Zeeshan H Ahmad ,Assistant Consultant, King Saud University Medical City, Riyadh, Saudi Arabia, Zeeshan H Ahmad, Assistant Consultant, King Saud University Medical City, Post Box: 60169, Riyadh-11545, Saudi Arabia, e-mail:ksucod@gmail.com, ksucod@gmail.com

Renato de Toledo Leonardo ,Professor, Department of Restorative Dentistry, UNESP, Araraquara (FOAr), São Paulo, Brazil,

Milton Carlos Kuga ,Professor,, Department of Restorative Dentistry, Araraquara Dental School, UNESP-Univ Estadual Paulista, Araraquara, São Paulo, Brazil, Professor Milton Carlos Kuga, Faculdade de Odontologia de Araraquara, FOAr: UNESP, Departamento de Odontologia Restauradora - 3° andar. Rua Humaitá 1680 Centro CEP 14801-903, Araraquara, São Paulo, Brazil, e-mail: miltoncarloskuga@hotmail.com, miltoncarloskuga@hotmail.com

Katia Cristina Keine ,Postgraduate Student, Department of Restorative Dentistry, Araraquara Dental School, UNESP-Univ Estadual Paulista, Araraquara, São Paulo, Brazil,

Andrea Abi Rached Dantas ,Assistant Professor, Department of Restorative Dentistry, Araraquara Dental School, UNESP-Univ Estadual Paulista, Araraquara, São Paulo, Brazil,

Gisele Faria ,Professor, Department of Restorative Dentistry, Araraquara Dental School, São Paulo State University (UNESP), Araraquara São Paulo, Brazil,

Jardel Camilo do Carmo Monteiro ,Professor, Department of Endodontics, Dentalis, Redentor School Itaperuna, Rio de Janeiro, Brazil,

Keren Cristina Fagundes Jordão-Basso ,Postgraduate Student, Department of Restorative Dentistry, Araraquara Dental School, UNESP-Univ Estadual Paulista, Araraquara, São Paulo, Brazil,

Prashant Jay Ruchaya ,Postdoctoral Student, Department of Physiology and Pathology, Araraquara Dental School, UNESP-Univ Estadual Paulista, Araraquara, São Paulo, Brazil,

Omer Gunhan ,Professor, Department of Pathology, Gulhane Military Medical Academy, Ankara, Turkey,

Emin Murat Canger ,Assistant Professor, Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Erciyes University, Kayseri, Turkey, Emin Murat Canger, Assistant Professor, Department of Oral and Maxillofacial Radiology Faculty of Dentistry, Erciyes University, Kayseri-38039, Turkey Phone: +90 0352 2076666/29228, e-mail: emcanger@erciyes. edu.tr, emcanger@erciyes.

Peruze Çelenk ,Professor, Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey,

Emel Bulut ,Associate Professor, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey,

Vinod Kumar ,St Stephens Hospital, New Delhi, India, Emeritus Professor, Department of Medicine, Mamata Medical College/Mamata General and Superspecialty Hospitals, Khammam, Andhra Pradesh, India, Associate Professor, Department of Cardiology, Sexual and Reproductive Healthcare, University, Hospitals Birmingham NHS Foundation Trust, Birmingham, England, UK, Senior Registrar, UK, Dr Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India, CCRYN; National Institute of Mental Health and Neuro Sciences (NIMHANS), Bengaluru, Karnataka, India, Research Officer; Department of Integrative Medicine, Dr Rajendra Prasad Center for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India, Associate Professor, Emeritus Professor, Medicine Department, All India Institute of Medical Sciences, New Delhi, India, Dr Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India, Assistant Professor, Department of ,

Prahalad Hunsigi ,Professor and Head, Department of Oral and Maxillofacial Pathology, AME's Dental College and Research Centre, Raichur, Karnataka, India,

Balakasi Reddy Kaipa ,Senior Lecturer, Department of Conservative Dentistry and Endodontics, MNR Dental College and Hospital, Sangareddy, Telangana, India,

Rajini Reddy ,Reader, Department of Conservative Dentistry and Endodontics, MNR Dental College and Hospital, Sangareddy, Telangana, India,

