1. Department of Oral Health Sciences, Division of Restorative Dentistry, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC V6T 1Z3, Canada
2. Department of Oral Biological and Medical Sciences, Division of Biomaterials, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC V6T 1Z3, Canada
3. Department of Oral Health Sciences, Division of Endodontics, Faculty of Dentistry, University of British Columbia, 2199 Wesbrook Mall, Vancouver, BC V6T 1Z3, Canada
4. Department of Restorative Dentistry and Endodontology, Graduate School of Dentistry, Osaka Dental University, Osaka 565-0871, Japan
5. Department of Materials Engineering, Faculty of Applied Sciences, University of British Columbia, 309-6350 Stores Road, Vancouver, BC V6T 1Z4, Canada
6. Faculty of Pharmaceutical Sciences, University of British Columbia, 2405 East Mall, Vancouver, BC V6T 1Z3, Canada