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Li CX, Liu X, Gong ZC, Jumatai S, Ling B. Morphologic Analysis of Condyle among Different Disc Status in the Temporomandibular Joints by Three-dimensional Reconstructive Imaging: A Preliminary Study. BMC Oral Health 2022; 22:395. [PMID: 36096796 PMCID: PMC9465965 DOI: 10.1186/s12903-022-02438-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 09/07/2022] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVES Morphological study is a common approach in the field of anterior disc displacement (ADD) pathology; however, analysis based on three-dimensional reconstructive imaging has not been investigated. This study investigated the association between ADD and the status of the mandibular condyle and articular fossa. METHODS Thirty-four patients were divided into three groups: normal articular disc position (NADP), anterior disc displacement with reduction (ADDwR), and anterior disc displacement without reduction (ADDwoR). Multiple grouped comparisons of three different disc statuses were performed by Kruskal-Wallis H test and variance analysis respectively. Receiver-operating characteristic curve was plotted to assess the diagnostic efficacy of the morphological parameters. Multivariate logistic regression analysis was used to investigate the interfering factors of ADD. RESULTS The condylar volume (CV) and condylar superficial area (CSA) in the NADP, ADDwR, and ADDwoR groups exhibited obvious changes (P < 0.05). Both CV and superior joint space (SJS) presented a good diagnostic accuracy for NADP-ADDwoR [area under the curve (AUC)CV = 0.813; AUCSJS = 0.855)], and ADDwR-ADDwoR (AUCCV = 0.858; AUCSJS = 0.801). CSA presented a good diagnostic accuracy for ADDwR-ADDwoR (AUC = 0.813). A multivariate logistic ordinal regression model showed that the CV [odds ratio (OR) = 1.011; regression coefficient (RC) = 0.011, P = 0.018], SJS (OR, 8.817; RC = 2.177; P < 0.001), and medial joint space (MJS) (OR, 1.492; RC = 0.400; P = 0.047) had a significantly impact on the groups. CONCLUSION CV, CSA, SJS, and MJS were significantly associated with the different disc status, and the condyle in ADD exhibited 3-dimensionally altered dimensions. They could be considered as promising biometric markers to assess the ADD.
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Affiliation(s)
- Chen-Xi Li
- Oncological Department of Oral and Maxillofacial Surgery, Xinjiang Medical University Affiliated First Hospital, No.137 Liyushan South Road, Urumqi, 830054, People's Republic of China. .,School of Stomatology, Xinjiang Medical University, Urumqi, 830011, People's Republic of China. .,Stomatological Research Institute of Xinjiang Uygur Autonomous Region, Urumqi, 830054, People's Republic of China.
| | - Xu Liu
- Oncological Department of Oral and Maxillofacial Surgery, Xinjiang Medical University Affiliated First Hospital, No.137 Liyushan South Road, Urumqi, 830054, People's Republic of China.,School of Stomatology, Xinjiang Medical University, Urumqi, 830011, People's Republic of China.,Stomatological Research Institute of Xinjiang Uygur Autonomous Region, Urumqi, 830054, People's Republic of China
| | - Zhong-Cheng Gong
- Oncological Department of Oral and Maxillofacial Surgery, Xinjiang Medical University Affiliated First Hospital, No.137 Liyushan South Road, Urumqi, 830054, People's Republic of China. .,School of Stomatology, Xinjiang Medical University, Urumqi, 830011, People's Republic of China. .,Stomatological Research Institute of Xinjiang Uygur Autonomous Region, Urumqi, 830054, People's Republic of China.
