Modern endodontic approach improve the ability to treat and retain teeth, resulting in a predictably favorable long-term outcome and allowing retention of the natural dentition. 

The goal of endodontic treatment is to eliminate bacteria, to disinfect and fill three dimentionally the root canal system. In his daily practice the endodontist faces several clinical situations; treatment, retreatment, surgical intervention, or extraction? 

The aim of decision-making in endondontics is to analyse each case and balance the risks to determine wether or not a tooth is worthiest to be kept or extracted. 

Endodontic decision making depends on three factors related to diagnosis, treatment planning and the clinician himself. Other parameters such as clinical, radiological, restorative and periodontal status could influence the endodontic outcome. 

The aim of this presentation is to guide the clinician through a series of clinical cases to the best endodontic decision making, for a succesfull and long lasting treatment.