The Effect of PIR and MRT on Muscle Stiffness and Pain in Individuals With Bruxism

NCT06450782 | Completed

• 1 other identifier: 13
• Study Type: interventional
• Target: 60
• Locations: 1 country
• Sites: 1

Brief Summary

Bruxism is a repetitive jaw muscle activity that occurs during sleep or while awake, characterized by teeth clenching or grinding. Bruxism affects millions of people worldwide and is considered one of the most harmful activities for the stomatognathic system due to its morphological, pathophysiological, psychosocial features and clinical consequences. Repetitive teeth clenching and grinding movements can cause spasms, stiffness, pain, and activity changes in the chewing muscles. Since bruxism is a disorder that depends on many variables, there is no single, specific treatment and multidisciplinary approaches are often required. Most treatment strategies are conservative and symptomatic, aiming to prevent the consequences of the disorder. The main purpose of physiotherapy techniques is to reduce the negative effects of bruxism on the chewing system. Physiotherapy techniques include exercises, manual therapy, electrotherapy, acupuncture, and posture awareness. It is not clear in the literature which physiotherapy techniques are effective in the management of bruxism; Therefore, more controlled studies need to be conducted. When studies in the literature are examined, no studies have been found that objectively investigate the effectiveness of relaxation techniques alone in people with muscle pain and increased muscle stiffness due to teeth clenching problems. Within the scope of this project, it is planned to investigate the effectiveness of the myofascial release technique (MRT) and post-isometric relaxation technique (PİRT) using the grastone tool.

Conditions

Bruxism; Post-isometric Relaxation Technique; Myofascial Release Technique

Outcome Measures

Primary Outcomes (2)

• Muscle Stiffness

  MyotonPRO (Muomeetria Ltd., Tallinn, Estonia) will be used to measure the stiffness of the muscles. This device works by producing a mechanical impulse on the skin over the muscle being measured. Mechanical oscillations of muscles created by mechanical impulses are measured by MyotonPRO. Muscle stiffness is measured in Newtons per meter (N/m). This method can determine the muscle's resistance to deforming forces or muscle stiffness. In the study, measurements will be made at room temperature at approximately 25°C, and after the participants sit on a chair for 5 minutes. During the measurement, participants will be asked to contact the SCM and masseter muscles with maximum force, and the most prominent location of the muscles will be marked. The stiffness of both muscles will be measured in both relaxed and maximum contraction conditions. All measurements will be taken 3 times and their averages will be calculated.

  1 Day

• Pain Intensity

  For pain intensity according to VAS, "no pain" is usually rated as 0 points and "worst pain imaginable" as 10 points (10 cm scale). Ranges for pain intensity; \<3 is mild pain, 3-6 is moderate pain, \>6 is severe pain.

  1 Day

Secondary Outcomes (1)

• Range Of Montion

  1 Day

Study Arms (3)

PIR Group

EXPERIMENTAL

Participants in the PIR Group will apply one session of post-isometric relaxation technique.

Other: Post-isometric Relaxation Technique; Other: Control

MR Grup

EXPERIMENTAL

Participants in the MR Group will apply one session of myofascial release technique.

Other: Myofascial Release Technique

Control Group

NO INTERVENTION

No intervention will be made to the participants in the Control Group.

Interventions

Post-isometric Relaxation Technique OTHER

Sternocleidomastoid muscle Participants are asked to stretch their necks in a spuni position and then turn their heads as far to the side of the target muscle (right side) as possible until a sensation occurs that causes discomfort in the targeted SCM. In this case, the participants are asked to moderately isometrically contract the SKM muscle for 5 seconds and then relax for 3 seconds and the cervical spine is moved to the new barrier. Masseter muscle Participants are positioned in a sitting position. The jaw is opened as wide as possible. The index and middle fingers of one hand are placed over the lower teeth. The weight of the hand is allowed to provide flexion and traction is applied directly to the midline. In this case, the participants are asked to moderately isometrically contract the bilateral masseter muscles for 5 seconds, then relax for 3 seconds and the participant moves his chin to the new barrier.

PIR Group

Myofascial Release Technique OTHER

Sternocleidomastoid muscle The head is slightly elevated with the help of a folded towel to prevent discomfort that may develop depending on the position. The researcher sits in a chair next to the participant's head. The chair is placed at approximately 45° to the participant's neck. The participant's head is rotated 30° towards the opposite side of the treated side. The Graston instrument contacts the upper part of the SCM approximately 2 cm below the mastoid process. Masseter muscle It works both ways. The Graston instrument is placed on the zygomatic process of the temporal bone, approximately 1 cm in front of the ear. The soft tissue is pressed until the bone is contacted. This connection with the periosteum is maintained and a lower tension line is created towards the mandible angle. This line of tension is continued up to the mandible, where the periosteum also comes into play. It is repeated several times.

MR Grup

Control OTHER

Participants will rest for thirty minutes.

PIR Group

Eligibility Criteria

• Age: 18 Years - 65 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Being diagnosed with bruxism Being willing and volunteer to work

You may not qualify if:

• Having a neurological, psychiatric or systemic disease Being addicted to alcohol and drugs Getting dental treatment or physical therapy Using an occlusal splint being pregnant actively having cancer Planning surgery for relevant areas Not having more than two molars Using removable dentures Receiving treatment for the temporomandibular joint in the last three months

Sponsors & Collaborators

• Istinye University: lead

Study Sites (1)

Yunus Emre TÜTÜNEKEN

Istanbul, Zeytinburnu, 34010, Turkey (Türkiye)

Location

MeSH Terms

Conditions

Bruxism

Interventions

Myofascial Release Therapy

Condition Hierarchy (Ancestors)

Tooth Diseases; Stomatognathic Diseases; Habits; Behavior

Intervention Hierarchy (Ancestors)

Massage; Therapy, Soft Tissue; Musculoskeletal Manipulations; Complementary Therapies; Therapeutics; Physical Therapy Modalities; Rehabilitation

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: June 5, 2024
• First Posted: June 10, 2024
• Study Start: June 15, 2024
• Primary Completion: August 15, 2024
• Study Completion: October 15, 2024
• Last Updated: April 17, 2025

Record last verified: 2025-04

Locations

TU (1)