Depth of cure of bulk-fill and flowable resin in contact with mineral trioxide aggregate plugs in ex vivo immature teeth

Introducción: Tooth development may be interrupted when the pulp becomes necrotic because of caries, trauma, or anatomical alterations such as dens evaginatus.Objective: To determine depth cure and hardness an injected bulk-fill resin (Sonic Fill™) compared with a flowable (Revolution™) in teeth incomplete apex formation.Material Methods: Forty recently extracted uniradicular were assigned for study; 3 mm was cut to standardize all 13 mm, then root canals instrumented size 1.10 by using Peeso drills. A 3-mm mineral trioxide aggregate (MTA) plug placed apical third. After etching canal walls, intracanal adhesive system cured. Then, Sonic Fill™ into remainder 20 specimens randomly selected composite others. All rectangular, acrylic base sectioned along long axis tooth. The evaluated Vickers micro-hardness test Student T independent groups.Result: Specimens SF group showed significantly (p = 1.6 × 10−6) higher (24.03±4.09 Kp) I.C.95% [20.88- 27.19] than those Revolution™ (11.28±3.19 [8.82- 13.72].Conclusions: SonicFill™ microhardness flow able group, making former more suitable strengthening immature apexes.