Ergonomics plays a significant role in everyday dental practice. One’s own posture, the workplace equipment and the choice of tools and instruments are important factors in creating an ergonomic working environment and thus preventing health problems.
Hand instruments / dental instruments
Practitioners achieve perfect results with hand instruments. This is especially due to the good tactile sensitivity and the precise handling of the fine working end. In particular, when working with hand instruments, it is important to pay attention to ergonomic use and the right choice of instruments. The pressure applied should be kept to a minimum in order to be gentle on the muscles.
Attention should be paid to the following points during their use:
- Modified pen grasp
- Working angle
- Work technique
- Work system
Hand instruments are held in a modified pen grasp.
The thumb, index and middle finger are positioned together to form an entity. The thumb rests between the index and middle fingers on the opposite side of the instrument. The index finger provides support. It also serves as a support point for changing the angle of the instrument. If possible, always rest your hand intraorally. If it is supported extraorally, there is a risk of slipping. The movement does not come from the fingers but from the whole arm. This prevents joint and ligament damage.
Lowering the forearm and moving it in the opposite direction over the ring finger support moves the instrument coronally. The front third of the working end must be modified. The working angle differs according to the type of instrument. With scalers or universal curettes, the terminal shank must be inclined approx. 20° to the tooth axis. Gracey and Double Gracey curettes already have this angle predefined due to their sloping facial surfaces, meaning that the terminal shank must be placed parallel to the surface to be treated.
The development and production of American Eagle instruments primarily focused on ergonomic aspects. The use of wider handles allows for work that is easy on the muscles. At the same time, special attention was paid to good grip. The grip structure of both metal and plastic handles has been optimally designed. EagleLite® plastic handles offer unrivalled tactility with their lightness, thus supporting work that is gentle on the patient.
Correct sharpening also plays a significant role in ergonomics. Incorrect geometry and inadequate cutting edges result in significantly more effort for the practitioner. American Eagle sharpen-free instruments with XP Technology® offer the solution here. In this way, the curette blades remain perfectly round throughout their entire service life and are not sharpened into scalers. Thus the typical error of incorrect cutting edges on the instrument is no longer an issue.