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Jiang Y, Wang Y, Wang T, Liu D, Lin C, Wang J, Zhi C, Qiu Z, Hou Y, Zhang C. Orthodontic camouflage treatment of a hyperdivergent adolescent patient with anterior open bite and TMD: a case report. BMC Oral Health 2024; 24:629. [PMID: 38807098 PMCID: PMC11134689 DOI: 10.1186/s12903-024-04264-z] [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: 01/22/2024] [Accepted: 04/16/2024] [Indexed: 05/30/2024] Open
Abstract
BACKGROUND In orthodontics, anterior open bite is a common malocclusion that recurs frequently. Because the causes of anterior open bite are so varied, medical professionals must create customized treatment programs for each patient based on their unique etiology. Through the lowering of the posterior teeth, closure of the anterior teeth gap, and cooperation with intermaxillary traction, the treatment plan outlined in this case study sought to achieve a stable occlusion. CASE PRESENTATION This case report aims to describe an orthodontic camouflage treatment of a 15-year-old female patient with anterior open bite, arch width discrepancy and a history of temporomandibular joint disorder. The patient was treated with intermaxillary vertical elastics and the multiple edgewise arch wire (MEAW) approach. A satisfactory occlusion with a neutral molar relationship was attained after 29 months of orthodontic therapy. The condylography recording showed that this patient's occlusion tended to be more stable both before and after our treatment. The purpose of this case study is to provide an overview of an orthodontic camouflage treatment for a female patient, who had a history of temporomandibular joint disease, anterior open bite, and arch width disparity. CONCLUSIONS Our results demonstrated that more attention should be paid to levelling the occlusal plane, intrusion of the molars, decompression of temporomandibular joints and the etiology factors of malocclusion during the orthodontic period for those patients with anterior open bite.
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Affiliation(s)
- Yilin Jiang
- Department of Orthodontics, School of Medicine, Tianjin Stomatological Hospital, Nankai University, Tianjin, China
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin Stomatological Hospital, Nankai University, No. 75 Dagu North Road, Heping District, Tianjin, 300041, China
| | - Yajing Wang
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin, China
| | - Tianqi Wang
- Department of Stomatology, Peking University BinHai Hospital, Tianjin, China
| | - Dongqiao Liu
- Department of Orthodontics, Zhengzhou Stomatological Hospital, Zhengzhou, China
| | - Chen Lin
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin Stomatological Hospital, Nankai University, No. 75 Dagu North Road, Heping District, Tianjin, 300041, China
| | - Jing Wang
- Department of Stomatology, Shanxi Bethune Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China
| | - Cheng Zhi
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin, China
| | - Ziqian Qiu
- Department of Orthodontics, School of Medicine, Tianjin Stomatological Hospital, Nankai University, Tianjin, China
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin Stomatological Hospital, Nankai University, No. 75 Dagu North Road, Heping District, Tianjin, 300041, China
| | - Yuanfu Hou
- Department of Orthodontics, School of Medicine, Tianjin Stomatological Hospital, Nankai University, Tianjin, China
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin Stomatological Hospital, Nankai University, No. 75 Dagu North Road, Heping District, Tianjin, 300041, China
| | - Chunxiang Zhang
- Department of Orthodontics, School of Medicine, Tianjin Stomatological Hospital, Nankai University, Tianjin, China.
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin Stomatological Hospital, Nankai University, No. 75 Dagu North Road, Heping District, Tianjin, 300041, China.
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Zhou C, Duan P, He H, Song J, Hu M, Liu Y, Liu Y, Guo J, Jin F, Cao Y, Jiang L, Ye Q, Zhu M, Jiang B, Ruan W, Yuan X, Li H, Zou R, Tian Y, Gao L, Shu R, Chen J, Liu R, Zou S, Li X. Expert consensus on pediatric orthodontic therapies of malocclusions in children. Int J Oral Sci 2024; 16:32. [PMID: 38627388 PMCID: PMC11021504 DOI: 10.1038/s41368-024-00299-8] [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: 01/31/2024] [Revised: 03/08/2024] [Accepted: 04/03/2024] [Indexed: 04/19/2024] Open
Abstract
Malocclusion, identified by the World Health Organization (WHO) as one of three major oral diseases, profoundly impacts the dental-maxillofacial functions, facial esthetics, and long-term development of ~260 million children in China. Beyond its physical manifestations, malocclusion also significantly influences the psycho-social well-being of these children. Timely intervention in malocclusion can foster an environment conducive to dental-maxillofacial development and substantially decrease the incidence of malocclusion or reduce the severity and complexity of malocclusion in the permanent dentition, by mitigating the negative impact of abnormal environmental influences on the growth. Early orthodontic treatment encompasses accurate identification and treatment of dental and maxillofacial morphological and functional abnormalities during various stages of dental-maxillofacial development, ranging from fetal stages to the early permanent dentition phase. From an economic and societal standpoint, the urgency for effective early orthodontic treatments for malocclusions in childhood cannot be overstated, underlining its profound practical and social importance. This consensus paper discusses the characteristics and the detrimental effects of malocclusion in children, emphasizing critical need for early treatment. It elaborates on corresponding core principles and fundamental approaches in early orthodontics, proposing comprehensive guidance for preventive and interceptive orthodontic treatment, serving as a reference for clinicians engaged in early orthodontic treatment.
