Konde Sapna, Sri Darshini C S, Agarwal Manisha, Peethambar Preetha
Department of Pedodontics and Preventive Dentistry, AECS Maaruti College of Dental Sciences and Research Institute, Bengaluru, Karnataka, India.
Contemp Clin Dent. 2018 Sep;9(Suppl 2):S305-S308. doi: 10.4103/ccd.ccd_291_18.
Preeruptive caries are an abnormal, well-circumscribed, radiolucent area, occurring within the coronal dentinal tissue close to the dentinoenamel junction of unerupted teeth. OPGs are commonly taken in children for assessing the dental age and eruption sequence. It can be used as a good diagnostic source for detection of PEIR defects.
The aim of this study is to determine the prevalence of Preeruptive intracoronal dentin radiolucencies in unerupted permanent teeth from orthopantomogram.
A total of 1000 standard orthopantomographs of children below 12 years of age were collected and examined.
The OPGs were examined for PIER defects in the unerupted teeth. The prevalence of PEIR defects was assessed with respect to age, sex, tooth, and the arch involved.
The data obtained were tabulated and analyzed. The prevalence was calculated in percentage.
The participant prevalence was 13.6%. The teeth prevalence was 1.20%. The majority (38.9%) of defects were seen in the in the mandibular first premolar. Almost half of the lesions were located on the mesial side (52.3%), with a size less than one-third of dentine thickness (53%).
PIER defects constitutes an important part of anomalies associated with unerupted teeth and thus needs a proper understanding of its prevalence, etiology, manifestations, and complications. These defects are usually overlooked by clinicians while interpreting radiographs; however, it is of utmost importance to promptly diagnose these defects thus preventing further complications.
萌出前龋是一种异常的、边界清晰的透射区，出现在未萌出牙靠近牙本质釉质界的冠部牙本质组织内。口腔全景片（OPG）常用于儿童评估牙龄和萌出顺序。它可作为检测萌出前牙内放射透光性缺损（PEIR）的良好诊断依据。
本研究旨在确定口腔全景片中未萌出恒牙萌出前牙冠内牙本质放射透光性缺损的患病率。
收集并检查了1000张12岁以下儿童的标准口腔全景片。
检查口腔全景片上未萌出牙的PEIR缺损情况。根据年龄、性别、牙齿和受累牙弓评估PEIR缺损的患病率。
将获得的数据制成表格并进行分析。患病率以百分比计算。
参与者患病率为13.6%。牙齿患病率为1.20%。大多数缺损（38.9%）见于下颌第一前磨牙。几乎一半的病变位于近中侧（52.3%），大小小于牙本质厚度的三分之一（53%）。
PEIR缺损是与未萌出牙相关异常的重要组成部分，因此需要正确了解其患病率、病因、表现和并发症。临床医生在解读X线片时通常会忽略这些缺损；然而，及时诊断这些缺损以防止进一步并发症至关重要。
