Aim: to evaluate effect of Biodentine and MTA on the root length, root dentin
thickness and apical diameter after revascularization in necrotic immature permanent
teeth. Subjects and methods: 20 upper anterior teeth showed immature roots with an
open apex, ranging in age from 9 to 12 years. Revascularization treatment was done,
which was started with disinfection of the canals (sodium hypochlorite irrigation,
followed by triple antibiotic paste for 2- 3 weeks). Next, the triple antibiotic paste was
removed by irrigation with saline, The teeth were divided into two groups 10 each
Group A: revitalization using blood clot scaffold only, and Group B: revitalization
using blood clot and platelet rich fibrin (PRF). Each group was subdivided into two
subgroups according to the material placed over the root canal orifice and a coronal
seal of glass ionomer. Follow-up was done for 6 months. Standardized radiographs
were analyzed for the peri-radicular healing and apical closure.. Results: There was
significant decrease in the mean apical diameter along the follow up periods. No
significant differences were shown between all groups. Conclusion: Clinical and
radiographic evidence showed, revascularization procedure could be an alternative
treatment in immature nonvital teeth. In addition, placing Biodentine and MTA cement
provided a good seal and favorable outcomes.