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Affiliation(s)
- Chenchen Zhou
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Peipei Duan
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hong He
- State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration & Key Laboratory of Oral Biomedicine Ministry of Education & Hubei Key Laboratory of Stomatology & Department of Orthodontics & Center for Dentofacial Development and Sleep Medicine, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Jinlin Song
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences & Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Stomatological Hospital of Chongqing Medical University, Chongqing Medical University & College of Stomatology, Chongqing Medical University, Chongqing, China
| | - Min Hu
- Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Yuehua Liu
- Department of Orthodontic & Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Yan Liu
- Department of Orthodontics, Central Laboratory, Peking University School and Hospital for Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
| | - Jie Guo
- Department of Orthodontics, School and Hospital of Stomatology, College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Shandong University, Jinan, China
| | - Fang Jin
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, Air Force Medical University, Xi'an, China
| | - Yang Cao
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Lingyong Jiang
- Center of Craniofacial Orthodontics, Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & College of Stomatology, Shanghai Jiao Tong University & National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
| | - Qingsong Ye
- Center of Regenerative Medicine, Department of Stomatology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Min Zhu
- Department of Oral and Cranio-maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & National Clinical Research Center for Oral Diseases & Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Beizhan Jiang
- Department of Pediatric Dentistry, School and Hospital of Stomatology, Tongji University & Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Wenhua Ruan
- Department of Stomatology, The Children's Hospital, Zhejiang University School of Medicine & National Clinic Research Center for Child Health, Hangzhou, China
| | - Xiao Yuan
- Department of Orthodontics, The Affiliated Hospital of & School of Stomatology, Qingdao University, Qingdao, China
| | - Huang Li
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Rui Zou
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases & College of Stomatology, Xi'an Jiaotong University & Department of Orthodontics, Xi'an Jiaotong University, Xi'an, China
| | - Yulou Tian
- Department of Orthodontics, School and Hospital of Stomatology, China Medical University & Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - Li Gao
- Department of Pediatric Dentistry, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Rui Shu
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jianwei Chen
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Renkai Liu
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shujuan Zou
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
| | - Xiaobing Li
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
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Xu F, Fang Y, Sui X, Yao Y. Comparison of Twin Block appliance and Herbst appliance in the treatment of Class II malocclusion among children: a meta-analysis. BMC Oral Health 2024; 24:278. [PMID: 38409017 PMCID: PMC10895725 DOI: 10.1186/s12903-024-04027-w] [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: 11/01/2023] [Accepted: 02/14/2024] [Indexed: 02/28/2024] Open
Abstract
BACKGROUND Our meta-analysis aimed to evaluate the efficacy of applying Herbst and Twin Block appliances in the treatment of Class II malocclusion among children. METHODS Databases, including PubMed, Embase, Cochrane Library, Web of Science, China National Knowledge Infrastructure (CNKI), China VIP Database (VIP), and Wanfang were thoroughly searched from inception to August 9, 2023. The outcomes included skeletal, dental, and soft tissue changes. The weighted mean difference (WMD) was used as the effect indicator, and the effect size was expressed with a 95% confidence interval (CI). The heterogeneity of each outcome effect size was tested, and the heterogeneity statistic I2 ≥ 50% was analyzed by the random-effect model, otherwise, the fixed-effect model was conducted. Sensitivity analysis was performed. RESULTS A total of 12 studies involving 574 patients were included in this meta-analysis. Herbst appliance had a statistically significant increase in mandibular body length (WMD: 1.44, 95% CI: 0.93 to 1.96, P < 0.001) compared with the Twin Block appliance. More increases in angle and distance of L1 to mandibular plane (MP) were found in the Herbst appliance compared with the Twin Block appliance. Significant and greater improvements in molar relationship (WMD: 0.79, 95% CI: 0.28 to 1.29, P = 0.002), posterior facial height (WMD: -1.23, 95% CI: -2.08 to -0.38, P = 0.005), convexity angle (WMD: -1.89, 95% CI: -3.12 to -0.66, P = 0.003), and Sella-Nasion plane angle (U1 to SN) (WMD: 3.34, 95% CI: 2.25 to 4.43, P < 0.001) were achieved in the Twin Block appliance. Herbst and Twin Block appliances produced similar effects in the skeletal and dentoalveolar changes including Sella-Nasion-point A (SNA), Sella-Nasion-point B, point A-Nasion-point B (ANB), overjet, and overbite. CONCLUSION As the findings revealed both Herbst and Twin Block appliances contributed successfully to the correction of Class II malocclusion. Compared with the Twin Block appliance, the Herbst appliance may have more advantages in mandibular bone movement. Twin Block therapy resulted in more improvement in the aesthetics of the face.