| | - Sakendeke Jumatai
- Department of Oral and Maxillofacial Radiology, Xinjiang Medical University Affiliated First Hospital, Urumqi, 830054, People's Republic of China.,School of Stomatology, Xinjiang Medical University, Urumqi, 830011, People's Republic of China.,Stomatological Research Institute of Xinjiang Uygur Autonomous Region, Urumqi, 830054, People's Republic of China
| | - Bin Ling
- Oncological Department of Oral and Maxillofacial Surgery, Xinjiang Medical University Affiliated First Hospital, No.137 Liyushan South Road, Urumqi, 830054, People's Republic of China.,School of Stomatology, Xinjiang Medical University, Urumqi, 830011, People's Republic of China.,Stomatological Research Institute of Xinjiang Uygur Autonomous Region, Urumqi, 830054, People's Republic of China
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2
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Yu W, Gu Q, Wu D, Zhang W, Li G, Lin L, Lowe JM, Hu S, Li TW, Zhou Z, Miao MZ, Gong Y, Zhao Y, Lu E. Identification of potentially functional circRNAs and prediction of circRNA-miRNA-mRNA regulatory network in periodontitis: Bridging the gap between bioinformatics and clinical needs. J Periodontal Res 2022; 57:594-614. [PMID: 35388494 PMCID: PMC9325354 DOI: 10.1111/jre.12989] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 03/19/2022] [Accepted: 03/23/2022] [Indexed: 02/06/2023]
Abstract
Background and Objective Periodontitis is a multifactorial chronic inflammatory disease that can lead to the irreversible destruction of dental support tissues. As an epigenetic factor, the expression of circRNA is tissue‐dependent and disease‐dependent. This study aimed to identify novel periodontitis‐associated circRNAs and predict relevant circRNA‐periodontitis regulatory network by using recently developed bioinformatic tools and integrating sequencing profiling with clinical information for getting a better and more thorough image of periodontitis pathogenesis, from gene to clinic. Material and Methods High‐throughput sequencing and RT‐qPCR were conducted to identify differentially expressed circRNAs in gingival tissues from periodontitis patients. The relationship between upregulated circRNAs expression and probing depth (PD) was performed using Spearman's correlation analysis. Bioinformatic analyses including GO analysis, circRNA‐disease association prediction, and circRNA‐miRNA‐mRNA network prediction were performed to clarify potential regulatory functions of identified circRNAs in periodontitis. A receiver‐operating characteristic (ROC) curve was established to assess the diagnostic significance of identified circRNAs. Results High‐throughput sequencing identified 70 differentially expressed circRNAs (68 upregulated and 2 downregulated circRNAs) in human periodontitis (fold change >2.0 and p < .05). The top five upregulated circRNAs were validated by RT‐qPCR that had strong associations with multiple human diseases, including periodontitis. The upregulation of circRNAs were positively correlated with PD (R = .40–.69, p < .05, moderate). A circRNA‐miRNA‐mRNA network with the top five upregulated circRNAs, differentially expressed mRNAs, and overlapped predicted miRNAs indicated potential roles of circRNAs in immune response, cell apoptosis, migration, adhesion, and reaction to oxidative stress. The ROC curve showed that circRNAs had potential value in periodontitis diagnosis (AUC = 0.7321–0.8667, p < .05). Conclusion CircRNA‐disease associations were predicted by online bioinformatic tools. Positive correlation between upregulated circRNAs, circPTP4A2, chr22:23101560‐23135351+, circARHGEF28, circBARD1 and circRASA2, and PD suggested function of circRNAs in periodontitis. Network prediction further focused on downstream targets regulated by circRNAs during periodontitis pathogenesis.
