In oral care, both precision and freedom of movement are essential. See how they come together at work.
About ergonomics, variety and a task chair that moves with you.
You are concentrating on the treatment. The light is positioned correctly, your instrument is ready and you can see the working area. Then the procedure changes. You want to look from a different angle, get a little closer or continue on the other side. Your attention remains on the patient, while your body seeks a new working position.
In such small transitions, ergonomics becomes very concrete. Can you easily move with what the treatment requires? Do your task chair, visibility and the patient's position align? And how much room is left to change posture when you are working precisely?
Dynamic sitting adds an option: a seat that moves with you. With Sit-i Oris, you can also move smoothly around the treatment chair. This raises an interesting question. How can you combine the precision of your work with the space to move during your work?
Your working posture begins with the treatment
The mouth is a small working area in which you perform very different procedures. What you want to see and achieve partly determines where you will sit. One time you work close by, the next time you choose a different viewing direction. The patient's position, the lighting and the placement of your instruments also play a role.
Perhaps you recognise the moment when you lean just a little further forward to see better. Or when you keep turning further towards a different working area from the same spot. Such a posture arises during work. To understand what is happening, it therefore helps to look at the entire procedure: what do you want to be close to, what do you want to see and what space do you have for that?
Research on oral care describes prolonged working postures and repetitive procedures as possible occupational risk factors for physical complaints. The connections differ between studies and do not provide a simple explanation for the complaints of one person. [1] They do make clear why attention to the way the work is performed is relevant.
A photo shows how you are sitting at one moment. A treatment also shows how you get there and how you continue. Precisely that progression can provide new insights. Perhaps a different place around the patient can be useful. Perhaps the lighting deserves attention, or an instrument is always just out of easy reach. Ergonomics then gets a recognisable starting point in your own work.
Good visibility gives you other choices
When you want to see a working area better, it is obvious to bring your head closer to it. Yet you can also look at what can be changed in the setup. The patient's position, the light, your working distance and any magnification all belong to the same question: how do you get good visibility for this procedure?
That connection between looking and sitting can be found in scientific research. A systematic review from 2024 investigated the use of magnifying loupes in tooth preparation. The eleven included laboratory studies involve a total of 410 dental students. In the six studies that assessed the working posture, the results indicated a more favorable posture when using loupes. No difference was found for the quality of the preparations. [2]
That is a useful insight: an aid for your visibility can also make a difference to the way you sit. The findings concern students in a practice situation and the measured working posture. Whether this also prevents complaints during years of treating is a different research question. [2]
For your own treatment room, this means that it is useful to look at visibility and sitting position together. When you change the seat height, you reassess the working distance. When you switch treatment sides, you also look at the light and the patient's head position. A task chair thus gets its place in a setup tailored to the procedure.
There is often an interesting discovery. What at first seemed to be a question about your own posture can also turn out to be a question about the setup. You get more points of departure as soon as you include the entire working situation.
Variety is also in small transitions
When thinking about variety, you might first think of standing up for a moment or walking a bit. Those moments have their own place in the workday. During a treatment, there are also smaller transitions: shifting your weight slightly, giving the seat a different direction or sliding the chair to the next working position.
On Sit-i, the seat can tilt and turn. It responds to the movement you make and thus offers space to change your sitting position. You can experience this calmly first: what happens when you shift your weight, how does a small tilt feel and how does the seat move with you when you turn?
In the treatment room, that freedom of movement gets a concrete application. When changing the viewing direction, a small seat movement can fit. To reach the other side of the patient, you may want to move the entire chair. Both movements have their own function. One changes your position on the seat, the other your place in the room.
This makes variety something you can connect to the procedure. Another position is available when the work calls for it. You can stay close during a fine procedure and then again make room for the transition to the next working area.
Outside the treatment, you can also look at those transitions. A conversation, documentation and preparing the next patient offer other possibilities to sit, stand or walk. Small movements on a seat and moving outside the chair are different forms of variety. By looking at the entire workday, you see where both can have a place.
Precision and freedom of movement belong to the same workday
During precise work, you want to be able to focus your attention on what your hands are doing. Sometimes a calm position fits that. At another moment, the treatment precisely calls for a relocation. That varies, even within the same treatment.
The best way to get to know a dynamic task chair is through different tasks. How does the seat feel during a calm procedure? How does the transition go when you want to turn or come closer? And what happens when you choose a working position again afterwards? This is how you discover how the movement possibilities align with what you do.
Suppose you want to continue on the other side. From your current spot, you might still just reach the working area. You can also slide with the chair earlier and readjust the light. It is valuable to compare those two working methods in a practice situation. Where do you sit comfortably, what can you see well and how accessible do your instruments remain?
