干髓术和根管治疗术在老年人磨牙牙髓病变治疗中的应用价值探究
간수술화근관치료술재노년인마아아수병변치료중적응용개치탐구
To Explore the Application Value of Mummification and Root Canal Therapy in the Elderly With Molar Endodontic Lesions