Dr Kinsaul is a member of the American Endodontic Society, a small group of disrespected dentists who advocate for, facilitate and use a widely known to be toxic and dangerous root canal filling material known as Sargenti Paste, N2, RC2B, RC2W. this material contains 4-6.5% formaldehyde as its active ingredient and should NOT be used on any living person. FDA rejected approval in 1993 for failure to prove safety. The transcript for that meeting shows that they have no science to back up their claim. They rely on self-serving testimonials by dentists who believe this material can do no harm. Patients are not told that this material is being used on them. Beware. Do your homework before you let this dentist do a root canal on you. read more