Micro-CT Assessment of Hydraulic Calcium Silicate Cements for Perforating Internal Resorption in 3D-printed Tooth Replicas at Different Root Thirds: An In Vitro Study

CE Hours: 1.0

Description: Effective repair of perforating internal resorption (PIR) requires adequate defect filling; however, the influence of defect location on the filling ability of hydraulic calcium silicate cements (HCSCs) remains unclear. This micro-computed tomography (micro-CT) study evaluated Bio-C Repair (BCR), Biodentine (BD), and white MTA-Angelus (WMTA) in three dimensional-printed tooth replicas with PIR defects in different root thirds. The null hypothesis was that material performance would not differ according to defect location.

At the conclusion of this article, the reader will be able to: 

1. Compare the filling ability, sealing performance, and extrusion behavior of Bio-C Repair, Biodentine, and white MTA-Angelus in the repair of perforating internal resorption at different root thirds.

2. Describe how defect location influences hydraulic calcium silicate cement performance, including adaptation and filling of the adjacent apical root canal.

3. Evaluate the clinical implications and limitations of using micro-computed tomography and 3D-printed tooth replicas to assess materials for perforating internal resorption repair.