Measurements of pressures developed in the syringe during dental infiltration anaesthesia

Measurement of pressure and flow rates during irrigation of a root canal ex vivo with three endodontic needles

“…It has been previously reported that differences between sexes exist in the pressure applied during dental anaesthesia (Maita & Horiuchi 1984, Whitworth et al 2005. Although the present study was not designed to test a similar hypothesis during irrigation, significant differences between sexes for most recorded variables were detected in all groups, except for average and maximum pressure in groups B and C. In general, female operators tended to deliver greater amounts of irrigant under lower pressure, for a longer time, resulting in lower flow rates.…”

“…The purpose of this study was to monitor irrigations ex vivo with three commonly used endodontic needles and to detect differences in irrigant flow rate, intra-barrel pressure developed, duration of irrigation and volume of irrigant delivered among tested needles. Similar studies have been conducted in the field of neurosurgery to facilitate the design of improved injection equipment (Krebs et al 2005) and in dental anaesthesia, to evaluate the risk of local tissue damage (Pashley et al 1981, Maita & Horiuchi 1984, Shepherd et al 2001, cartridge failure (Whitworth et al 2005) and needle clogging (Rieu et al 1989). Pressure developed during periodontal pocket irrigation has also been studied (Kelly et al 1985).…”

“…2005) and in dental anaesthesia, to evaluate the risk of local tissue damage (Pashley et al. 1981, Maita & Horiuchi 1984, Shepherd et al. 2001), cartridge failure (Whitworth et al.…”

“…It has been previously reported that differences between sexes exist in the pressure applied during dental anaesthesia (Maita & Horiuchi 1984, Whitworth et al. 2005).…”

Pressures generated in vitro during Stabident intraosseous injections

“…Our experimental system was based on the modified Astra syringe model of Maita & Horuichi (1984) (Fig. 1).…”