«Evaluation of The Effectiveness of Some Tooth Brushing Techniques in Plaque Control Among Preclinical Dental Students in a Nigerian Tertiary Institution». African Journal of Biomedical Research, libk. 22, zenb. 2, 2019(e)ko maiatzaren, or. 121-6, https://www.ojshostng.com/index.php/ajbr/article/view/2251.