Dr. Marc Kaloustian – Lebanon

Dr. Marc Kaloustian – Lebanon

Professor Marc Kaloustian completed his DDS degree from the Saint Joseph University of Beirut in 1999.

He then obtained a Certificate in Advanced Education in General Dentistry from Boston University, Goldman School of Dental Medicine in 2000.

He pursued a Masters in Endodontics, Masters in Biomaterials and obtained his PhD in 2020 from the Saint Joseph University, Lebanon with honors. 

He is currently a Clinical Professor at the Department of Endodontology at the Saint Joseph University Dental School, Lebanon where he supervises undergraduate and postgraduate students.

He is also lecturer at Jaume I University spain and in the Masters program in endodontics at the Siena University Italy.  

Pr Kaloustian is the president elect  of the Lebanese Society of Endodotology and co-organizer of many international endodontic meetings. He is also a Gold member of Style Italiano Endodontics, an international lecturer with many publications in indexed journals.

Pr Kaloustian has a private practice in Beirut limited to Endodontics and works as endodontist in the United Arab Emirates at the American Dental Center (Abu Dhabi) and Oris Dental Clinic (Al Ain) .


Teach me how to instrument calcified canals


Calcified teeth present unique challenges during root canal treatment, often necessitating advanced techniques and technologies to achieve successful outcomes. This presentation aims to explore two cutting-edge approaches, operating microscope utilization with ultrasonic tips and guided endodontics, as means to enhance precision and success rates in the treatment of calcified teeth.

The operating microscope provides unparalleled visualization, enabling endodontists to navigate complex root canal systems with enhanced clarity and accuracy. By magnifying the treatment area, it facilitates the identification and negotiation of calcified canals, resulting in more efficient removal of dentinal obstructions using burs and ultrasonic tips.

In addition to the operating microscope, guided endodontics has emerged as a revolutionary tool in the management of calcified teeth. Through advanced imaging techniques and computer-aided planning, this approach allows for precise preoperative assessment and virtual guidance during treatment. By creating three-dimensional models and accurate drilling paths, guided endodontics minimizes the risk of procedural errors and ensures optimal canal access in complex cases.

During this presentation, we will delve into the advantages of utilizing the operating microscope and guided endodontics in calcified teeth cases. We will discuss the step-by-step application of these techniques, highlighting their impact on clinical decision-making, treatment planning, and execution.

By harnessing the power of the operating microscope and guided endodontics, endodontists can overcome the challenges posed by calcified teeth, leading to more predictable and successful root canal treatments. This presentation aims to empower dental professionals with the knowledge and insights necessary to incorporate these advanced techniques into their clinical practice, ultimately improving patient outcomes and satisfaction.


Post removal: show me how


This workshop aims to provide a comprehensive hands-on learning experience focused on the removal of fiber posts, screw posts, and cast post and cores prior to endodontic retreatment. The successful management of these restorations is crucial in achieving optimal outcomes for patients requiring retreatment.

Subsequently, the workshop will then proceed to the removal of screw posts, which often present unique challenges due to their threaded design. Participants will engage in hands-on exercises using ultrasonic tips to dislodge the luting cement and unscrew the post.

The second part will focus on the removal of cast post and cores. Participants will learn various approaches, including sectioning, and the use of dental bur systems, and special ultrasonic tips, through interactive demonstrations and practical sessions. Emphasis will be placed on preserving tooth structure while effectively dislodging these restorations.

The workshop will then cover various techniques for removing fiber posts. Participants will have the opportunity to observe and learn how to employ ultrasonic tips to eliminate these posts in a conservative way under high magnification.

Throughout the workshop, participants will have the opportunity to engage in discussions with the instructors, share their experiences, and seek guidance on specific cases or challenges they may have encountered in their clinical practice.