Thesis

The relationship of calcium : phosphorus ratio to periodontal disease

A study of 50 dental patients was made to determine if a correlation could be demonstrated between a high ratio phosphorus to calcium intake and the presence of periodontal disease. The study was based data from many researchers suggesting that bone demineralization is the result of chronic dietary deficiency of calcium and chronic dietary excess of phosphorus. A Periodontal Index (PI), based on visual data, was used to evaluate the severity of periodontal disease. The mean score was 1.97+, 88 SD. (0-no detectable lesion: 8-most severe). The CA:P was calculated from a 24-hour dietary recall. The ratios ranged from 1:1 to 1:6.4, with a mean of 1:2.5, +1.16 SD. Protein intake was also studied because of its implication to bone loss in the body when consumed in large quantity. The mean intake was 76 g, +35 SD. The diets were shown to be low in calcium, with the mean intake of 536 mg compared to the RDA of 800 mg RDA recommendation. The data obtained in this study collectively provided little evidence for a possible link of dietary calcium to phosphorus ratio or protein intake as prime etiologic factors in periodontal disease as no significant correlation could be demonstrated between the PI and the Ca:P ratios r=.15113, or the PI and the protein scores r=.09098.

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