Abstract: Due to age-related changes, as well as long-term teeth attrition, wedge-shaped defects, chronic caries, periodontal disease, the root canals of elderly patients' teeth turn to be small, narrow and even calcification. In addition, the special psychological and physiological characteristics of the elderly patients and their complexity of the oral condition make the root canal treatment of blocked root canals is quite difficult for young dentists. Therefore, the purpose of this paper is to preliminarily discuss the following situations: the etiology of root canal obstruction, the diagnosis of root canal obstruction, and the special treatment of root canal obstruction in the elderly.

Key words: Geriatric dentistry, Root canal obstruction, Root canal treatment