{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T22:34:14Z","timestamp":1772058854346,"version":"3.50.1"},"reference-count":24,"publisher":"Wiley","license":[{"start":{"date-parts":[[2021,11,5]],"date-time":"2021-11-05T00:00:00Z","timestamp":1636070400000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Focus on Research and Development plan in Shanxi Province","award":["201903D321120"],"award-info":[{"award-number":["201903D321120"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Computational and Mathematical Methods in Medicine"],"published-print":{"date-parts":[[2021,11,5]]},"abstract":"<jats:p>Objective. Based on deep learning, the characteristics of food impaction with tight proximal contacts were studied to guide the subsequent clinical treatment of occlusal adjustment. At the same time, digital model building, software measurement, and statistical correlation analysis were used to explore the cause of tooth impaction and to provide evidence for clinical treatment. Methods. Volunteers with (<jats:inline-formula>\n                     <a:math xmlns:a=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\">\n                        <a:mi>n<\/a:mi>\n                        <a:mo>=<\/a:mo>\n                        <a:mn>250<\/a:mn>\n                     <\/a:math>\n                  <\/jats:inline-formula>) and without (<jats:inline-formula>\n                     <c:math xmlns:c=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M2\">\n                        <c:mi>n<\/c:mi>\n                        <c:mo>=<\/c:mo>\n                        <c:mn>250<\/c:mn>\n                     <\/c:math>\n                  <\/jats:inline-formula>) tooth impaction were recruited, respectively, to conduct a questionnaire survey. Meanwhile, models were made and perfused by skilled clinical physicians for these patients, and characteristics such as adjacent line length, adjacent surface area, tongue abduction gap angle, buccal abduction gap angle, and occlusal abduction gap angle were measured. A normality test, differential analysis, correlation analysis of pathological characteristics of the impaction group, principal component analysis (PCA), and binary logistic regression analysis were performed. Results. The adjacent line length, adjacent surface area, tongue abduction gap angle, buccal abduction gap angle, and occlusal abduction gap angle all met normal distribution. There were statistically significant differences in adjacent line length (<jats:inline-formula>\n                     <e:math xmlns:e=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M3\">\n                        <e:mi>p<\/e:mi>\n                        <e:mo>&lt;<\/e:mo>\n                        <e:mn>0.001<\/e:mn>\n                     <\/e:math>\n                  <\/jats:inline-formula>), adjacent surface area (<jats:inline-formula>\n                     <g:math xmlns:g=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M4\">\n                        <g:mi>p<\/g:mi>\n                        <g:mo>&lt;<\/g:mo>\n                        <g:mn>0.001<\/g:mn>\n                     <\/g:math>\n                  <\/jats:inline-formula>), and occlusal abduction gap angle (<jats:inline-formula>\n                     <i:math xmlns:i=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M5\">\n                        <i:mi>p<\/i:mi>\n                        <i:mo>&lt;<\/i:mo>\n                        <i:mn>0.001<\/i:mn>\n                     <\/i:math>\n                  <\/jats:inline-formula>) between the two groups. After dimensionality reduction by PCA on characteristics, adjacent line length, adjacent surface area, buccal abduction gap angle, and occlusal abduction gap angle had a strong correlation with the principal components. Binary logistic regression analysis showed that adjacent line length and adjacent surface area had positive effects on impaction. The buccal abduction gap angle and occlusal abduction gap angle had a significant negative influence on impaction. Conclusion. Adjacent line length, adjacent surface area, buccal abduction gap angle, and occlusal abduction gap angle are independent factors influencing food impaction.<\/jats:p>","DOI":"10.1155\/2021\/1000820","type":"journal-article","created":{"date-parts":[[2021,11,5]],"date-time":"2021-11-05T17:35:09Z","timestamp":1636133709000},"page":"1-8","source":"Crossref","is-referenced-by-count":7,"title":["Research on the Characteristics of Food Impaction with Tight Proximal Contacts Based on Deep Learning"],"prefix":"10.1155","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4124-4004","authenticated-orcid":true,"given":"Yitong","family":"Cheng","sequence":"first","affiliation":[{"name":"Department of Prosthodontics, Shanxi Medical University School and Hospital of Stomatology, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9794-7951","authenticated-orcid":true,"given":"Zhijiang","family":"Wang","sequence":"additional","affiliation":[{"name":"Shanxi Provincial Key Laboratory of Biomedical Imaging and Imaging Big Data, College of Big Data, North University of China, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4152-3452","authenticated-orcid":true,"given":"Yue","family":"Shi","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics, Shanxi