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Affiliation(s)
- Feifei Xu
- Department of Pediatric Stomatology, Jinan Stomatology Hospital, 101 Jingliu Road, Shizhong District, Jinan City, Shandong Province, 250000, P. R. China
| | - Ying Fang
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangdong, Guangzhou, 510182, P. R. China
| | - Xiaoling Sui
- Department of Pediatric Stomatology, Yantai Stomatological Hospital, Yantai, Shandong, 264000, P. R. China
| | - Yapeng Yao
- Department of Pediatric Stomatology, Jinan Stomatology Hospital, 101 Jingliu Road, Shizhong District, Jinan City, Shandong Province, 250000, P. R. China.
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Tariq R, Khan MT, Afaq A, Tariq S, Tariq Y, Khan SS. Malocclusion: Prevalence and Determinants among Adolescents of Karachi, Pakistan. Eur J Dent 2024; 18:143-153. [PMID: 37059446 PMCID: PMC10959627 DOI: 10.1055/s-0043-1761461] [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: 04/16/2023] Open
Abstract
OBJECTIVES The aim of this study was to determine the prevalence of malocclusion and its associated demographic and clinical factors in young adolescents (13-15 years) of Karachi, Pakistan. MATERIALS AND METHODS An epidemiological survey included 500 young adolescents of registered schools, madrassas (Islamic education system), and shop workers of Gulshan-e-Iqbal Town. It was a cross-sectional analytical study design. Multistage random sampling technique was used to enroll participants. The pattern of occlusion was recorded with other related features using Angle's classification. Health status was recorded through World Health Organization-guided indices (decayed, missing, and filled permanent teeth [DMFT], community periodontal index of treatment needs [CPITN], and body mass index [BMI]). The information, thus, obtained was analyzed through SPSS using the chi-squared test and regression models. RESULTS Forty four percent of the participants were female, while overall estimated prevalence of malocclusion in young adolescents of Karachi was 57.4%. After adjustments, participants going to any kind of education system had less malocclusion in comparison to those who were not going to any education system (adjusted odds ratio [aOR] = 0.305, 95% confidence interval [CI] = 0.12-0.73); mother's education especially higher level (aOR = 2.02, 95% CI = 1.08-3.75) and presence of periodontal disease (aOR = 1.57, 95% CI = 1.06-2.33) were significantly associated with malocclusion. CONCLUSION This study showed that the class I malocclusion is prevalent in the local community. Demographic factors like gender, age, self-reported ethnicity, and BMI did not show any significant role. Education or knowledge of parents and young adolescents does play an influential role in decreasing malocclusion. Young adolescents, who are more prone to oral health problems at an early age, would have more chances to develop occlusal discrepancies.
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Affiliation(s)
- Rabia Tariq
- Department of Research, School of Public Health, Dow University of Health Sciences (DUHS), Karachi, Pakistan
| | - Muhammad Tahir Khan
- School of Public Health, Dow University of Health Sciences (DUHS), Karachi, Pakistan
| | - Ashar Afaq
- Dow International Dental College, Dow University of Health Sciences (DUHS), Karachi, Pakistan
| | - Sobia Tariq
- Department of Oral and Maxillofacial surgery, Liaquat College of Medicine and Dentistry, Karachi, Pakistan
| | - Yasir Tariq
- Center of Advanced Consultants in Healthcare Education and Training, Riyadh, Kingdom of Saudi Arabia
| | - Sana Shakil Khan
- Department of Oral and Maxillofacial surgery, Abbasi Shaheed Hospital, Karachi, Pakistan
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Mai W, Xiao L, Chen S, Chen S, Li A, Zhang T, He H, Zeng X. Prevalence and contributing factors of malocclusion in Zhuang children aged 7-8 years in southern China. Front Pediatr 2024; 12:1308039. [PMID: 38288319 PMCID: PMC10822886 DOI: 10.3389/fped.2024.1308039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 01/04/2024] [Indexed: 01/31/2024] Open
Abstract
Introduction Malocclusion, a common oral health problem in children, is associated with several contributing factors. This study aimed to investigate the prevalence of mixed dentition stage malocclusion and its contributing factors in Chinese Zhuang children aged 7-8 years. Methods Overall, 2,281 Zhuang children, about 7-8 years old, were randomly selected using a stratified whole-cluster sampling method from schools in counties in Northwestern Guangxi, China. The children were examined on-site for malocclusion and caries by trained dentists, and basic data on the children were collected using questionnaires, including age, sex, parental education, parental accompaniment, and children's knowledge of malocclusion and treatment needs. Data were analyzed using the chi-square test and logistic regression analysis. Results The total prevalence of malocclusion in Zhuang children aged 7-8 years was 58.5%, with the highest prevalence of anterior crossbite tendency, and the prevalence of anterior crossbite and anterior edge-to-edge occlusion was 15.1% and 7.7%, respectively. This was followed by an anterior increased overjet of 13.3% and an inter-incisor spacing of 10.3%. The lowest prevalence was 2.7% for anterior open bite. Sex, parental accompaniment, parental education, and decayed, missing, and filled teeth of the first primary molar were factors that contributed to malocclusion in Zhuang children. Conclusion Malocclusion is a common oral problem among Zhuang children. Therefore, more attention must be paid to the intervention and prevention of malocclusion. The impact factors should be controlled as early as possible.
