Esra Can Say ,Dr. Can Say is an Assistant Professor in the Department of Operative Dentistry of the Faculty of Dentistry at Yeditepe University in Istanbul, Turkey. She graduated from the Istanbul University Faculty of Dentistry in 1994 and earned her PhD in 1999. e-mail: esracan@hotmail.com,

Baybora Kayahan ,Dr. Kayahan is an Assistant Professor in the Department of Endodontics of the Faculty of Dentistry at Yeditepe University in Istanbul, Turkey. He graduated from the Istanbul University Faculty of Dentistry in 1995 and earned his PhD degree in 2000.,

Emre Ozel ,Dr. Ozel is a Research Assistant in the Department of Operative Dentistry of the Faculty of Dentistry at Yeditepe University in Istanbul, Turkey. He graduated from the Istanbul University Faculty of Dentistry in 1999 and earned his MSc degree from the Faculty of Dentistry at Yeditepe University in 2003 where he is currently a doctoral student.,

Kagan Gokce ,Dr. Gokce is an Assistant Professor in the Department of Operative Dentistry of the Faculty of Dentistry at Yeditepe University in Istanbul, Turkey. He graduated from the Istanbul University Faculty of Dentistry in 1989 and earned his PhD in 1996.,

Mubin Soyman ,Dr. Soyman is the Head and a Professor in the Department of Operative Dentistry of the Faculty of Dentistry at Yeditepe University in Instanbul, Turkey. He graduated from the Istanbul University Faculty of Dentistry in 1973 and earned his PhD in 1977.,

Gunduz Bayirli ,Dr. Bayiril is the Head and a Professor in the Department of Endodontics of the Faculty of Dentistry at Yeditepe University in Instanbul, Turkey. He graduated from the Istanbul University Faculty of Dentistry in 1960 and earned his PhD in 1966.,

Abdalla M. Hazza's ,Dr. Hazza's is an Assistant Professor of Oral and Maxillofacial Radiology in the Department of Oral Medicine and Oral Surgery of the Faculty of Dentistry at the Jordan University of Science and Technology in Irbid, Jordan. e-mail: hazza@just.edu.jo,

Zakarreya S.M. Albashaireh ,Dr. Albashaireh is an Associate Professor in the Department of Restorative Dentistry of the Faculty of Dentistry at Jordan University of Science and Technology in Irbid, Jordan.,

Anwar B. Bataineh ,Dr. Bataineh is a Professor of Oral and Maxillofacial Surgery in the Faculty of Dentistry at Jordan University of Science and Technology in Irbid, Jordan. He served as the Deputy Dean of the Faculty of Dentistry at the Jordan University of Science & Technology in Irbid, Jordan from september 2004 through September 2005. He also serves as a consultant in Oral and Maxillofacial Surgery at King Abdullah University Hospital in Jordan.,

Firas A. M. Al Quran ,Dr. Al Quran is an Assistant Professor and Head, Department of Restorative Dentistry of the Faculty of Dentistry at the Jordan University of Science and Technology in Irbin, Jordan. e-mail: vllrasalquran@yahoo.com,

Ziad N. Al-Dwairi ,Dr. Al-Dwairi is an Assistant Professor and Consultant in Prosthodontics at the Jordan University of Science and Technology in Irbid, Jordan where he received his BDS in 1994. He received his doctorate in Prosthodontics at Queens University of Belfast in 2001. Currently, he is the Coordinator and President of the Jordanian section of International Association for Dental Research (IADR-Jor). His many awards include: the Elida Gibbs Travel Award for the best original research from International Association for Dental Research in 2000; the Procter & Gamble research Award from British dental Association in 2000; the first research Prize fro the British Society for the study of Prosthetic Dentistry in 2001; and the Unilever Hatton Award for best original research from IADR in 2001. His research interest is focused on novel methods for the prevention and treatment of oral fungal infections associated with wearing removable prostheses. e-mail: ziadd@just.edu.jo,

Chukwudi Ochi Onyeaso ,Dr. Onyeaso is a Lecturer/Consultant Orthodontist in the Orthodontic Unit in the Department of Child Oral Health of the Faculty of Dentistry at the College of Medicine/University College Hospital, University of Ibadan, in Ibadan, Nigeria. e-mail: coonyeaso@yahoo.com,

