马来儿童恒切牙牙冠尺寸：亚洲人群中的性别二态性和牙体大小。

Crown dimensions of Malay deciduous teeth: Sex dimorphism and tooth size in Asia.

机构信息

Department of Anthropology, University of Oregon, Eugene, OR 97403-1218, USA.

Department of Pediatric Dentistry, Gadjah Mada University, Yogyakarta, Indonesia.

出版信息

Arch Oral Biol. 2022 Sep;141:105481. doi: 10.1016/j.archoralbio.2022.105481. Epub 2022 Jun 15.

DOI:10.1016/j.archoralbio.2022.105481

PMID:35772256

Abstract

OBJECTIVE

This study documents deciduous tooth crown dimensions and sex dimorphism in modern Malay children of Indonesia. Comparisons are made with living and prehistoric East and South Asians to better understand tooth size variation in space and through time.

DESIGN

Measurements of the dental crown were made with a Mitutoyo digimatic caliper, interfaced with a Dell laptop, running Microsoft Excel (2003). Buccolingual (BL) measurements of maximum crown breadth of modern Malay were made by the first author. All prehistoric South Asian comparative samples were measured by the first author, data for living East and South Asians were taken from published data. All statistical analyses were conducted using SAS, Inc. (9.1 for Windows).

RESULTS

Crown dimensions, sex dimorphism and crown areas are presented and reveal consistencies in tooth size and level of sexual dimorphism with East and South Asian living samples. Sex dimorphism in Malay crown dimensions is low (1.1%) among Asians. Total crown area is 484.7 mm, similar to living Japanese (486.3 mm), but greater than Hindus (476.4 mm) of India. Compared with prehistoric groups the Malay have reduced tooth size, especially when compared with Neolithic (MR 3, 535.3 mm) and Chalcolithic (MR 2, 515.3 mm) Mehrgarh, Pakistan.

CONCLUSION

Sex dimorphism in Malay deciduous crown dimensions is lower than average among Asians and total tooth crown area is similar to living East and South Asians but is reduced when compared with prehistoric Asian samples.

摘要

目的

本研究记录了印度尼西亚现代马来儿童的乳牙冠尺寸和性别二态性。与生活在和史前的东亚和南亚人进行比较，以便更好地了解牙齿在空间和时间上的大小变化。

设计

使用 Mitutoyo 数字卡尺（带接口的 Dell 笔记本电脑，运行 Microsoft Excel（2003））测量牙冠的颊舌（BL）测量。现代马来人的最大牙冠宽度的 BL 测量由第一作者进行。所有史前南亚比较样本均由第一作者测量，生活在东亚和南亚的人的数据来自已发表的数据。所有统计分析均使用 SAS，Inc.（9.1 for Windows）进行。

结果

呈现了牙冠尺寸、性别二态性和牙冠面积，并揭示了与东亚和南亚生活样本在牙齿大小和性二态性水平上的一致性。马来牙冠尺寸的性别二态性在亚洲人中较低（1.1%）。总牙冠面积为 484.7 毫米，与生活在日本的人相似（486.3 毫米），但大于印度的印度教徒（476.4 毫米）。与史前群体相比，马来人牙齿尺寸减小，尤其是与新石器时代（MR 3，535.3 毫米）和青铜时代（MR 2，515.3 毫米）巴基斯坦 Mehrgarh 相比。