Lumbopelvic Biomechanical Variables and TMJ Kinematics Changes in Pregnant Women: A Case-Control Study

Lumbopelvic Biomechanical Variables and TMJ Kinematics Changes in Pregnant Women: A Case-Control Study

The relationship between the pelvis and stomatognathic system:

Various rationales for the relationship between the spine or pelvis and TMJ have been found. These theories include fascial, myological interrelationships, referred pain patterns and facilitating tonic neck reflexes involving inter segmental spinal pathways. A contributing mechanism could be the relationship between how TMJ occlusion, head position and body posture relate to the body's natural neurological visual/vestibular righting mechanism (Blum, 2004).

There is a Correlation between the facial axis together with the lordotic angle and the pelvic inclination, the inner gonial angle and the mandibular plane with the lordotic angle and the pelvic inclination, as well as the facial depth with the pelvic inclination showed a significant correlation (Carsten et al., 2007).

Inclusion Criteria:

• The age of the participants will be ranged from 20 to 40 years. Their body mass index will be ranged from 20 to 25 kg/m2. They will have regular menstrual cycle. They will not receive any hormonal therapy or taking any regular drugs.

Exclusion Criteria:

• Bone disease. Discogenic state with radiculopathy or not. Systemic disease of musculoskeletal system. Any sensory problems. Previous vertebral fractures. Major spinal structural abnormality. Major jaw abnormality. Any jaw orthotics or prosthesis. Missing teeth.