Exhibition Iranian Dental Association-Isfahan Branch , Sept 2022, Isfahan , Iran 61th International Congress Of Excida, Tehran, Iran 10th Congress Of Parseh Dental, Nov 2019, Shiraz, Iran 2nd Congress Of Swidac, Feb 2020, Ahvaz , Iran 19th International Congress Of Periodontology-Oct 2019,Tehran, Iran 56th International Congress Of Excida, Tehran, Iran 53th International Congress Of Excida, Tehran, Iran