A: A crown over an implant should not be a place to store leftovers.
Possible causes to your problem:
• Open contacts: gaps between the crown and adjacent teeth. Solution: Make a new crown.
• Implant abutment post too narrow. Solution: Change out the abutment post to a larger diameter unit along with a new crown that will fill in the triangular voids (called embrasures).
• The implant itself is too narrow, resulting in a shelf like void around the crown, trapping debris. Solution: Have your doctor take a look and sort things out