Testing therapeutic measures for controlling chronic gingivitis in man: The results of two studies

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Abstract
A previous paper described a suggested protocol which could be used for testing therapeutic measures. In this paper the protocol has been used as a basis for testing experimental toothpastes over short and medium periods of time. The effects on plaque and gingivitis of a chlorhexidine paste used for 4 weeks, and of two other experimental products used over 8 weeks, have been investigated. Statistically significant improvements in gingivitis were observed during the use of chlorhexidine and one of the experimental pastes compared with their respective placebo pastes. The benefit observed for the experimental paste became evident when the data were analyzed considering only participants with‘frank' gingivitis. The findings have also been presented in various ways in attempts to express the benefits of the therapeutic measures in clinical terms by using arbitrarily determined success criteria.

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