Dr Evans said one of the attractions of the Hall technique is that it involves no injections, caries removal or tooth preparation of any kind and, therefore, involves a minimum of pain and intrusion.

BBC: Children could be spared dentists' drill

Left untreated, what's termed "early dental caries" -- the first stage of tooth decay -- can destroy tiny teeth and lead to infection, pain, and lifelong consequences.

CNN: Baby's teeth: What you should know