PDL Anesthesia Versus Local Infiltration

Aim: The aim of this study was to evaluate the efficacy of and patients' subjective responses to the periodontal ligament (PDL) anesthetic injection as compared to the traditional infiltration injection, for the non-surgical extraction of one posterior maxillary permanent tooth. Methods: All patients scheduled for non-surgical symmetrical maxillary posterior permanent teeth extraction in the Department of Oral and Maxillofacial Surgery (OMFS) at the University of Jordan Hospital, Amman, Jordan, over a-seven-month period, were invited to participate in this prospective randomized double blinded, split mouth study. Every patient received the recommended volumes of 2% lidocaine with 1:100.000 epinephrine for PDL injection on the experimental side, and for local infiltration on the control side. A Visual Analogue Scale (VAS) and a Verbal Rating Scale (VRS) were used to describe the pain felt during injection and extraction, respectively. Statistical significance was based on probability values of <0.05 and measured using Chi-Square and Student-t tests, and Nonparametric Mann-Whitney and Kruskal-Wallis tests.

Inclusion criteria

The inclusion criteria were: patients who were fit for surgery under LA (classified by the American Society of Anaesthesiologists (ASA) as ASA I-ASA III); patients exhibiting full understanding of given oral instructions; and bilateral symmetrical posterior maxillary permanent teeth referred for non-surgical extractions under LA.

Exclusion criteria

Exclusion criteria

were: the presence of acute dento-alveoalr infection; patients requiring conscious sedation or general anesthesia; patients unwilling to participate in the study; patients with ASA greater than III; patients on anti-inflammatory or recreational drugs; and patients requiring more than two additional injections in one or both sides for incomplete anesthesia.