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. 2023 Jun 5:2023:2485368.
doi: 10.1155/2023/2485368. eCollection 2023.

A Comprehensive Analysis of Clinical Crowns in Young of Han Nationality with Normal Occlusion Using Intraoral Scanning

Rongkai Cao  1 , Piaopiao Qiu  1 , Jianzhao Ni  2 , Hui Xu  1 , Haoxin Pan  2 , Yujie Cao  2
Affiliations

A Comprehensive Analysis of Clinical Crowns in Young of Han Nationality with Normal Occlusion Using Intraoral Scanning

Rongkai Cao et al. Int J Clin Pract. .

Abstract

Background: The measurement and analysis of clinical crowns play a crucial role in stomatology, anthropology, and studies of genetic and environmental variables in oral and maxillofacial development.

Purpose: The objective of the present study was to measure the parameters of clinical crowns of permanent dentition in youth of Han nationality using intraoral scanning and identify potential influencing factors.

Materials and methods: A total of 100 subjects (50 males and 50 females) of Han nationality aged 18-24 with normal occlusion were selected. An intraoral scanner was used to obtain the digital dental impressions, and Materialise Magics 21 software was used to measure the mesiodistal diameter (MDD), buccolingual diameter (BLD), height, mesiodistal angle (MDA), and vestibulo-oral angle (VOA) of clinical crowns. The central height was calculated based on the height of clinical crowns. SPSS 27.0 software was used for statistical analysis. The two-independent-samplet-test was used to assess discrepancies in clinical crowns between males and females. The paired t-test was used to determine differences between antimetric pairs of clinical crowns within the same arch. The repeatability of intraoral scanning was tested using the paired t-test between two measurements at one-month intervals. The overall estimated effect was considered significant where P < 0.05.

Results: The MDD, BLD, height, MDA, and VOA of clinical crowns in the youth of Han nationality were measured, and the central height was calculated. No significant difference was found in terms of MDA and VOA between genders and antimetric pairs within the same arch. Regarding the distance parameters, the MDD, BLD, and height of clinical crowns in males were significantly larger than those in females (MDD: U1, U3, U7, L2, L3, L6, and L7: P < 0.01; BLD: U1: P=0.02; U3-U7 and L1-L7: P < 0.01; height: U2: P=0.03; and U1, U3-U7, and L3-L7: P < 0.01). No significant difference was found in clinical crowns between antimetric pairs within the same arch. Intraoral scanning demonstrated good repeatability in the measurement of clinical crowns.

Conclusions: Apart from MDA and VOA, the parameters of clinical crowns in males were significantly larger than in females. Antimetric pairs of clinical crowns within the same arch demonstrated similar tooth dimensions. In future clinical practice and scientific research in the oral and maxillofacial region, a comprehensive design of sexual and ethnic characteristics should be considered.

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Conflict of interest statement

The authors declare that there are no conflicts of interest.

Figures

Figure 1
Figure 1
Digital dental impressions obtained by intraoral scanning.
Figure 2
Figure 2
Measurement of mesiodistal diameter of clinical crowns.
Figure 3
Figure 3
Measurement of buccolingual diameter of clinical crowns.
Figure 4
Figure 4
Measurement of height of clinical crowns.
Figure 5
Figure 5
Measurement of the mesiodistal angle of clinical crowns.
Figure 6
Figure 6
Measurement of the vestibulo-oral angle of clinical crowns.
See this image and copyright information in PMC

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