[1] Shahid Beheshti Univ Med Sci, Sch Dent, Dept Dent, Tehran, Iran
[2] Dept Oral & Maxillofacial Surg, Augusta, GA USA
[3] Augusta Univ, Prosthodont Residency Program, Augusta, GA USA
[4] Augusta Univ, Ronald Goldstein Ctr Esthet & Implant Dent, Dent Coll Georgia, Augusta, GA USA
[5] Queen Mary Coll, London, England
[6] King Faisal Univ, Coll Dent, Dept Prosthodont & Dent Implantol, Al Hasa, Saudi Arabia
[7] Chulalongkorn Univ, Fac Dent, Ctr Excellence Regenerat Dent, Dept Anat, Bangkok, Thailand
[8] UCLA, Dept Dent, Clin Dent, Sch Dent, Los Angeles, CA USA
[9] Western Univ Hlth Sci, Coll Dent Med, Dept Dent, Pomona, CA USA
[10] Taibah Univ, Coll Dent, Dept Restorat Dent, Al Madinah, Saudi Arabia
[11] Ajman Univ, Ctr Med & Bioallied Hlth Sci Res, Ajman 346, U Arab Emirates
[12] Univ Jordan, Sch Dent, Amman, Jordan
[13] Riphah Int Univ, Islamic Int Coll, Dept Dent Mat, Islamabad, Pakistan
[14] Univ Tehran Med Sci, Sch Dent, Dept Dent, Tehran, Iran
[15] Shahid Beheshti Univ Med Sci, Dent Sch, Unit 130, Bld Arghavan 6, Tehran, Iran