Garaas Rachel, Moss Kevin L, Fisher Elda L, Wilson Graham, Offenbacher Steven, Beck James D, White Raymond P
Department of Oral and Maxillofacial Surgery, University of North Carolina, Chapel Hill, NC, USA.
J Oral Maxillofac Surg. 2011 Feb;69(2):463-70. doi: 10.1016/j.joms.2010.10.021. Epub 2010 Dec 17.
To assess the prevalence of periodontal pathology and caries experience in visible third molars, as well as the relationship of these findings to periodontal pathology and caries experience in teeth more anterior in the mouth.
Data were from 6,793 Dental Atherosclerosis Risk in Communities participants who underwent a clinical examination for periodontal disease and coronal caries experience and who retained at least 1 visible third molar. Outcome variables were the detection of periodontal pathology or coronal caries experience on visible third molars and on teeth more anterior in the mouth (non-third molars). Periodontal probing depths at least 4 mm (PD4+) and clinical attachment levels at least 3 mm (CAL3+) were indicator variables for periodontal pathology. At least 1 carious/decayed coronal surface or filled coronal surface was an indicator variable for caries experience. Outcomes for third molar and non-third molar teeth were compared by descriptive statistics and χ(2) tests with statistical significance set at P < .05.
A third of the 6,793 Dental Atherosclerosis Risk in Communities subjects, who averaged 62 years of age, had at least 1 visible third molar. Subjects were more likely to have at least 1 third molar CAL3+ as compared with at least 1 third molar PD4+: 78% versus 61%. PD4+ and CAL3+ were significantly more prevalent among non-third molars as compared with third molars (P < .01). Most subjects, 73%, had restorations on visible third molars and non-third molars, and over two-thirds of subjects had a visible third molar with caries experience and periodontal pathology. Fewer than 2% of subjects had third molars free of caries experience or periodontal pathology.
Most subjects had clinical evidence of caries experience or periodontal pathology on visible third molars; few subjects had visible third molars that were disease free. Subjects with periodontal pathology or caries experience on third molars were significantly more likely to have these findings detected on teeth more anterior in the mouth.
评估可见第三磨牙的牙周病变患病率和龋病经历，以及这些结果与口腔中更靠前牙齿的牙周病变和龋病经历之间的关系。
数据来自6793名社区牙科动脉粥样硬化风险研究参与者，这些参与者接受了牙周疾病和冠龋经历的临床检查，且保留至少1颗可见第三磨牙。观察变量为可见第三磨牙以及口腔中更靠前牙齿（非第三磨牙）上牙周病变或冠龋经历的检测情况。牙周探诊深度至少4mm（PD4+）和临床附着水平至少3mm（CAL3+）是牙周病变的指示变量。至少1个龋坏/龋蚀冠面或充填冠面是龋病经历的指示变量。通过描述性统计和χ²检验比较第三磨牙和非第三磨牙的结果，设定统计学显著性为P < 0.05。
6793名社区牙科动脉粥样硬化风险研究受试者平均年龄62岁，其中三分之一至少有1颗可见第三磨牙。与至少1颗第三磨牙CAL3+相比，受试者更有可能至少有1颗第三磨牙PD4+：分别为78%和61%。与第三磨牙相比，PD4+和CAL3+在非第三磨牙中显著更常见（P < 0.01）。大多数受试者（73%）在可见第三磨牙和非第三磨牙上有修复体，超过三分之二的受试者有可见第三磨牙伴有龋病经历和牙周病变。不到2%的受试者第三磨牙无龋病经历或牙周病变。
大多数受试者可见第三磨牙有龋病经历或牙周病变的临床证据；很少有受试者的可见第三磨牙无疾病。第三磨牙有牙周病变或龋病经历的受试者在口腔中更靠前牙齿上更有可能检测到这些情况。
