Authorities say a pair of crooked Pennsylvania dental office employees ran an after-hours, word-of-mouth operation where they performed root canals, pulled teeth and installed braces without proper training.



Montgomery County prosecutors say they've identified three patients who received treatment from the impostors, but X-rays indicate there could be dozens more.



A grand jury report alleges 45-year-old dental assistant Cheryl Laing and 24-year-old receptionist Jessica Gullickson used the Bryn Mawr dental practice where they worked to provide low-cost services to uninsured patients.



One patient reported a tooth extraction was a painful 45-minute ordeal and another said the receptionist was left to ``find the root'' during a root canal.



Both women were arraigned Monday on charges including theft and conspiracy. Phone listings for them couldn't be located Tuesday.



