Inclusion Criteria:  American Society of Anesthesiologists (ASA) class I, aged between 18 and 65, both male and female, who required bilateral local anesthetic injections in the premolar teeth in the upper jaw. Participants are in good general health, take no medications, and have no contraindications to the use of local anesthetic. The ability to understand oral and written instructions, and the ability to use the VR controller.  Exclusion Criteria:  Patients who need intravenous sedation cannot participate in the study. If a patient requires only single visit/ treatment or if he/she cannot attend the other visit.