“Salivary Alpha-Amylase and Calcium Levels Evaluation As a Biomarker in Stress Patients Undergoing Surgical Wisdom Tooth Extraction”. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), vol. 31, no. 1, Oct. 2021, pp. 137-51, https://doi.org/10.55562/jrucs.v31i1.359.