A toothpaste has been developed that can rapidly and seamlessly fix little cavities without need for drilling.
Dental paste of synthetic tooth enamel could revolutionise treatment of tiny early lesions, says the study published today in the journal Nature by Dr Kazue Yamagishi, of the FAP Dental Institute, Tokyo.
Tooth decay is normally treated by removal of the affected part, then filling the hole with a resin or metal alloy. This is less than ideal because a lot of healthy tooth must be removed to make the fillings stick.
Dr Yamagishi and colleagues developed a crystalline white paste of modified hydroxyapatite, which is chemically and structurally similar to natural enamel, and used it to repair early damage to a lower premolar tooth.
An electron microscope showed that the natural and artificial enamel became integrated as if they were one substance.