Visited this dentist over 20 years ago...Was so happy my job provided dental insurance and I was quick to use it! Big mistake. My year with Dr Almaguer ended with 8 root canals that he said I needed. Problems started 4 years later with one of the root canals failing. To add insult to injury the absess of the root canaled tooth was acknowledged and I was given a $35 bill for that service. Never went back. Had an apicoectomy which did not resolve the problem and the tooth (molar) ended up being removed. Over the next 10 years 5 more of his root canals failed, and had 2 more of those teeth (molars) removed. Tomorrow morning I start the first endodontic treatment of 3 more failed root canals (bottom front teeth) which I have ignored till they can't be ignored anymore. That makes so far a total of 6 out of 8 root canals that have failed. My advice, get a second opinion before having any work done.