This patient presented in October of 2010 for a check up and cleaning.  The patient does not brush on a regular basis.  There are medium sized cavities on many of his teeth.  Below is an xray of the cavities.  The cavities are the darker shadows outlines in red.

The patient wanted to wait until the summer to have fillings done.  He got busy and we did not see him until May of 2012.  Below is the xray of the same teeth.  Notice that the dark shadows have gotten bigger. The tooth of the top aches on its own.  It Needs to be root canaled.