Fukuda Cassia Tiemi, Carneiro Silvia Rosana Soares, Alves Vanessa Túbero Euzébio, Pustiglioni Francisco Emílio, De Micheli Giorgio
Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo, Brazil.
Bull Tokyo Dent Coll. 2008 Aug;49(3):99-106. doi: 10.2209/tdcpublication.49.99.
The aim of the present cross-sectional investigation was to evaluate percentage of bone loss in patients who had been one year under periodontal maintenance at the Department of Periodontology, Faculty of Dentistry, University of São Paulo by radiographic analysis. Complete sets of periapical radiographs provided data regarding percentage of alveolar bone loss, which was correlated with arches, tooth group and proximal sites. The sample consisted of 27 men and 53 women ranging in age from 16 to 85 years (mean: 48.3 years). A total of 1,120 periapical radiographs (1,970 teeth) were digitized and analyzed with the Image Tool software (University of Texas Health Science Center). Bone loss was defined as when the distance between the cemento-enamel junction and the alveolar bone crest was greater than 2 mm. Two examiners (p<0.0001) performed radiographic measurements of bone loss. The Greenhouse-Geisser normality test and a univariate analysis of variance were used for statistical analysis. Mean bone loss was 20.60% (+/-12.12). The highest level of bone loss was observed on the distal surface and in the upper arch, as well as in the upper incisors and molars.
本横断面研究的目的是通过影像学分析，评估在圣保罗大学牙科学院牙周病科接受牙周维护治疗一年的患者的骨质流失百分比。全套根尖片提供了有关牙槽骨流失百分比的数据，该数据与牙弓、牙组和邻面部位相关。样本包括27名男性和53名女性，年龄在16至85岁之间（平均48.3岁）。总共1120张根尖片（1970颗牙齿）被数字化，并使用Image Tool软件（德克萨斯大学健康科学中心）进行分析。骨质流失定义为牙骨质-釉质界与牙槽嵴顶之间的距离大于2毫米。两名检查者（p<0.0001）进行了骨质流失的影像学测量。采用Greenhouse-Geisser正态性检验和单因素方差分析进行统计分析。平均骨质流失为20.60%（±12.12）。在远中面、上牙弓以及上切牙和磨牙中观察到最高水平的骨质流失。
