Somatosensory Training Versus Exercise Therapy in Awake Bruxism

Summary

Awake bruxism (daytime teeth clenching or jaw tension) is a common condition that can cause jaw pain, facial pain, muscle fatigue, and reduced quality of life. Although current treatments often focus on the jaw muscles and posture, recent research suggests that changes in the brain's sensory processing may also play an important role in bruxism-related pain.

This randomized controlled trial aims to compare two physiotherapy-based treatment approaches with a wait-list control group in adults with awake bruxism. Participants will be randomly assigned to one of three groups: (1) somatosensory awareness-based training, (2) jaw and posture exercise therapy, or (3) a wait-list control group.

The somatosensory training program focuses on improving body awareness and sensory perception of the face and jaw, while the exercise program includes jaw mobility, postural alignment, and cervical exercises. Both active interventions will be delivered over a 4-week period. Participants will be assessed at baseline, immediately after treatment, and during follow-up to evaluate changes over time.

The main outcome of this study is orofacial pain intensity. Secondary outcomes include jaw function, sensory processing, muscle structure, oral parafunctional behaviors, and oral health-related quality of life. The results of this study may help improve physiotherapy-based treatment strategies for people with awake bruxism by addressing both physical and sensory aspects of the condition.

Conditions

• Bruxism

Interventions

OTHER

Jaw exercise therapy

Participants assigned to this group receive a structured jaw and posture exercise therapy program delivered by a physiotherapist. The intervention consists of supervised face-to-face sessions twice per week over a 4-week period, combined with a home exercise program performed on non-supervised days. The program includes jaw mobility and relaxation exercises, postural correction and stabilization exercises, and cervical region exercises. In addition, manual therapy techniques are applied as clinically indicated, including ischemic trigger point therapy, cervical joint mobilization, and intraoral manual techniques. Each treatment session lasts approximately 40-45 minutes. Adherence to the home exercise program is monitored throughout the intervention period.

OTHER

Somatosensory Awareness-Based Training

Participants in this group receive an individualized somatosensory awareness-based training program designed to target altered sensory perception and body schema related to the face and jaw. The intervention focuses on laterality recognition, body schema representation, and tactile discrimination, including two-point discrimination-based tasks. No conventional exercise therapy or manual therapy techniques are provided in this group. The training is delivered using a flexible, patient-specific approach, supported by structured guidance materials aimed at increasing daily awareness and self-monitoring of somatosensory experiences. Participant adherence and engagement are monitored through regular follow-up and self-report tracking.

OTHER

Wait-List Control

Participants allocated to the wait-list control group do not receive any active treatment during the initial study period and continue their usual daily activities. All outcome assessments are conducted at the same time points as the intervention groups. After completion of the assessment phase, participants in this group are offered exercise therapy according to clinical need.

Sponsors & Collaborators

• Aydin Adnan Menderes University

  lead OTHER

Principal Investigators

• Gul Oznur KARABICAK, PhD · Aydin Adnan Menderes University

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Model

PARALLEL

Eligibility

Min Age

18 Years

Max Age

45 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2025-12-16

Primary Completion

2026-10-31

Completion

2026-12-31

Countries

• Turkey (Türkiye)

Study Locations