Medical University School and Hospital of Stomatology, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6640-1139","authenticated-orcid":true,"given":"Qiaoling","family":"Guo","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics, Shanxi Medical University School and Hospital of Stomatology, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0016-1037","authenticated-orcid":true,"given":"Qian","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics, Shanxi Medical University School and Hospital of Stomatology, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9648-1018","authenticated-orcid":true,"given":"Rui","family":"Chai","sequence":"additional","affiliation":[{"name":"Shanxi Provincial Key Laboratory of Biomedical Imaging and Imaging Big Data, College of Big Data, North University of China, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3696-857X","authenticated-orcid":true,"given":"Feng","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics, Shanxi Medical University School and Hospital of Stomatology, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"1","article-title":"Classification of food impaction-revisited and its management","author":"M. Khairnar"},{"key":"2","first-page":"13","article-title":"A three-dimensional finite element analysis of vertical food impaction under the influence of the horizontal distance between the mandibular first and second molars","volume":"22","author":"H. Yang","year":"2020","journal-title":"Modern Medicine Journal of China"},{"issue":"1","key":"3","first-page":"1","article-title":"Common cause analysis and sequential treatment of clinical food impaction","volume":"43","author":"L. Yun","year":"2016","journal-title":"International Journal of Stomatology"},{"key":"4","first-page":"710","article-title":"Analysis of the etiology and curative effect of food impaction","volume":"36","author":"W. Shichao","year":"2015","journal-title":"Anhui Medical Journal"},{"key":"5","first-page":"69","article-title":"Frequent stuffing of teeth is also a disease","volume":"469","author":"Z. Jinjing","year":"2019","journal-title":"New Rural Technology"},{"key":"6","volume-title":"Research on precise guidance technology for adjoining compact food impaction (occlusal) treatment","author":"L. Zhuolun","year":"2020"},{"key":"7","first-page":"245","article-title":"Research on the Mechanism of Vertical Food Impaction","volume":"45","author":"W. Maoxia","year":"2018","journal-title":"International Journal of Stomatology"},{"key":"8","volume-title":"Retrospective Analysis of 328 Cases of Food Impaction after Full Crown Repair","author":"Z. Guihong","year":"2018"},{"key":"9","article-title":"Clinical treatment of food impaction during orthodontics","author":"W. Xiaojie"},{"key":"10","volume-title":"CBCT Study on Quantifying Clinical Parameters of Occlusal Treatment for Vertical Food Impaction","author":"W. Yue","year":"2016"},{"key":"11","article-title":"Analysis of 128 cases of food impaction caused by occlusal adjustment","volume":"40","author":"X. Yeping","year":"2015","journal-title":"Journal of Bengbu Medical College"},{"key":"12","first-page":"626","article-title":"Clinical observation of sequential oclusal adjustment for kinetic food impaction","volume":"27","author":"X. Juan","year":"2009","journal-title":"West China Journal of Stomatology"},{"issue":"11","key":"13","first-page":"44","article-title":"Clinical observation on the effect of occlusal main functional area adjustment on food impaction","volume":"29","author":"M. Yihui","year":"2013","journal-title":"Journal of Clinical Stomatology"},{"key":"14","volume-title":"Study on the Method of Reconstructing Close Adjacencies to Prevent Food Impaction during Fixed Repair","author":"C. Mengqi","year":"2015"},{"key":"15","doi-asserted-by":"publisher","DOI":"10.1186\/s13014-021-01771-z"},{"key":"16","doi-asserted-by":"publisher","DOI":"10.1016\/j.media.2021.102138"},{"key":"17","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejca.2021.05.026"},{"key":"18","doi-asserted-by":"publisher","DOI":"10.1109\/TPAMI.2020.3005434"},{"key":"19","doi-asserted-by":"publisher","DOI":"10.3390\/plants9050571"},{"issue":"903","key":"20","first-page":"51","article-title":"Finite element analysis of influence of implant denture relative position on food impaction","volume":"24","author":"P. Guobao","year":"2020","journal-title":"Chinese Journal of Tissue Engineering Research"},{"key":"21","first-page":"6410","article-title":"KPConv: Flexible and Deformable Convolution for Point Clouds","author":"H. Thomas"},{"key":"22","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-030-00931-1_77"},{"key":"23","first-page":"303","article-title":"Relationship between the interproximal interface of adjacent teeth and food impaction","volume":"43","author":"H. Min","year":"2016","journal-title":"International Journal of Stomatology"},{"key":"24","first-page":"130","article-title":"Effect of fixed denture and pad removable partial denture on masticatory function in patients with severe tooth abrasion and dentition defect","volume":"39","author":"Y. 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