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Affiliation(s)
- Weijun Yu
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Qisheng Gu
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China.,Department of Immunology, Bio Sorbonne Paris Cité, University of Paris, Paris, France
| | - Di Wu
- Division of Oral and Craniofacial Biomedicine, University of North Carolina Adams School of Dentistry, Chapel Hill, North Carolina, USA.,Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Weiqi Zhang
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Gang Li
- Department of Genome Sciences, University of Washington, Seattle, Washington, USA
| | - Lu Lin
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jared M Lowe
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Shucheng Hu
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Tia Wenjun Li
- Division of Oral and Craniofacial Biomedicine, University of North Carolina Adams School of Dentistry, Chapel Hill, North Carolina, USA.,Gene Therapy Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Zhen Zhou
- Center for Biomedical Image Computing and Analytics, Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Michael Z Miao
- Division of Oral and Craniofacial Biomedicine, University of North Carolina Adams School of Dentistry, Chapel Hill, North Carolina, USA
| | - Yuhua Gong
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yifei Zhao
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Eryi Lu
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
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Chen CM, Yu TY, Chou ST, Cheng JH, Chen SC, Pan CY, Tseng YC. Changes in Tongue Area, Pharyngeal Area, and Pharyngeal Airway Velocity after Correction of Mandibular Prognathism. J Clin Med 2021; 10:jcm10194560. [PMID: 34640582 PMCID: PMC8509434 DOI: 10.3390/jcm10194560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/19/2021] [Accepted: 09/24/2021] [Indexed: 02/05/2023] Open
Abstract
This study aimed to investigate the correlation between the amount of mandibular setback, and the related changes of the tongue area, pharyngeal area, and pharyngeal airflow velocity. Twenty-five patients treated for mandibular prognathism, and serial cephalograms were obtained (T1: preoperation, T2: more than one year postoperation). The postoperative area of the tongue, pharyngeal airway space, and pharyngeal airflow velocity were investigated. Statistical analysis was performed with the Student t-test and Pearson correlation. The amount of mandible setback was significant after surgery (12.8 mm; p < 0.001). The pharyngeal area was significantly reduced 115.5 mm2 (p = 0.046). There was a slight reduction of the tongue area (43.2 mm2; p = 0.305) and an increase of pharyngeal airflow velocity (0.3 m/s; p = 0.133). The Pearson correlation coefficient test showed no statistical significance among the amount of horizontal setback and vertical movement of the mandible, such as the reductions in the tongue area, the pharyngeal airway space, and the increase in pharyngeal airflow velocity. Larger amounts of mandibular setback caused a significant reduction of pharyngeal airway area, but without significant changes of the tongue area and pharyngeal airflow velocity.
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Affiliation(s)
- Chun-Ming Chen
- Department of Oral and Maxillofacial Surgery, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan;
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan;
| | - Ting-Ying Yu
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;
| | - Szu-Ting Chou
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan;
- Department of Orthodontics, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan; (J.-H.C.); (S.-C.C.); (C.-Y.P.)
| | - Jung-Hsuan Cheng
- Department of Orthodontics, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan; (J.-H.C.); (S.-C.C.); (C.-Y.P.)
| | - Shih-Chieh Chen
- Department of Orthodontics, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan; (J.-H.C.); (S.-C.C.); (C.-Y.P.)
| | - Chin-Yun Pan
- Department of Orthodontics, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan; (J.-H.C.); (S.-C.C.); (C.-Y.P.)
| | - Yu-Chuan Tseng
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan;
- Department of Orthodontics, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan; (J.-H.C.); (S.-C.C.); (C.-Y.P.)
- Correspondence:
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Yu W, Sun Y, Miao M, Li L, Zhang Y, Zhang L, Lu E. Eleven-year experience implementing a dental undergraduate research programme in a prestigious dental school in China: Lessons learned and future prospects. EUROPEAN JOURNAL OF DENTAL EDUCATION : OFFICIAL JOURNAL OF THE ASSOCIATION FOR DENTAL EDUCATION IN EUROPE 2021; 25:246-260. [PMID: 32967058 DOI: 10.1111/eje.12598] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 08/20/2020] [Accepted: 09/01/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To summarise the lessons learned from implementing a dental undergraduate research programme over the past eleven years and identify key elements to guarantee the success of dental undergraduate research in the future. MATERIAL AND METHODS An overview of 80 research projects from 2007 to 2017 was provided, consisting of 239 participating undergraduates and 47 faculty advisors. Students' academic performance was compared between participating and non-participating undergraduates. An anonymous questionnaire was designed and distributed to participants, with VAS satisfaction assessment, Likert-scale items and open-ended questions. Questions focused on overall satisfaction, motivation, benefits to student career development and essential elements for the dental undergraduate research programme in the future. RESULTS The undergraduate participants had significantly better scores of GPAs (3.41 vs 3.21; P < 0.0001), obtained more awards on the honour rolls (0.53 vs 0.30; P = 0.0171) and published more peer-reviewed articles (1.62 vs 1.31; P = 0.0253) than non-participants. Seventy-two undergraduates (75.79%) and thirty-eight advisors (80.85%) responded to the questionnaire. The overall satisfaction was scored as 78.18/100 and 72.36/100 amongst advisors and students, respectively. Interest was considered the best motivation for participation by students (3.81/5.00) and advisors (4.00/5.00). The research programme was beneficial to students' overall career development. Essential roles played by the dental school, faculty and undergraduates were suggested to improve the research environment. CONCLUSION The dental undergraduate research programme has positive effects on students' academic performance. The support of the dental school, the engagement of qualified faculty, the interest and autonomy of students and camaraderie amongst these three key elements are essential for the research programme in the future.
