Abstract
The article deals with a major medical problem, such as complications caused by failures in endodontic treatment of temporary teeth. Specifically, the article describes an interesting clinical case of temporary tooth decay with paste treatment, damage to the soft and superficial soft tissue surrounding the root and lower jaw, including 45 tooth follicles after prolonged use of paste. In turn, chronic inflammatory processes in the jawbone and damage to the tooth follicle of 45 teeth have pushed the latter to stop development and the metaplasia of the membrane into the follicular cyst. This resulted in the destruction of a large bone area, which included a large mass of bone in the lower jaw, which necessitated resection within the abnormal bone tissue area and the loss of 44, 46, and 47 teeth.