My second Invisalign retainer is nowhere near as tight as my first, is this normal?

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Author:
Language: English
Channel Number: 61989598
Article Number: 1
Date: November 9, 2011, 12:51 am
URL: http://www.braces.org.uk/blog/my-second-invisalign-retainer-is-nowhere-near-as-tight-as-my-first-is-this-normal/
GUID: http://www.braces.org.uk/blog/my-second-invisalign-retainer-is-nowhere-near-as-tight-as-my-first-is-this-normal/