In the past decades, levels of vitamin D start declining as a result of change in dietary intake because of the reduction in exposure to sunlight (3). Deficiency in vitamin D became a public health issue worldwide. In recent years, about 32% of the population in United Stated have deficiency in vitamin D (4).Several studies have proved that vitamin D has a clear positive effect on periodontal disease, gingival inflammation. It can reduce alveolar bone and attachment loss. It is very likely because of the anti-inflammatory effect(5,6). More recent study described that there is an anti-inflammatory rule of vitamin D as it can prevent T cell proliferation which induced by antigen and can inhibit the production of cytokine(6). Other studies proved that individuals with ideal levels of 25-hydroxyvitamin D are less about 20 percent in bleeding on probing in comparison with those individuals having low serum levels, this can give clear evidence on the anti-inflammatory effect of vitamin D(3). To evaluate whether there is a relation between vitamin D and periodontitis, this study has been
In the past decades, levels of vitamin D start declining as a result of change in dietary intake because of the reduction in exposure to sunlight (3). Deficiency in vitamin D became a public health issue worldwide. In recent years, about 32% of the population in United Stated have deficiency in vitamin D (4).Several studies have proved that vitamin D has a clear positive effect on periodontal disease, gingival inflammation. It can reduce alveolar bone and attachment loss. It is very likely because of the anti-inflammatory effect(5,6). More recent study described that there is an anti-inflammatory rule of vitamin D as it can prevent T cell proliferation which induced by antigen and can inhibit the production of cytokine(6). Other studies proved that individuals with ideal levels of 25-hydroxyvitamin D are less about 20 percent in bleeding on probing in comparison with those individuals having low serum levels, this can give clear evidence on the anti-inflammatory effect of vitamin D(3). To evaluate whether there is a relation between vitamin D and periodontitis, this study has been