Short Dental Needles

About short needles

A short dental needle is approximately 20 mm long, within a range of 20 to 25 mm, according to a review of the literature on dental needles. The ANSI/ADA standard sets nominal lengths of extra short at 8 to 14 mm, short at 24 mm plus or minus 4 mm, long at 34 mm plus or minus 4 mm and extra-long at 41 mm plus or minus 4 mm. A study of needle dimensions and strength found that thinner and shorter needles are more resistant than longer and thicker ones.

The shorter of the two lengths kept here, approximately 20 mm within a range of 20 to 25 mm. A study found that the more deeply a needle penetrates, the greater the probability of permanent deformation and fracturing.

Sources: Monteiro et al. 2021, Physical, chemical, mechanical, and micromorphological characterization of dental needles (J Dent Anesth Pain Med)