The outcome does not have to be the same for every procedure. It is about recognising useful choices. A small adjustment may be enough at one moment; a different place by the patient may fit better at another moment. This is how you assess freedom of movement from the precision your work requires.
What can the shape of a seat change?
Alongside movement, the shape of the seat also plays a role in choosing a task chair. A saddle seat gives a different starting position than a conventional seat. How that works out during oral care was investigated in a systematic review and meta-analysis by Gouvêa and colleagues. With saddle seats, they found on average lower posture-related risk scores than with conventional chairs. The analysis was based on two studies with a total of 150 second-year dental students working with practice heads. [3]
Those scores map out the characteristics of the working posture. They tell something about the posture during the investigated task, and do not measure future pain. That distinction helps to assess the findings: a seat can influence the assessed working posture, while the effect on long-term complaints remains open. [3]
Another systematic review also found indications for more favorable working postures with saddle seats and magnifying loupes. Within that review, no included study investigated the effect of saddle seats on physical pain. For loupes, there were indications for relief of certain shoulder, arm and hand complaints, with little evidence about neck pain. [4]
With a dynamic saddle seat, seat shape and movement possibilities come together. They are two properties that you can experience separately during an introduction. How does the starting position feel? What space do your legs have? What changes when you tilt or turn? Research on saddle seats provides background information about the seat shape; it does not prove an effect of a dynamic mechanism by itself. [3, 4]
For a suitable choice, your work remains the connection between those properties. You want to experience how you sit on the chair and how you go to another working position with it. Precisely that combination deserves attention during the trial.
Working more comfortably means considering the whole situation
The attention to ergonomics in oral care has a clear background. In a systematic review and meta-analysis of research from Western countries, neck, lower back and shoulder complaints were very common. The combined estimates for complaints in the past year were around 59 percent for neck complaints, 56 percent for low back pain and 43 percent for shoulder complaints. The investigated groups, definitions and measurement periods differed. These figures therefore describe the combined research, not the current situation in the Netherlands. [1]
Those findings raise a clear follow-up question: which changes help? In doing so, it is important to know what you want to achieve. Changing a working posture, performing a procedure more pleasantly, reducing existing complaints and preventing new complaints are different outcomes. Research on one of them does not automatically answer the other questions. [3–7]
The Cochrane review on the prevention of new physical complaints among oral care professionals found two suitable studies with a total of 212 participants. The certainty of the evidence was low to very low. Therefore, the authors could not draw a firm conclusion about prevention through ergonomic interventions. [5] A more recent systematic review from 2025 described five randomised studies and reported favorable complaint outcomes with different ergonomic measures. The approaches varied, so no best chair or fixed solution for every practice follows from that. [6]
The systematic review by Jailan and colleagues from 2026 adds research on education, exercises, aids and participatory ergonomics. In the nine included randomised studies, among other things, short-term benefits were reported. The strength of evidence varied from low to moderate; much research on aids took place in laboratory situations with a limited follow-up period. [7]
The collective insight is useful for practice: look specifically at a working situation and state which result you want to assess. Do you want to switch treatment sides more easily? Do you want to reach an instrument better? Or is it about complaints that require an individual assessment? A clear question makes it easier to choose an adjustment and discuss afterwards what that has yielded.
What do you discover when you look together?
A treatment room is used by multiple people. The place that is pleasant for you also affects the workspace of your assistant. A different instrument setup can change something for both. Looking together makes visible what each experiences during the same procedure.
The review from 2026 discusses participatory ergonomics: professionals contribute to identifying problems and changes in their own work. The most favorable long-term finding within that review came from one study on such an approach. That is an indication of the possible value of team involvement, with still limited certainty about the best implementation. [7]
You can start small, with a situation that comes back regularly. For example, a procedure where you reach far or a transition where you leave each other little space. Describe what happens and try one feasible change. Afterwards, it is especially interesting how that change works out during the real work.
Perhaps a different chair position yields more space, but the instruments still need to be moved. Perhaps something works pleasantly during one treatment and calls for further adjustment during another. Such experiences make the conversation concrete. Ergonomics thus becomes something you continue to develop together in practice.
What does this mean for Sit-i Oris?
Sit-i Oris was developed for oral care, where working close by and changing position alternate. The narrow saddle seat gives space to your legs. The seat can tilt and turn, while the smoothly mounted skate wheels make it possible to move around the treatment chair. This allows you to adjust both your sitting posture and your place by the patient.
You discover the meaning of that during recognisable procedures. How does it feel to slide a little closer? What does the seat do when you shift your weight? How does a transition to another treatment side go? The chair provides movement possibilities; your way of treating determines when and how you use them.
Therefore, getting acquainted with Oris also includes attention to the rest of your setup. Adjust the seat height, check the range of your feet and the controls and assess the visibility of the working area. Start in a calm practice situation, so you can feel how the chair responds before you treat with it. Afterwards, include different activities in your experience.
