Conclusion
periodontitis
PERIODONTITIS
In summary, vitamin D plays a positive role in the adjuvant treatment of individuals with periodontitis. Therefore, vitamin D in combination with nonsurgical periodontal therapy such as SRP has a practical application of value on the prevention and treatment of periodontitis in clinical practice. However, Due to the small number of included studies, high heterogeneity, and lack of clear explanation of the source of heterogeneity, the actual effect of vitamin D combined with SRP in periodontitis in this study needs to be carefully interpreted, and a larger sample size and high- quality studies are still required to confirm it in the future.