Preoperative Acetaminophen- Caffeine- Codeine Combination and Anaesthetic Success in Patients With Acute Pulpitis

After ensuring eligibility, patients will be given premedication 1hr before treatment,which will be done in single visit. After 1 hour, Pretreatment pain "pain after administration of analgesic or placebo" will be recorded using 0-10 numerical rating scale (NRS) . Local anesthesia will, then, be done through inferior alveolar nerve block using 1.8 ml Mepivacaine. The teeth will be isolated using rubber dam and access cavity will be prepared using #2 high-speed round bur. The patients will be asked to rate their pain on the NRS. The degree of pain during access preparation and/or instrumentation will be recorded. Success will be defined as no pain or mild pain during endodontic access preparation and/or instrumentation. Any pain more than no pain or mild pain will considered a failure. The patients will be instructed to return after 2 days to complete the treatment procedures.