Efficacy of virtual reality and anaglyph 3D glasses on children's behavior

66 Eligible Children aged 4-9 years will be randomly enrolled into three groups: Group A: Using virtual reality (VR) eyeglasses as a distraction aid Group B: Using anaglyph 3D glasses as a distraction aid Group C: Control group (No distraction aid will be provided) Children will be informed of the group assignment after randomization to minimize patient expectations and/or disappointment. Children and parents will remain in private unit before being transferred into the dental clinic. Parents will be given a written and verbal description of what to expect when they enter the clinic. All Cartoons will be rated ‘E’ for ‘everyone’ and will be self-selected by children from a variety of 10 Cartoon shows. Parents and patient will be escorted into the clinic where standard pre-anesthesia procedures will be carried out prior to inferior alveolar nerve block (IANB) in all three groups. Then, Pulse-oximeter will be placed on children's index before the induction of dental anesthesia and the reading will be recorded. Before the administration of anesthesia, children in group A and group B will be given VR eyeglasses and anaglyph 3D glasses to wear respectively while children in group C will act as a control group. After that, 1.7ml of 2% lidocaine with epinephrine 1:100000 will be administered as an inferior alveolar nerve block by pediatric dentistry residents. During anesthesia period, readings of the pulse oximeter will be recorded. Houpt and FLACC scale will be scored by an external investigator. Children who received IANB will be asked to evaluate their experience using Wong-Baker faces pain scale. The maximum possible duration of the intervention will be at least 5 minutes up to 15 minutes. A research investigator will monitor VR eyeglasses and anaglyph glasses adherence until the cartoon show is over then both devices will be taken off.