Dr. Bryan J. Terhune Jr. and his fellow oral custodians at Terhune Dental shine up people tusks using a custom, at-home teeth-whitening system that erases the dental vandalism perpetrated by coffee, tea, and tobacco. During the first visit, Dr. Terhune will create a model of the patient's mouth, complete with scaled buildings and teeny-tiny trees, which he will later use to produce custom-fitted clear plastic trays. Patients return for a second visit to collect the trays and a special whitening solution and to review complete instructions on how to proceed. The rest of the whitening process occurs over the next few weeks in the comfort of patients' homes, cars, or underground bunkers, where they’ll wear the trays overnight or twice daily for 30 minutes. Dr. Terhune will ensure that Groupon buyers are qualified for teeth whitening before administering the treatment.