Chakki B Arun Kumar ,Professor and Head, Department of Oral and Maxillofacial Pathology, Guru Govind Singh College of Dental Sciences and Research Centre Burhanpur, Madhya Pradesh, India,

MD Prasanna ,Professor and Head, Department of Oral Pathology and Microbiology, MNR Dental College and Hospital, Sangareddy, Telangana, India,

Manoj Agarwal ,Assistant Professor, Department of Conservative Dentistry and Endodontics Government Dental College, Jaipur, Rajasthan, India, Manoj Agarwal, Assistant Professor Department of Conservative Dentistry and Endodontics Government Dental College, Jaipur, Rajasthan, India, Phone: 919414214658, e-mail: drmanojgdc@gmail.com, drmanojgdc@gmail.com

HP Trivedi ,Professor and Head, Department of Conservative Dentistry and Endodontics Government Dental College, Jaipur, Rajasthan, India,

Ankit Gaur ,Junior Resident, Department of Conservative Dentistry and Endodontics Government Dental College & Hospital, Jaipur, Rajasthan, India, Ankit Gaur, Junior Resident Department of Conservative Dentistry and Endodontics Government Dental College & Hospital, Jaipur, Rajasthan India, Phone: 0969472668, e-mail: dr.ankitgaur@yahoo.com, dr.ankitgaur@yahoo.com

Lalit Likhyani ,Assistant Professor, Department of Conservative Dentistry and Endodontics Government Dental College & Hospital, Jaipur, Rajasthan, India,

Swaminathan Kavitha ,Reader, Department of Pedodontics, Faculty of Dental Sciences, Sri Ramachandra University, Chennai, Tamil Nadu, India,

Rajendran Vijayakumar ,Reader, Department of Pedodontics, SRM Dental College, SRM University, Chennai, Tamil Nadu, India,

Thomas Eapen ,Professor, Department of Pedodontia, Dr Sunny Medical Centre Sharjah United Arab Emirates,

Rajendran Bharathan ,Senior Lecturer, Department of Pedodontics, Sri Ramakrishna Dental College and Hospital, Coimbatore, Tamil Nadu, India,

Mohammad Reza Khami ,Associate Professor, Department of Community Oral Health, Research Center for Caries Prevention, Dental Research Center, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran,

Reza Yazdani ,Associate Professor, Department of Community Oral Health, School of Dentistry Tehran University of Medical Sciences, Tehran, Iran,

Mohammad Afzalimoghaddam ,Assistant Professor, Department of Emergency Medicine, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran,

Samaneh Razeghi ,Assistant Professor, Department of Community Oral Health, School of Dentistry Tehran University of Medical Sciences, Tehran, Iran, Samaneh Razeghi, Assistant Professor, Department of Community Oral Health, School of Dentistry, Tehran University of Medical Sciences, 1439955991 Kargar St., Tehran, Iran, Phone: 0098-21-88015960, Fax: 0098-21-88015961, e-mail: s-razeghi@tums.ac.ir, s-razeghi@tums.ac.ir

Anahita Moscowchi ,Researcher, Department of Community Oral Health, School of Dentistry Tehran University of Medical Sciences, Tehran, Iran,

BS Suprabha ,Additional Professor, Department of Pedodontics and Preventive Dentistry Manipal College of Dental Sciences, Manipal University Mangalore, Karnataka, India, BS Suprabha, Additional Professor Department of Pedodontics and Preventive Dentistry, ‘Shreyas’ 15/17/940-13, 5th Cross Road, Shivabagh, Kadri, Mangalore 575002, Karnataka, India, Phone: 091-0824-2428716, Fax: 091-0824-2422653, e-mail:suprabha.bhat@manipal.edu, suprabha.bhat@manipal.edu

Adilson Luiz Ramos ,Associate Professor, Department of Orthodontics, Maringá University Center, PR Brazil, Luiz Renato Paranhos, Associate Professor, Department of Dentistry, Federal University of Sergipe UFS, Sergipe, Brazil, e-mail: paranhos@ortodontista.com.br, paranhos@ortodontista.com.br

Ossam Abu El Haje ,PhD Student, Department of Oral Biology, Universidade Sagrado Coração University, Bauru, São Paulo, Brazil,

