What make teeth move orthodontically?

Oral PresentationThe first experimental investigation of orthodontic tooth movement was published by Sandstedt in 1904-1905. After 100 years, there is a good understanding of the sequence of events at both tissue and cellular levels. But still the orthodontic literature is characterized by many controversies in relation to tooth movement, thus the current focus of research is at the molecular level. What makes tooth move orthodontically? Why is bone resorption involved in orthodontic tooth movement shown to be self-limited?link_to_OA_fulltextThe 7th International Orthodontic Congress, Sydney, Australia, 6-9 February 2010