[1] Univ Seville, Dept Stomatol, Seville 41009, Spain
[2] Sci Comm Antibiot Res Spanish Soc Implants SEI So, Madrid 28020, Spain
[3] Rey Juan Carlos Univ, Dept Basic Hlth Sci, Madrid 28922, Spain
[4] Univ Connecticut Hlth, Sch Dent Med, Oral & Maxillofacial Surg Dept, Farmington, CT 06030 USA
[5] Univ Connecticut Hlth, Sch Dent Med, Prosthodont Dept, Farmington, CT 06030 USA
[6] Rey Juan Carlos Univ, Dept Nursery & Stomatol, Madrid 28922, Spain
[7] Univ Connecticut Hlth, Sch Dent Med, Dept Oral Hlth & Diagnost Sci, Farmington, CT 06030 USA
[8] Univ Complutense Madrid, Fac Dent, Dept Clin Specialties, Madrid 28040, Spain
[9] Semmelweis Univ, Dept Prosthodont, H-1085 Budapest, Hungary
[10] Med Univ Graz, Dept Dent & Oral Hlth, Div Oral Surg & Orthodont, A-8010 Graz, Austria
[11] Univ Complutense Madrid, Fac Dent, Sect Grad Periodontol, Madrid 28040, Spain
[12] Harvard Univ, Harvard Sch Dent Med, Dept Restorat Dent & Biomat Sci, Boston, MA 02115 USA