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Zhang T, Gao X, Huang C, Su S, Lin X, Yin L, Bi Q, Fan Y, Lin J, Wei J, Liu Y, Chai L, Xu M, Chen X, Zhong W, Yang X, Zhang Q, Gao J, Wang Z, Liu Z. Digital measurement of deciduous tooth dimensions in China: A cross-sectional survey. Arch Oral Biol 2024; 163:105941. [PMID: 38599038 DOI: 10.1016/j.archoralbio.2024.105941] [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: 11/22/2023] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 04/12/2024]
Abstract
OBJECTIVE Crown dimensions data of deciduous teeth hold anthropological, forensic, and archaeological value. However, such information remains scarce for the Chinese population. This multi-center study aimed to collect a large sample of deciduous crown data from Chinese children using three-dimensional measurement methods and to analyze their dimensions. DESIGN A total of 1592 children's deciduous dentition samples were included, and the sample size was distributed according to Northeast, North, East, Northwest, Southwest and South China. Digital dental models were reconstructed from plaster dental models. Independent sample t test, paired t test, principal component analysis (PCA), and factor analysis (FA) were used to analyze the tooth crown dimensions. RESULT 18,318 deciduous teeth from 1592 children were included. Males exhibited slightly larger values than females. The range of sexual dimorphism percentages for each measurement was as follows: mesiodistal diameter (0.40-2.08), buccolingual diameter (0.13-2.24), and maxillogingival diameter (0.48-3.37). The FA results showed that the main trend of crown dimensions changes was the simultaneous increase or decrease in mesiodistal diameter, buccolingual diameter and maxillogingival diameter in three directions. CONCLUSION This is the first large-scale survey of deciduous tooth crown dimensions in China, which supplements the data of deciduous tooth measurement and provides a reference for clinical application.
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Affiliation(s)
- Tianyi Zhang
- Department of Stomatology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China; Department of Orthodontics, School of Dentistry, Kyungpook National University, Daegu, South Korea
| | - Xiaoli Gao
- Department of Stomatology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Chao Huang
- Department of Stomatology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Shenping Su
- Department of Stomatology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Xiaoping Lin
- Department of Stomatology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Lijun Yin
- Specialist Out-patient Department, Stomatology Branch of Dandong Central Hospital, Dandong, Liaoning, China
| | - Qingwei Bi
- Department of Dental Implantology, Heilongjiang Stomatological Disease Center, Haerbin, China
| | - YongJie Fan
- Department of Stomatology, The Fourth Affiliated Hospital of Inner Mongolia Medical University, Baotou, China
| | - Jiang Lin
- Department of Stomatology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Jianming Wei
- Department of Stomatology, Cangzhou Central Hospital, Cangzhou, China
| | - Yingping Liu
- Department of Stomatology, Children's Hospital of Shanxi, Taiyuan, Shanxi, China
| | - Lin Chai
- School of Stomatology, Wannan Medical College, Wuhu, China
| | - Mingyan Xu
- Department of Dental Implantology, Stomatological Hospital of Xiamen Medical College, Xiamen, China
| | - Xiaotao Chen
- Department of Stomatology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Wenyi Zhong
- Department of Pediatric Dentistry, Hospital/School of Stomatology, Zunyi Medical University, Zunyi, China
| | - Xianghong Yang
- Department of Stomatology, Kunming Yan'an Hospital, China
| | - Qingbin Zhang
- Department of Temporomandibular Joint, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, China
| | - Jing Gao
- Beijing Dongbo Dental Handpiece Co., Ltd., Beijing, China
| | - Zuomin Wang
- Department of Stomatology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China.
| | - Zhiqiang Liu
- Department of Stomatology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China.