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Affiliation(s)
- Wenjia Mai
- Department of Orthodontics, College & Hospital of Stomatology, Guangxi Medical University, Nanning, Guangxi, China
| | - Lijuan Xiao
- Department of Orthodontics, College & Hospital of Stomatology, Guangxi Medical University, Nanning, Guangxi, China
| | - Shaoyong Chen
- Department of Dental Public Health, College & Hospital of Stomatology, Guangxi Medical University, Nanning, Guangxi, China
| | - Shuang Chen
- Department of Dental Public Health, College & Hospital of Stomatology, Guangxi Medical University, Nanning, Guangxi, China
| | - Andi Li
- Department of Dental Public Health, College & Hospital of Stomatology, Guangxi Medical University, Nanning, Guangxi, China
| | - Tingting Zhang
- Department of Dental Public Health, College & Hospital of Stomatology, Guangxi Medical University, Nanning, Guangxi, China
| | - Haoyu He
- Department of Dental Public Health, College & Hospital of Stomatology, Guangxi Medical University, Nanning, Guangxi, China
| | - Xiaojuan Zeng
- Department of Dental Public Health, College & Hospital of Stomatology, Guangxi Medical University, Nanning, Guangxi, China
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Yin J, Zhang H, Zeng X, Yu J, Wang H, Jiang Y, Da D, Li Q, Zhang Y. Prevalence and influencing factors of malocclusion in adolescents in Shanghai, China. BMC Oral Health 2023; 23:590. [PMID: 37620836 PMCID: PMC10464309 DOI: 10.1186/s12903-023-03187-5] [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: 04/03/2023] [Accepted: 06/29/2023] [Indexed: 08/26/2023] Open
Abstract
BACKGROUND The main purpose of the study was to investigate the prevalence and related risk factors of malocclusion in permanent dentition among adolescents in Shanghai, and provide basic data for government's preventive strategies and intervention plans. METHODS 1799 adolescents aged 11-15 years old from 18 middle schools in 6 districts of Shanghai were recruited to investigate oral health status and related risk factors using cluster random sampling method in 2021. Malocclusion and caries were examined by on-site inspection. The investigation criteria referred to Bjoerk and the recommendation of the WHO. The malocclusion inspection items included molars relationship, canine relationship, overbite, overjet, midline displacement, anterior crossbite, posterior crossbite, scissors bite, crowding and spacing. The subjects were asked to fill in a questionnaire including parents' education level, oral health behaviors and dietary habits. The chi-square test and logistic regression analysis were used to analyze the relationship between malocclusion and risk factors. RESULTS 1799 adolescents were included in the study and the prevalence of malocclusion in adolescents in Shanghai was 83.5%, and the proportion of molar relationship class I, class II, and class III was 48.9%, 14.7%, and 19.0%, respectively. The most common occlusal characteristic of malocclusion was anterior crowding, followed by midline irregularities and deep overbite, with prevalence rates of 44.8%, 39.0% and 38.6%, respectively. The prevalence rate of adolescents with caries was 34.3%. Those who had dental caries and preferred soft food were more likely to have abnormal occlusal characteristics (p < 0.05). CONCLUSION The prevalence of malocclusion in adolescents in Shanghai is high, so it is of great significance to strengthen oral health education, allocate proper preventive strategies and carry out the early correction if necessary.
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Affiliation(s)
- Jiaming Yin
- Department of Preventive Dentistry, Shanghai Stomatological Hospital, Fudan University, 356 East Beijing Rd, Shanghai, 200001, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Hao Zhang
- Department of Preventive Dentistry, Shanghai Stomatological Hospital, Fudan University, 356 East Beijing Rd, Shanghai, 200001, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Xiaoli Zeng
- Department of Preventive Dentistry, Shanghai Stomatological Hospital, Fudan University, 356 East Beijing Rd, Shanghai, 200001, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Jin Yu
- Department of Preventive Dentistry, Shanghai Stomatological Hospital, Fudan University, 356 East Beijing Rd, Shanghai, 200001, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Huning Wang
- Department of Preventive Dentistry, Shanghai Stomatological Hospital, Fudan University, 356 East Beijing Rd, Shanghai, 200001, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Yiwei Jiang
- Department of Preventive Dentistry, Shanghai Stomatological Hospital, Fudan University, 356 East Beijing Rd, Shanghai, 200001, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Dongxin Da
- Department of Preventive Dentistry, Shanghai Stomatological Hospital, Fudan University, 356 East Beijing Rd, Shanghai, 200001, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Qiang Li
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China.
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, 356 East Beijing Rd, Shanghai, 200001, China.
| | - Ying Zhang
- Department of Preventive Dentistry, Shanghai Stomatological Hospital, Fudan University, 356 East Beijing Rd, Shanghai, 200001, China.
