An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Tan PL, Aquilino SA, Gratton DG, Stanford CM, Tan SC, Johnson WT, Dawson D.Tan PL, et al.J Prosthet Dent. 2005 Apr;93(4):331-6. doi: 10.1016/j.prosdent.2005.01.013.J Prosthet Dent. 2005.PMID: 15798683Clinical Trial.