title: Comparison of success rate and onset time of two different anesthesia techniques.
abstract: BACKGROUND
  Using local anesthetic is common to control the pain through blocking the nerve reversibly in dental procedures. Gow-Gates (GG) technique has a high success rate but less common. This study aimed to compare the onset time and success rate in GG and standard technique of inferior alveolar nerve block (IANB).
  
  
  METHODS
  This descriptive, single blind study was consisted of 136 patients (59 males and 77 females) who were randomly received GG or IANB for extraction of mandibular molar teeth. Comparisons between the successes of two anesthetic injection techniques were analyzed with Chi-square test. Incidence of pulpal anesthesia and soft tissue anesthesia were analyzed with Kaplan-Meier method. Mean onset times of pulpal anesthesia, soft tissue and lip numbness were analyzed with Log-Rank test. Comparisons were considered significant at P≤0.05 by using SPSS software ver.15.
  
  
  RESULTS
  The incidence of pulpal anesthesia in the IANB group (canine 49.3%, premolar 60.3%) were not significantly different from the GG group (canine 41.3%, premolar 74.6%) (P=0.200 and P=0.723). The success rate in the IANB group (80.82%) was not significantly different from the GG group (92.02%) (P=0.123). Furthermore, onset time of lip and buccal soft tissue numbness in GG group (3.25, 4.96 minutes) was quite similar to IANB group (3.22, 4.89 minutes) (all P values >0.05).
  
  
  CONCLUSIONS
  Although this study demonstrated higher clinical success rate for GG than IANB technique, no significant differences in success rates and onset time were observed between two techniques.
authors: Dentist, Torabinejad Dental Research Center, Isfahan University of Medical Sciences, Isfahan, Iran, z.jafary2101@gmail.com.
authors: Abbas
authors: A
authors: Haghighat
authors: Zahra
authors: Z
authors: Jafari
authors: Dariush
authors: D
authors: Hasheminia
authors: Mohammad-Hasan
authors: MH
authors: Samandari
authors: Vajihe
authors: V
authors: Safarian
authors: Amin
authors: A
authors: Davoudi
mesh_terms: D000293:Adolescent; D000328:Adult; D000766:Anesthesia, Dental / Q000379:methods*; D000772:Anesthesia, Local; D001340:Autonomic Nerve Block; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D016037:Single-Blind Method; D013997:Time Factors; D055815:Young Adult