Fisher Elda L, Garaas Rachel, Blakey George H, Offenbacher Steven, Shugars Daniel A, Phillips Ceib, White Raymond P
Department of Oral and Maxillofacial Surgery, University of North Carolina School of Dentistry, Chapel Hill, NC, USA.
J Oral Maxillofac Surg. 2012 May;70(5):1016-22. doi: 10.1016/j.joms.2011.10.016. Epub 2012 Feb 9.
To assess the prevalence of caries experience and periodontal pathology on third molar teeth compared with first and second molars and teeth more anterior from subjects who had data collected over time in a longitudinal clinical study.
Healthy subjects with 4 asymptomatic third molars and data for at least 4 years after enrollment were included in these analyses. The presence or absence of caries experience on the occlusal surface of the third molars and any surface of the first or second molars was assessed using a visual-tactile caries examination. Full mouth periodontal probing, 6 sites per tooth, was conducted as a measure of clinical periodontal status. The primary outcome measures were at least 1 periodontal probing depth of at least 4 mm versus none, and caries experience versus no caries experience. The prevalence of caries experience and periodontal pathologic findings at follow-up and the relationship of the occurrence between the third molars and teeth more anterior in the mouth were examined using McNemar's statistics.
The follow-up was a median of 6.9 years (interquartile range 4.6 to 7.7 years) for 179 subjects, with a mean age of 29 years. More subjects were female (54%) and white (80%). At follow-up, 85% of the subjects had caries experience detected on the first or second molars, and only 50% had a third molar affected. In contrast, at follow-up, the presence of at least 1 periodontal probing depth of at least 4 mm was marginally more prevalent on the third molars than on the first or second molars (56% and 50%, respectively). Fewer subjects had third molars free of caries experience and periodontal pathology at follow-up compared with at enrollment (28% versus 38%, respectively).
The prevalence of both third molar caries experience and third molar periodontal pathology increased from baseline to the follow-up examination. At follow-up, the prevalence of caries experience was greater on the first or second molars than on the third molars, and periodontal pathology were greater on the third molars than on the more anterior teeth.
在一项纵向临床研究中，评估有随时间收集数据的受试者第三磨牙与第一、第二磨牙及更靠前牙齿相比，龋病经历和牙周病理情况的患病率。
纳入有4颗无症状第三磨牙且入组后至少有4年数据的健康受试者进行这些分析。使用视诊-触诊龋病检查评估第三磨牙咬合面以及第一或第二磨牙任何表面的龋病经历情况。对全口牙齿进行牙周探诊，每颗牙6个位点，作为临床牙周状况的一项测量指标。主要结局指标为至少有1个牙周探诊深度≥4mm与无该情况，以及有龋病经历与无龋病经历。使用McNemar统计学方法检查随访时龋病经历和牙周病理结果的患病率，以及口腔中第三磨牙与更靠前牙齿之间发病情况的关系。
179名受试者的随访时间中位数为6.9年（四分位间距4.6至7.7年），平均年龄29岁。女性受试者（54%）和白人受试者（80%）更多。随访时，85%的受试者在第一或第二磨牙上检测到有龋病经历，只有50%的第三磨牙受影响。相比之下，随访时，至少有1个牙周探诊深度≥4mm的情况在第三磨牙上比在第一或第二磨牙上略更常见（分别为56%和50%）。与入组时相比，随访时无龋病经历和牙周病理情况的第三磨牙的受试者更少（分别为28%和38%）。
从基线到随访检查，第三磨牙龋病经历和第三磨牙牙周病理情况的患病率均有所增加。随访时，第一或第二磨牙的龋病经历患病率高于第三磨牙，而第三磨牙的牙周病理情况患病率高于更靠前的牙齿。
