Evidence map›Paper›PMID 40745542›Full record

ArticleBMC oral health2025

Orthodontic treatment improves gingival morphological symmetry parameters: a retrospective study.

Yibo Wang, Siyi Wang, Yu Chen, Kaijin Lin, Guanglin Gao, Shanshan Wu, Wei Zhao, Minqian Zheng, Jianbin Guo

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Article in BMC oral health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Yibo Wang *Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, No. 246 Yangqiao Middle Road, Gulou District, Fuzhou, Fujian, 350001, China.
Siyi Wang *Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, No. 246 Yangqiao Middle Road, Gulou District, Fuzhou, Fujian, 350001, China.
Yu Chen *Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, No. 246 Yangqiao Middle Road, Gulou District, Fuzhou, Fujian, 350001, China.
Kaijin LinFujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, No. 246 Yangqiao Middle Road, Gulou District, Fuzhou, Fujian, 350001, China.
Guanglin GaoFujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, No. 246 Yangqiao Middle Road, Gulou District, Fuzhou, Fujian, 350001, China.
Shanshan WuDepartment of Clinical Medicine, Shanghai Smartee Denti-Technology Co., Ltd, Shanghai, 201210, China.
Wei ZhaoFujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, No. 246 Yangqiao Middle Road, Gulou District, Fuzhou, Fujian, 350001, China. diovdentist@126.com.
Minqian ZhengFujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, No. 246 Yangqiao Middle Road, Gulou District, Fuzhou, Fujian, 350001, China. zmq221092@fjmu.edu.cn.
Jianbin GuoFujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, No. 246 Yangqiao Middle Road, Gulou District, Fuzhou, Fujian, 350001, China. jianbin@fjmu.edu.cn.

Funding

Fujian Medical University innovation and entrepreneurship training program for college students (C23050)Fujian Provincial Health Technology Project (2022GGA041) (2021GGB016)Natural Science Foundation of Fujian Province (2021J01804) (2023J01712)（2024J01658）Science and Technology Innovation Joint Foundation of Fujian Province (2020Y9031)
6 · The paper itself

Abstract

backgroundThe pursuit of an aesthetically pleasing smile is closely tied to the symmetry of teeth and gingival morphology, yet the impact of orthodontic treatment on gingival contour symmetry remains underexplored. This study aims to investigate the effects of orthodontic treatment on gingival morphology symmetry.

methodsThis retrospective study includes 50 eligible patients as the experimental group and 50 healthy individuals as the control group. Digital intraoral scans were performed for malocclusion patients both before and after clear aligner treatment, as well as for individuals in the control group. Geomagic Control X software was used to assess quantitative indices affecting gingival morphology and contour symmetry. Specifically, mean deviation distance (MDD) was used to measure the average deviation of gingival points relative to the contralateral gingival contour, root mean square (RMS) to reflect the overall level of deviation across all gingival points, and the percentage within tolerance to indicate the proportion of points falling within the tolerance range. Statistical analysis was conducted using SPSS 24 software, with significance set at P < 0.05. The reproducibility of measurements was assessed by the intraclass correlation coefficient (ICC).

resultsSignificant statistical differences in gingival contour symmetry measurements were observed within the study group before and after orthodontic treatment. (P < 0.001). Comparisons between the postorthodontic group and the control group revealed no significant differences in most gingival contour symmetry parameters. Additionally, there were no statistically significant differences in the mean changes of MDD and RMS across different tooth positions before and after orthodontic treatment. However, a statistically significant difference was observed in the changes of percentage within tolerance (p = 0.019) across tooth positions before and after orthodontic treatment.

conclusionOrthodontic treatment significantly enhances gingival contour symmetry in patients with mild anterior crowding and skeletal Class I malocclusion. A comparison of the gingival morphology symmetry in the anterior teeth between postorthodontic patients and healthy individuals revealed no statistically significant differences.

trial registrationThis study was approved by the Biomedical Research Ethics Committee of Stomatology Hospital of Fujian Medical University (approval no. 2024-14).

Indexed as

GingivaMalocclusionOrthodontics, CorrectiveAdolescentEsthetics, DentalFemaleHumansMaleRetrospective StudiesDental aestheticsDigital intraoral scansGingivalOrthodontic treatmentSymmetryThree-dimensional analysis

Identifiers

PMID40745542
PMCPMC12315202

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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.