**6. Patents**

A patent of the Russian Federation "Method of treating a wedge-shaped tooth lesion and a device for its implementation" No. 2 719 898, registration date 23 April 2020. The authors of the patent are Astashina Natalia, Petrachev Artem, Kazakov Sergei, Rogozhnikova Evgenia. The patent holder is Perm State Medical University named after E.A. Wagner.

**Author Contributions:** Conceptualization, A.A.K. and N.A.; methodology, A.A.K. and N.A.; software, A.A.K., L.S. and Y.N.; validation, A.A.K. and N.A.; writing—original draft preparation, A.A.K., L.S. and A.P.; writing—review and editing, A.A.K., N.A., L.S. and A.P.; visualization, A.A.K., L.S. and Y.N.; funding acquisition, A.A.K. All authors have read and agreed to the published version of the manuscript.

**Funding:** The study was funded by Perm National Research Polytechnic University in the framework of the Federal Academic Leadership Program "Priority-2030".

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Conflicts of Interest:** The authors declare no conflict of interest.