Daniela Daufenback Pompeo ,PhD Student, Department of Oral Biology, Universidade Sagrado Coração University, Bauru, São Paulo, Brazil,

Gisela Crippa Furtado ,PhD Student, Department of Oral Biology, Universidade Sagrado Coração University, Bauru, São Paulo, Brazil,

Luciana Monti Lima Rivera ,Associate Professor, Department of Oral Biology, Universidade Sagrado Coração University, Bauru, São Paulo, Brazil,

Fabian Calixto Fraiz ,Associate Professor, Department of Stomatology, Universidade Federal do Paraná, Paraná, Brazil, Fabian Calixto Fraiz, Associate Professor, Department of Stomatology, Avenida Prefeito Lothario Meissner 632, Jardim Botânico, Curitiba, Paraná Brazil, Zip Code: 80210-170, Phone: 55 41 3360 4021, e-mail: fabianfraiz@gmail.com, fabianfraiz@gmail.com

Renato Cordeiro Gugisch ,Associate Professor, Department of Stomatology, Universidade Federal do Paraná, Paraná, Brazil,

Bianca Lopes Cavalcante-Leão ,MSc Student, Department of Stomatology, Universidade Federal do Paraná, Paraná, Brazil,

Liliane Moreira Macedo ,Pediatric Dentist, Private Practice, Curitiba, Paraná, Brazil,

Dileep Nag Vinnakota ,Reader, Department of Prosthodontic Dentistry, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India, Dileep Nag Vinnakota, Reader Department of Prosthodontic Dentistry, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India, Fax: +91-861-2305092, e-mail: dileepnagmds@yahoo.co.in, dileepnagmds@yahoo.co.in

V Vijay Sankar ,Reader, Department of Prosthodontic Dentistry, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India,

Naveen Chirumamilla ,Postgraduate Student, Department of Prosthodontic Dentistry, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India,

V Vamsikrishna Reddy ,Reader, Department of Prosthodontic Dentistry, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India,

Faezeh Khozeimeh ,Associate Professor, Torabinejad Dental Research Center, Department of Oral Medicine, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran, Faezeh Khozeimeh, Associate Professor, Torabinejad Dental Research Center, Department of Oral Medicine, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran, Phone: +98 913-3172090 e-mail: khozeimeh@dnt.mui.ac.ir, khozeimeh@dnt.mui.ac.ir

Omid Savabi ,Professor, Torabinejad Dental Research Center, Department of Prosthodontics Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran,

Masih Esnaashari ,Postgraduate Student, Dental Students-Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran,

Sérgio Luiz Pinheiro ,Professor, Department of Pediatric Dentistry, School of Dentistry Pontifical Catholic University of Campinas, Brazil, Sérgio Luiz Pinheiro, Professor Department of Dentistry, Rua Raul Gasparini No 525, Bairro: Panorama, Residencial Jardim das Palmeiras, Vinhedo-SP CEP: 13280000, Brazil, Phone: 55 11 992450090, e-mail: slpinho@puc-campinas.edu.br, slpinho@puc-campinas.edu.br

Diana Roberta Pereira ,Undergraduate Student, Department of Pediatric Dentistry, School of Dentistry Pontifical Catholic University of Campinas, Brazil,

Flávia De Milito ,Undergraduate Student, Department of Pediatric Dentistry, School of Dentistry Pontifical Catholic University of Campinas, Brazil,

Karina Teixeira Villalpando ,Professor, Department of Periodontics, School of Dentistry, Campinas São Paulo, Pontifical Catholic University of Campinas Campinas, São Paulo, Brazil,

Sophia Thakur ,Professor, Department of Conservative Dentistry and Endodontics, Bapuji Dental College and Hospital, Davangere, Karnataka, India,

VJ Narmatha ,Senior Lecturer, Department of Conservative Dentistry and Endodontics Army College of Dental Sciences, Secunderabad, Andhra Pradesh, India, VJ Narmatha, Senior Lecturer Department of Conservative Dentistry and Endodontics, Army College of Dental Sciences, Secunderabad, Andhra Pradesh India, Phone: 8331996080, e-mail: narmatha910@gmail.com, narmatha910@gmail.com

