Tooth loss is a widespread problem in adults and results in poor quality of life. Currently, solutions to this problem include artificial teeth and implants. But these aren’t as good as “real teeth,” and they don’t markedly improve quality of life. Now, scientists from Japan have made a discovery that can make re-growing teeth possible. They found, with animal studies, that suppressing the gene USAG-1 by using its antibody can efficiently lead to tooth growth.