Ellen A. BeGole ,Dr. BeGole is an Associate Professor of Biostatistics in the Department of Orthodontics of the School of Dentistry at the University of Illinois-Chicago (UIC) in Chicago, IL.,

Rajeev Kr. Garg ,Dr. Garg is a graduate of the University of Rajasthan in Jaipur, India. He now serves as a Lecturer at the Arya Dental College & Hospital in Jaipur. His research interests include child psychology and fear, forensic odontology, and ergonomics in dentistry. He is a member of the Indian Dental Association, the National Medicos Organization in India, and the Medical Practitioners' Society of Jaipur, India. e-mail: dr_gargrazz@yahoo.co.in,

Yucel Yilmax ,Dr. Yilmaz is an Assistant Professor in the Department of Pediatric Dentistry of the Faculty of Dentistry at the University of Atatürk in Erzurum, Turkey where he received his dental degree and his PhD. he continues to serve as the chair of that department since 2002. e-mail: yyilmaz25@ataunl.edu.tr,

M. Elcin Kocoguliari ,Dr. Kocogullari is a Research Assistant in the Department of Pediatric Dentistry of the Faculty of Dentistry at the Uiversity of Atatürk in Erzurum, Turkey. She is a graduate of the University of Istanbul Faculty of Dentistry.,

Nihal Beiduz ,Dr. Belduz is a Research Assistant in the Department of Pediatric Dentistry of the Faculty of Dentistry at the University of Atatürk in Erzurum, Turkey where she received her dental degree in 2001.,

Ismail Şener ,Dr. Şener is a Research Assistant in the Department of Oral and Maxillofacial Surgery of the Faculty of Dentistry at Ondokuz Mayis University in Samsun, Turkey. He is a member of the Turkish Oral and Maxillofacial Surgery Society. e-mail: isener@omu.edu.tr,

Murat Metin ,Dr. Metin is an Associated Professor in the Department of Oral and Maxillofacial Surgery in the Faculty of Dentistry at Ondoduz Mayis University in Samsun, Turkey. e-mail: mmuratm@yahoo.com,

Mustafa Tek ,Dr. Tek is a Research Assistant in the Department of Oral and Maxillofacial Surgery in the Faculty of Dentistry at Ondokuz Mayis University in Samsun, Turkey. e-mail: mustafa_tek@hotmail.com,

C. Yeşilyurt ,Dr. Yeşilyurt is an Assistant Professor in the Department of Restorative dentistry of the Faculty of Dentistry at Karadeniz Technical University in Trabzon, Turkey. He received his graduate training in Restorative Dentistry at Ondokuz Mayis University. e-mail: dtcemalyesilyurt@hotmail.com,

B. Bulucu ,Dr. Bulucu is an Associate Professor in the Department of Restorative Dentistry of the Faculty of Dentistry at Ondokuz Mayis University in Samsun, Turkey. e-mail: bbulucu@omu.edu.tr,

Maha Abdulla Al-Sarheed ,Dr. Al-Sarheed is an Assistant Professor and Consultant Pedodontist in the Division of Pediatric Dentistry in the Department of Preventive Dental Science of the College of Dentistry at King Saud University in Riyadh, Saudi Arabia. She received her dental degree from the same institution and her graduate degrees from the University College London in London, England.,

Amornpong Vachiramon ,Dr. Vachiramon is a private practitioner in Bangkok, Thailand. e-mail: amornpong@vachiramon.com,

Wendy C. Wang ,Dr. Wang is a Clinical Lecturer in the Department of Adult Oral Health at Queen Mary's School of Medicine and Dentistry in London, United Kingdom.,

Martin Tovee ,Dr. Tovee is the Reader in Visual Cognition in the Psychology Department of Newcastle University in Newcastle Upon tyne, United Kingdom. Dr. Tovee has published numerous papers on the topics of visual neuroscience and beauty perception.,

Manal Ibrahim Al-Malik ,Dr. Al-Malik is a Consultant Pedodontist in the Dental Department of the King Fahd Armed Forces Hospital in Jeddah, Saudi Arabia. She received her dental degree from the College of Dentistry at King Saud University in Riyadh, Saudi Arabia and received her graduate degrees from the University College London in London, England. e-mail: m.almalik@doctor.com,

