of masticatory efficiency in patients with jaw deformities using the gummy jelly method. ADVANCES IN ORAL AND MAXILLOFACIAL SURGERY 2021. [DOI: 10.1016/j.adoms.2021.100166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Yamada T, Sugiyama G, Mori Y. Masticatory muscle function affects the pathological conditions of dentofacial deformities. JAPANESE DENTAL SCIENCE REVIEW 2020; 56:56-61. [PMID: 31956379 PMCID: PMC6957801 DOI: 10.1016/j.jdsr.2019.12.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 12/12/2019] [Accepted: 12/18/2019] [Indexed: 12/12/2022] Open
Abstract
The causes of dentofacial deformities include various known syndromes, genetics, environmental and neuromuscular factors, trauma, and tumors. Above all, the functional effects of muscles are important, and deformation of the mandible is often associated with a mechanical imbalance of the masticatory muscles. With the vertical position of the face, weakness of the sling of the masseter muscle and medial pterygoid muscle causes dilatation of the mandibular angle. In patients with a deep bite, excessive function of the masticatory muscles is reported. Myosin heavy chain (MyHC) properties also affect jawbone morphology. In short-face patients, the proportion of type II fibers, which are fast muscles, is high. The proportions of muscle fiber types are genetically determined but can be altered by postnatal environmental factors. Orthognathic surgery may results in the transition of MyHC to type II (fast) fibers, but excessive stretching enhances the release of inflammatory mediators and causes a shift toward a greater proportion of slow muscle fibers. This feature can be related to postoperative relapse. Bones and muscles are in close crosstalk, and it may be possible to use biochemical approaches as well as biomechanical considerations for the treatment of jaw deformities.
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Affiliation(s)
- Tomohiro Yamada
- Section of Oral and Maxillofacial Surgery, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Japan
| | - Goro Sugiyama
- Section of Oral and Maxillofacial Surgery, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Japan
| | - Yoshihide Mori
- Section of Oral and Maxillofacial Surgery, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Japan
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Kim KA, Park HS, Lee SY, Kim SJ, Baek SH, Ahn HW. Short-term changes in muscle activity and jaw movement patterns after orthognathic surgery in skeletal Class III patients with facial asymmetry. Korean J Orthod 2019; 49:254-264. [PMID: 31367580 PMCID: PMC6658898 DOI: 10.4041/kjod.2019.49.4.254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 03/27/2019] [Accepted: 04/01/2019] [Indexed: 11/10/2022] Open
Abstract
Objective To evaluate the short-term changes in masticatory muscle activity and mandibular movement patterns after orthognathic surgery in skeletal Class III patients with facial asymmetry. Methods Twenty-seven skeletal Class III adult patients were divided into two groups based on the degree of facial asymmetry: the experimental group (n = 17 [11 male and 6 female]; menton deviation ≥ 4 mm) and control group (n = 10 [4 male and 6 female]; menton deviation < 1.6 mm). Cephalography, electromyography (EMG) for the anterior temporalis (TA) and masseter muscles (MM), and mandibular movement (range of motion [ROM] and average chewing pattern [ACP]) were evaluated before (T0) and 7 to 8 months (T1) after the surgery. Results There were no significant postoperative changes in the EMG potentials of the TA and MM in both groups, except in the anterior cotton roll biting test, in which the masticatory muscle activity had changed into an MM-dominant pattern postoperatively in both groups. In the experimental group, the amount of maximum opening, protrusion, and lateral excursion to the non-deviated side were significantly decreased. The turning point tended to be shorter and significantly moved medially during chewing in the non-deviated side in the experimental group. Conclusions In skeletal Class III patients with facial asymmetry, the EMG activity characteristics recovered to presurgical levels within 7 to 8 months after the surgery. Correction of the asymmetry caused limitation in jaw movement in terms of both ROM and ACP on the non-deviated side.
