Punwutikorn J, Waikakul A, Ochareon P
Department of Surgery, Faculty of Dentistry, Mahidol University, Bangkok, Thailand.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1999 Mar;87(3):305-10. doi: 10.1016/s1079-2104(99)70213-1.
The purpose of this study was to analyze the occurrence of symptoms in patients with unerupted mandibular third molars and to investigate the associated pathoses.
Through a review of clinical records and periapical radiographs of completely unerupted and partially erupted mandibular third molars, a retrospective study was carried out. For each axial inclination, symptoms and pathoses associated with these teeth were analyzed. Statistical differences were tested by chi square analysis.
Most of the patients were between 16 and 30 years of age. In 83% of cases, the mandibular third molars were partially erupted; in the other 17% of cases, the mandibular third molars were completely unerupted. Pain was the most frequent symptom in both groups. Pericoronitis was found mostly in third molar teeth with vertical and distal inclinations (P< .05), whereas caries was found mainly in mesially tipped third molars (P < .05).
Most of the patients were in the third decade of life. Partially erupted mandibular third molars had more symptoms than completely unerupted teeth. Pain and pericoronitis were the most common problems in patients with unerupted third molars.
本研究旨在分析下颌第三磨牙未萌出患者的症状发生情况，并调查相关病变。
通过回顾完全未萌出和部分萌出的下颌第三磨牙的临床记录和根尖片，进行了一项回顾性研究。针对每个轴向倾斜度，分析了与这些牙齿相关的症状和病变。采用卡方分析检验统计学差异。
大多数患者年龄在16至30岁之间。83%的病例中，下颌第三磨牙部分萌出；在其他17%的病例中，下颌第三磨牙完全未萌出。两组中疼痛都是最常见的症状。冠周炎主要见于垂直和远中倾斜的第三磨牙（P <.05），而龋齿主要见于近中倾斜的第三磨牙（P <.05）。
大多数患者处于生命的第三个十年。部分萌出的下颌第三磨牙比完全未萌出的牙齿有更多症状。疼痛和冠周炎是未萌出第三磨牙患者最常见的问题。
