Aruna U, Annamalai P R, Nayar Sanjna, Bhuminathan S
Reader, Department of Prosthodontics, Sree Balaji Dental College and Hospital , Chennai, India .
Reader, Department of Orthodontics, Chettinad Dental College and Hospital , Chennai, India .
J Clin Diagn Res. 2014 Apr;8(4):ZD14-6. doi: 10.7860/JCDR/2014/8606.4306. Epub 2014 Apr 15.
Tooth eruption is an intricate and complex process which can fail to occur due to several reasons. Failure of tooth eruption in the absence of any systemic condition or any obstruction in the eruptive pathway can be attributed to lack of inherent eruptive potential of the tooth, termed as Primary Failure of Eruption (PFE). This is a rare condition and usually has a genetic etiology. Here we report a rare case in which there is Primary Failure of Eruption in the mandibular right quadrant. There is also mechanical failure of eruption of maxillary right canine and supernumerary teeth palatal to the maxillary central incisors. This association of supernumerary teeth and mechanical failure of eruption along with primary failure of eruption has not been reported so far. Proper diagnosis is very important in cases of Primary Failure of Eruption. There are several diagnostic criteria to identify these cases. Since these cases do not respond to orthodontic force, early diagnosis is of essential importance.
牙齿萌出是一个复杂且 intricate 的过程，可能由于多种原因而未能发生。在没有任何全身状况或萌出途径存在任何阻塞的情况下，牙齿萌出失败可归因于牙齿缺乏内在的萌出潜力，称为原发性萌出失败（PFE）。这是一种罕见的情况，通常具有遗传病因。在此，我们报告一例罕见病例，其中下颌右象限存在原发性萌出失败。上颌右尖牙以及上颌中切牙腭侧多生牙的萌出也存在机械性失败。迄今为止，尚未报道过这种多生牙与萌出机械性失败以及原发性萌出失败的关联。在原发性萌出失败的病例中，正确诊断非常重要。有多种诊断标准来识别这些病例。由于这些病例对正畸力无反应，早期诊断至关重要。
