Inclusion Criteria:  Scheduled to undergo a root canal or dental implant procedure at Cambridge Health Alliance Able to hear, write and read in English, as the ComfortTalk® scripts, study scales and take-home diary are in English Able to operate a standard smart tablet Willing and able to give informed consent  Exclusion Criteria:  Known acute psychiatric disorder, such as multiple personalities which will be assessed on the medical history form Implanted cardiac medical device Not meeting inclusion criteria