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Affiliation(s)
- Weijun Yu
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Yun Sun
- Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Michael Miao
- Curriculum in Oral and Craniofacial Biomedicine, Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Thurston Arthritis Research Center, Division of Rheumatology, Allergy, and Immunology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Lyuyuan Li
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Yu Zhang
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Lili Zhang
- School of Public Health, Zhejiang University School of Medicine, Zhejiang, China
- China Hospital Development Institute, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Eryi Lu
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
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Zhou J, Fu Y, Yu L, Li Z, Chen S. A novel three-dimensional morphological analysis of idiopathic condylar resorption following stabilisation splint treatment. J Oral Rehabil 2021; 48:560-567. [PMID: 33539541 DOI: 10.1111/joor.13154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/18/2021] [Accepted: 01/27/2021] [Indexed: 12/30/2022]
Abstract
Bone modelling evaluation is important for monitoring idiopathic condylar resorption (ICR) progress. To compare condylar modelling in ICR patients treated with or without stabilisation splints (SSs). Eighty-four condyles from 84 ICR patients were studied: 42 received SS therapy (SS group); 42 received conventional therapy (control group). Cone-beam computed tomography images at diagnosis (T0) and after at least 6 months (T1) were used for three-dimensional reconstruction. Volume differences between T0 and T1 (δV) were used to evaluate the amount of modelling. Percentage of growth area (PCT) was used to assess the condylar surface growth tendency. No significant change in condylar volume was found in the SS group, whereas that in the control group was significantly decreased at T1 (P <.0001). The amount of modelling differed among condylar subregions within the SS group: among 6 subregions (P =.0137), between anterior and posterior regions (P =.0336) and between lateral, intermediate and medial regions (P =.0275). Control group condylar subregions showed no significant differences in the amount of modelling. The anabolic modelling tendency of the total condylar surface in the SS group was greater than that in the control group (P =.0251); however, there were no statistical differences in PCTs among condylar subregions in either group. SS therapy effectively reduced further bone destruction and promoted condylar modelling. Three-dimensional morphological analysis is a novel method that can accurately evaluate the amount of bone modelling and growth tendency in ICR patients.
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Affiliation(s)
- Jialiang Zhou
- State Key Laboratory of Oral Disease, Department of Orthodontics, West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Yujie Fu
- School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Centre of Tooth Restoration and Regeneration, Shanghai, China
| | - Lixia Yu
- State Key Laboratory of Oral Disease, Department of Temporomandibular Joint, West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Ziyu Li
- State Key Laboratory of Oral Disease, Department of Orthodontics, West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Song Chen
- State Key Laboratory of Oral Disease, Department of Orthodontics, West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China
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Francisco I, Guimarães A, Lopes M, Lucas A, Caramelo F, Vale F. Condylar form alteration on skeletal class II patients that underwent orthognathic surgery: An overview of systematic reviews. J Clin Exp Dent 2020; 12:e695-e703. [PMID: 32904976 PMCID: PMC7462380 DOI: 10.4317/jced.56947] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 04/13/2020] [Indexed: 12/30/2022] Open
Abstract
Background Bilateral sagittal split osteotomy (BSSO) is commonly considered as the surgical technique of election for the treatment of skeletal class II with mandibular hypoplasia. After orthognathic surgery, condylar resorption can occur as a surgical relapse, which may affect the temporomandibular joint. Objective: This study aimed to summarise published systematic review that assess if orthognathic surgery with mandibular advancement performed on skeletal class II patients results in condylar form alteration.
Material and Methods A literature search was performed using the electronic databases PubMed, Web of Science, Cochrane Library, Embase along with several sources of grey literature. Selection Criteria: Inclusion criteria were systematic reviews published until December 2019, of skeletal class II patients aged more than 18 years old that underwent BSSO with mandibular advancement surgery. Data collection: The electronic search identified 37 publications. Four publications fulfilled the inclusion criteria and were included in this meta-analysis. Qualitative assessment of the selected studies was performed using the Assessment of Multiple Systematic Reviews – AMSTAR 2 checklist.
