This article is based on a webinar hosted by Dr. David BONHOMME for Endo-Academie. Dr. Bonhomme is the director and founder of InvizionDS
Ergonomics in Endodontics: Fewer MSDs, More Precision (and a Thriving Practice)
If you practice endodontics, you already know that technique isn't everything. The quality of a treatment also depends on what happens around the operating field. Organization, accessibility of materials, and working posture determine your ability to remain precise, focused, and consistent, especially under the microscope.
David Bonhomme emphasizes a simple point: ergonomics is not a dogma. It's a response to practical problems. And these problems have a measurable cost, both in terms of health and efficiency.
The Hidden Cost of Organization: The "Out-of-Chair" Time That Wears You Out
One idea comes up repeatedly: setup and tidying can account for a huge portion of a session's time, sometimes up to a fifth. This time does not increase the clinical value of the procedure or the patient experience. It mainly adds repetitive micro-tasks that are physically and mentally fatiguing.
This "out-of-chair time" is often underestimated because it's broken down into dozens of tiny actions. Individually, they seem harmless. Accumulated over a day, then over a year, they become a real burden, and eventually degrade the quality of attention in the chair.
MSDs: Why Your Body "Pays" for Endodontics Over the Years
MSDs (Musculoskeletal Disorders) don't just come from a single bad posture. They come from repetition, distance, and twisting. When you have to reach out of your comfortable zone, twist your torso to access a drawer, or raise or lower your head to find a consumable, you create cumulative mechanical stress.
David Bonhomme also points out the existence of a visual zone. Beyond a certain angle, it's no longer the eye that "works", but the neck. And in endodontics, where the same movements are repeated for a very long time, the sum of small compensations eventually turns into great fatigue.
The "Reach Zone": The Simplest Rule to Improve Your Working Posture
The central idea is to bring useful materials into the zone where the body exerts the least effort, where the hands work close to the torso, without extension or twisting. This is not an abstract theory. It's a way to reduce "parasitic" movements that cause you to lose focus.
In practice, your working posture becomes more stable when frequently used objects are in the right place. The rest can be further away, provided they are clearly identified. In other words, frequency of use should dictate proximity.
Four-Handed Dentistry Under the Microscope: Ergonomics Becomes a Clinical Imperative
The more you work under the microscope, the more you need to maintain your focus. Moving out of your zone to "search" breaks the rhythm, increases stress, and prompts the assistant to interrupt you. Ergonomics then serves to ensure precision by reducing sequence disruptions.
In this logic, the assistant is not just "a helper." Their role is to streamline care, shorten instrument trajectories, and support consistent execution. Organization must therefore also be designed for them, so that they don't have to "surf" on their stool to reach consumables placed too far or too high.
Drawers, Trays, Tubs: What Really Matters Is the Number of Manipulations
The webinar highlights a common mistake: confusing "storage" with "accessibility." Drawers can give a feeling of capacity and comfort. But if they create a conflict with the stool area, force you to twist, or make you open several compartments to check stock, they add movements and fatigue.
The same applies to "tub" type solutions when they are integrated too high, too far, or with internal tiers that multiply grasping and opening actions. The challenge is not to judge a format, but to measure the reality: how many movements to access, how many movements to set up, how many movements to store.
Two Concrete Tools to Bring Materials Closer and Reduce Unnecessary Movements
An interesting solution to limit repeated drawer opening is to make consumables visible and immediately accessible. This is precisely the objective of the ID TUB, designed as a compartmentalized organization that allows access to products without searching and without multiple openings. Used in the correct access zone, it helps reduce manipulations and simplify restocking.
For transfers at the chair, especially under the microscope, the ergonomic Bodytray goes in the same direction: shortening pathways. Placed directly on the patient's chest, it stabilizes a working area very close to the operating field and the assistant-practitioner exchange zone. As a result, the instrument trajectory is shorter, the working position is less "strained," and the workflow becomes smoother, from anesthesia to obturation.
The Right Goal: A Session Quicker to Set Up, Simpler to Execute, Easier to Repeat
Ergonomics in endodontics is not meant to confine you to an ideal posture. It aims to eliminate what costs you without providing value: unproductive movements, searching, multiple openings, twisting, and loss of focus.
By reducing these frictions, you mechanically reduce the risk of MSDs, protect your clinical attention, and make the organization more "scalable" for the team. These are exactly the types of gains that are visible at the end of a day, and even more so at the end of a year.
Q&A on Ergonomics in Endodontics, Working Posture, and MSDs
- Why is ergonomics so important in endodontics?
Because endodontics involves long and repetitive movements, often under the microscope, and organization directly influences precision, fatigue, and the risk of MSDs.
- What most often triggers MSDs in the practice?
The repetition of small stresses: an outstretched arm, torso twisting, a bent neck or visual extension, and unnecessary manipulations related to storage.
- How can you quickly improve your working posture?
By bringing frequently used consumables into the reach zone close to the torso and avoiding any access that requires significant twisting or bending.
- Does working under the microscope change the game for ergonomics?
Yes, because loss of focus is costly. It requires a four-handed organization where the assistant can transfer without causing you to break focus.
- Are drawers necessarily a bad solution?
No, but they become problematic if they create a conflict with the stool area, require twisting, or force you to open and search too often.
- What is an ID TUB used for in an ergonomic context?
To make consumables visible and accessible without multiple openings, which reduces manipulations and supports more consistent organization.
- What is the Bodytray used for in endodontics?
To shorten instrument trajectories at the chair by creating a transfer zone very close to the operating field, particularly useful in four-handed dentistry.
- What is the best indicator that an organization is "good"?
When setup is quick, access is obvious without thinking, and the session proceeds with fewer wasted movements and less fatigue at the end of the day.
