Does someone in your home have a sports season coming up? If you are rounding up equipment, make sure you call Ipswich River Dental at 978-356-4733 for your appointment with our dentist. Dr. Matthew W. Knight creates custom sports mouth guards in Ipswich, Massachusetts, to keep smiles safe. You should wear a mouth guard for any activity that could damage your smile, and you need to replace your mouth guard before It starts to show signs of wear.