Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Mahidol University, 6 Yothi rd, Thung Phaya Thai, Ratchathewi, Bangkok, 10400, Thailand.
Department of Anatomy, Faculty of Dentistry, Mahidol University, 6 Yothi rd, Thung Phaya Thai, Ratchathewi, Bangkok, 10400, Thailand.
Clin Oral Investig. 2024 Apr 27;28(5):279. doi: 10.1007/s00784-024-05677-4.
Pre-eruptive intramural resorption (PEIR) is defined as an abnormal, well-circumscribed radiolucency within the coronal dentin of the tooth, which is often overlooked in plain radiographs. This study aimed to investigate the prevalence of PEIR and its related factors using cone-beam computed tomography (CBCT).
CBCT images of 590 unerupted teeth were evaluated for the presence of PEIR, location of PEIR, number of lesions in the affected tooth, PEIR score, tooth angulation, tooth position, and pericoronal space. Binary logistic tests were used to analyze the association between the characteristics of PEIR and the patient's demographic data and related factors.
The tooth prevalence of PEIR was 13.6% among unerupted teeth. However, it was noteworthy that 19.2% of the unerupted teeth with PEIR were planned to be kept. PEIR was significantly associated with transverse (p = 0.020), inverted-angulated (p = 0.035), and centrally-positioned teeth (p = 0.043). The severity of PEIR was more pronounced in teeth with distal (p = 0.019), lingual (p = 0.023), or inverted-angulated (p = 0.040) positions, and in the absence of pericoronal space (p = 0.036).
PEIR should be suspected in transverse, inverted-angulated, centrally positioned unerupted teeth, particularly in molars, with no pericoronal space. Further monitoring through CBCT is recommended in such cases.
The management of unerupted teeth does not always involve surgical removal. Instead, they could be utilized for artificial eruption or tooth transplantation. The present study emphasizes the significance of early detection of PEIR. Clinical recommendations for screening PEIR in unerupted teeth are also proposed, which can be applied to routine plain radiographs.
萌出前牙内吸收（PEIR）被定义为牙冠牙本质内的一种异常、边界清晰的透光区，在普通射线照片中经常被忽视。本研究旨在使用锥形束 CT（CBCT）调查 PEIR 的患病率及其相关因素。
评估 590 颗未萌出牙齿的 CBCT 图像是否存在 PEIR、PEIR 的位置、受累牙的病变数量、PEIR 评分、牙倾斜度、牙位置和牙周间隙。使用二项逻辑检验分析 PEIR 特征与患者人口统计学数据和相关因素之间的关联。
未萌出牙齿中 PEIR 的牙齿患病率为 13.6%。然而，值得注意的是，19.2%的有 PEIR 的未萌出牙齿计划保留。PEIR 与横向（p=0.020）、倒置倾斜（p=0.035）和中央位置的牙齿显著相关（p=0.043）。PEIR 的严重程度在远中（p=0.019）、舌侧（p=0.023）或倒置倾斜（p=0.040）位置以及没有牙周间隙的牙齿中更为明显（p=0.036）。
在横向、倒置倾斜、中央位置的未萌出牙齿中应怀疑存在 PEIR，特别是在没有牙周间隙的磨牙中。在这种情况下，建议通过 CBCT 进行进一步监测。
未萌出牙齿的处理并不总是需要手术切除。相反，它们可以用于人工萌出或牙齿移植。本研究强调了早期发现 PEIR 的重要性。还提出了针对未萌出牙齿筛查 PEIR 的临床建议，可应用于常规普通射线照片。
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