Novel dental filling material is two times more resistant to breakage than standard fillings, reports a new study. The findings of the study are published in the journal Scientific Reports.
A compound used to make car bumpers strong and protect wood decks could prevent return visits to the dentist's office.
The team also has developed an adhesive that's 30 percent stronger after six months in use than adhesives that are currently used to keep fillings in place. This new adhesive was described in a recent study published in the journal Dental Materials.
"Today's dental restorations typically only last seven to 10 years before they fail," said Carmem Pfeifer, D.D.S., Ph.D., corresponding author of the studies published ináScientific Reportsáand Dental Materials. Pfeifer is an associate professor of restorative dentistry (biomaterials and biomechanics) in the OHSU School of Dentistry.
"They crack under the pressure of chewing, or have gaps form between the filling and the tooth, which allow bacteria to seep in and a new cavity to form," Pfeifer said. "Every time this happens, the tooth under the restorations becomes weaker and weaker, and what starts as a small cavity may end up with root canal damage, a lost tooth or even life-threatening infections.
"Stronger dental materials mean patients won't have to get fillings repaired or replaced nearly as often," she said. "This not only saves them money and hassle but also prevents more serious problems and more extensive treatment."
The adhesive described in the Dental Materials study uses a specific kind of polymer known as (meth)acrylamides that is much more resistant to damage in water, bacteria, and enzymes in the mouth than standard adhesives currently used in dentistry. The composite material described ináScientific Reportsáuses thiourethane, which holds up much better to chewing.