Sheetal Shetty ,Assistant Professor, Department of Conservative Dentistry, Faculty of Dentistry Melaka Manipal Medical College, Manipal, Karnataka, India,

Praveen Kumar Bali ,Senior Lecturer, Department of Pedodontics, College of Dental Sciences Davangere, Karnataka, India,

Majid Akbari ,Assistant Professor, Dental Research Center, School of Dentistry Mashhad University of Medical Sciences, Mashhad, Iran,

Reza Afshari ,Associate Professor, Medical Toxicology Research Center, School of Medicine Mashhad University of Medical Sciences, Mashhad, Iran,

Mahsa Sharifi ,Operative Dentistry Specialist, Department of Operative and Restorative Dentistry, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad Iran,

Seyed Isaac Hashemy ,Assistant Professor, Department of Biochemistry and Nutrition, Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran,

Sara Majidinia ,Assistant Professor, Department of Operative Dentistry, Faculty of Dentistry, Dental Material Research Center, Mashhad University of Medical Sciences, Mashhad, Iran, Sara Majidinia, Assistant Professor Department of Operative Dentistry, Faculty of Dentistry, Dental Material Research Center, Mashhad University of Medical Sciences, Mashhad, Iran, Phone: +98 5118829501, e-mail: majidiniaS881@mums.ac.ir, majidiniaS881@mums.ac.ir

Naser Karimian Tousi ,Student, Department of Biochemistry Laboratory, Faculty of Medicine Research Center, Mashhad University of Medical Sciences Mashhad, Iran,

Raviraj G Desai ,Professor, Department of Prosthodontics, PMNM Dental College Bagalkot, Karnataka, India,

Vikas Kamble ,Professor and Head, Department of Prosthodontics, PMNM Dental College Bagalkot, Karnataka, India,

Anand Kumar G Patil ,Professor and Head, Department of Prosthodontics, Mahsarovar Dental College Bhopal, Madhya Pradesh, India,

Mahtab Hamzeh ,Assistant Professor, Department of Pediatric Dentistry, Faculty of Dentistry Babol University of Medical Sciences, Babol, Iran, Mahtab Hamzeh, Assistant Professor Department of Pediatric Dentistry, Faculty of Dentistry Babol University of Medical Sciences, Babol, Iran, Phone: 00981113232456, e-mail: dr.mahtabhamzeh@yahoo.com, dr.mahtabhamzeh@yahoo.com

Mohammad Mehdizadeh ,Assistant Professor, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Babol University of Medical Sciences, Babol, Iran,

Kamran Nosrati ,Assistant Professor, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Babol University of Medical Sciences, Babol, Iran,

Aditi Chopra ,Department of Periodontology, Manipal College of Dental Sciences, Manipal University, Manipal, Karnataka, India, Aditi Chopra, Master, Department of Periodontology, Manipal College of Dental Sciences Manipal University, 203, Angels Court Behind KMC Library Vidyaratna Nagar Manipal-576104, Karnataka, India, Phone: +91-9739863908, e-mail: draditichopra@gmail.com, draditichopra@gmail.com

Karthik Sivaraman ,Department of Prosthodontics, Faculty of Dentistry, Melaka Manipal Medical College, Manipal University, Manipal Karnataka, India,

Tarun K Awataramaney ,Department of Dental Material, Manipal College of Dental Sciences, Manipal University, Manipal, Karnataka, India,

Bandar Alsuwayt ,Dentist, Hafer Al-Batin Dental Center, Ministry of Health, Hafer Al-Batin Saudi Arabia,

Waleed Alqahtani ,Intern, College of Dentistry, King Saud University, Riyadh, Saudi Arabia,

Ahmad Al-Dhafiri ,Dentist, Hafer Al-Batin Dental Center, Ministry of Health, Hafer Al-Batin Saudi Arabia,

Mosleh Al-Shamrani ,Consultant, Department of Pediatric Dentistry, King Saud Medical City Riyadh, Saudi Arabia,

Mojdeh Mehdizadeh ,Associate Professor, Department of Oral and Maxillofacial Radiology, School of Dentistry, Torabinejad Dental Research Center; Dental Implants Research Center, Isfahan University of Medical Sciences, Isfahan, Iran,

