非刺激性混合唾液对全口义齿着色影响的实验研究

The effects of the unstimulated whole salivary on staining of complete dentures

目的:本研究通过检测牙列缺失的患者全口义齿配戴前后非刺激性混合唾液的流率、pH值以及Ca2+、Na+、K+离子的浓度,探讨非刺激性混合唾液对全口义齿着色的影响。方法:按全口义齿着色程度的不同,将90例全口义齿配戴者分成轻、中、重度3组。对各组患者全口义齿配戴前和配戴3个月后非刺激性混合唾液的流率、pH值以及Ca2+、Na+、K+离子浓度进行检测。采用单因素方差分析和配对样本资料的t检验进行统计学分析。结果:(1)全口义齿配戴前与配戴后,轻度组的唾液流率以及pH值高于中度组和重度组,Ca2+、Na+、K+离子浓度则低于中度组和重度组,差别有统计学意义(P<0.01)。(2)全口义齿配戴后唾液流率0.66±0.17mL/min高于配戴前0.50±0.20mL/min,配戴后pH值6.48±0.22低于配戴前6.71±0.18,Ca2+、Na+、K+离子浓度升高,差别均有统计学意义(P<0.01)。结论:非刺激性混合唾液的流率、pH值以及Ca2+、Na+、K+离子浓度的变化影响全口义齿着色的严重程度;全口义齿修复前后唾液的分泌也有所改变。

Objective： To study the effects of the flow rate,pH value and the concentration of calcium,sodium,potassium in unstimulated whole salivary on staining of complete dentures.Methods： According to the extent of staining,the samples were divided into mild,moderate and severe groups.The flow rate,pH value and the concentration of calcium,sodium,potassium in salivary were measured before denture insertion and after 3 months.One-Way ANOVA and paired-samples T text were used for statistical analysis.Results：（1） The flow rate and pH value of mild group were higher than moderate and severe groups,the concentration of calcium,sodium,potassium were lower（P 0.01）.（2） The flow rate after denture insertion（0.66±0.17ml/min） was significantly higher than that before（0.50±0.20ml/min）,pH value（6.48±0.22） was lower than that before（6.71±0.18）.There was an increase in the concentration of calcium,sodium,potassium（P 0.01）.Conclusions： The flow rate,pH value and the concentration of calcium,sodium,potassium in unstimulated salivary have an influence on staining of complete dentures,while the salivary also change after denture insertion.