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Affiliation(s)
- Kyung-A Kim
- Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea
| | - Hong-Sik Park
- Department of Dentistry, Graduate School, Kyung Hee University, Seoul, Korea
| | - Soo-Yeon Lee
- Department of Dentistry, Graduate School, Kyung Hee University, Seoul, Korea
| | - Su-Jung Kim
- Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea
| | - Seung-Hak Baek
- Department of Orthodontics, School of Dentistry, Seoul National University, Seoul, Korea.,Dental Research Institute, Seoul National University, Seoul, Korea
| | - Hyo-Won Ahn
- Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea
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Pinheiro M, Ma X, Fagan MJ, McIntyre GT, Lin P, Sivamurthy G, Mossey PA. A 3D cephalometric protocol for the accurate quantification of the craniofacial symmetry and facial growth. J Biol Eng 2019; 13:42. [PMID: 31131023 PMCID: PMC6525456 DOI: 10.1186/s13036-019-0171-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 04/21/2019] [Indexed: 11/10/2022] Open
Abstract
Background Cephalometric analysis is used to evaluate facial growth, to study the anatomical relationships within the face. Cephalometric assessment is based on 2D radiographic images, either the sagittal or coronal planes and is an inherently inaccurate methodology. The wide availability of 3D imaging techniques, such as computed tomography and magnetic resonance imaging make routine 3D analysis of facial morphology feasible. 3D cephalometry may not only provide a more accurate quantification of the craniofacial morphology and longitudinal growth, but also the differentiation of subtle changes in occlusion. However, a reliable protocol for the computation of craniofacial symmetry and quantification of craniofacial morphology is still a topic of extensive research. Here, a protocol for 3D cephalometric analysis for both the identification of the natural head position (NHP) and the accurate quantification of facial growth and facial asymmetry is proposed and evaluated. A phantom study was conducted to assess the performance of the protocol and to quantify the ability to repeatedly and reliably align skulls with the NHP and quantify the degree of accuracy with which facial growth and facial asymmetry can be measured. Results The results obtained show that the protocol allows consistent alignment with the NHP, with an overall average error (and standard deviation) of just 0.17 (9.10e-6) mm, with variations of 0.21 (2.77e-17) mm in the frontonasal suture and 0.30 (5.55e-17) mm in the most prominent point in the chin. The average errors associated with simulated facial growth ranged from 1.83 to 3.75% for 2 years' growth and from - 9.57 to 14.69% for 4 years, while the error in the quantification of facial asymmetry ranged from - 11.38 to 9.31%. Conclusions The protocol for 3D skull alignment produces accurate and landmark free estimation of the true symmetry of the head. It allows a reliable alignment of the skull in the NHP independently of user-defined landmarks, as well as an accurate quantification of facial growth and asymmetry.
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Affiliation(s)
- Manuel Pinheiro
- 1School of Engineering and Computer Science, University of Hull, Hull, UK
| | - Xinhui Ma
- 1School of Engineering and Computer Science, University of Hull, Hull, UK
| | - Michael J Fagan
- 1School of Engineering and Computer Science, University of Hull, Hull, UK
| | - Grant T McIntyre
- 2Department of Orthodontics, School of Dentistry, University of Dundee, Dundee, UK
| | - Ping Lin
- 2Department of Orthodontics, School of Dentistry, University of Dundee, Dundee, UK
| | - Gautham Sivamurthy
- 2Department of Orthodontics, School of Dentistry, University of Dundee, Dundee, UK
| | - Peter A Mossey
- 2Department of Orthodontics, School of Dentistry, University of Dundee, Dundee, UK
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Ueki K, Yoshizawa K, Moroi A, Tsutsui T, Hotta A, Hiraide R, Takayama A, Tsunoda T, Saito Y, Sato M, Baba N. Relationship between occlusal force and condylar morphology in class II and III after bi-maxillary osteotomy. J Craniomaxillofac Surg 2018; 46:2103-2107. [DOI: 10.1016/j.jcms.2018.10.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/15/2018] [Accepted: 10/15/2018] [Indexed: 11/30/2022] Open
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Modified hybrid fixation using absorbable plate and screw for mandibular advancement surgery. J Craniomaxillofac Surg 2017; 45:1788-1793. [DOI: 10.1016/j.jcms.2017.08.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 06/27/2017] [Accepted: 08/02/2017] [Indexed: 11/19/2022] Open
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Tsutsui T, Yoshizawa K, Moroi A, Hotta A, Fukaya K, Hiraide R, Takayama A, Tsunoda T, Saito Y, Iguchi R, Kosaka A, Ikawa H, Ueki K. Change in lip closing force in Classes II and III malocclusion before and after sagittal split ramus osteotomy with Le Fort I osteotomy. J Craniomaxillofac Surg 2017; 45:1415-1418. [PMID: 28754365 DOI: 10.1016/j.jcms.2017.06.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 06/07/2017] [Accepted: 06/30/2017] [Indexed: 10/19/2022] Open
Abstract
PURPOSE The purpose of this study was to examine lip closing force in Class II and III patients before and after orthognathic surgery. SUBJECT AND METHODS The subjects were 45 patients (15 Class II women, 15 Class III men and 15 Class III women) diagnosed with jaw deformity who underwent sagittal split ramus osteotomy with Le Fort I osteotomy and 30 controls with normal skeleton and occlusion (15 men, 15 women). Maximum and minimum lip closing forces were measured using Lip De Cum® before and after surgery, and compared statistically. RESULTS In the Class II women, maximum and minimum lip closing forces did not change after surgery. However, maximum and minimum lip pressure increased significantly in the Class III men (P = 0.0116, P = 0.0295) and maximum lip closing force increased significantly in the Class III women (P = 0.0082). After 6 months, maximum lip closing force was significantly lower in both Classes II and III women than in the control women (P = 0.0002, P = 0.0045). CONCLUSIONS This study suggested that maximum postoperative lip pressure did not improve in the Class II women, although maximum lip closing force increased in the Class III men and women after sagittal split ramus osteotomy with Le Fort I osteotomy.