Navid Ahmadi ,Student, Department of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran, Navid Ahmadi, Student Isfahan Department of Dentistry, University of Medical Sciences Isfahan, Iran, Phone: +989131093769, e-mail: navid. ahmadi03@gmail.com, ahmadi03@gmail.com

Mahsa Jamshidi ,Assistant Professor, Department of Oral and Maxillofacial Radiology, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran,

Sara Abdulaziz Alfadda ,Director, Department of Prosthetic Dental Sciences, Graduate Program in Prosthodontics, College of Dentistry, King Saud University Riyad, Saudi Arabia, Sara Abdulaziz Alfadda, Director Department of Prosthetic Dental Sciences, Graduate Program in Prosthodontics, College of Dentistry, King Saud University Riyad, Saudi Arabia, Phone: (+966)-11-805-6142, e-mail: salfadda@gmail.com, salfadda@gmail.com

Anna Karina Figueiredo Costa ,PhD Student, School of Dentistry, Institute of Sciences and Technology Universidade Estadual Paulista, São José dos Campos, São Paulo, Brazil,

Thaty Aparecida Xavier ,PhD Student, School of Dentistry, Institute of Sciences and Technology Universidade Estadual Paulista, São José dos Campos, São Paulo, Brazil,

Tarcisio José Arruda Paes-Junior ,PhD Student, School of Dentistry, Institute of Sciences and Technology Universidade Estadual Paulista, São José dos Campos, São Paulo, Brazil,

Oswaldo Daniel Andreatta-Filho ,PhD Student, School of Dentistry, Institute of Sciences and Technology Universidade Estadual Paulista, São José dos Campos, São Paulo, Brazil,

Alexandre Luiz Souto Borges ,PhD Student, School of Dentistry, Institute of Sciences and Technology Universidade Estadual Paulista, São José dos Campos, São Paulo, Brazil, Alexandre Luiz Souto Borges, PhD Student, Av. Eng Francisco José Longo 777, Post Code: 12245-000, São José dos Campos, São Paulo, Brazil, Phone: +55 12 39479363, e-mail: aleborges@fosjc.unesp.br, aleborges@fosjc.unesp.br

Walid Ahmed Abdullah ,Associate Professor, Department of Oral and Maxillofacial Surgery, Dental College Mansoura University, Egypt; Dental College, King Saud University, Saudi Arabia, Walid Ahmed Abdullah, Associate Professor, Department of Oral and Maxillofacial Surgery Dental College, Mansoura University, Egypt; Dental College King Saud University, Saudi Arabia, e-mail: waa007@gmail.com, waa007@gmail.com

Hesham S Khalil ,Associate Professor, Department of Oral and Maxillofacial Surgery, Dental College, King Saud University, Saudi Arabia,

Maryam M Alhindi ,Assistant Professor, Department of Oral and Maxillofacial Surgery, Dental College, King Saud University, Saudi Arabia,

Mateus Rodrigues Tonetto ,Master's Student, Department of Restorative Dentistry, UNESP Araraquara (FOAr), São Paulo, Brazil,

Matheus Coelho Bandéca ,Professor, CEUMA University, Av. Josué Montello, n 1. Renascença 65.075-120, São Luis, Brazil, Head, Program of Dentistry, CEUMA University. Av. Josué Montello, n 1. Renascença 65.075-120, São Luis, Brazil,

Mônica Barros Silva ,Dental Student, Department of Prosthodontics, CEUMA University, São Luis Brazil,

Betina Grehs Porto ,Orthodontics Doctorate Student, Department of Pediatric Dentistry, School of Dentistry at Araraquara, UNESP – São Paulo State University, Araraquara- SP, Brazil, Betina Grehs Porto, Orthodontics Doctorate Student, Department of Pediatric Dentistry, School of Dentistry, Araraquara, Rua Humaita 1680, Araraquara-SP Brazil-14801-903, e-mail: betinagrehs@hotmail.com, betinagrehs@hotmail.com

Thiago Soares Porto ,Professor, Department of Restorative Dentistry, School of Dentistry at Araraquara, UNESP – São Paulo State University, Araraquara- SP, Brazil,

