蔗糖激发试验后咀嚼无糖口香糖对原位牙菌斑pH值的影响
[Effect of chewing sugar-free gum after sucrose challenge on dental plaque pH in situ].
作者信息
Dong Yan-mei, Pan Yi-chun, Wang Dong-mei, Cao Cai-fang
机构信息
Department of Operative Dentistry and Endodontics, Peking University School of Stomatology, Beijing 100081, China.
出版信息
Zhonghua Kou Qiang Yi Xue Za Zhi. 2003 Nov;38(6):423-5.
OBJECTIVE
To evaluate the effect of chewing sugar-free gum after sucrose challenge on dental plaque pH in situ.
METHODS
16 healthy volunteers aged 23 - 32 years were screened as subjects. The pH of 48-hour dental plaque was measured using a Beetrode pH microelectrode when subjects chewed Extra sugar-free gum after sucrose challenge.
RESULTS
Dental plaque pH maintained at resting plaque pH when immediately chewed sugar-free gum after sucrose challenge. Chewing sugar-free gum at 5 min after sucrose challenge, dental plaque pH was raised from 5.59 (measured at 5 min after sucrose challenge) to 6.98 (measured at 10 min after sucrose challenge).
CONCLUSIONS
Chewing sugar-free gum after sucrose challenge can neutralize organic acid produced by bacteria in dental plaque and rapidly rise plaque pH.
目的
评估蔗糖刺激后咀嚼无糖口香糖对原位牙菌斑pH值的影响。
方法
筛选16名年龄在23 - 32岁的健康志愿者作为受试者。当受试者在蔗糖刺激后咀嚼益达无糖口香糖时，使用Beetrode pH微电极测量48小时牙菌斑的pH值。
结果
蔗糖刺激后立即咀嚼无糖口香糖时，牙菌斑pH值维持在静息菌斑pH值水平。在蔗糖刺激后5分钟咀嚼无糖口香糖，牙菌斑pH值从5.59（蔗糖刺激后5分钟测量）升至6.98（蔗糖刺激后10分钟测量）。
结论
蔗糖刺激后咀嚼无糖口香糖可中和牙菌斑中细菌产生的有机酸，并迅速提高菌斑pH值。
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