Nowadays, dentists use small electric anesthesia machines.
It has a pen-like shape that is easy to hold, and easy for practitioners to inject liquid by selecting the flow rate and number of treatments. Keeping the design simple contributes to alleviating patients' fears.
Orbray's small motor has no cogging (magnetic catch), so it achieves stable drive at a constant speed. (A steady rate of injection may also reduce pain.) Motor noise can also be frightening to patients, so a quiet motor is preferred. The quietness of the Orbray small motor has been evaluated and is being used.
Keywords
Responsiveness / Quietness
