Hand J S, Hunt R J, Kohout F J
Department of Preventive and Community Dentistry, University of Iowa, Iowa City.
Community Dent Oral Epidemiol. 1991 Feb;19(1):48-51. doi: 10.1111/j.1600-0528.1991.tb00105.x.
The prevalence of missing teeth has been described for US adults, but little is known about the incidence of tooth loss in any segment of the population. This study investigated the 5-yr incidence of tooth loss in a random sample of Iowans aged 65 yr and older residing in two rural counties. These people had an average of 20 teeth at baseline and approximately 40% lost at least one tooth in the subsequent 5 yr. The incidence of tooth loss was highest for mandibular molars and lowest for mandibular canines. Men were more likely than women to lose teeth. Although we were able to identify a number of statistically significant potential risk factors for tooth loss, the multivariate models that incorporated all these factors were not good predictors of which people were at highest risk for tooth loss.
美国成年人牙齿缺失的患病率已有相关描述，但对于任何人群中牙齿脱落的发生率却知之甚少。本研究调查了居住在两个乡村县的65岁及以上爱荷华州人的随机样本中牙齿脱落的5年发生率。这些人在基线时平均有20颗牙齿，在随后的5年中约40%的人至少掉了一颗牙。下颌磨牙的牙齿脱落发生率最高，下颌尖牙最低。男性比女性更容易掉牙。虽然我们能够确定一些在统计学上有显著意义的牙齿脱落潜在风险因素，但纳入所有这些因素的多变量模型并不能很好地预测哪些人牙齿脱落风险最高。