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Gao Y, Gu Y, Dessel JV, Lübbers HT, Tian L, Politis C, Bila M, Willaert R, Chen X, Sun Y. OrthoCalc: The six degrees of freedom measurement workflow of rotational and displacement changes for maxilla positioning evaluation. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2024; 247:108083. [PMID: 38402715 DOI: 10.1016/j.cmpb.2024.108083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/12/2024] [Accepted: 02/15/2024] [Indexed: 02/27/2024]
Abstract
BACKGROUND This study is undertaken to establish the accuracy and reliability of OrthoCalc, a 3D application designed for the evaluation of maxillary positioning. METHODS We registered target virtual planned models, maxillary models from pre-operative and post-operative CT scans, and post-operative intra-oral scans to a common reference system, allowing for digital evaluation. To assess rotational changes, we introduced a novel measurement method based on virtual cuboid models. Displacement errors were calculated based on proposed registration matrices. We also compared OrthoCalc to established commercial medical software as a benchmark. RESULTS Statistical significance calculated showed no significant differences between OrthoCalc and commercial software. the biggest error of 0.04 degree in rotation change was found in the yaw. A maximum displacement change of 0.75 mm was found in the X direction. CONCLUSIONS Our study validates OrthoCalc as a precise and reliable tool for assessing maxillary position changes with six degrees of freedom in orthognathic surgery, endorsing its clinical utility.
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Affiliation(s)
- Yao Gao
- The Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Belgium
| | - Yifei Gu
- The Fourth Affiliated Hospital of Soochow University, PR China
| | - Jeroen Van Dessel
- The Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Belgium
| | - Heinz-Theo Lübbers
- Clinic for Cranio-Maxillofacial Surgery, University Hospital of Zurich, Frauenklinikstrasse 24, Zurich CH-8091, Switzerland; Harvard Medical School, Brigham and Women's Hospital, Surgical Planning Laboratory, Francis Street 75, Boston, MA 02115, USA
| | - Lei Tian
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, 145 West Changle Road, Xi'an 710032, PR China
| | - Constantinus Politis
- The Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Belgium
| | - Michel Bila
- The Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Belgium
| | - Robin Willaert
- The Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Belgium
| | - Xiaojun Chen
- Institute of Biomedical Manufacturing and Life Quality Engineering, State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, PR China; Institute of Medical Robotics, Shanghai Jiao Tong University, Shanghai, PR China
| | - Yi Sun
- The Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Belgium.
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Petrović V, Šlaj M, Buljan M, Čivljak T, Zulijani A, Perić B. Comparison of Tooth Size Measurements in Orthodontics Using Conventional and 3D Digital Study Models. J Clin Med 2024; 13:730. [PMID: 38337424 PMCID: PMC10856778 DOI: 10.3390/jcm13030730] [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: 12/28/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 02/12/2024] Open
Abstract
(1) Background: The objective of this study was to assess which digitization method produces the biggest deviation in the 3D images of tooth size from plaster models made using alginate impressions, which are considered the gold standard in orthodontics. (2) Methods: The sample used in this study included 30 subjects (10 males and 20 females). Measurements were made on four types of models: (1) digital models obtained through intraoral scanning and digitized models of plaster cast made from (2) alginate impressions, (3) silicone impressions, and (4) conventional plaster models. Mesio-distal (MD) and buccal/labial-lingual/palatal (BL) dimensions were measured on the reference teeth of the right side of the jaw (central incisor, canine, first premolar, and first molar). Comparisons of tooth size between the methods were conducted using a repeated measurement analysis of variance and the Friedman test, while the intraclass correlation coefficient was used to determine agreement between the different methods. (3) Results: The results showed a similar level of agreement between the conventional and digital models in both jaws and the anterior, middle, and posterior segments. Better agreement was found for the MD measurements (r = 0.337-0.798; p ≤ 0.05) compared to the BL measurements (r = 0.016-0.542), with a smaller mean difference for MD (0.001-0.50 mm) compared to BL (0.02-1.48 mm) and a smaller measurement error for MD (0.20-0.39) compared to BL (0.38-0.89). There was more frequently a better level of agreement between 3D images than measurements made using a digital caliper on the plaster models with 3D images. (4) Conclusions: The differences in measurements between the digital models and conventional plaster models were small and clinically acceptable.
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Affiliation(s)
| | - Martina Šlaj
- School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia; (M.Š.); (B.P.)
| | - Mia Buljan
- General Hospital ‘Dr Josip Benčević’, 35000 Slavonski Brod, Croatia;
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- Department of Oral Surgery, Clinical Hospital Center Rijeka, 51000 Rijeka, Croatia
- Department of Dental Medicine, Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
| | - Berislav Perić
- School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia; (M.Š.); (B.P.)
- Department of Oral and Maxillofacial Surgery, University Hospital Dubrava, 10000 Zagreb, Croatia
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