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China.
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Shi Y, Zhang N, Liu J, Wang J, Shen S, Zhang J, An X, Si Q. Preparation of Nanocomposites for Antibacterial Orthodontic Invisible Appliance Based on Piezoelectric Catalysis. SENSORS (BASEL, SWITZERLAND) 2023; 23:s23115336. [PMID: 37300063 DOI: 10.3390/s23115336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/28/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023]
Abstract
Compared to fixed orthodontic appliances with brackets, thermoplastic invisible orthodontic aligners offer several advantages, such as high aesthetic performance, good comfort, and convenient oral health maintenance, and are widely used in orthodontic fields. However, prolonged use of thermoplastic invisible aligners may lead to demineralization and even caries in most patients' teeth, as they enclose the tooth surface for an extended period. To address this issue, we have created PETG composites that contain piezoelectric barium titanate nanoparticles (BaTiO3NPs) to obtain antibacterial properties. First, we prepared piezoelectric composites by incorporating varying amounts of BaTiO3NPs into PETG matrix material. The composites were then characterized using techniques such as SEM, XRD, and Raman spectroscopy, which confirmed the successful synthesis of the composites. We cultivated biofilms of Streptococcus mutans (S. mutans) on the surface of the nanocomposites under both polarized and unpolarized conditions. We then activated piezoelectric charges by subjecting the nanocomposites to 10 Hz cyclic mechanical vibration. The interactions between the biofilms and materials were evaluated by measuring the biofilm biomass. The addition of piezoelectric nanoparticles had a noticeable antibacterial effect on both the unpolarized and polarized conditions. Under polarized conditions, nanocomposites demonstrated a greater antibacterial effect than under unpolarized conditions. Additionally, as the concentration of BaTiO3NPs increased, the antibacterial rate also increased, with the surface antibacterial rate reaching 67.39% (30 wt% BaTiO3NPs). These findings have the potential for application in wearable, invisible appliances to improve clinical services and reduce the need for cleaning methods.
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Affiliation(s)
- Yingying Shi
- School of Stomatology, Lanzhou University, Lanzhou 730030, China
| | - Ningning Zhang
- School of Stomatology, Lanzhou University, Lanzhou 730030, China
| | - Jiajie Liu
- School of Stomatology, Lanzhou University, Lanzhou 730030, China
| | - Junbin Wang
- School of Stomatology, Lanzhou University, Lanzhou 730030, China
| | - Shuhui Shen
- School of Stomatology, Lanzhou University, Lanzhou 730030, China
| | - Jingxiang Zhang
- School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730030, China
| | - Xiaoli An
- School of Stomatology, Lanzhou University, Lanzhou 730030, China
| | - Qingzong Si
- School of Stomatology, Lanzhou University, Lanzhou 730030, China
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An Anthropological Investigation of the Sociocultural and Economic Forces Shaping Dental Crowding Prevalence. Arch Oral Biol 2023; 147:105614. [PMID: 36706662 DOI: 10.1016/j.archoralbio.2023.105614] [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: 06/28/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 01/09/2023]
Abstract
OBJECTIVE The aim of the current study is to explore country of origin and social race category differences in dental crowding prevalence through an anthropological approach. DESIGN Data were collected from individuals within five countries (Australia, China, Japan, South Africa, United States; n = 1008) and seven social race groups in two countries (American Black, American White, Latinx, and Indigenous in the United States, South African Black, South African White, and South African Coloured; n = 654). Statistical significance between groups was assessed with a Kruskal-Wallis test, while a Dunn's post-hoc test identified which groups significantly differed. RESULTS Results indicate South Africa is characterized by the lowest frequencies of dental crowding, with Coloured South Africans yielding the highest and Black South Africans displaying the lowest frequencies. Individuals in the United States exhibited relatively high levels of minor dental crowding. American Blacks had lower crowding levels, while the Indigenous group had high levels of severe crowding. Individuals within China and Japan exhibited higher relative prevalence of severe crowding. CONCLUSIONS Overall, significant differences exist in dental crowding prevalence across countries and social race categories using an anthropological grading system to assess crowding. These differences are likely impacted by sociocultural (aesthetic preferences) and economic (access to dental care) factors.
