Integrated correlation analysis of the thickness of the buccal bone and gingiva of the maxillary incisors

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Integrated correlation analysis of the thickness of the buccal bone and gingiva of the maxillary incisors
Zhuohong Gong; Guangqi Gao; Mengru Shi; Xuejing Gan; Gengbin Cai; Hongcheng Chen; Cuijun Li; Zhuofan Chen; Danying Chen; Zetao Chen, 2024, "Integrated correlation analysis of the thickness of the buccal bone and gingiva of the maxillary incisors", https://doi.org/10.48331/scielodata.H4WLPB, SciELO Data, V1, UNF:6:FFZz2+kQJW0chczsxGwt+Q== [fileUNF]
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Description
Objective: The purpose of this study was to validate the integrated correlation between the thickness of the buccal bone and the gingiva of the anterior maxilla and to gain insight into the reference plane selection when measuring these two tissues before treatment with implants. Methodology: CBCT and model scans of 350 included human subjects were registered in coDiagnostiX software to obtain sagittal maxillary incisor sections. The buccal bone thickness was measured at the coronal (2, 4 and 6 mm apical to the cementoenamel junction (CEJ)) and apical (0, 2 and 4 mm coronal to the apex plane) regions. The buccal gingival thickness was measured at the supra-CEJ (0, 1mm coronal to the CEJ) and sub-CEJ regions (1, 2, 4 and 6 mm apical to the CEJ). Canonical correlation analysis was performed for intergroup correlation analysis and the investigation of key parameters. Results: The mean thicknesses of the buccal bone and gingiva at different levels were 0.64~1.88 mm and 0.66~1.37 mm, respectively. There was a strong intergroup canonical correlation between the thickness of the buccal bone and that of the gingiva (r=0.837). The thickness of the buccal bone and gingiva at 2 mm apical to the CEJ are the most important indices with the highest canonical correlation coefficient and loadings. The most and least prevalent subgroups were the thin bone and thick gingiva group (accounting for 47.6%) and the thick bone and thick gingiva group (accounting for 8.6%). Conclusion: Within the limitations of this retrospective study, the thickness of the buccal bone is significantly correlated with that of the buccal gingiva, and the 2 mm region apical to the CEJ is a vital plane for quantifying the thickness of these two tissues. (2024-04-08)
Subject Medicine, Health and Life Sciences
Keyword Maxilla/anatomy & histology, Gingiva/anatomy & histology, Incisor/anatomy & histology, Canonical Correlation Analysis
Related Publication Chen Z, Gong Z, Gao G, Shi M, Xuejing C, Hongcheng C, et al. Integrated correlation analysis of the thickness of the buccal bone and gingiva of the maxillary incisors. J Appl Oral SCi. 2024;32:e20240018. doi: 10.1590/1678-7757-2024-0018
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Published Apr 8, 2024
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Flowchart of the patient inclusion
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Figure_2.jpg
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Published Apr 8, 2024
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MD5: 95aff027f7a4ee9fe683969d3c7e1052
The schematics of the registration and integrated measurement method of the thickness of buccal bone and gingiva. The CBCT (containing bone information) and model scan (containing gingival information) data were first collected(A-B). The researcher imported the two multimodal data into the in the coDiagnostiX software and selected three anatomic feature points from the anterior and posterior teeth (C). The software would automatically register the CBCT and model scan based on the selected surfaces (D). The sagittal planes of the incisors included the bone and gingival information in the same coordinate system(E). The measurement of buccal bone and gingiva was performed at preset identical levels (F). The measurement levels of buccal bone wall thickness were divided into the coronal buccal bone (2/4/6mm apical to CEJ, abbreviates as CEJ2B, CEJ4B and CEJ6B) and apical buccal bone (0/4/6mm coronal to apex, abbreviates as ApicalB, Apical2B and Apical4B), the measurement levels of buccal gingival thickness were divided into the supra-CEJ gingival thickness bone (1 mm apical to CEJ and CEJ level, abbreviates as CEJ+1G and CEJG) and sub-CEJ gingival thickness (1/2/4/6mm apical to CEJ, abbreviates as CEJ1G, CEJ2G, CEJ4G and CEJ6G).
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Overview of the distribution of buccal bone thickness and buccal gingival thickness in the maxillary anterior region. The distribution of buccal bone thickness, with the thinnest thickness in the CEJ2B and two convexities in the CEJ4B and ApicalB (A). The distribution of gingival thickness, which peaks in the CEJ1G and concaves in CEJ4G (B).
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Published Apr 8, 2024
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Heatmap of inter-group canonical correlation coefficient between the thickness of buccal bone and gingiva. The buccal bone thickness group (CEJ2B, CEJ4B, CEJ6B, Apical4B, Apical2B, ApicalB) is composed of the coronal buccal bone thickness (CEJ2B, CEJ4B, CEJ6B) and the apical buccal bone thickness (Apical4B, Apical2B, ApicalB). The gingival thickness group (CEJ+1G, CEJG, CEJ1G, CEJ2G, CEJ4G, CEJ6G) is composed of the supra-CEJ gingival thickness (CEJ+1G, CEJG) and sub-CEJ gingival thickness (CEJ1G, CEJ2G, CEJ4G, CEJ6G). *P<0.05, **P<0.01, ***P<0.001.
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Published Apr 8, 2024
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Detailed description of demographic characteristics in different subclasses of buccal bone and gingiva based on the CEJ2B and CEJ2G, including the age and tooth type. *Statistically significant (P < 0.05).
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README.txt
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Published Apr 8, 2024
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README
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Table_1.xlsx
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Published Apr 8, 2024
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Population distribution of thin and thick types of buccal bone and gingiva.
Table_S1.xlsx
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Published Apr 8, 2024
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MD5: b35f1aae3cfc502e4b666768e872f797
Canonical correlation structure charts between the thickness of buccal bone and gingiva of the anterior maxillary region (ranked by the canonical correlation). The Canonical Correlation Coefficient is the weight that each variables multiplied to form the equation. The Canonical and cross loadings show the contribution of each variable to its group. The key contributing indices were investigated between the variable sets with high correlation (Canonical correlation ≥ 0.60, Part A), and the CEJ2B and CEJ2G were found to be the most important either in canonical correlation coefficient or in loadings. The variable sets with moderate to low correlation (Canonical correlation < 0.60, Part B) were not investigated.
Table_S2.tab
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Published Apr 8, 2024
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3 Variables, 18 Observations UNF:6:BjIBXtLUSbq8WnuK0WlIzQ==
Characteristics of the thickness of buccal bone and gingiva at 2mm apical to CEJ (CEJ2B and CEJ2G) of the anterior maxillary region (mean±SD).
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