The question concerning the importance of occlusion and if there ist really a connection betwee occlusion and functional disturbances of the masticatory organ has been discussed for decades.
When the masticatory organ is accepted as a very important functional part of the whole human organism, occlusion becomes very significant. The masticatory organ is defined not only by static occlusion but by the dynamic functions in the whole context of the surrounding structures.
The modern human being has undergone many changes. People live longer and nutrition has changed and so the chewing function is no longer the primary function of the masticatory organ. Functions like articulation, esthetics of the face, posture and stress induced functions like bruxism have increased in importance.