Drill no pain

No painful dental drill may be present in the dentist's office within two years, according to the Daily Mail.

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The high-tech 'plasma brush' can hollow the broken tooth in just 30 seconds, with only a little cooling in the patient.

This tool uses chemical reactions to decant cavities before they work, and produces a much stronger seal than current techniques.

This means that the sealants will last longer than before, a great encouragement for both the dentist and the patient because many layers of fillings usually last only a few years.

Experts from the University of Missouri, who pioneered the study with Nanova Medical Technologies, believe the device marks a major breakthrough in the field of dentistry.

"Our research shows that the fillers are 60% stronger with the plasma brushes ," said Hao Li, a professor of engineering, a member of the research team.

According to Qingsong Yu researcher, clinical trials are about to be made and are expected to show the use of plasma brushes.

"There are no side effects in laboratory tests, and we hope that human trials will help us improve the initial sample," he said.