TOOTH FRACTURES--INCIDENCE,RISK INDICATORS, OUTCOMES

描述：本申请描述了三项有关牙齿的研究 骨折，一种估计影响5%成年人的疾病 每年一次。尽管这种现象发生得比较频繁，但它已经 没有进行过任何详细的检查。因此，没有直接的 对这种情况的发生率的估计。此外，风险指标 对于牙齿断裂，人们知之甚少。最后，给出了这些数据的分布情况 折断的牙齿接受治疗，以及这些治疗的短期结果 治疗方法完全未知。这种严重的信息匮乏 尽管如此，很大一部分修复工作仍在全国进行S 牙科实践包括为了预防的目的放置牙冠 牙齿折断，占预计支出10亿美元 每年1美元。 这项拟议的研究检查了两个成年人的牙齿断裂-- 在俄勒冈州波特兰参加牙科医疗保健组织的人，以及驻扎在 英国“金融时报”德克萨斯州胡德市在这两个地点，对发病率的初步估计 通过记录所有牙齿类型来确定牙齿整体断裂和牙齿类型断裂 在这些人群中，牙齿断裂持续6个月和3个月， 分别进行了分析。每个事件将记录大约400个断裂事件 地点。骨折尖端完全骨折的一组风险指标 后牙将在相同的为期12个月的病例对照研究中进行检查。 在每个地点将选择400例病例和400名匹配的对照 来自相同患者的牙齿，以及400名部分匹配的对照组患者。 不同临床、行为、人口学、 并将确定利用变量。骨折的严重程度和 骨折治疗的短期结果由发病率决定。 病例对照研究资料及对骨折治疗的分析。 关于风险指标、发生率、严重性和短期的信息 这项研究将产生的结果对后续研究至关重要 预防牙齿折裂的方法评价。不仅是因为 牙医没有具体的、绝对的和/或作为依据的信息 对个别患者的风险估计，但该行业也缺乏 评估当前政策适当性的依据信息 预防骨折的方法。

DESCRIPTION: This application describes three related studies of tooth fracture, a condition that affects an estimated five percent of adults annually. Despite its relatively frequent occurrence, the phenomenon has not been examined in any detail. Consequently, there are no direct estimates of the incidence of this condition. In addition, risk indicators for tooth fracture are poorly understood. Finally, the distributions of treatments fractured teeth receive, and the short-term outcomes of these treatments are completely unknown. This profound lack of information notwithstanding, a substantial portion of re-restoration in the nation s dental practices consists of placing crowns for the purpose of preventing tooth fracture, accounting for estimated expenditures of one billions dollars annually. The proposed studies examine tooth fracture in two adult populations-- enrollees in a dental HMO in Portland, OR, and army personnel stationed at Ft. Hood, TX. At both sites, preliminary estimates of the incidence of tooth fracture overall and by tooth type will be established by noting all tooth fracturing in these populations over periods of 6 and 3 months, respectively. Approximately 400 fracture events will be recorded at each site. A group of risk indicators for the complete fracture of a cusp of a posterior tooth will be examined in identical 12-month case-control studies. At each site, 400 cases will be selected together with 400 matched control teeth from the same patients, and 400 partially matched control patients. Differences in exposure for a variety of clinical, behavioral, demographic, and utilization variables will be determined. The severity of fractures and short-term outcomes of treatment for fractures are determined from incidence and case-control study data and analysis of port-fracture treatment. The information on risk indicators, incidence, severity and short-term outcomes that will result from this study is crucial for subsequent evaluation of approaches to the prevention of tooth fracture. Not only do dentists have no information upon which to base specific absolute and/or risk estimates for individual patients, but also the profession lacks the information upon which to base assessments of the appropriateness of current approaches to the prevention of fracture.