摘要
目的通过对牙面菌斑原位pH值的动态检测,观察咀嚼木糖醇口香糖对牙菌斑pH值的影响。方法采用受试者自身对照的试验方法,选择9名健康成人志愿者为受试对象,用pH微电极在口内测定菌斑的原位pH值。在测定受试者牙面48小时成熟菌斑的基线pH值之后用10%的蔗糖溶液漱口,测定漱口后即刻、3、8、13、20、30、40分钟后菌斑的pH值,然后分别咀嚼蔗糖口香糖和木糖醇口香糖,测量相同时间点、相同位点牙菌斑的pH值。结果用10%的蔗糖溶液漱口后牙菌斑pH值迅速下降至5．5以下,咀嚼蔗糖口香糖后牙菌斑pH值也有下降,但下降幅度较小,在即刻、3、8分钟三个时点二者之间有显著性差异(P＜0．05)。咀嚼木糖醇口香糖后牙菌斑的pH值没有下降,在即刻、3、8、13、20分钟五个时点的pH值明显高于咀嚼蔗糖口香糖后的pH值(P＜0．05)。结论咀嚼木糖醇香糖不会导致口腔中牙菌斑pH值的下降,有助于釉质再矿化。
Objective To evaluate the effect of xylitol chewing gum on dental plaque pH in vivo. Methods Nine healthy volunteers were recruited as subjects, All subjects gave up oral hygiene methods 48 hours before being measured. The pH value was measured by Beetrode pH Electrodes in vivo. The pH value was measured according to a series of time （0, 3, 8, 13, 20, 30 and 40rain） after rinsing mouth with 10% sugar solution, chewing sugar containing gum and xylitol chewing gum, Results The dental plaque pH value fell down rapidly after rinsing mouth with 10% sugar solution, The pH value fells in a less extend degree after chewing sugar containing gum than rinsing mouth with 10% sugar solution, and the pH values were lower at 0, 3, 8min （ P 〈 0.05）. The pH value didn＇ t fall after chewing xylitol chewing gum and kept in a high level till to 40 min（pH〉6.40）, The pH values were higher than that after chewing sugar, containing gum at 0, 3,8, 13,20min （ P 〈 0.05 ）. Conclusion Chewing xylitol chewing gum reduces the acidogenic potential of dental plaque and could help to remineralization.
出处
《现代口腔医学杂志》
CAS
CSCD
北大核心
2006年第5期476-478,共3页
Journal of Modern Stomatology
关键词
菌斑pH
木糖醇
口香糖
Dental plaque pH Xylitol Chewing gum
