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LONDON, June 16 (Xinhua) -- Drillings and fillings at the dentist's are always dreadful and make tooth decay treatment very unpleasant.
But British scientists have developed a new approach of fixing tooth decay, which could get rid of all the drillings, injections and fillings -- and unpleasantness, a press release by King's College London (KCL) said on Monday.
Dentists normally treat caries in a tooth by drilling to remove the decay and filling the tooth with a material such as amalgam1 or composite resin2. But scientists at King's College London (KCL) took a different approach, one that re-builds the tooth and heals it without the need for drills, needles or amalgam.
British scientists develop drill-free tooth treatment
By accelerating the natural process by which calcium3 and phosphate minerals re-enter the tooth to repair a defect, the device boosts the tooth's natural repair process.
The new method could be in use at the dentist's chair in the next 3 years, according to researchers.
The two-step method first prepares the damaged part of the enamel4 outer layer of the tooth, then uses a tiny electric current to 'push' minerals into the tooth to repair the damaged site. The defect is remineralised in a painless process that requires no drills, no injections and no filling materials.
Electric currents are already used by dentists to check the pulp5 or nerve of a tooth; the new device uses a far smaller current than that currently used on patients and which cannot be felt by the patient.
Professor Nigel Pitts from KCL said: "Not only is our device kinder to the patient and better for their teeth, but it's expected to be at least as cost-effective as current dental treatments. Along with fighting tooth decay, our device can also be used to whiten teeth."
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1 amalgam | |
n.混合物;汞合金 | |
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2 resin | |
n.树脂,松香,树脂制品;vt.涂树脂 | |
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3 calcium | |
n.钙(化学符号Ca) | |
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4 enamel | |
n.珐琅,搪瓷,瓷釉;(牙齿的)珐琅质 | |
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5 pulp | |
n.果肉,纸浆;v.化成纸浆,除去...果肉,制成纸浆 | |
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