Yasser Abdulla Rehbini ,Dr. Rehbini is a Consultant Periodontist in the Dental Department of the King Fahd Armed Forces Hospital in Jeddah, Saudi Arabia. He received his dental degree from the college of King Saud University in Riyadh, Saudi Arabia and received his graduate degree from Tuft's University, Boston, USA.,

Wilson Denis Martins ,Dr. Martins is an Oral and Maxilofacial Surgeon and a Professor of Stomatology at the Catholic University of Paraná (PUCPR) in Curitiba, Brazil. e-mail: wilson@rla01.pucpr.br,

Daniela Martins Fávaro ,Dr. Fávaro is an Orthodontist in private practice in Paranavai, PR, Brazil.,

Marina de Oliveira Ribas ,Dr. Ribas is an Oral and Maxillofacial Surgeon and a Professor of Stomatology at the Pontifical University of Paraná (PUCPR) in Curitiba, Brazil.,

Guilherme Martins ,Mr. Martins is a dental student at the Pontifical University of Paraná (PUCPR) in Curitiba, Brazil.,

Farzaneh Agha-Hosseini ,Professor, Farzaneh Agha-Hosseini Professor, Department of Oral Medicine, Dental Research Center Tehran University of Medical Sciences, Tehran, Iran, e-mail: aghahose@sina.tums.ac.ir, aghahose@sina.tums.ac.ir

Iraj Mirzail Dizgah ,Dr. Mirzali Dizgah is a member of the faculty in the Dental Research Center at Tehran University of Medical Sciences in Teheran, Iran. His interests include oral biology and behavioral sciences. Currently, he is involved in a variety of neuroscience research projects including oplate addiction and salivary diagnostic methods. e-mail: emirzali@razi.tums.ac.ir,

Sara Amirkhani ,Dr. Amirkhani is a Research Assistant at the School of Dentistry at Tehran University of Medical Sciences in Teheran, Iran. e-mail: srmirkhani@yahoo.com,

Cynthia T. Hughes ,Ms. Hughes received her dental hygiene degree from the Medical College of Georgia and her Master of Education from Cambridge College. She has over twenty years experience as a clinician, educator, and speaker. A former instructor for the Medical College of Georgia Department of Dental Hygiene, she is currently a corporate dental hygiene administrator for CoastDental in Tampa, FL. e-mail: chughes@coastdental.com,

Ana L. Thompson ,Ms. thompson is an Assistant Professor in the Department of Dental Hygiene at the Medical College of Georgia School of Allied Health Sciences. Her teaching areas include dental anatomy, dental materials laboratory, and clinic courses. She is participating in several research studies and providing spanish courses for dental professionals.,

Marie A. Collins ,Ms. Collins is an Associate Professor and Department Chair, Department of Dental Hygiene at the Medical College of Georgia School of Allied Health Sciences. Her teaching areas include research design and preclinical dental hygiene education. Her scholarly contributions include several journal publications, book chapters, and directorship of continuing education programs.,

Thomas Schiff ,Dr. Schiff is a Professor and the Chairman of the Department of Maxillofacial Radiology. He was born in Budapest, Hungary, and educated at the Semmelweiss Medical School. He immigrated to the United States and received his dental degree from the School of Dentistry at the University of alabama in 1961. He has served on the faculty of Washington University for 20 years and the University of the Pacific School of Dental Medicine since 1993. He received his advanced training in oral and maxillofacial radiology at the University of Texas Health Science Center in San Antonio, Texas. Dr. Schiff is a Fellow of the International Academy of Maxillofacial Radiology and has received an honorary degree at Semmelweiss University Medical School.,

Tao He ,Dr. He is a Senior Clinical Scientist in Oral Care Worldwide Clinical Investigations at the Procter & Gamble company, Cincinnati, OH, USA. She received a DDS degree from the Capital University of Medicine (Beijing) and a PhD degree in Periodontology from the Tokyo Medical & Dental University in Tokyo, Japan. Her current research interests include periodontal therapy, design of clinical trials, dentifrices, and the effectiveness of mouthrinses (gingivitis, hypersensitivity, breath, stain removal, caries, and calculus). Dr. he has published her research extensively in more than 40 peer-reviewed publications. e-mail: he.t@pg.com,

