McArdle Louis W, Renton Tara F
Department of Oral Surgery, GKT Dental Institute, Guy's Hospital, London Bridge, London SE1 9RT, UK.
Br J Oral Maxillofac Surg. 2006 Feb;44(1):42-5. doi: 10.1016/j.bjoms.2005.07.025. Epub 2005 Oct 5.
Distal cervical caries (DCC) in mandibular second molar teeth are responsible for the removal of up to 5% of all mandibular third molars. Our aim was to identify the clinical features of these patients.
We evaluated the records of 100 patients who had 122 mandibular third molars removed because of distal cervical caries in the second molar.
Eighty-two percent of third molars had a mesial angulation of between 40 degrees and 80 degrees. The peak age for removal of third molars was 5 years later than in other studies and patients had better dental health than average. The incidence of distal cervical caries DCC has been shown to increase with age.
Distal cervical caries is a late phenomenon and has been reported only in association with impacted third molars. The early or prophylactic removal of a partially erupted mesio-angular third molar could prevent distal cervical caries forming in the mandibular second molar.
下颌第二磨牙远中颈部龋（DCC）导致所有下颌第三磨牙拔除病例中高达5%的病例。我们的目的是确定这些患者的临床特征。
我们评估了100例因第二磨牙远中颈部龋而拔除122颗下颌第三磨牙的患者记录。
82%的第三磨牙近中倾斜角度在40度至80度之间。第三磨牙拔除的高峰年龄比其他研究晚5年，且患者的牙齿健康状况优于平均水平。远中颈部龋（DCC）的发病率已被证明随年龄增长而增加。
远中颈部龋是一种晚期现象，仅在与阻生第三磨牙相关的情况下被报道。早期或预防性拔除部分萌出的近中倾斜第三磨牙可预防下颌第二磨牙形成远中颈部龋。
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