Comparative Evaluation of Classical Inferior Dental Nerve Block and Gow-Gates Mandibular Nerve Block for Posterior Dentoalveolar Surgery : A prospective study and literature review Manish Dubey1, Iqbal Ali2, Deepak Passi3*, Anil kumar yadav4, Devesh Tiwari5, Gaurav kumar Saha6, Lokesh Chandra7 and Anchal Srivastava8