Needle Free Injection for Local Anaesthesia

INTERVENTION: Intervention1: Needleless Injector: local anaesthetic solution, articaine will be injected using needleless jet injector system Control Intervention1: Standard Syringe: local anaesthetic solution, articaine will be injected using conentional needle CONDITION: Health Condition 1: K029‐ Dental caries, unspecified PRIMARY OUTCOME: To evaluate and compare pain perception during administration of local anaesthesia among ; needle‐less system and conventional needle nasopalatine nerve block.Timepoint: T0 SECONDARY OUTCOME: To evaluate & compare the depth of anaesthesia achieved by the two techniques using an ; Electric Pulp Tester.Timepoint: Immediately after Injection INCLUSION CRITERIA: 1. Patients aged 18 years and above. 2. Patients undergoing extraction of maxillary anterior teeth. 3. Patients willing to give written informed consent.