Biomechanical study of dentists’ posture

Biomechanical study of dentists’ posture when using a conventional chair versus a saddle-seat chair

8.12.2016, University of Porto, Porto, Portugal

Objectives: This study aimed to provide information about dentists’ body posture on a conventional chair vs. a saddle-seat chair while performing dental procedures. Information was obtained using inertial motion sensors.

Methods: Twenty-four dentists performed a Class I cavity in the upper right and left first molars and lower right and left first molars. Nineteen dentists worked on a conventional chair (KaVo, Germany /Group I), and five on a saddle-seat chair (Salli, Finland /Group II). Kinematic measurements of the whole body were registered using Xsens® MVN BIOMECH.

Results: Both groups worked with a pronounced forward head position. Lateral flexion of the head was similar between groups, and head rotation was more evident in Group II. Regarding trunk position, Group II showed less forward leaning and lateral flexion than Group I. Arm elevation of both the left and right arms was more pronounced in Group I during all dental tasks. However, Group I showed better left-hand posture. Anterior rotation of the pelvis was most evident while working on the lower jaw in Group II.

Conclusions: This study suggests that the saddle seat improves the working posture regarding pelvis rotation, arm elevation, and trunk flexion.

You can read the whole study here.

Search our website

    ★ Reviews

    See what our customers say.

    55 reviews
    96%
    (53)
    4%
    (2)
    0%
    (0)
    0%
    (0)
    0%
    (0)
    good

    chair is awesome, however, back rest material is wearing very quickly, slight rubbing on belt

    S
    Salli Sway
    S.C.
    Great purchase

    Amazing purchase, great customer service, quick delivery time and answered all my questions. I'm surprised at how great the wheels slide on the floor and how much better my posture is.

    Thanks Stephanie, glad you are loving it.
    My spine thanks you

    I am really feeling the benefits of the seat. I have stuffed neck and shoulder problems for years and am feeling that I am gaining benefit from sitting better at my office virtually every day. I highly recommend this chair to anyone who works at a desk but don't wait until you are desperate. Do it before the troubles start!

    Thanks for the great review Kristine. Yes - you are absolutely correct, prevention is better than cure.
    A stunning product

    From the first point of contact through to delivery of the chair, your service and communication was amazing. Nothing was too much bother and the quality of the chair is everything that was promised. Now looking forward to becoming very good friends with my Saddle Seat. I am expecting this to take time while the body adjusts to a new way of sitting but already I can feel my back re-aligning while working at my desk. Thank you for a wonderful product.

    Thanks Jeni, it will keep getter better and better!
    Everything I hoped for!

    I am a remedial massage therapist and needed a chair that moved quietly over a hard floor without the normal clatter of plastic castors. I purchased my Salli chair with the optional inline castors which are whisper quiet and glide effortlessly. I also upgraded to a comfy red leather seat which makes the chair look fast even when it isn’t moving! Customer service was sensational. Excellent buying experience. Highly recommend Salli chairs.

    Thanks for the great review Gary - keep on rollin' !