Different endodontic treatments induced root development of two nonvital immature teeth in the same patient: A case report

Table 1 Timeline of the treatment of the right maxillary second premolar

Timeline	Events
March 11, 2021	First treatment visit	Root canal irrigation and intracranial medication with calcium hydroxide paste
March 26, 2021	Second treatment visit	Penetration of the periapical tissue to induce bleeding, sealing of the coronal third of the root canal with iRoot BP plus
June 29, 2021	3-mo follow-up	Significant reduction of the periapical hypodense area and obvious closure of the apex
September 28, 2021	6-mo follow-up	Complete healing of the periapical lesion and slight increase in dentinal wall thickness
April 1, 2022	12-mo follow-up	Significant thickening of the dentinal wall and obvious narrowing of the root canal