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Yao S, Zhou X, Vona B, Fan L, Zhang C, Li D, Yuan H, Du Y, Ma L, Pan Y. Skeletal Class III Malocclusion Is Associated with ADAMTS2 Variants and Reduced Expression in a Familial Case. Int J Mol Sci 2022; 23:ijms231810673. [PMID: 36142585 PMCID: PMC9505033 DOI: 10.3390/ijms231810673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/07/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
Skeletal Class III malocclusion with maxillary deficiency is a severe maxillofacial disease with unclear pathogenic mechanisms. We recruited a Han Chinese family who was clinically diagnosed with skeletal Class III malocclusion and maxillary deficiency. Using whole exome sequencing, a missense variant in ADAMTS2 (NM_014244: c.3506G>T: p.G1169V) was identified and predicted as deleterious by in silico tools. We also found ADAMTS2 variants associated with deficient maxillary development in a cohort. ADAMTS2 expression in HEK293 cells showed significant decrease due to the variant, which was also consistent in dental pulp stem cells from the proband and a healthy control. In the adamts2-knockdown zebrafish model, the length and width of the ethmoid plate, as well as the length of the palatoquadrate became significantly shorter than the control group (p < 0.001), while there was no significant difference in the length and width of the mandible. The expression of Sox3, which was required in early embryonic craniofacial development, was significantly downregulated in the adamts2-knockdown zebrafish embryos. Bioinformatic and cellular studies showed that the decreased expression of ADAMTS2 may inhibit downstream ErbB signaling pathway transduction and restrain subsequent osteogenesis in human adult mesenchymal stromal cells. Collectively, these data showed that ADAMTS2 (c.3506G>T: p.G1169V) may confer susceptibility to risk of skeletal Class III malocclusion with maxillary deficiency.
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Affiliation(s)
- Siyue Yao
- Department of Orthodontics, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
- The Affiliated Stomatology Hospital of Suzhou Vocational Health College, Suzhou 215000, China
| | - Xi Zhou
- Department of Orthodontics, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
| | - Barbara Vona
- Institute of Human Genetics, University Medical Center Göttingen, 37073 Göttingen, Germany
- Institute for Auditory Neuroscience and Inner Ear Lab, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Liwen Fan
- Department of Orthodontics, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
| | - Chengcheng Zhang
- Department of Orthodontics, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
| | - Dandan Li
- Department of Orthodontics, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
| | - Hua Yuan
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
- Department of Oral and Maxillofacial Surgery, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
| | - Yifei Du
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
- Department of Oral and Maxillofacial Surgery, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
| | - Lan Ma
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
- Correspondence: (L.M.); (Y.P.); Tel.: +86-25-86862025 (L.M. & Y.P.); Fax: +86-25-86862823 (L.M. & Y.P.)
| | - Yongchu Pan
- Department of Orthodontics, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing 210000, China
- Correspondence: (L.M.); (Y.P.); Tel.: +86-25-86862025 (L.M. & Y.P.); Fax: +86-25-86862823 (L.M. & Y.P.)
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10
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Prevalence of Orthodontic Malocclusions in Healthy Children and Adolescents: A Systematic Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19127446. [PMID: 35742703 PMCID: PMC9223594 DOI: 10.3390/ijerph19127446] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 06/09/2022] [Accepted: 06/14/2022] [Indexed: 12/04/2022]
Abstract
The purpose of this study was to systematically review the literature regarding the prevalence of malocclusion and different orthodontic features in children and adolescents. Methods: The digital databases PubMed, Cochrane, Embase, Open Grey, and Web of Science were searched from inception to November 2021. Epidemiological studies, randomized controlled trials, clinical trials, and comparative studies involving subjects ≤ 18 years old and focusing on the prevalence of malocclusion and different orthodontic features were selected. Articles written in English, Dutch, French, German, Spanish, and Portuguese were included. Three authors independently assessed the eligibility, extracted the data from, and ascertained the quality of the studies. Since all of the included articles were non-randomized, the MINORS tool was used to score the risk of bias. Results: The initial electronic database search identified a total of 6775 articles. After the removal of duplicates, 4646 articles were screened using the title and abstract. A total of 415 full-text articles were assessed, and 123 articles were finally included for qualitative analysis. The range of prevalence of Angle Class I, Class II, and Class III malocclusion was very large, with a mean prevalence of 51.9% (SD 20.7), 23.8% (SD 14.6), and 6.5% (SD 6.5), respectively. As for the prevalence of overjet, reversed overjet, overbite, and open bite, no means were calculated due to the large variation in the definitions, measurements, methodologies, and cut-off points among the studies. The prevalence of anterior crossbite, posterior crossbite, and crossbite with functional shift were 7.8% (SD 6.5), 9.0% (SD 7.34), and 12.2% (SD 7.8), respectively. The prevalence of hypodontia and hyperdontia were reported to be 6.8% (SD 4.2) and 1.8% (SD 1.3), respectively. For impacted teeth, ectopic eruption, and transposition, means of 4.9% (SD 3.7), 5.4% (SD 3.8), and 0.5% (SD 0.5) were found, respectively. Conclusions: There is an urgent need to clearly define orthodontic features and malocclusion traits as well as to reach consensus on the protocols used to quantify them. The large variety in methodological approaches found in the literature makes the data regarding prevalence of malocclusion unreliable.
