Oral Surg Oral Med O
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Oral Surg Oral Med O · Nov 1999
Comparative study of different syringes in positive aspiration during inferior alveolar nerve block.
The purpose of this study was to evaluate the detection of intravascular injection or hematic aspiration in relation to (a) the particular combination of syringe system and needle (there being 3 different syringe systems [2 self-aspirating and 1 non-self-aspirating] and 3 different needles); (b) the anesthetic technique used (direct or indirect) to induce inferior alveolar nerve block; (c) patient sex; and (d) the operator performing the block. ⋯ The Uniject K non-self-aspirating syringe system was associated with a higher number of hematic aspirations than the self-aspirating systems (Inibsaject and Aspiject). However, the detection of hematic aspirations was not dependent on length or gauge of the needles used, anesthetic technique performed (direct or indirect), patient's sex, or operator who performed the block.