model Eileen Catterson has launched a legal action against toffee bar makers McCowans Ltd, claiming their Irn-Bru bars damaged her teeth.

The court move is almost identical to a case which has also been brought against the same company by her younger sister, Claire.

Both maintain the sweet toffee bars damaged their teeth to the extent they required specialist dental treatment.

Eileen Catterson is suing for #5000 and her sister is claiming #1500 in two separate actions raised at Paisley Sheriff Court.

A date is still to be set for a sheriff to hear evidence in the case involving the fashion model. Claire Catterson's proof hearing will take place on December 13.

Both say they had to seek specialist treatment at Glasgow Dental Hospital after having attended their own dentist.

In papers lodged in the Sheriff Clerk's office outlining arguments from both pursuers and defenders in advance of the court hearing, Eileen Catterson, of Mains River, Erskine, alleges she had to pay for treatment and faces further costly sessions to fix her teeth.

She claims the acidic content of the chewy bars is so high that they are ''unsafe for human consumption''.

McCowans Ltd, of Stenhousemuir, near Falkirk, denies liability and has lodged counter-claims which state that her dental records reveal concerns over wear caused to her teeth from ''excessive brushing''.

They also maintain she has not had any significant treatment since June last year and insist that any damage was caused by her own fault and negligence.

Miss Catterson complains that her teeth suffered ''demineralisation and discolouring'' after chewing the toffee bars which created a ''burning sensation''.

She says that around June, 1996, she ate three of the bars at the centre of the dispute and felt ''severe gum and nerve discomfort'' afterwards.

It is stated that she was so concerned about the detrimental effects, she asked her dentist last year about having composites or veneers fitted.

In the separate action, Claire Catterson, 18, claims the Irn-Bru bars left her teeth and gums damaged and sore.

She maintains she also consumed the toffee in June 1996, resulting in nerve and gum problems as well as acidic damage to tooth enamel.

McCowans has lodged a full defence and is set to contest the action in seven weeks.