牙周膜可见度（PLV）：验证PLV以确定成年状态。
Periodontal Ligament Visibility (PLV): validation of PLV to determine adult status.
作者信息
Lucas V S, McDonald F, Andiappan M, Roberts G
机构信息
King's College London Dental Institute, Guy's Hospital, London, United Kingdom.
出版信息
J Forensic Odontostomatol. 2017 Dec 1;35(2):90-96.
BACKGROUND
Gradual obliteration of the Periodontal Ligament Visibility (PLV) of lower third molars indicates increasing age. This is used to help determine whether or not an age disputed subject is above or below the 18 year threshold.
AIM
The main focus was to determine, in test subjects of known age, whether the PLV system used 'blind' is able to reliably indicate whether the subject was a child (age < 18 years) or adult (age > 18).
MATERIALS AND METHODS
A total of 250 normal subjects in the age range 16 to 26 years, from the archives of Guy's Hospital in London, UK, were used to validate the system of PLV. The radiographic assessment of PLV1 was used to categorize four grades of PLV.
RESULTS
It was found that for both females and males PLV-C and PLV-D gave very high probabilities (p = 1.000) of the test subjects being of adult status.
CONCLUSION
Periodontal Ligament Visibility has the potential to play an important part in the assessment of age disputed asylum seekers who look adult and claim to be children.
背景
下颌第三磨牙牙周膜可见度（PLV）的逐渐消失表明年龄增长。这用于帮助确定年龄有争议的个体是否超过或低于18岁的阈值。
目的
主要重点是在已知年龄的受试对象中，确定使用“盲法”的PLV系统是否能够可靠地表明受试对象是儿童（年龄<18岁）还是成人（年龄>18岁）。
材料与方法
从英国伦敦盖伊医院的档案中选取了250名年龄在16至26岁之间的正常受试者，用于验证PLV系统。使用PLV1的影像学评估将PLV分为四个等级。
结果
发现对于女性和男性，PLV-C和PLV-D表明受试对象为成人状态的概率非常高（p = 1.000）。
结论
牙周膜可见度有可能在评估看似成年但声称是儿童的年龄有争议的寻求庇护者方面发挥重要作用。
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