Efficacy of Pulpal Anesthesia and Patient Preference Using the Needle-less and Conventional Injection Techniques

Pain despite being a physiological experience, is considerably affected by the emotional states, such as anxiety and fear. It was demonstrated that individuals with a high level of anxiety experience difficult anesthesia and more painful procedures during different dental treatments. Besides, the level of anxiety was established as one of the most crucial predictors of dental anesthesia level.Techniques and equipment such as topical anesthetic, cold spray, applying pressure, vibratory devices, distraction techniques, sedation medications, have been developed and utilized to reduce pain or fear of dental injections or increase the efficacy of anesthesia. However it is the sight and sensation of a needle that was found by almost 25% of patients to be extremely anxiety provoking stimuli in a survey to determine what dental patients truly fear.Therefore, Needleless devices that were developed to provide anesthesia without injections would reduce patients' apprehension and anxiety levels resulting in a profound anesthesia for a proper duration of time

Inclusion Criteria:Age range 18-50Males and femalesHealthy patients whom are categorized as I or II according to The American Society of Anesthesiologists. (ASA I or II)Patients accepting to participate in the trialPatients who can understand pain scale and can sign the informed consentMature maxillary molars with symptomatic irreversible pulpitisExclusion Criteria:Medically compromised patients having significant systemic disorders (ASA III or IV).Pregnant femalesTeeth with necrotic pulpsNon-restorable or periodontally hopeless teethPatients on analgesic or anti-inflammatory drugs 12 hours prior to treatmentPatients allergic to any of the components of the anesthetic solution