The scientific reviews in this article help to ask questions about ergonomics carefully. They have not demonstrated a specific reduction or prevention of complaints through Oris. You can, however, connect the product choice to concrete properties: the seat shape, the moving with you and the mobility that you want to use in your treatment room.
Discover movement with Spark
For Oris, learning begins with your own work procedure. In Spark, the freely accessible introduction from the Sit-i Academy, you can investigate how dynamic sitting feels and which movement possibilities you recognise in your work. Sit-i Pro is not necessary for that.
Try, for example, the transition to another treatment side: where do you have support, when do you move the chair and what changes in your reach? This way, Spark gets a direct connection with the daily oral care practice.
See. Feel. Refine. Improve. gets meaning in your daily work. You see how a procedure goes and feel what freedom of movement is available. You refine the alignment between yourself, the chair and the treatment setup. Then you assess what that change yields for the work you want to do. This is how an initial experience grows into insight that you can use.
What can we conclude?
Ergonomics in oral care becomes concrete when you look at the connection between the treatment, visibility and the space to move. The procedure changes, and thus another working position can also become suitable. Variety gets a place in small seat movements, in moving around the patient and in the transitions to other activities.
Systematic reviews show that physical complaints are very common and that certain ergonomic aids can change the assessed working posture. For the prevention of complaints and the long-term effects, the certainty is more limited. That knowledge helps to align expectations with what has actually been investigated. [1–7]
With Sit-i Oris, you can experience how a dynamic seat and mobility align with your treatments. Take a familiar procedure as a starting point and discover where a different position gives space. Look at what changes, feel how the chair moves with you and refine the alignment with your workplace. That is where the connection between precise work and freer movement begins.
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Academy · Spark — view the learning pathway
Scientific sources
The publications below support the numbered statements in this article. They are systematic reviews and meta-analyses; the certainty of the evidence varies per intervention, outcome and quality of the underlying studies. They do not form product-specific evidence for Sit-i Oris.
[1] Lietz, J., Kozak, A., & Nienhaus, A. (2018). Prevalence and occupational risk factors of musculoskeletal diseases and pain among dental professionals in Western countries: A systematic literature review and meta-analysis. PLOS ONE, 13(12), e0208628.
https://doi.org/10.1371/journal.pone.0208628
[2] Costa, R.-T.-F., Miranda, S.-B., Montes, M.-A.-J.-R., Ribeiro, A.-K.-C., Carreiro, A.-F.-P., & Moraes, S.-L.-D. (2024). Impact of using magnifying dental loupes on clinical performance during tooth preparation: A systematic review. Journal of Clinical and Experimental Dentistry, 16(2), e186–e197.
https://doi.org/10.4317/jced.61098
[3] Gouvêa, G. R., Vieira, W. A., Paranhos, L. R., Bernardino, Í. M., Bulgareli, J. V., & Pereira, A. C. (2018). Assessment of the ergonomic risk from saddle and conventional seats in dentistry: A systematic review and meta-analysis. PLOS ONE, 13(12), e0208900.
https://doi.org/10.1371/journal.pone.0208900
[4] Plessas, A., & Bernardes Delgado, M. (2018). The role of ergonomic saddle seats and magnification loupes in the prevention of musculoskeletal disorders. A systematic review. International Journal of Dental Hygiene, 16(4), 430–440.
https://doi.org/10.1111/idh.12327
[5] Mulimani, P., Hoe, V. C. W., Hayes, M. J., Idiculla, J. J., Abas, A. B. L., & Karanth, L. (2018). Ergonomic interventions for preventing musculoskeletal disorders in dental care practitioners. Cochrane Database of Systematic Reviews, 2018(10), CD011261.
https://doi.org/10.1002/14651858.CD011261.pub2
[6] Gauthaman, J., & Ganesan, A. (2025). Ergonomic Interventions in the Dental Setups and Their Role in Preventing Musculoskeletal Disorders among Dentists: A Systematic Review. Journal of Lifestyle Medicine, 15(1), 18–25.
https://doi.org/10.15280/jlm.2025.15.1.18
[7] Jailan, C. J., Ruslan, N. H., Mohd Aris, M. S., Anwar, D. S., & Mohd Radzi, N. A. (2026). Individual and participatory ergonomics for dental professionals: a systematic review of randomised controlled trials. BMC Oral Health. Early online published, accepted version of September 10, 2026.
https://doi.org/10.1186/s12903-026-09641-4
Scientific justification: these studies describe physical complaints and ergonomic interventions in oral healthcare. They distinguish between working posture, experienced complaints, and prevention. They do not provide product-specific evidence that Sit-i Oris prevents or reduces complaints.