Lisa Sagel ,Ms. Sagel manages oral care scientific communications at Procter & Gamble. Prior to this position, she was a Principal Researcher in Oral care Research & Development. She has an MA in Latin American development from the University of Kentucky, where she worked as a Spanish translator in dental and medical clinics affiliated with the Kentucky Migrant Health Program.,

Robert Baker ,Mr. Baker is a Section Head in Biometrics at the Procter & Gamble Health care Research Center in Cincinnati, OH, USA. Following receipt of a BS in Mathematics from the Rochester Institute of Technology and an MS in Statistics from Purdue University, he has spent his career supporting oral care clinical trials and health care consumer research. He has authored numerous clinical study reports as well as peer-reviewed publications.,

Geza T. Terezhalmy ,Dr. Terezhalmy is a Professor and Head of the Division of Oral Medicine in the Department of Dental Diagnostic Science at the University of Texas Health Science Center in San Antonio, TX. e-mail: Terezhalmy@uthscsa.edu,

Michaell A. Huber ,Dr. Huber is an Assistant Professor in the Division of Oral Medicine of the Department of Dental Diagnostic Science at the University of Texas Health Science Center at San Antonio Dental School, San Antonio, TX. e-mail: Huberm@uthscsa.edu,

Ronald H. Holton ,Dr. Holton is an Assistant Professor in the Department of Clinical Laboratory Science of the School of Dentistry at the University of Texas Health Science Center at San Antonio in San Antonio, TX. e-mail: holton@uthscsa.edu,

Hayder A. Hashim ,Dr. Hashim is an Associate Professor, Division of Orthodontics, in the Department of Preventive Dental Sciences of the College of Dentistry at King Saud University in Riyadh, Saudi Arabia. e-mail: haider@ksu.edu.sa,

Salman AL-Suliaman ,Mr. AL-Sullaman is a dental laboratory technician in the Laboratory Division of the Department of Dentistry at the AL-Nakhell Medical Center in Riyadh, Saudi Arabia.,

Jelly L. Cordovez ,Mr. Cordovez is a dental laboratory technician in the College of Dentistry at King Saud University in Riyadh, Saudi Arabia.,

R.A. Machado ,Dr. Machado is a PhD student in the Oral and Maxillofacial surgery post graduation program of the School of Dentistry at Pontificia Universidade Católica do Rio Grande do Sul in Porto Alegre, RS, Brazil.,

R. Lanes Silveira ,Dr. Silveira is a PhD student in the Oral and Maxillofacial surgery post graduation program of the School of Dentistry at the Pontificia Universidade Católica do Rio Grande do Sul in Porto Alegre, RS, Brazil.,

H.O.I Borges ,Dr. Borges is a PhD student in the Oral and Maxillofacial surgery post graduation program of the School of Dentistry at the Pontificia Universidade Católica do Rio Grande do Sul in Porto Alegre, RS, Brazil. He is also a Oral Surgery Professor in the graduation program of School of Dentistry at Uningá, in Maringá, state of Paraná, Brazil.,

A.M. Bourguignon Filho ,Dr. Bourguignon Filho is a Master in Oral and Maxillofacial Surgery graduated at Pontificia Universidade Católica do Rio Grande do Sul in Porto Alegre, RS, Brazil,

M. Gerhardt de Oliveira ,Dr. de Oliveira is a Head Professor of graduation and post graduation programs of School of Dentistry at Pontificia Universidade Católica do Rio Grande do Sul in Porto Alegre, RS, Brazil. e-mail: mogerhardt@pucrs.br,

M.E. Rahmani ,Dr. Rahmani is an Associate Professor of Periodontics and the Director of the Graduate Programs in the School of Dentistry and Dental Research Center at Mashhad University of Medical Sciences in Mashhad, Iran. e-mail: merahmani47@yahoo.com,

Mohammad A. Rigi Lades ,Dr. Rigi Lades is an Assistant Professor of Periodontics and the Director of the Department of Periodontics in the School of Dentistry at Zahedan University of Medical Sciences in Zahedan, Iran.,