1. Centers for Disease Control and Prevention. Health-Related Quality of Lige (HRQOL). (2021). Retrieved 29 June 2022, from https://www.cdc.gov/hrqol/index.htm#:~:text=Health%2Drelated%20quality%20of%20life%20(HRQOL)%20is%20an%20individual's,role%20in%20public%20health%20practice
2. Buset, S. L., Walter, C., Friedmann, A., Weiger, R., Borgnakke, W. S., & Zitzmann, N. U. (2016). Are periodontal diseases really silent? A systematic review of their effect on quality of life. Journal of Clinical Periodontology, 43(4), 333–344.
3. Graziani, F., Minenna, L., Karapets, D., Herrera, D., Nisi, M., Gennai, S., Gabriele, M., Discepoli, N., Petrini, M., Marhl, U., Perić, M., Adriaen, L., Alonso, B., Bouchard, P., Cardaropoli, D., Cavalcanti, R., Chackartchi, T., Franch-Chillida, F., Gianserra, R., … Tomasi, C. (2020). Oral care and quality evaluation: A multicentric study on periodontal treatment. Oral Health & Preventive Dentistry, 18(1), 363–371.
4. Ferreira, M. C., Dias-Pereira, A. C., Branco-de-Almeida, L. S., Martins, C. C., & Paiva, S. M. (2017). Impact of periodontal disease on quality of life: A systematic review. Journal of Periodontal Research, 52(4), 651–665.
5. Needleman, I., McGrath, C., Floyd, P., & Biddle, A. (2004). Impact of oral health on the life quality of periodontal patients. Journal of Clinical Periodontology, 31(6), 454–457.