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Original Research

Open Access

Comparative evaluation of a bioactive restorative material with resin modified glass ionomer for calcium-ion release and shear bond strength to dentin of primary teeth—an in vitro study

  • Kunal Bhatia1,2
  • Rashmi Nayak1,2,*,
  • Kishore Ginjupalli2,3

1Department of Paediatric and Preventive Dentistry, Manipal College of Dental Sciences, Manipal, India

2Manipal Academy of Higher Education, Karnataka, India

3Department of Dental Materials, Manipal College of Dental Sciences, Manipal, India

DOI: 10.22514/jocpd.2022.022 Vol.46,Issue 6,November 2022 pp.25-32

Published: 01 November 2022

*Corresponding Author(s): Rashmi Nayak E-mail:


Objectives: This study aimed to evaluate the release of calcium ions from a bioactive restorative material and its shear bond strength (SBS) to primary dentin. Study design: Occlusal surface of extracted non-carious primary molars were flattened, onto which 2 × 2 mm cylinders of ACTIVA™ BioActive Restorative (PULPDENT® Corporation, Watertown MA) or Fuji II LC (GC Corporation, Tokyo, Japan) were prepared using a polypropylene straw mould. SBS of the materials to primary dentin was tested using a universal testing machine. The mode of bond failure was assessed using stereomicroscopy. 10 mm × 2 mm disks of each material were prepared and immersed in Milli-Q water for 1, 7, 14 and 21 days. The released calcium ions in the immersion media were quantified using Atomic Absorption Spectroscopy. Results: ACTIVA™ BioActive Restorative showed a mean SBS of 4.29 ± 0.65 MPa to primary dentin and calcium ion release of 0.76 ± 0.12 ppm over 21 days. Conclusion: ACTIVA™ BioActive Restorative showed a significantly higher mean SBS to primary dentin, and significantly higher calcium ion release compared to Fuji II LC.


BioActive; Calcium ion release; Primary teeth; Shear bond strength

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Kunal Bhatia,Rashmi Nayak,Kishore Ginjupalli. Comparative evaluation of a bioactive restorative material with resin modified glass ionomer for calcium-ion release and shear bond strength to dentin of primary teeth—an in vitro study. Journal of Clinical Pediatric Dentistry. 2022. 46(6);25-32.


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