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Anesth Prog. 1985 Mar-Apr; 32(2): 62–64.
PMCID: PMC2148514

Deflection of Conventional Versus Non-Deflecting Dental Needles In Vitro


Deflection of conventional and newly introduced nondeflecting dental local anesthetic needles were compared in vitro by radiographic examination of the course of the needles in a hydrocolloid impression material. Results indicated significantly less deflection of the new needles when compared to a variety of conventional needles. Controlled clinical trials will be required to test the significance of this finding.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Aldous JA. Needle deflection: a factor in the administration of local anesthetics. J Am Dent Assoc. 1968 Sep;77(3):602–604. [PubMed]
  • Lehtinen R. Penetration of 27- and 30-gauge dental needles. Int J Oral Surg. 1983 Dec;12(6):444–445. [PubMed]
  • McCarthy FM. Prevention and treatment of selected complications with local anesthesia alone--and with the adjuvants. Anesth Prog. 1979 Mar-Apr;26(2):37–42. [PMC free article] [PubMed]

Articles from Anesthesia Progress are provided here courtesy of American Dental Society of Anesthesiology


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