Dr. Kasirir does the best work if you want crowns done right. I have been to other dentists whos crowns fell out after one to 2 years. With Dr. Kasiri his crowns stay in for 15 to 20 years or more. If I had known about Kasiri from the start I would have saved over $25,000 easy. My other crowns had to be redone and redone again and again by dentists who said that they were done wrong but redid tham incorrectly.