牙冠形态和牙龈表型:来自不同亚洲人群的启示

IF 1.7 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Saudi Dental Journal Pub Date : 2024-05-01 DOI:10.1016/j.sdentj.2024.02.017
Nik-Madihah Nik-Azis , Siti Nuramanina Abd-Shukor , Masfueh Razali , Hanis Yasreena Zakaria , Nur Zafira Zabarulla
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引用次数: 0

摘要

本研究旨在将上颌中切牙的牙冠分为不同的类别,并研究这些牙冠形态与不同亚洲人种的形态特征之间的关联。从修复和美学的角度来看,这对治疗计划和病例管理,尤其是前牙的治疗计划和管理具有重要意义。方法和材料从马来西亚国民大学牙科学院的学生、教职员工和患者中收集了 160 名参与者的临床测量数据和照片数据。测量了牙冠长度、牙冠宽度、接触面、乳头高度、乳头充填度、角化粘膜宽度和牙龈组织厚度。结果平均牙冠宽度为 7.093 ± 0.637 毫米,平均牙冠长度为 10.209 ± 0.966 毫米。确定了三种树冠形态:三角形(50%)、方形/锥形(23.1%)和方形(26.9%)。三角形牙冠群的平均乳头高度明显更高(4.64 毫米 ± 0.818),乳头填充不完全的发生率也最高(17.5%)。χ2(2,160)=0.033。结论在这一多样化的亚洲人群中,牙冠形态表现出三个群组:三角形、方形/锥形和方形,其特点是平均牙冠宽度和牙冠长度明显较小。大多数参与者的牙冠主要呈三角形,牙冠宽度、牙冠长度和牙冠宽度/牙冠长度比均较小。此外,还观察到三个种族群体的牙冠形态及其形态计量属性存在明显差异:马来人、华人和印度人。
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Crown forms and gingival phenotypes: Insights from a diverse Asian population

Objective

This study aimed to classify the crowns of maxillary central incisors into distinct categories and to examine the associations between these crown forms and morphometric characteristics in an ethnically diverse Asian population. This is significant for the treatment planning and management of cases, especially for the anterior teeth, from the restorative and aesthetic points of view.

Method and Materials

Clinical measurements and photographic data were collected from 160 participants, comprising students, staff, and patients of the Faculty of Dentistry, Universiti Kebangsaan Malaysia. The crown length, crown width, contact surface, papilla height, papilla fill, keratinized mucosa width, and gingival tissue thickness were measured. Cluster analyses were performed to identify the different crown form categories and corresponding characteristics.

Results

The mean crown width measured 7.093 ± 0.637 mm, while the mean crown length was 10.209 ± 0.966 mm. Three crown-form clusters were identified: triangular (50 %), square/tapered (23.1 %), and square (26.9 %) shapes. The triangular cluster had a significantly higher mean papilla height (4.64 mm ± 0.818) and the highest incidence of incomplete papilla fill (17.5 %). The chi-squared test showed a significant difference in crown forms between the different ethnicities, χ2 (2, 160) = 0.033.

Conclusion

Within this diverse Asian population, the crown form demonstrates three clusters: triangular, square/tapered, and square, characterized by a notably small average crown width and crown length. Most participants predominantly exhibited triangular crown forms with reduced crown width, crown length, and crown width/ crown length ratio. Furthermore, noticeable variations in crown forms and their morphometric attributes were observed among the three ethnic groups: Malays, Chinese, and Indians.

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来源期刊
Saudi Dental Journal
Saudi Dental Journal DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
3.60
自引率
0.00%
发文量
86
审稿时长
22 weeks
期刊介绍: Saudi Dental Journal is an English language, peer-reviewed scholarly publication in the area of dentistry. Saudi Dental Journal publishes original research and reviews on, but not limited to: • dental disease • clinical trials • dental equipment • new and experimental techniques • epidemiology and oral health • restorative dentistry • periodontology • endodontology • prosthodontics • paediatric dentistry • orthodontics and dental education Saudi Dental Journal is the official publication of the Saudi Dental Society and is published by King Saud University in collaboration with Elsevier and is edited by an international group of eminent researchers.
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