Eur Endod J. Ahead of Print: EEJ-04796 | DOI: 10.14744/eej.2024.04796

Micro-CT Analysis of Apical Plug Using Various Premixed Bio-ceramic Putties: An In Vitro Study

Alaa M. Eldehna¹, Heba Abdelkafy², Nada Salem³, Sherief Elzahar⁴, Dina M. Abdel-ghany⁴, Nouralhouda F. Abd-Allah¹, Dina Yousry El Kharadly⁴, Mohamed Mohamed Elashiry^5
1Department of Pedodontics and Public Health, Al-Azhar University, Faculty of Dental Medicine for Girls, Cairo, Egypt
²Department of Endodontics, Al-Azhar University, Faculty of Dental Medicine for Girls, Cairo, Egypt
³Department of Pediatric Dentistry and Dental Public Health, October 6 University, Faculty of Dentistry, Cairo, Egypt
⁴Department of Endodontics, Ain Shams University, Faculty of Dentistry, Cairo, Egypt; Private Practice, Istanbul, Türkiye
⁵Department of Endodontics, Ain Shams University, Faculty of Dentistry, Cairo, Egypt

Background: Root growth and apical closure continue after tooth eruption. Root growth may cease if pulp viability is lost due to caries or trauma during this period. Successful endodontic treatment is challenging in these cases due to wide root canals and lack of apical stops. New premixed bioceramic root repair putties offer superior handling and healing properties.
Purpose: To evaluate the filling ability and volumetric changes of three bioceramic putties (BIO-C Repair, NeoMTA Putty, and EndoSequence BC RRM Fast Set Putty) using micro-CT analysis.
Materials and Methods: Thirty-six freshly extracted single-rooted teeth with straight root canals were used, divided into three groups based on the materials. Immature teeth were simulated. Pre- and post-obturated images were taken for each root. Voids were calculated as the percentage difference between canal space volume and repair material volume.
Results: All groups showed marginal gaps and/or internal voids after root-end filling. No significant difference between groups in canal and material volumes was detected at 3 mm (P > 0.05). However, void percentage differences were significant (P = 0.003); Bio-C Repair (9.28 ± 3.27%) and EndoSequence BC RRM (6.7 ± 2.72%) were significantly higher with no difference between them, while NeoMTA Putty (3.73 ± 1.69%) was significantly lower.
Conclusion: NeoMTA Putty exhibited the least volumetric alterations after setting, compared to EndoSequence BC RRM and BIO-C Repair.
Clinical Relevance: Although NeoMTA Putty showed the best results, EndoSequence BC RRM had the best clinical handling, followed by NeoMTA Putty. BIO-C Repair was least preferred due to its creamy consistency. (EEJ-2024-07-114)

Keywords: Apexification, micro-computed tomography, MTA putty, premixed bio-ceramic, simulated immature teeth, young permeant teeth

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