Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Flexural strength results of six materials pre and post toothbrushing. A significant difference in flexural strength between materials is indicated by different upper-case letters, and a significant difference in flexural strength between pre and post artificial toothbrushing is indicated by different lower-case letters (p < 0.05).
