Qualifications: Graduated from faculty of dentistry-Mansoura university 2003. Co - Author of the book Retreatments. Lecturer in international endodontic diploma - Jaume university I - Spain.

Qualifications: BDS, College of Dentistry, University of Baghdad. Registered GP Dentist, Iraqi Dental Association. Human Subject Research intensive course, Maryland, USA. Tropical Medicine course, Walter Reed Institute of Research, Maryland, USA. Dental implantology course, Chrité-Berlin University, Germany. Endodontic course, Cologne, Germany, 2015. Dental implant course, Hamburg University, Germany.

Qualifications: Invited speaker - Expodental Meeting 2018 (Rimini, RN, Italy)“Nuove frontiere in Endodonzia”. Best Poster Session - International Congress SIE 2018 (Milano). “Measurement of Operative Torque of two different instruments”. Awards - Best Poster 26th national congress CDUO 2019 Endodontology. “Influence of "Flat Design" on cyclic fatigue resistance”. Speaker for oral session on a freely chosen subject - National congress SIE 2019 (Bologna) “Influence of Rotary Glide Path on torque developed in a single instrument technique.” Speaker for oral session on a freely chosen subject - International congress ESE 2019 (Viennna) - “A new flat side design instrument: pros and cons.”

Qualifications: Autor y Coautor de 40 articulos cientificos publicados en revistas cientificas como JOE, IEJ, Clinica Oral Invetigations, BOR, EEJ, Aust. End J, JAOS, etc. Conferencista nacional e Internacional en diversos congresos en América Latina Colaborador del libro Cavidade pulpar del Dr. Clovis Monteiro Bramante (2016) Sócio fundador de la Sociedad de Endodoncistas del Azuay Ecuador

Qualifications: Profesora de Endodoncia Clínica. Universidad Americana / UAM, Nicaragua. Profesora Invitada de Endodoncia, Especialidad de Odontopediatria UNAN – León. Profesora Invitada de Endodoncia en el Instituto Odontológico de Especialidades de Tijuana, INODET – México. Conferencista en Congreso Internacional de Endodoncia 100% Online - 4ta Edición, Brasil.

Lecturer in Microscopic Dentistry field，RubberDam and Ergonomics. Held many lectures and courses locally and internationally Member of Jordanian Endodontic Society

Dr Emre Övsay is currently working as faculty member and a senior lecturer in Istınye University Faculty of Dentistry in Endodontics Department. He is experienced on micro endodontics, biomaterials, and micro endodontic surgery. His primary academic interests include #4 tapered anatomical shaping in endodontics, endodontic surgery and biomaterials in endodontics. He has ben invited to numerous conferences and educational programs about Endodontics. He is the consultant doctor of Fanta Dental Turkey. Dr Ovsay also teaches endodontics for undergraduate and post-graduate students in special educational training programs.

Qualifications : Graduated from the 'Faculty of Dentistry - Ss. Cyril and Methodius University' in Skopje Speaker at the symposium organized by the 'Macedonian Society of Endodontic Specialists', on a topic: "MB2 – One of the reasons for a treatment failure in upper molars" Specialized in the field of 'Endodontics and Restorative dentistry' Leading a series of hands-on courses for a continuous education in the field of 'Endodontics'.

Dr Radovan Jovanovic is either the author or co-author of many scientific papers and a regular participant in scientific gatherings and seminars. As a lecturer, he was a participant of several Continuing Medical Education courses. Dr Radovan also actively participates in organization and implementation of education in the field of machine instrumentation, microscopy in endodontics as well as micro-surgical endodontics procedures.

Irena Melih graduated in 2003 from the Faculty of Dentistry in Belgrade. Even then, she opted for the field of endodontics and restorative dentistry. From 2004 till today, she has been continuously engaged in clinical and scientific research. Professional development in this field results in the master's thesis, specialization, and then the doctoral dissertation in 2015. Prof. dr Irena Melih is the author of two textbooks and a large number of papers published in journals and presented at national and international congresses. She is a lecturer in numerous courses in the field of endodontics, restorative dentistry, and laser therapy.

Root canal treatment, Root canal retreatment, periapical surgery, Traumatic dental injuries treatments, Internal Bleaching, Apexogenesis and Apexification, and Revascularization treatments

Dr. Mohamed Sahbi Layouni,, graduated as Dentist Doctor of Medicine ,2002 from Danylo Halytsky Lviv state Medical University. obtained the Equivalency in 2004 from Faculty of Dentistry Monastir FMDM Tunisia. Excellent performance in micro dentistry