Evidence map›Paper›PMID 33661340›Full record

ArticleInternational journal of legal medicine2021

Accurate age classification using manual method and deep convolutional neural network based on orthopantomogram images.

Yu-Cheng Guo, Mengqi Han, Yuting Chi, Hong Long, Dong Zhang, Jing Yang, Yang Yang, Teng Chen, Shaoyi Du

Registry-linked trialAbstract readComparative Study
PubMed Publisher
In one paragraph

Article in International journal of legal medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05901857 (Assessing the Precision of Convolutional Neural Networks for Dental Age Estimation in an Egyptian Population From Digital Panoramic Radiographs), which is not on this map. Cited by 38 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 3 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05901857 unknown statusnot on this mapstarted 2023, after this paper: background citation

Assessing the Precision of Convolutional Neural Networks for Dental Age Estimation in an Egyptian Population From Digital Panoramic Radiographs: A Diagnostic Accuracy Study

TypeobservationalSponsorCairo UniversityRan2023 to 2025Enrolled22ConditionsAge ProblemArmsconvolutional neural network
3 · Its place in the literature

Who cites it

38 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Yu-Cheng GuoKey Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, 98 XiWu Road, Xi'an, 710004, Shaanxi, People's Republic of China.
Mengqi HanKey Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, 98 XiWu Road, Xi'an, 710004, Shaanxi, People's Republic of China.
Yuting ChiInstitute of Artificial Intelligence and Robotics, College of Artificial Intelligence, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, Shaanxi, People's Republic of China.
Hong LongInstitute of Artificial Intelligence and Robotics, College of Artificial Intelligence, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, Shaanxi, People's Republic of China.
Dong ZhangInstitute of Artificial Intelligence and Robotics, College of Artificial Intelligence, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, Shaanxi, People's Republic of China.
Jing YangCollege of Automation Science and Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, Shaanxi, People's Republic of China.
Yang YangCollege of Automation Science and Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, Shaanxi, People's Republic of China.
Teng ChenCollege of Medicine and Forensics, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710004, Shaanxi, People's Republic of China.
Shaoyi DuInstitute of Artificial Intelligence and Robotics, College of Artificial Intelligence, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, Shaanxi, People's Republic of China. dushaoyi@xjtu.edu.cn.

Funding

Key Research and Development Program of Shaanxi Province of China 2020GXLH-Y-008National Key Research and Development Program of China 2017YFA0700800National Natural Science Foundation of China 61971343National Natural Science Foundation of China 81701869
6 · The paper itself

Abstract

Age estimation is an important challenge in many fields, including immigrant identification, legal requirements, and clinical treatments. Deep learning techniques have been applied for age estimation recently but lacking performance comparison between manual and machine learning methods based on a large sample of dental orthopantomograms (OPGs). In total, we collected 10,257 orthopantomograms for the study. We derived logistic regression linear models for each legal age threshold (14, 16, and 18 years old) for manual method and developed the end-to-end convolutional neural network (CNN) which classified the dental age directly to compare with the manual method. Both methods are based on left mandibular eight permanent teeth or the third molar separately. Our results show that compared with the manual methods (92.5%, 91.3%, and 91.8% for age thresholds of 14, 16, and 18, respectively), the end-to-end CNN models perform better (95.9%, 95.4%, and 92.3% for age thresholds of 14, 16, and 18, respectively). This work proves that CNN models can surpass humans in age classification, and the features extracted by machines may be different from that defined by human.

Indexed as

Machine LearningNeural Networks, ComputerAdolescentAge Determination by TeethChildChild, PreschoolFemaleHumansMaleRadiography, PanoramicYoung AdultAge estimationClassificationDeep learningOrthopantomography

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.