Each time I waited between 30 to 40 minutes after time for appointment to actually get into a chair. While I was there I waited, while he would give me a shot and then wait some more. He was treating another patient as the same time as me so he would go back and forth. When he finally did come to put the crown in, the crown seemed to fit well. But after the novacaine wore off, the tooth was still sensitive to hot and cold. While Dr. Cheung was pleasant, I don't think he really listened to my complains. He just couldn't get it right. Anyway I switched to another dentist.
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