L. A. M. Penteado, R. C. M. Pinho, N. B. dos Santos, B. de C. F. Vajgel, and R. Cimões, “The impact of dental anxiety and dental fear on the periodontal status and quality of life among dental patients”, Braz. J. Oral Sci., vol. 17, p. e18220, Oct. 2018.