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  • Title: A study to assess the plaque inhibitory action of a new zinc citrate toothpaste formulation.
    Author: Moran J, Addy M, Corry D, Newcombe RG, Haywood J.
    Journal: J Clin Periodontol; 2001 Feb; 28(2):157-61. PubMed ID: 11168740.
    Abstract:
    BACKGROUND, AIMS: Zinc-citrate-containing toothpastes have previously been suggested to be of value at inhibiting plaque and gingival inflammation. Present formulations have included triclosan which is thought to contribute major antibacterial/antiplaque effects. Alternative antimicrobial agents and other ingredients such as oils could help to produce equally effective formulations. The aim of this study was to determine whether zinc citrate toothpastes containing bromochlorophene and a triglyceride oil (1% and 8%) could inhibit de novo plaque formation. METHODS: Toothpaste slurry rinses were used over a 96-h period by 24 volunteers, whilst omitting all other oral hygiene procedures. For comparative purposes, a conventional commercial fluoride control toothpaste was also used in this triple cross-over double blind study. RESULTS: After 24 and 48 h, there were no statistically significant differences in plaque between the 2 test pastes and the control paste, whether assessed using a plaque index or plaque area. After 96 h, however, a significant reduction in plaque score of 10.6% and 24.2%) in plaque area (both p < 0.001) was found for the zinc citrate/1% oil toothpaste compared to the control paste. In addition, at 96 h, the 8% oil toothpaste significantly reduced plaque score compared to the control paste by 4.3% (p = 0.029). CONCLUSIONS: These findings would appear to warrant further investigation into the potential value of the zinc citrate/bromochlorophene/triglyceride formulation at inhibiting both plaque and gingival inflammation.
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