Hoerman K C, Gasior E J, Zibell S E, Record D, Flowerdew G
Loyola University School of Dentistry, Maywood, Illinois 60153.
J Clin Dent. 1990;2(1):17-21.
The purpose of this investigation was to test the effect of chewing gum sweetened with either sorbitol (LG) or sucrose (SG) on the growth of plaque on tooth enamel surfaces. Nineteen dental students, in a balanced crossover design, chewed the two gums for 5 days without normal oral hygiene practices. The control treatment was a 5-day non-chewing (NG) phase. A period of 9 days was allowed for normal hygiene between test phases. The chewing regimen required 20 minutes of use of one stick of chewing gum immediately after meals or snacks. The average number of sticks chewed was 3.8/day. Pre- and post-treatment plaque scores were recorded by two examiners using a Modified Navy Plaque Index (PLI) from 0 to 9 along each of four surfaces to assess six Ramfjord teeth. Pre-treatment mean PLI scores for the 3 test treatments were, NG = 2.0, LG = 1.9 and SG = 1.9. Post-treatment mean PLI scores were, NG = 3.6, LG = 3.3 and SG = 3.3. ANOVA of pre- and post-treatment scores revealed no significant differences between treatments. Post-treatment scores of the 2 chewing gums were then pooled, independent of sweetener. ANOVA of these data revealed chewing gum (LG + SG = 3.3) to cause significantly less plaque accumulation than no gum (NG = 3.6). In a no oral hygiene environment, plaque accumulation during use of sorbitol chewing gum or sucrose chewing gum was statistically the same. However, chewing gum, irrespective of sweetener, caused significantly less plaque accumulation than no chewing.
本研究的目的是测试用山梨醇（LG）或蔗糖（SG）增甜的口香糖对牙釉质表面菌斑生长的影响。19名牙科学生采用平衡交叉设计，在不进行正常口腔卫生护理的情况下咀嚼这两种口香糖5天。对照处理为5天不咀嚼（NG）阶段。在各测试阶段之间留出9天进行正常口腔卫生护理。咀嚼方案要求在饭后或吃零食后立即使用一根口香糖20分钟。平均每天咀嚼的口香糖根数为3.8根。两名检查人员使用改良海军菌斑指数（PLI），从0到9，沿着四个表面中的每一个表面记录治疗前后的菌斑评分，以评估六颗Ramfjord牙。3种测试处理的治疗前平均PLI评分为：NG = 2.0，LG = 1.9，SG = 1.9。治疗后平均PLI评分为：NG = 3.6，LG = 3.3，SG = 3.3。对治疗前后评分进行方差分析，结果显示各处理之间无显著差异。然后将两种口香糖的治疗后评分合并，不考虑甜味剂。对这些数据进行方差分析，结果显示咀嚼口香糖（LG + SG = 3.3）导致的菌斑堆积明显少于不咀嚼口香糖（NG = 3.6）。在无口腔卫生护理的环境中，使用山梨醇口香糖或蔗糖口香糖期间的菌斑堆积在统计学上是相同的。然而，无论使用何种甜味剂，咀嚼口香糖导致的菌斑堆积都明显少于不咀嚼。
