Christersson L A, Grossi S G, Dunford R G, Machtei E E, Genco R J
Department of Oral Biology, School of Dental Medicine, State University of New York, Buffalo 14214.
J Dent Res. 1992 Jul;71(7):1425-30. doi: 10.1177/00220345920710071401.
The aim of this study was to determine the levels of plaque and subgingival calculus accumulation and to evaluate their correlations with periodontal disease, as well as to evaluate the correlations with race, age, and gender in an attempt to identify risk indicators for plaque and calculus formation. A total of 508 adults 25-73 years of age was examined, and plaque assessment, gingival bleeding assessment, probing pocket depth, and attachment levels were determined. The mean percent visible plaque was 73.5% (range, 8.3-100%), mean percent of bleeding surfaces 38.5% (range, 0-100%), and the mean percent teeth with subgingival calculus 39.6% (range, 0-100%). The mean probing pocket depth in the group was 2.5 +/- 0.6 mm (SD), and mean clinical attachment loss was 2.1 +/- 1.1 mm. The majority (63%) were classified as having "Moderate" periodontal disease, 7% were "Healthy", and the remaining 30% had "Established" periodontal disease. Plaque and calculus showed statistically significant relationships to the three disease categories (p less than 0.001). Multiple step-wise regression analyses on the correlations between plaque and periodontal disease, race, age, and gender resulted in an overall correlation coefficient of r = 0.25 (p less than 0.001). Disease status ("Established") contributed most (p = 0.003), followed by race (Blacks; p = 0.015), gender (Males; p = 0.022), and age (55-73 yr; p = 0.022), to the correlation with plaque. For subgingival calculus, the overall correlation coefficient was r = 0.44 (p less than 0.001). However, only two of the variables--namely, disease status (p less than 0.001) followed by race (p = 0.017)--showed statistically significant correlations.(ABSTRACT TRUNCATED AT 250 WORDS)
本研究的目的是确定菌斑和龈下牙石的堆积水平，评估它们与牙周疾病的相关性，以及评估与种族、年龄和性别的相关性，以试图确定菌斑和牙石形成的风险指标。共检查了508名年龄在25至73岁的成年人，并确定了菌斑评估、牙龈出血评估、探诊袋深度和附着水平。可见菌斑的平均百分比为73.5%（范围为8.3%-100%），出血表面的平均百分比为38.5%（范围为0%-100%），有龈下牙石的牙齿平均百分比为39.6%（范围为0%-100%）。该组的平均探诊袋深度为2.5±0.6毫米（标准差），平均临床附着丧失为2.1±1.1毫米。大多数人（63%）被归类为患有“中度”牙周疾病，7%为“健康”，其余30%患有“确诊”牙周疾病。菌斑和牙石与这三种疾病类别显示出统计学上的显著关系（p<0.001）。对菌斑与牙周疾病、种族、年龄和性别的相关性进行的多元逐步回归分析得出总体相关系数r = 0.25（p<0.001）。疾病状态（“确诊”）对与菌斑的相关性贡献最大（p = 0.003），其次是种族（黑人；p = 0.015）、性别（男性；p = 0.022）和年龄（55至73岁；p = 0.022）。对于龈下牙石，总体相关系数为r = 0.44（p<0.001）。然而，只有两个变量——即疾病状态（p<0.001），其次是种族（p = 0.017）——显示出统计学上的显著相关性。（摘要截短于250字）
