This study assessed the effect of qat chewing on periodontal health, independent of other risk factors. Four hundred qat chewers and 100 nonchewers (20–50 years) were included. Demographic data and detailed information about chewing and smoking were obtained. Periodontal status was assessed using Community Periodontal Index (CPI) and clinical attachment loss (CAL). The qat chewers were older, included more males and smokers, and had worse oral hygiene but higher education levels; the majority were heavy chewers (mean duration of 14.45 years and frequency of 6.10 days/week). Regression analysis identified age, oral hygiene, education level, and cigarette smoking as independent predictors of periodontal destruction. Adjusted for these, qat chewing showed marginally significant association only with CAL (OR = 4.7;P=0.049). The chewing sides showed significantly higher scores than the nonchewing sides; however, equal scores on both sides or lower scores on the chewing sides (possibly no or beneficial effect) were still observed in 50% of the chewers. Heavy qat chewing is shown here as an independent risk factor for attachment loss. However, the possibility that the habit may have beneficial effects in a subset of the chewers cannot be excluded. A holistic model that resolves the existing contradiction is presented.
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机译：这项研究评估了咀嚼qat对牙周健康的影响，而与其他风险因素无关。其中包括四百个qat咀嚼物和100个非咀嚼物（20-50年）。获得了有关咀嚼和吸烟的人口统计数据和详细信息。使用社区牙周指数（CPI）和临床依恋丧失（CAL）评估牙周状态。 qat咀嚼物年龄较大，男性和吸烟者较多，口腔卫生较差，但受教育程度较高;大部分为重度咀嚼物（平均持续时间为14.45年，频率为6.10天/周）。回归分析确定了年龄，口腔卫生，教育程度和吸烟是牙周破坏的独立预测因素。对此进行调整后，qat咀嚼仅显示与CAL的相关性显着（OR = 4.7; P = 0.049）。咀嚼面的得分明显高于非咀嚼面。但是，在50％的咀嚼物中，双方得分均相等或咀嚼侧得分较低（可能没有效果或有益效果）。这里显示的大量qat咀嚼是附着力丧失的独立风险因素。但是，不能排除这种习惯可能对咀嚼子集产生有益影响的可能性。提出了一种解决现有矛盾的整体模型。
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