I went to Dr. Bhattacharyya in December 2014 for a root canal for tooth number 14. Two years later, December 2016, I am having that tooth extracted by another doctor. So what happened in between? Six months after that root canal, the crown came off. I do not live in the same city, so the next time I visited Kolkata, I went to him to get the crown fixed. He told me that the batch of glue he used was bad, which made sense because another family member who had visited him also had their crown come off. Dr. Bhattacharyya got me a new crown in 2015. more..