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Zhang X, Zheng J, Deng J, Wen Z, Chen Z, Gan L, Wu L. Three-dimensional evaluation of soft tissues in hyperdivergent skeletal class II females in Guangdong. BMC Med Imaging 2022; 22:56. [PMID: 35351027 PMCID: PMC8966193 DOI: 10.1186/s12880-022-00782-w] [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: 10/27/2021] [Accepted: 03/23/2022] [Indexed: 11/10/2022] Open
Abstract
Objectives To establish the three-dimensional facial soft tissue morphology of adolescent and adult females in the Guangdong population and to study the morphological characteristics of hyperdivergent skeletal class II females in Guangdong compared with that of normodivergent class I groups. Materials and methods The 3dMDface system was used to capture face scans of 160 patients, including 45 normal and 35 hyperdivergent skeletal class II adolescents (aged 11–14 years old) and 45 normal and 35 hyperdivergent skeletal class II adults (aged 18–30 years old). Thirty-two soft tissue landmarks were mapped, and 21 linear, 10 angular and 17 ratio measurements were obtained by 3dMDvultus analysis software. Data were assessed with a t-test of two independent samples between the normal adolescent and adult groups and between the normal and hyperdivergent skeletal class II groups. Results The linear measurements of the Guangdong adult females were larger than those of the adolescents in both Class I and Class II groups. However, the angular and ratio measurements had no significant difference. The vertical linear measurements were higher and the sagittal and transverse linear measurements were smaller in the hyperdivergent class II group (p < 0.05). The soft tissue ANB angle, chin-lip angle, and mandibular angle were significantly larger and the soft tissue facial convexity angle and nasal convexity angle were significantly smaller in the hyperdivergent class II group (p < 0.05). Additionally, there were significant differences in the ratio measurements between the hyperdivergent class II groups and the control groups (p < 0.05). Conclusions The three-dimensional facial morphology of Guangdong adolescent and adult females was acquired. The facial soft tissue measurements of the adults were higher in the three dimensions except for the facial convexity and proportional relationships which were similar, suggesting that the growth pattern remained the same. The three-dimensional facial soft tissue features of hyperdivergent skeletal class II were characterized by the terms “long, convex, and narrow”. Three-dimensional facial measurements can reflect intrinsic hard tissue characteristics. Supplementary Information The online version contains supplementary material available at 10.1186/s12880-022-00782-w.
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Affiliation(s)
- Xueqin Zhang
- Hospital of Stomatology, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Stomatology; Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510055, People's Republic of China.,Department of Stomatology, Shenzhen Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518106, People's Republic of China
| | - Jinxuan Zheng
- Hospital of Stomatology, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Stomatology; Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510055, People's Republic of China.
| | - Jianqing Deng
- Department of Stomatology, The Eighth Affiliated Hospital Sun Yat-Sen University, Shenzhen, 518000, People's Republic of China
| | - Zhaoxiang Wen
- Hospital of Stomatology, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Stomatology; Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510055, People's Republic of China
| | - Zhengyuan Chen
- Hospital of Stomatology, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Stomatology; Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510055, People's Republic of China
| | - Liyi Gan
- Hospital of Stomatology, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Stomatology; Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510055, People's Republic of China
| | - Liping Wu
- Hospital of Stomatology, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Stomatology; Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, 510055, People's Republic of China.
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Tong X, Li Y, Yang G, Zhang H, Jiang Y, Yu J, Da D, Zeng X, Liu Y. The Association of Tonsil Hypertrophy with Pediatric Dentofacial Development: Evidence from a Cross-Sectional Study of Young Children in Shanghai, China. Nat Sci Sleep 2022; 14:1867-1875. [PMID: 36284857 PMCID: PMC9588286 DOI: 10.2147/nss.s381020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 09/12/2022] [Indexed: 11/07/2022] Open
Abstract
PURPOSE The prevalence of dentofacial deformity was reportedly higher than decades ago, to which upper airway (UA) obstruction-induced sleep-disordered breathing (SDB) might contribute a lot. Tonsil hypertrophy appears relatively common in the population of young children. Given that the association between tonsil hypertrophy and pediatric dentofacial deformity remained controversial, this cross-sectional research was designed to explore the internal relationship of those among young children in Shanghai, China. PATIENTS AND METHODS A stratified cluster sampling procedure was adopted, and a representative sample of 715 young children (8-10 years old) was recruited. The OSA-18 quality-of-life questionnaires (OSA-18) were finished by their guardians, and well-trained orthodontists performed the oral examinations. After collecting the valuable information, the descriptions and analyses were run by statistical software (SPSS, version 26.0). RESULTS 715 participants (334 boys and 381 girls) were involved in the analyses. As calculated, the current prevalence of malocclusion identified by Angle's classification was 45.6% in this sample. No evident relation between OSA-18 scores and dentofacial abnormalities (P > 0.05) was found. With the enlargement of tonsil size, the proportion of children with triangular dental arch form (P < 0.05) and high vault palate (P < 0.001) was increasingly higher. More children with protruding profiles and fewer upright profiles were observed as the tonsil size increased, although it did not show a statistical difference (P = 0.103). CONCLUSION Dental and craniofacial growth deficiency has become more prevalent among children, demanding more concerns from health authorities. Tonsil hypertrophy plays an essential role in the direction of dentofacial development. More efforts from local health authorities should be made to enhance public propaganda and education on the prevention and interruption of tonsil hypertrophy and related dentofacial abnormalities.
