口腔不良习惯与牙隐裂发病之间的病例对照研究

目的:研究口腔不良习惯与牙隐裂发病之间的关系，为探索牙隐裂病因提供依据。方法:采取病例对照研究方法，按照1:1的匹配，选取天津医科大学口腔医院牙体牙髓科就诊的70位牙隐裂患者为病例组，选取同期就诊于本院，并与之相匹配的70位非牙隐裂患者作为对照组。由专业人员填写牙隐裂相关的口腔不良习惯问卷调查表。对牙隐裂的可能影响因素先行?字2检验或 Fisher 确切概率法检验进行单因素分析，检验水准为双侧α=0.05，然后对有统计学意义的所有影响因素行条件Logistic 回归分析。结果:单因素分析显示夜磨牙、骤冷骤热进食习惯、偏侧咀嚼习惯、喜食粗糙坚韧食物、咬硬物习惯有统计学意义（P < 0.05）。条件Logistic 回归分析显示骤冷骤热进食习惯:OR=1.953，95% CI，1.216-3.137；喜食粗糙坚韧食物:OR=1.843，95% CI，1.145-2.937。骤冷骤热进食习惯、喜食粗糙坚韧食物是牙隐裂发生的危险因素。结论:口腔医生诊治牙隐裂时，应告知患者纠正不良生活习惯，以防止裂纹的进一步发展和其它牙齿牙隐裂的发生。

A matched case-control study on correlation between cracked teeth and poor oral masticatory habits

Objective: To explore the causes of cracked teeth by quantitatively assessing risk factors for cracked teeth among poor oral masticatory habits. Methods: In a 1:1 matched case-control study, we enrolled 70 patients with cracked teeth and 70 controls without cracked teeth from the Stomatology Hospital of Tianjin Medical University. A standardized questionnaire,the Tianjin Masticatory Habit Questionnaire, for cracked teeth was adopted.The univariate analysis was carried out using Pearson chi-square test. Then the conditional logistic regression analysis was used to estimate ORs and 95%confidence intervals (CIs). Results: Five of the seven poor oral masticatory habits were found to be related with tooth cracks (P<0.05) in the univariate analysis. In the conditional logistic regression analysis,thermal cycling eating habits [OR=1.953; 95% CI, 1.216-3.137] and eating coarse foods [OR=1.843, 95%CI, 1.145-2.937] were found to be related with tooth cracks. Conclusion: Thermal cycling eating habits and eating coarse foods might be related to cracked teeth. These findings yield insights into ways to promote the prevention of risky behaviors for cracked teeth.