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).