Results Four systematic reviews were included in this review. Despite its low incidence all studies reported condylar resorption. However, there were methodological limitations in all assessed articles.
Conclusions The alteration of the condylar form may be a consequence of BSSO with mandibular advancement surgery. Additional high quality prospective research assisted by 3D-imaging technology is needed to allow more definite conclusions. Key words:Evidence-based orthodontics, TMJ, Class II, mandibular advancement, malocclusion, Angle class II.
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Affiliation(s)
- Inês Francisco
- DDS, MSc. Assistant Professor, Institute of Orthodontics, Faculty of Medicine, University of Coimbra, Portugal
| | - Adriana Guimarães
- DDS, MSc. Assistant Professor, Institute of Orthodontics, Faculty of Medicine, University of Coimbra, Portugal
| | - Margarida Lopes
- DDS, MSc. Orthodontic Postgraduate, Institute of Orthodontics, Faculty of Medicine, University of Coimbra, Portugal
| | - António Lucas
- DDS, MSc. Orthodontic Postgraduate, Institute of Orthodontics, Faculty of Medicine, University of Coimbra, Portugal
| | - Francisco Caramelo
- PhD. Professor, Institute of Clinical and Biomedical Research of Coimbra (iCBR), Faculty of Medicine of the University of Coimbra, Portugal
| | - Francisco Vale
- DDS, MSc. PhD. Program Director and Head of Department, Institute of Orthodontics, Faculty of Medicine, University of Coimbra, Portugal
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Zhou Z, Chen X, Zhang Y, Hu D, Qiao L, Yu R, Yap P, Pan G, Zhang H, Shen D. A toolbox for brain network construction and classification (BrainNetClass). Hum Brain Mapp 2020; 41:2808-2826. [PMID: 32163221 PMCID: PMC7294070 DOI: 10.1002/hbm.24979] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 02/09/2020] [Accepted: 02/25/2020] [Indexed: 12/12/2022] Open
Abstract
Brain functional network has been increasingly used in understanding brain functions and diseases. While many network construction methods have been proposed, the progress in the field still largely relies on static pairwise Pearson's correlation-based functional network and group-level comparisons. We introduce a "Brain Network Construction and Classification (BrainNetClass)" toolbox to promote more advanced brain network construction methods to the filed, including some state-of-the-art methods that were recently developed to capture complex and high-order interactions among brain regions. The toolbox also integrates a well-accepted and rigorous classification framework based on brain connectome features toward individualized disease diagnosis in a hope that the advanced network modeling could boost the subsequent classification. BrainNetClass is a MATLAB-based, open-source, cross-platform toolbox with both graphical user-friendly interfaces and a command line mode targeting cognitive neuroscientists and clinicians for promoting reliability, reproducibility, and interpretability of connectome-based, computer-aided diagnosis. It generates abundant classification-related results from network presentations to contributing features that have been largely ignored by most studies to grant users the ability of evaluating the disease diagnostic model and its robustness and generalizability. We demonstrate the effectiveness of the toolbox on real resting-state functional MRI datasets. BrainNetClass (v1.0) is available at https://github.com/zzstefan/BrainNetClass.
