Influence of Apical Diameter on the Outcome of Regenerative Endodontic Treatment in Teeth with Pulp Necrosis: A Review

Within the limitations, the teeth with apical diameters <1.0 mm achieved clinical success after regenerative endodontic treatment. Meanwhile, the teeth with apical diameters of 0.5-1.0 mm attained the highest clinical success rate, which may be related to other potential factors, including patient age, pulp necrosis etiology, preoperative apical radiolucency, procedure details, follow-up period, and sample size.