<qa>  What is the name of the group that the patients receive?Forty five patients will include were allocated by random or by chance to receive several clinical interventions and one of these interventions was control Group A where the patients did not receive any intracanal medication, Group B where the patients receive intracanal medication calcium hydroxide CALCIPAST Paste, Poland and chlorhexidine 2 gel. Gluco-Chex 2, Cerkamed, Poland, Group C calcium hydroxide paste only CALCIPAST Paste Poland. 