1. Division of Restorative Dentistry and Periodontology; Dublin Dental University Hospital, Trinity College Dublin; Lincoln Place, Dublin 2 Ireland
2. Oral Biology; School of Dentistry; University of Birmingham; Birmingham UK
3. Material Science Unit; Dublin Dental University Hospital, Trinity College Dublin; Ireland
4. Department of Basic Science and Craniofacial Biology; New York University College of Dentistry; New York
5. Division of Oral Biosciences; Dublin Dental University Hospital, Trinity College Dublin; Ireland