McDermott R E, Hoover J N, Komiyama K
Dental Epidemiology Research Unit, College of Dentistry, University of Saskatchewan, Saskatoon.
J Can Dent Assoc. 1991 Jun;57(6):505-8.
There have been many studies reporting on the prevalence of root surface caries in elderly populations, but there is little consistency in these reports concerning the associated risk factors. In the present study, intraoral examinations were carried out on adult patients (age range 22 to 91 years, mean age 57.9) on the acute care wards of a teaching hospital. Of the 103 patients examined, 23.3% exhibited carious lesions on root surfaces, these lesions occurring more frequently in males than in females, and more frequently in the 60 years and older age groups. Forty-five per cent of all root lesions recorded were found on the buccal or facial root surfaces of teeth exhibiting root surface caries. Individuals exhibiting root surface caries had more surfaces with gingival recession and loss of attachment greater than or equal to 3mm, more retained roots, higher DMFT values, and less teeth. However, statistically significant relationships were not obtained between root surface caries and a) coronal caries, b) dental plaque, c) calculus, d) bleeding on probing, and e) probing depth greater than or equal to 4mm. Thirty-three strains of Actinomyces viscosus were isolated from plaque samples taken from root surface lesions compared to 21 strains isolated from intact root surfaces.
已有许多研究报告了老年人群根面龋的患病率，但这些报告在相关危险因素方面几乎没有一致性。在本研究中，对一家教学医院急症病房的成年患者（年龄范围22至91岁，平均年龄57.9岁）进行了口腔检查。在检查的103名患者中，23.3%的患者根面有龋损，这些龋损在男性中比在女性中更常见，并且在60岁及以上年龄组中更常见。在所有记录的根面龋损中，45%发现于有根面龋的牙齿的颊侧或面侧根面。有根面龋的个体有更多牙龈退缩且附着丧失大于或等于3mm的牙面、更多的留存牙根、更高的龋失补牙指数（DMFT）值以及更少的牙齿。然而，在根面龋与以下因素之间未获得统计学上的显著关系：a）冠龋、b）牙菌斑、c）牙石、d）探诊出血以及e）探诊深度大于或等于4mm。从根面龋损处采集的菌斑样本中分离出33株黏性放线菌，而从完整根面分离出21株。