Renésio Armindo Grehs ,Professor, Department of Orthodontics, Federal University of Santa Maria, UFSM, Rua Marechal Floriano Peixoto, Santa Maria Rio Grande do Sul, Brazil,

Ary dos Santos Pinto ,Professor, Department of Pediatric Dentistry, School of Dentistry at Araraquara, UNESP – São Paulo State University, Araraquara- SP, Brazil,

Lourdes Aparecida Martins dos Santos-Pinto ,Professor, Department of Pediatric Dentistry, School of Dentistry at Araraquara, UNESP – São Paulo State University, Araraquara- SP, Brazil,

Sibel A Antonson ,Clinical Associate Professor, Department of Restorative Dentistry University at Buffalo, State University of New York School of Dental Medicine, Buffalo, New York, USA,

Ozlem Tulunoglu ,Clinical Instructor, Department of Pediatric Dentistry, Case Western Reserve University, School of Dental Medicine, Ohio, USA, Ozlem Tulunoglu, Clinical Instructor Department of Pediatric Dentistry, Case Western Reserve University, School of Dental Medicine, Cleveland, Ohio, USA Phone: 2167445884, e-mail: otulunoglu@yahoo.com, otulunoglu@yahoo.com

Ibrahim Fevzi Tulunoglu ,Associate Professor, Department of Comprehensive Care, Case Western Reserve University School of Dental Medicine, Ohio, USA,

Marc Campillo-Funollet ,Researcher, Department of Restorative Dentistry, School of Dental Medicine, University at Buffalo, State University of New York New York, USA,

Donald Antonson ,Professor, Department of Restorative Dentistry, School of Dental Medicine, University at Buffalo, State University of New York New York, USA,

Carlos Munoz-Viveros ,Professor, Department of Restorative Dentistry, School of Dental Medicine, University at Buffalo, State University of New York New York, USA,

Natalia Cimadon ,Department of Oral Pathology, School of Dentistry Universidade Federal do Rio Grande do Sul, Porto Alegre RS, Brazil,

Isabel Silva Lauxen ,Department of Oral Pathology, School of Dentistry Universidade Federal do Rio Grande do Sul, Porto Alegre RS, Brazil,

Vinicius Coelho Carrard ,Department of Oral Pathology, School of Dentistry Universidade Federal do Rio Grande do Sul, Porto Alegre RS, Brazil,

Manoel Sant'Ana Filho ,Department of Oral Pathology, School of Dentistry Universidade Federal do Rio Grande do Sul, Porto Alegre RS, Brazil,

Pantelis Varvaki Rados ,Department of Oral Pathology, School of Dentistry Universidade Federal do Rio Grande do Sul, Porto Alegre RS, Brazil,

Márcia Gaiger Oliveira ,Department of Oral Pathology, School of Dentistry Universidade Federal do Rio Grande do Sul, Porto Alegre RS, Brazil, Márcia Gaiger Oliveira, Professor Department of Oral Pathology, School of Dentistry Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2492/503 Porto Alegre, RS, 90035-003, Brazil, e-mail: marciago@gmail.com, marciago@gmail.com

Sukumaran Anil ,Professor, Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, Kingdom of Saudi Arabia,

Farouk Ahmed Hussein ,Lecturer, Department of Orthodontics, Faculty of Dental Medicine, Al-Azhar University, Cairo, Egypt, Farouk Ahmed Hussein, Lecturer Department of Orthodontics, Faculty of Dental Medicine, Al- Azhar University, Cairo, Egypt, e-mail: codriyadh@gmail.com, codriyadh@gmail.com

Mohammed Ibrahim Hashem ,Assistant Professor, Dental Health Department, Dental Biomaterials Research Chair, College of Applied Medical Sciences, King Saud University; Department of Dental Biomaterial, Al-Azhar University, Cairo, Egypt,

Elna P Chalisserry ,Researcher, Department of Oral Pathology, College of Dentistry, King Saud University, Riyadh, Saudi Arabia,

Syed Rashid Habib ,Assistant Professor, Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia,

Ana Pejcic ,Assistant Professor, Department of Periodontology and Oral Medicine, Medical Faculty, University of Nis, Nis, Serbia,

Rosnah Binti Zain ,Professor, Department of Oral and Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia,