Peñarrocha-Oltra D, Ata-Ali J, Oltra-Moscardó MJ, Peñarrocha-Diago M, Peñarrocha M. Comparative study between manual injection intraosseous anesthesia and conventional oral anesthesia. Med Oral Patol Oral Cir Bucal. 2012 Mar 1;17 (2):e233-5.
Objective: To compare intraosseous anesthesia (IA) with the conventional oral anesthesia techniques.
Materials and methods: A simple-blind, prospective clinical study was carried out. Each patient underwent two
anesthetic techniques: conventional (local infiltration and locoregional anesthetic block) and intraosseous, for respective dental operations. In order to allow comparison of IA versus conventional anesthesia, the two operations
were similar and affected the same two teeth in opposite quadrants.
Results: A total of 200 oral anesthetic procedures were carried out in 100 patients. The mean patient age was
28.6±9.92 years. Fifty-five vestibular infiltrations and 45 mandibular blocks were performed. All patients were also
subjected to IA. The type of intervention (conservative or endodontic) exerted no significant influence (p=0.58 and
p=0.62, respectively). The latency period was 8.52±2.44 minutes for the conventional techniques and 0.89±0.73
minutes for IA – the difference being statistically significant (p<0.05). Regarding patient anesthesia sensation, the
infiltrative techniques lasted a maximum of one hour, the inferior alveolar nerve blocks lasted between 1-3 hours,
and IA lasted only 2.5 minutes – the differences being statistically significant (p≤0.0000, Φ=0.29). Anesthetic
success was recorded in 89% of the conventional procedures and in 78% of the IA. Most patients preferred IA
Conclusions: The two anesthetic procedures have been compared for latency, duration of anesthetic effect, anesthetic success rate and patient preference. Intraosseous anesthesia has been shown to be a technique to be taken into account when planning conservative and endodontic treatments.