Crackpot dentist Boner Butt from Bury, Greater Manchester forced women patients to convert to Islam, a disciplinary hearing of the General Dental Council heard.
He would poke inside their mouth with a sharp instrument, causing blinding pain, and tell them that if they embraced the new faith, Allah would "take away the pain". Those that refused were left bleeding in the dentist's chair, while Butt played tiddlywinks with his practice assistant.
The General Dental Council heard evidence from several women who had been forced to convert to Islam and change their names. Mrs Dorothy Smith, now Mrs Parveen Begum, said that she had seen Butt, complaining of simple toothache, and he had opened her mouth, poked her teeth with a scalpel and sprayed some anaesthetic inside.
"He told me that the anaesthetic would wear off in a minute and it would begin to hurt like hell. If I renounced Christianity he would give me a full dose. It was just like that scene from the film Marathon Man."
Mrs Begum had reluctantly agreed, under great duress. She added:
"Now that I am Muslim, I have to walk three steps behind my husband, cover my face in public and take part in anti-war rallies. I have been shunned by the other ladies at the Women's Institute. I wish I could go back to being plain old Dorothy Smith."
Butt denies the charge of serious professional misconduct, alleging that the decisions of all his female patients to convert to Islam while they were in his dentist's chair had nothing to do with him. The tribunal is now deliberating and is expected to reach a verdict revoking Butt's licence to practise any minute now.