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Affiliation(s)
- Takamitsu Tsutsui
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. K Ueki), Division of Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan.
| | - Kunio Yoshizawa
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. K Ueki), Division of Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan
| | - Akinori Moroi
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. K Ueki), Division of Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan
| | - Asami Hotta
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. K Ueki), Division of Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan
| | - Kenichi Fukaya
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. K Ueki), Division of Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan
| | - Ryota Hiraide
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. K Ueki), Division of Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan
| | - Akihiro Takayama
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. K Ueki), Division of Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan
| | - Tatsuya Tsunoda
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. K Ueki), Division of Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan
| | - Yuki Saito
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. K Ueki), Division of Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan
| | - Ran Iguchi
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. K Ueki), Division of Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan
| | - Akihiko Kosaka
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. K Ueki), Division of Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan
| | - Hiroumi Ikawa
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. K Ueki), Division of Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan
| | - Koichiro Ueki
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. K Ueki), Division of Medicine, Interdisciplinary Graduate School, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan
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Moroi A, Yoshizawa K, Iguchi R, Ikawa H, Kosaka A, Hotta A, Tsutsui T, Saida Y, Ueki K. The amount of mandibular setback influence on occlusal force following sagittal split ramus osteotomy. J Craniomaxillofac Surg 2015; 43:1743-8. [PMID: 26431610 DOI: 10.1016/j.jcms.2015.08.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 07/15/2015] [Accepted: 08/18/2015] [Indexed: 11/16/2022] Open
Abstract
PURPOSE The purpose of this study was to examine the influence between the magnitude of setback in sagittal split ramus osteotomy (SSRO) and occlusal contact area and bite force without relapse after surgery. PATIENTS AND METHODS Sixty female patients with a diagnosis of mandibular prognathism were divided into 3 groups according to the magnitude of setback: group 1 (≤5 mm), group 2 (>5 mm but <10 mm), and group 3 (≥10 mm). All patients underwent skeletal analysis by lateral and frontal cephalogrammetry and measured the occlusal contact area and bite force by the pressure-sensitive system (Dental Prescale, Dental Occlusion Pressuregraph FDP-705; Fuji Photo Film Co., Tokyo, Japan) preoperatively and postoperatively at 1 month, 3 months, 6 months, and 1 year. RESULTS There were no significant differences in occlusal contact area and bite force between the 3 groups. Only group 3 showed a significant difference in occlusal contact area and bite force between the preoperative and 1-year measurements. CONCLUSION The results indicate that the magnitude of setback did not influence the bite force or occlusal contact area in SSRO.
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Affiliation(s)
- Akinori Moroi
- Department of Oral & Maxillofacial Surgery, Division of Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, Japan.
| | - Kunio Yoshizawa
- Department of Oral & Maxillofacial Surgery, Division of Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, Japan
| | - Ran Iguchi
- Department of Oral & Maxillofacial Surgery, Division of Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, Japan
| | - Hiroumi Ikawa
- Department of Oral & Maxillofacial Surgery, Division of Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, Japan
| | - Akihiko Kosaka
- Department of Oral & Maxillofacial Surgery, Division of Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, Japan
| | - Asami Hotta
- Department of Oral & Maxillofacial Surgery, Division of Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, Japan
| | - Takamitsu Tsutsui
- Department of Oral & Maxillofacial Surgery, Division of Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, Japan
| | - Yuriko Saida
- Department of Oral & Maxillofacial Surgery, Division of Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, Japan
| | - Koichiro Ueki
- Department of Oral & Maxillofacial Surgery, Division of Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, Japan
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