Most kids' do not grow up without grand expectations of gifts from tooth fairy when they lose their tooth.
It is common practice among kids to hide the tooth safely in the hope that the tooth fairy would stealthily arrive at night and place a gift for them.
Such fond hopes have turned into bizarre medical emergencies in some cases.
Take the case of an obsessive father, who put his child's tooth through his pierced nipple to keep it close to his heart and in the bargain had to be rushed to the hospital to fight a serious infection.
One more child had to be treated in an emergency after the tooth got stuck in the wind pipe. Another kid had to be operated after the tooth had got into his ear.
Such cases have set some parents thinking if the so-called parent-child play of a tooth-fairy visit is worth at all.
'Previous anecdotal evidence suggests the tooth fairy is benevolent, but this opinion may need revising in light of mounting reports of less child-friendly activity,' the study's authors said.