Halling A, Björn A L
Swed Dent J. 1986;10(6):233-42.
The periodontal status was studied by means of orthopantomography in one prospective and one cross-sectional cohort study of representative samples of dentate middle aged women living in Gothenburg. The proximal bone height was assessed by measurements on the roentgenographs by aid of a five degree scale. Since loss of teeth in middleaged persons often is due to periodontal disease, also tooth loss was registered. The prospective study: Eight hundred and sixty-two women belonging to age strata 38, 46, 50, 54 and 60 years and born on certain dates were examined in 1968 and were re-examined in 1980. The average number of teeth lost during the 12 year observation period varied from 1.7 to 3.3 in the different age strata and the average alveolar bone height had been reduced in all age groups. About 83 per cent of the participants had a mean bone height of the same magnitude at both occasions, while about 5 per cent showed a considerable progression of bone loss. The percentage of individuals showing greater bone loss was the lowest among those who were 50 years old at the first examination. The progression of bone loss during the observation period did not seem to be related to the initial periodontal status. The cross-sectional cohort study included four samples, viz. 38 and 50 years old women from each of the 1968 and 1980 examinations. Some improvement of the dental state had occurred from 1968 to 1980 as evidenced from the number of remaining teeth. The 38 year old women had on an average 2.1 teeth more in 1980 compared to participants of the same age 12 years earlier. In 50 year old women the corresponding figure was 2.5 teeth. The percentage of 38 year old women with greater than or equal to 22 remaining teeth had increased from about 73 to 90 per cent in the 1968 and 1980 cohorts respectively. The corresponding figures for 50 year old women were 48 per cent in 1968 and 67 per cent in 1980. Also the periodontal state was somewhat better in the 1980 cohorts: More than 65 per cent of the women in the 38 year cohort had only slight bone loss in 1980 compared to 49 per cent in the 1968 one. In the 50 year old cohort 32 per cent of the women showed only a slight bone loss in 1980 compared to 23 per cent in 1968.
在一项针对居住在哥德堡的有牙中年女性代表性样本的前瞻性队列研究和一项横断面队列研究中，通过曲面断层摄影术研究了牙周状况。借助五度量表对X线片进行测量来评估近中骨高度。由于中年人牙齿缺失通常是由牙周疾病引起的，因此也记录了牙齿缺失情况。前瞻性研究：1968年对862名年龄在38、46、50、54和60岁且在特定日期出生的女性进行了检查，并于1980年进行了复查。在12年的观察期内，不同年龄组平均牙齿缺失数量从1.7颗到3.3颗不等，并且所有年龄组的牙槽骨平均高度都有所降低。约83% 的参与者在两次检查时的平均骨高度处于相同水平，而约5% 的参与者显示出明显的骨质流失进展。在首次检查时年龄为50岁的人群中，骨质流失更严重的个体比例最低。观察期内骨质流失的进展似乎与初始牙周状况无关。横断面队列研究包括四个样本，即分别来自1968年和1980年检查的38岁和50岁女性。从剩余牙齿数量来看，1968年至1980年期间牙齿状况有所改善。1980年，38岁女性平均比12年前同年龄参与者多2.1颗牙齿。在50岁女性中，相应数字为2.5颗牙齿。在1968年和1980年的队列中，剩余牙齿数大于或等于22颗的38岁女性比例分别从约73% 增加到了90%。50岁女性的相应数字在1968年为48%，在1980年为67%。1980年队列中的牙周状况也稍好一些：1980年，38岁队列中超过65% 的女性仅有轻微骨质流失,而1968年这一比例为49%。在50岁队列中，1980年32% 的女性仅有轻微骨质流失，而1968年为23%。
