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德拉威人群中先天性缺失第二前磨牙的患病率。

Prevalence of congenitally missing second premolar teeth in the Dravidian population.

作者信息

Lakshmanan Lakshimi, Gurunathan Deepa

机构信息

Department of Pediatric and Preventive Dentistry, Saveetha Institute of Medical and Technical Sciences, Saveetha Dental College and Hospitals, Saveetha University, Chennai, Tamil Nadu, India.

出版信息

J Forensic Dent Sci. 2019 May-Aug;11(2):103-106. doi: 10.4103/jfo.jfds_32_19. Epub 2020 Jan 24.

DOI:10.4103/jfo.jfds_32_19
PMID:32082046
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7006304/
Abstract

INTRODUCTION

In the practice of dentistry, one of the most common dental anomalies encountered is the congenitally missing teeth (CMT) with dierent prevalence in each region. CMT are those that fail to erupt in the oral cavity and remain invisible in radiographs. The aim of this study was to evaluate the prevalence of congenitally missing second premolar teeth in the Dravidian population that can be used in forensic research.

MATERIALS AND METHODS

In this retrospective study, a total of 4600 panoramic radiographs of Dravidian children (2580 girls and 2020 boys) with an age group of 9-17 years were viewed for congenitally missing second premolar teeth.

RESULTS

The total number of congenitally missing second premolars was 80 (1.73%). The prevalence was seen more in girls (60%) than boys (40%). Mandibular second premolar was the most commonly missing teeth. Bilateral agenesis (66%) was more prevalent than the unilateral agenesis (34%).

CONCLUSION

The prevalence of congenitally missing second premolar teeth in the Dravidian population was 1.02%. The study of CMT is important in performing dental treatments and also in the field of forensic research as it can provide knowledge on the diversities among populations.

摘要

引言

在牙科实践中，最常见的牙齿异常之一是先天性缺牙（CMT），其在每个地区的患病率各不相同。CMT是指未能在口腔中萌出且在X光片中不可见的牙齿。本研究的目的是评估德拉威人群中先天性缺失第二前磨牙的患病率，这可用于法医研究。

材料与方法

在这项回顾性研究中，共查看了4600张年龄在9至17岁之间的德拉威儿童（2580名女孩和2020名男孩）的全景X光片，以检查先天性缺失的第二前磨牙。

结果

先天性缺失的第二前磨牙总数为80颗（1.73%）。女孩的患病率（60%）高于男孩（40%）。下颌第二前磨牙是最常缺失的牙齿。双侧缺失（66%）比单侧缺失（34%）更为普遍。

结论

德拉威人群中先天性缺失第二前磨牙的患病率为1.02%。CMT的研究在进行牙科治疗以及法医研究领域都很重要，因为它可以提供有关人群差异的知识。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d486/7006304/eb4a78aafd4c/JFDS-11-103-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d486/7006304/cf07fa930967/JFDS-11-103-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d486/7006304/5da35a194f03/JFDS-11-103-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d486/7006304/e735ddab9319/JFDS-11-103-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d486/7006304/5a30c49f111f/JFDS-11-103-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d486/7006304/f7b29a8b1f46/JFDS-11-103-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d486/7006304/eb4a78aafd4c/JFDS-11-103-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d486/7006304/cf07fa930967/JFDS-11-103-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d486/7006304/5da35a194f03/JFDS-11-103-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d486/7006304/e735ddab9319/JFDS-11-103-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d486/7006304/5a30c49f111f/JFDS-11-103-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d486/7006304/f7b29a8b1f46/JFDS-11-103-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d486/7006304/eb4a78aafd4c/JFDS-11-103-g006.jpg

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J Forensic Sci. 2017 Jul;62(4):900-906. doi: 10.1111/1556-4029.13310. Epub 2016 Nov 22.
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Meta-analysis and systematic review of factors biasing the observed prevalence of congenitally missing teeth in permanent dentition excluding third molars.恒牙列（不包括第三磨牙）先天性缺牙观察患病率偏倚因素的Meta分析与系统评价
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Sella Turcica Morphology on Cephalometric Radiographs and Dental Abnormalities-Is There Any Association?-Systematic Review.鞍区形态在侧位颅射线片和牙齿畸形中的表现—两者之间存在关联吗？—系统综述。
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