Back in October 2022, one day during lunch, one of my teeth felt sensitive when I was drinking soup. I also sensed something akin to pre-sensitive discomfort when I physically pressed on it. I consulted Dr Ting and I was told that it was the same troublesome tooth previously . So after the usual checking, she advised me to consult an endodontist. Upon my request, she gave me a list of recommended specialists and narrowed it further to one that was most convenient to me due to location. She then wrote a letter, detailing the history of that tooth, for me to pass it to the endodontist, Dr Bryan Ong. I can't remember the details as it's been more than 4 months. I remember that on top doing the usual checks, Dr Ong also checked by using hot water, X-ray and CT scan. Strangely the tooth didn't feel sensitive to hot water that time. The scans didn't detect hidden canal or infection. Incidentally, he commented that the crown was well done. Also, it appeared that the source of...