Wilson R F, Ashley F P
Guy's Hospital Dental School, London, England, U.K.
Arch Oral Biol. 1988;33(7):473-8. doi: 10.1016/0003-9969(88)90027-1.
The composition of approximal plaque was compared with that normally collected from the free smooth surfaces in investigation of 45 males aged 11-14 years and 75 females aged 13 years. Statistically significant differences in calcium, inorganic and organic phosphorus, magnesium, fluoride and carbohydrate were observed between free smooth-surface and approximal plaque. The concentrations were always lower in the approximal sample, ranging from 55 to 70 per cent of those in free smooth-surface plaque. A subsequent comparison in 12 students indicated that the concentration of total lipids in approximal plaque was about twice that of free smooth-surface plaque, a difference which could explain the quantitative disparity in total composition between the two types of plaque in the studies with children. The differences are consistent with approximal plaque having reduced access to a range of environmental factors due to diffusion limitation in its deeper layers.
在对45名11至14岁男性和75名13岁女性的研究中，对邻面菌斑的成分与通常从游离光滑表面收集的菌斑成分进行了比较。在游离光滑表面菌斑和邻面菌斑之间，观察到钙、无机磷和有机磷、镁、氟化物和碳水化合物存在统计学上的显著差异。邻面样本中的浓度总是较低，为游离光滑表面菌斑浓度的55%至70%。随后对12名学生的比较表明，邻面菌斑中总脂质的浓度约为游离光滑表面菌斑的两倍，这一差异可以解释儿童研究中两种菌斑总成分的数量差异。这些差异与邻面菌斑由于其较深层的扩散限制而减少了对一系列环境因素的接触是一致的。