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Affiliation(s)
- Zhen Zhou
- College of Computer Science and TechnologyZhejiang UniversityHangzhouChina
- Department of Radiology and BRICUniversity of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
| | - Xiaobo Chen
- Department of Radiology and BRICUniversity of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
- Automotive Engineering Research InstituteJiangsu UniversityZhenjiangChina
| | - Yu Zhang
- Department of Radiology and BRICUniversity of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
- Department of Psychiatry and Behavior SciencesStanford UniversityStanfordCaliforniaUSA
| | - Dan Hu
- Department of Radiology and BRICUniversity of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
| | - Lishan Qiao
- Department of Radiology and BRICUniversity of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
- School of Mathematics ScienceLiaocheng UniversityLiaochengChina
| | - Renping Yu
- Department of Radiology and BRICUniversity of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
- School of Electric EngineeringZhengzhou UniversityZhengzhouChina
| | - Pew‐Thian Yap
- Department of Radiology and BRICUniversity of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
| | - Gang Pan
- College of Computer Science and TechnologyZhejiang UniversityHangzhouChina
| | - Han Zhang
- Department of Radiology and BRICUniversity of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
| | - Dinggang Shen
- Department of Radiology and BRICUniversity of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
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Chen Y, Zhang J, Rao N, Han Y, Ferraro N, August M. Do Patients With Different Mandibular Plane Angles Have Different Time to Relapse After Bilateral Sagittal Osteotomy With Mandibular Advancement? J Oral Maxillofac Surg 2019; 78:455-466. [PMID: 31629758 DOI: 10.1016/j.joms.2019.09.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/16/2019] [Accepted: 09/16/2019] [Indexed: 11/16/2022]
Abstract
PURPOSE This study sought to answer the following question: Do patients with different mandibular plane angles (MPAs) have a different time to relapse after mandibular advancement with bilateral sagittal split osteotomy? MATERIALS AND METHODS We performed a retrospective cohort study of patients who underwent bilateral sagittal split osteotomy advancement at Massachusetts General Hospital between 2005 and 2017. The primary predictor variable was MPA, categorized as low (<25°), medium (between 25° and 35°), or high (>35°). The outcome variable was time to relapse (≥2-mm posterior change at the B point). Other covariates included gender, age, temporomandibular joint symptoms, bimaxillary surgery, direction of mandibular rotation, magnitude of advancement, genioplasty, and fixation method. Time to relapse was estimated using the Kaplan-Meier method. Cox and parametric regressions for interval-censored data were performed. P < .05 was considered statistically significant. RESULTS The sample was composed of 58 patients (40 female patients), with a mean age of 26.1 ± 4.9 years, grouped as follows: low MPA, n = 15; medium MPA, n = 26; and high MPA, n = 17. Clinically significant relapse was found in 18 patients (31%). Age, temporomandibular joint symptoms, counterclockwise rotation, and magnitude of advancement were statistically significantly different among the 3 groups. When we assessed time to relapse, the Kaplan-Meier method showed that high-MPA patients had a longer mean time at risk and higher estimated probabilities of relapse at different time points compared with low- and medium-MPA patients (P < .05). However, this association was not significant in Cox and parametric regressions. CONCLUSIONS Our results suggest that clinically significant relapse was found during the first postoperative year in low-MPA patients and from 2 to 5 years postoperatively in high-MPA patients. Multivariate regression analyses did not show a significant association between MPA and time to relapse, suggesting that other covariates may play a role in the observed time to relapse.
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Affiliation(s)
- Youbai Chen
- Resident, Department of Plastic and Reconstructive Surgery, First Medical Center, Chinese PLA General Hospital, Beijing, China; Fellow, Center for Applied Clinical Investigation, Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Boston, MA; and MS Candidate in Clinical Investigation, Harvard Medical School, Boston, MA
| | - Jie Zhang
- Research Fellow, Center for Applied Clinical Investigation, Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Boston, MA
| | - Naman Rao
- Student, MS Candidate in Clinical Investigation, Harvard Medical School, Boston, MA
| | - Yan Han
- Department Head and Professor, Department of Plastic and Reconstructive Surgery, First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Nalton Ferraro
- Associate Professor, Harvard School of Dental Medicine, Boston, MA
| | - Meredith August
- Director, Center for Applied Clinical Investigation, and Associate Professor, Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Boston, MA; and Associate Professor of Oral and Maxillofacial Surgery, Harvard School of Dental Medicine, Boston, MA.
