. 2020 Sep 22;14(4):558–565. doi: 10.1055/s-0040-1714194
This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.
Fig. 1.
Periodontal chart used in the study.