Primary failure of eruption (PFE).
Primary failure of eruption (PFE).
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DOI：
10.1136/bcr-2015-209703
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发表时间：
2015-04-01
期刊：
影响因子：
0.9
通讯作者：
Bharti, Harsh Vibhor
中科院分区：
文献类型：
--
作者：
Jain, Upendra;Kallury, Amitabh;Bharti, Harsh Vibhor
一名15岁的男孩出现咀嚼困难。临床检查发现双侧后牙开咬，前牙深咬，多颗后牙被埋（图1-3）。OPG（正曲面体层摄影）X线片显示前磨牙和磨牙被淹没，无关节强直或其他机械性阻塞（图4）。该病例被诊断为原发性发疹失败（PFE）。PFE是一种非综合征性萌出障碍，其中恒牙在没有任何机械阻塞的情况下未能萌出。1在这些病例中，即使乳牙的牙槽骨和牙根吸收正常，恒牙也不会沿着萌出的路径生长。后牙更容易受到影响。这种情况表现为后牙开咬，尽管正常的垂直面部生长，但随着时间的推移而增加。
A 15-year-old boy presented with difficulty chewing. Clinical examination revealed a bilateral posterior open bite with anterior deep bite and multiple submerged posterior teeth (figures 1–3). OPG (orthopantomogram) X-ray revealed submerged premolars and molars, in absence of ankylosis or other mechanical obstruction (figure 4). The case was diagnosed as primary failure of eruption (PFE). PFE is a non-syndromic eruption disorder where the permanent teeth fail to erupt in the absence of any mechanical obstruction. 1 In these cases, even though resorption of the alveolar bone and the roots of the deciduous teeth is normal, the permanent teeth do not follow the eruption path. The posterior teeth are more frequently affected. This condition manifests as a posterior open bite, which increases with time despite normal vertical facial growth.