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Fang Z, Chen Y, Liu M, Xiang L, Zhang Q, Wang Q, Lin W, Shen D. Deep Learning for Fast and Spatially Constrained Tissue Quantification From Highly Accelerated Data in Magnetic Resonance Fingerprinting. IEEE TRANSACTIONS ON MEDICAL IMAGING 2019; 38:2364-2374. [PMID: 30762540 PMCID: PMC6692257 DOI: 10.1109/tmi.2019.2899328] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Magnetic resonance fingerprinting (MRF) is a quantitative imaging technique that can simultaneously measure multiple important tissue properties of human body. Although MRF has demonstrated improved scan efficiency as compared to conventional techniques, further acceleration is still desired for translation into routine clinical practice. The purpose of this paper is to accelerate MRF acquisition by developing a new tissue quantification method for MRF that allows accurate quantification with fewer sampling data. Most of the existing approaches use the MRF signal evolution at each individual pixel to estimate tissue properties, without considering the spatial association among neighboring pixels. In this paper, we propose a spatially constrained quantification method that uses the signals at multiple neighboring pixels to better estimate tissue properties at the central pixel. Specifically, we design a unique two-step deep learning model that learns the mapping from the observed signals to the desired properties for tissue quantification, i.e.: 1) with a feature extraction module for reducing the dimension of signals by extracting a low-dimensional feature vector from the high-dimensional signal evolution and 2) a spatially constrained quantification module for exploiting the spatial information from the extracted feature maps to generate the final tissue property map. A corresponding two-step training strategy is developed for network training. The proposed method is tested on highly undersampled MRF data acquired from human brains. Experimental results demonstrate that our method can achieve accurate quantification for T1 and T2 relaxation times by using only 1/4 time points of the original sequence (i.e., four times of acceleration for MRF acquisition).
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Wang P, Zhang Z, Wang Y, Li X, Ye B, Li J. The accuracy of virtual-surgical-planning-assisted treatment of hemifacial microsomia in adult patients: distraction osteogenesis vs. orthognathic surgery. Int J Oral Maxillofac Surg 2018; 48:341-346. [PMID: 30201164 DOI: 10.1016/j.ijom.2018.07.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 06/15/2018] [Accepted: 07/16/2018] [Indexed: 02/05/2023]
Abstract
Hemifacial microsomia (HFM) is a common congenital craniofacial deformity with a high prevalence. Orthognathic surgery and distraction osteogenesis are two conventionally used treatments of HFM. The main objective of this retrospective study was to evaluate the accuracy of two treatments with the help of virtual surgical planning in adult HFM patients. Sixty-eight adult patients with unilateral HFM were enrolled in this study. Preoperative surgical planning and simulation were performed on three-dimensional computed tomography models. Orthognathic surgery or distraction osteogenesis was performed under the guidance of three-dimensional surgical templates. Postoperative evaluation of the intervention was performed by comparison of the affected ramus height, chin deviation and the occlusal cant in surgical planning and actual result. Outcome and feedback information (an average of 14 months) showed that virtual surgical planning was accurately transferred to actual surgery in both surgical approaches. There were no statistical differences between the accuracy of affected ramus height and the occlusal cant in two surgical approaches. The orthognathic group showed significantly higher accuracy in chin deviation. In conclusion, virtual surgical planning and three-dimensional surgical templates were proved to facilitate treatment planning and offer an accurate surgical result in the treatment of adult HFM patients.
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Affiliation(s)
- P Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Z Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - B Ye
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - J Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
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Miao MZ, Wang B, Wu D, Zhang S, Wong S, Shi O, Hu A, Mao L, Fang B. Temporomandibular joint positional change accompanies post-surgical mandibular relapse-A long-term retrospective study among patients who underwent mandibular advancement. Orthod Craniofac Res 2017; 21:33-40. [DOI: 10.1111/ocr.12209] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2017] [Indexed: 12/16/2022]
Affiliation(s)
- M. Z. Miao
- Department of Oral and Craniofacial Health Sciences; UNC School of Dentistry; Chapel Hill NC USA
| | - B. Wang
- Department of Oral and Craniomaxillofacial Surgery; Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - D. Wu
- Department of Biostatistics; School of Dentistry; Department of Periodontology; UNC School of Public Health; Chapel Hill NC USA
| | - S. Zhang
- Department of Oral and Craniofacial Health Sciences; Center for Oral and Systemic Diseases; UNC School of Dentistry; Chapel Hill NC USA
| | - S. Wong
- Department of Oral and Craniofacial Health Sciences; Department of Orthodontics; UNC School of Dentistry; Chapel Hill NC USA
| | - O. Shi
- Shanghai Jiao Tong University School of Public Health; Shanghai China
| | - A. Hu
- Department of Oral and Craniofacial Health Sciences; UNC School of Dentistry; Chapel Hill NC USA
| | - L. Mao
- Department of Oral and Craniomaxillofacial Surgery; Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - B. Fang
- Department of Oral and Craniomaxillofacial Surgery; Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
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