THE PH OF DENTAL PLAQUES IN THE DIFFERENT AREAS OF THE MOUTH BEFORE AND AFTER MEALS AND THEIR RELATIONSHIP TO THE PH AND RATE OF FLOW OF RESTING SALIVA
THE PH OF DENTAL PLAQUES IN THE DIFFERENT AREAS OF THE MOUTH BEFORE AND AFTER MEALS AND THEIR RELATIONSHIP TO THE PH AND RATE OF FLOW OF RESTING SALIVA
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DOI：
10.1016/0003-9969(64)90015-9
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发表时间：
1964-01-01
影响因子：
3
通讯作者：
JENKINS, GN
中科院分区：
文献类型：
--
作者：
KLEINBERG, I;JENKINS, GN
研究人员对85名受试者在正餐前后均匀分布在18个不同牙齿表面的牙菌斑进行了研究，以确定它们的pH值与以下因素之间的关系：(i)之前吃的饭的时间和类型，（ii）静息唾液的流量和pH值，以及（iii）给定菌斑相对于腮腺和下颌（上颌下加上舌下）唾液分泌物的口腔内位置。在禁食状态下（即早餐前和至少12小时）。在最后一餐之后)，含有极少量或不含碳水化合物的膳食对斑块pH值的影响很小，如果有的话。然而，在研究的所有地区，含碳水化合物的食物都降低了这些水平，即使在3个半小时后也会继续这样做。用餐时间之后。禁食值几乎无一例外地高于沐浴他们的唾液的pH值，上颌前牙的唇表面的pH值最低，而下颌骨的近唇表面的pH值最高。当以白面包为碳水化合物源测定其pH值时，空腹pH值较高的斑块也显示出更高的最小值。斑块水平如此之高的受试者也有更快的静息唾液流速。在影响区域斑块pH值差异方面，下颌分泌物似乎比腮腺分泌更重要。区域菌斑pH值的分布模式与先前报道的龋齿和牙周病口腔内发病率的分布模式非常相似。
Dental plaques located on eighteen different tooth surfaces evenly distributed throughout the mouths of eighty-five subjects were studied before and after ordinary meals to determine the relationship between their pH levels and (i) the time and type of meal previously eaten, (ii) the flow and pH of the resting saliva and (iii) the intra-oral location of a given plaque relative to the parotid and mandibular (submaxillary plus sublingual) salivary secretions. In the fasting state (i.e. pre-breakfast and at least 12 hr. after the last previous meal), meals containing extremely little or no carbohydrate had little effect, it any, on plaque pH levels. Meals with carbohydrate, however, lowered these levels from their fasting values in all areas studied, continuing to do so even at 3 1/2 hr. after meal-time. Fasting values were almost invariably higher than the pH of the saliva bathing them, with the labial surfaces of the maxillary anterior teeth showing the lowest levels while the approximal surfaces of the mandibular teeth showed the highest. When their pH minima were determined with white bread as carbohydrate source, plaques that had higher fasting pH values also showed higher minima. Subjects with plaques that had such higher levels also had faster resting salivary flow rates. The mandibular secretion seemed to be more important than that from the parotids in influencing regional plaque pH differences. Regional plaque pH levels showed a distribution pattern very similar to the patterns previously reported for the intra-oral incidence of caries and periodontal disease.