Over-whitening can also cause teeth to become thin and brittle and can lead to high sensitivity and discoloration as tooth enamel becomes translucent.
美白牙齿过度，会使牙齿变得薄弱。同时，由于牙釉质变为半透明状，会导致牙齿高度敏感、变色。
Objective To improve the oral health level and life quality in old age, we analyzed non-caries tooth sensitivity to find proper treatment in this study.
目的通过对牙体敏感症状非龋性疾病的分析，寻找适当的治疗方法，以提高老年人的口腔健康水平和生活质量。
Conclusion By correct diagnosis and proper treatment, tooth sensitivity in aged can get satisfactory effect, and those teeth can be maintained much longer.
结论对老年人牙体敏感症只要诊断正确，治疗方法得当，均能收到理想效果，能显著延长牙齿寿命，以维护老年人口腔的身心健康。
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