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Affiliation(s)
- Xianqin Tong
- Department of Orthodontics, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, People's Republic of China
| | - Yuanyuan Li
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, People's Republic of China.,Department of Preventive Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, People's Republic of China
| | - Gang Yang
- Department of Orthodontics, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, People's Republic of China
| | - Hao Zhang
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, People's Republic of China.,Department of Pediatric Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, People's Republic of China
| | - Yiwei Jiang
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, People's Republic of China.,Department of Pediatric Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, People's Republic of China
| | - Jin Yu
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, People's Republic of China.,Department of Pediatric Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, People's Republic of China
| | - Dongxin Da
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, People's Republic of China.,Department of Pediatric Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, People's Republic of China
| | - Xiaoli Zeng
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, People's Republic of China.,Department of Pediatric Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, People's Republic of China
| | - Yuehua Liu
- Department of Orthodontics, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, People's Republic of China
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He Y, Wang Y, Wang X, Wang J, Bai D, Guo Y. Nonsurgical treatment of a hyperdivergent skeletal Class III patient with mini-screw-assisted mandibular dentition distalization and flattening of the occlusal plane. Angle Orthod 2021; 92:287-293. [PMID: 34874988 DOI: 10.2319/040521-272.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 10/01/2021] [Indexed: 11/23/2022] Open
Abstract
Treatment of hyperdivergent skeletal Class III malocclusion is challenging for orthodontists, and orthognathic-orthodontic treatment is usually required. This report presents the successful nonsurgical treatment of a 20-year-old man who had a skeletal Class III malocclusion with anterior open bite, anterior and posterior crossbite, hyperdivergent growth pattern, steep occlusal plane, early loss of three first molars, and an uncommon convex profile with a retruded chin. An orthodontic camouflage treatment plan was chosen based on the etiology and the patient's complaints. Tooth #37 was extracted. Miniscrews were used for uprighting and intruding of the lower molars, distalization of the lower dentition, and flattening of the occlusal plane. After 34 months of active treatment, Class I relationships, proper anterior overjet and overbite, flat occlusal plane, and an esthetic facial profile were achieved. The results demonstrated that the biomechanics involved in the nonsurgical treatment assisted with miniscrews to distalize the mandibular dentition and flatten the occlusal plane while keeping the mandibular plane stable was effective for treating this hyperdivergent skeletal Class III patient with a convex profile and anterior open bite.
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de Frutos-Valle L, Martín C, Alarcón JA, Palma-Fernández JC, Ortega R, Iglesias-Linares A. Novel Sub-Clustering of Class III Skeletal Malocclusion Phenotypes in a Southern European Population Based on Proportional Measurements. J Clin Med 2020; 9:E3048. [PMID: 32971753 PMCID: PMC7565379 DOI: 10.3390/jcm9093048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/05/2020] [Accepted: 09/16/2020] [Indexed: 01/10/2023] Open
Abstract
Current phenotypic characterizations of Class III malocclusion are influenced more by gender or ethnic origin than by raw linear skeletal measurements. The aim of the present research is to develop a Class III skeletal malocclusion sub-phenotype characterization based on proportional cranial measurements using principal component analysis and cluster analysis. Radiometric data from 212 adult subjects (115 women and 96 men) of southern European origin affected by Class III skeletal malocclusion were analyzed. A total of 120 measurements were made, 26 were proportional skeletal measurements, which were used to perform principal component analysis and subsequent cluster analysis. The remaining 94 supplementary measurements were used for a greater description of the identified clusters. Principal component analysis established eight principal components that explained 85.1% of the total variance. The first three principal components explained 51.4% of the variance and described mandibular proportions, anterior facial height proportions, and posterior-anterior cranial proportions. Cluster analysis established four phenotypic subgroups, representing 18.4% (C1), 20.75% (C2), 38.68% (C3), and 22.17% (C4) of the sample. A new sub-clustering of skeletal Class III malocclusions that avoids gender influence is provided. Our results improve clinicians' resources for Class III malocclusion and could improve the diagnostic and treatment approaches for this malocclusion.
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Affiliation(s)
- Leixuri de Frutos-Valle
- Section of Orthodontics, Faculty of Odontology, Complutense University, 28040 Madrid, Spain; (L.d.F.V.); or
| | - Conchita Martín
- Section of Orthodontics, Faculty of Odontology, Complutense University, 28040 Madrid, Spain; (L.d.F.V.); or
- BIOCRAN (Craniofacial Biology) Research Group, Complutense University, 28040 Madrid, Spain
| | - José Antonio Alarcón
- Section of Orthodontics, Faculty of Odontology, University of Granada, 18071 Granada, Spain;
- BIOCRAN (Craniofacial Biology) Research Group, Complutense University, 28040 Madrid, Spain
| | | | - Ricardo Ortega
- Section of Radiology, Faculty of Odontology, Complutense University, 28040 Madrid, Spain;
| | - Alejandro Iglesias-Linares
- Section of Orthodontics, Faculty of Odontology, Complutense University, 28040 Madrid, Spain; (L.d.F.V.); or
- BIOCRAN (Craniofacial Biology) Research Group, Complutense University, 28040 Madrid, Spain
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