Britney Spears' parenting skills have once again after come under fire after it emerged she allegedly tried to have her son's teeth cosmetically whitened. The troubled pop star's mothering skills have previously been subjected to scrutiny after she was filmed nearly dropping baby Sean Preston on a concrete floor and driving with the 22-month-old on her lap. But now the singer has been accused of asking a Los Angeles dentist to cosmetically whiten her son's teeth - only to be refused on health grounds. A source tells Usmagazine.com, "He's having dental problems because Britney just shoves a bottle of juice in his mouth all the time to stop him from crying." "She fed Sean ice cream before bed because the cold would make him sleepy." Spears entered rehab in February 2007 but stayed for only twenty four hours. The following evening she entered a hairdressers and shaved off all her hair. During her string of strange behaviour she also turned up at ex husband Kevin Federline's house to see her children but was refused entry to the property. She vented her fury on a photographer attacking him with an umbrella.She entered Promises Malibu Treatmen Centre late that night.

But her bizzare behaviour has continued when in a recent OK! photoshoot she appeared disoriented making several trips to the toliet and using expensive designer colthes as napkins. She aborted the interview after just two hours.

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