Pressures generated in vitro during Stabident intraosseous injections

Abstract

Stabident intraosseous injection conducted in accordance with the manufacturer's instructions does not present a serious risk of dangerous pressure build-up in local anaesthetic cartridges.

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

“…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).…”

“…1981, Maita & Horiuchi 1984, Shepherd et al. 2001), cartridge failure (Whitworth et al. 2005) and needle clogging (Rieu 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).…”

“…In addition, the dental syringe plunger is relatively small in surface area, and this coupled with the strength of a clinician's thumb can develop unanticipated high pressures in the syringe barrel (Pashley et al. 1981, Whitworth et al. 2005).…”

“…This apparent disagreement reflects some confusion regarding the difference between pressure and flow rate. In addition, the dental syringe plunger is relatively small in surface area, and this coupled with the strength of a clinician's thumb can develop unanticipated high pressures in the syringe barrel (Pashley et al 1981, Whitworth et al 2005. Such pressures could in fact lead to barrel failure or to sudden detachment of the needle hub from the syringe (Clarkson & Moule 1998, Lambrianidis 2001.…”