I am conducting a "Deep Carious Study" at Tufts University School of Dental Medicine, Boston - (a dental condition with cavities that are very close to the pulp (nerve) that might need a root canal treatment.) If the tooth is still vital (alive) with electrical and thermal stimuli testing, and  radiographic evidence of deep caries, we will do a conventional restorative work. There is NO experimental material involved (as some of you are cynical of clinical trials).  So if you are willing to schedule an appointment for screening which involves taking four bitewing X-rays and dental exam and see if you qualify for the study, call: 617 636 3932 or 617 636 3931 Screening and X-rays are free. You will be compensated for future visits which consist of short interview and exam. Mabi Singh DMD MS Associate Professor