Effect of Transcutaneous Photobiomodulation on the Control of Chilhood Anxiety in Dental Care: Double- Blind Randomized Clinical Trial.

Generalized anxiety disorder (GAD) is a chronic psychiatric condition characterized by a widespread and disproportionate concern for adverse life circumstances and the anticipated occurrence of catastrophic and dramatic events. Often, the challenges of everyday life, whether potential or real, are feared, as they are expected to increase and lead to irreparable consequences. Currently photobiomodulation is a practice used in many areas of health successfully. In the area of anxiety disorders has shown very promising results improving patient behavior. If we understand that photobiomodulation is a non-invasive therapy and with enough evidence of its safety, we must investigate to complement traditional behavioral management techniques. The objective of this study is to investigate whether photobiomodulation (ILIB) helps, collaborates, in the management of the child's anxiety in the dental office.

The sample will be selected from the assistance centers that have an agreement with UCU, Federico Ozanam School, San José College, UCU University Health Clinic. Participants will be randomly distributed into 2 groups: experimental group (G1), control group or placebo (G2) where ILIB and placebo will be applied respectively. It will be evaluated in level of anxiety by: Facial Image Scale (FIS) and the Venham Imaging Test (VPT) in the conditioned room prior to dental care (16)(17). Physiological parameters will also be measured: blood pressure, oximetry, heart rate, pulse, weight, height. ILIB applications will be carried out in 2 clinical sessions with an interval between them of at least 48hrs.