Hook
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Invisalign works by applying gentle, controlled pressure, but not all at once. Each set of clear aligners is custom fitted to your teeth's current position, made slightly out of alignment with where they actually sit. That mismatch creates constant, low level force, and your periodontal ligament responds by triggering bone remodeling: osteoclasts break down bone on the side each tooth is moving toward, while osteoblasts build new bone on the side it's moving away from. Every one to two weeks, you switch to the next aligner in the series, which nudges teeth slightly further. Over months, that steady sequence of small, precise shifts gradually guides teeth into their final position, without a single metal bracket involved.