Ali, Banaz J, Leka’a M Ibrahim, and Ali Y Majid. “Periodontal Health Status of Heavy and Light Smokers and Its Correlation With Salivary Superoxide Dismutase Enzyme (A Comparative Study) ”. Journal of Baghdad College of Dentistry 25, no. 3 (March 15, 2013): 97–102. Accessed May 5, 2024. https://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/265.