Measuring Orthodontic Forces with HiBi FBG Sensors

Abstract

HiBi FBG are used to demonstrate a technique to evaluate orthodontic forces. The experiments are performed in an artificial maxilla supporting dental wax and metal teeth. The teeth are instrumented using an orthodontic technique and loads are applied representing auxiliary appliance. The values of the loads (extra-oral) are based on clinical applications. It is demonstrated that the tooth vestibular surface is subject to a force of 0.13 N. The size and sensitivity of the FBG allow for the determination of forces applied orthogonally to the surface of the teeth.

Orthodontic forces sensing with polymer PCF

“…This data serves as the basis for calibrating out the contribution of the fibre itself to the final measurements obtained below. The orthodontic force tests are carried out using an artificial maxilla made of an elastomer material and metal teeth 8,13 . The teeth were fitted with a fixed orthodontic appliance.…”

New Trends in Dental Biomechanics with Photonics Technologies

“…The sensors detected that the orthodontic forces were not transmitted to the surface of the maxilla and this information is important to elucidate about undesirable effects, such as tooth root resorption and local pain, during the orthodontic treatment. In similar studies, the authors have applied other kinds of optical fiber sensors, such as crystal fibers (PCF), FBG, and Hi-Bi FBG, to the evaluate the force transmitted by orthodontic mini implants [128,129] and orthodontic appliances [130]. Other studies also had instrumented orthodontic devices and an acrylic model jaw with FBG to evaluate the differences in the strain transmitted by two orthodontic devices [131].…”

The Use of Fiber Bragg Grating Sensors in Biomechanics and Rehabilitation Applications: The State-of-the-Art and Ongoing Research Topics

“…Low magnitude applied forces caused by orthodontic systems are considered more effective for moving the teeth than impulsive loads. Therefore, Milczeswki et al [79] investigated the forces applied onto the surface of an incisor by orthodontic system using FBG technology. The experiments were performed in an artificial maxilla with dental wax and metal teeth and the teeth were instrumented with a fixed orthodontic appliance.…”