Left-handed people have faces that are shaped differently than their right-handed counterparts.
According to a new study, individuals with a slender lower face are 25 percent more likely to be left handed. In these individuals, slender jaws cause the jaw to be lower, causing them to bite backwards. This leads to a more convex facial profile with an overbite.
This change in facial structure can affect occlusion, which could potentially affect the body’s sense of proprioception and dominance towards various polyarticular chains of muscles.
Conclusions
According to the Postural Restoration Institute (PRI), the positioning of the teeth and various cranial bones can have an effect on one’s right-side dominance. It would be highly interesting to discover whether or not the difference in facial structure observed in this study could be increasing subjects’ likelihood to become left-handed due to effects on the Temporomandibular Cervical Chain (TMCC) described in the PRI courses.
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