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Learners & clinicians · Foundations & reference
An archwire doesn't move a tooth directly — it moves the periodontal ligament, and the ligament tells the bone what to do. This chapter follows that chain: from the fibrous tissue holding a tooth in its socket, to the pressure and tension it feels under load, to the cells and molecular signal that turn "squeezed" into "resorbed" and "stretched" into "built."
Learners & clinicians · Foundations & reference
Force systems, centers of resistance, anchorage, wire mechanics, and loop mechanics.
Learners & clinicians · Professional study
M/F Ratio & Force Systems questions for study and self-testing. Coverage is selective; sources are shown with the answers.
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