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Effect of Needle Design on Pain From Dental Local Anesthetic Injections
Joanna Saenz McPherson DDS, MS,
 Sara A. Dixon DDS, MS,
 Richard Townsend DMD, MS, and
 Kraig S. Vandewalle DDS, MS
Article Category: Other
Volume/Issue: Volume 62: Issue 1
Online Publication Date: Jan 01, 2015
DOI: 10.2344/0003-3006-62.1.2
Page Range: 2 – 7

Since its inception, the field of dental medicine has had the challenge of trying to create a painless experience for the patient. The fear of pain attributed to anesthetic needle injection has been cited as an obstacle in providing appropriate dental care. 1 – 3 A variety of patient management techniques have been attempted to improve patient comfort during dental anesthetic administration, including but not limited to smaller gauge needle sizes, slow computer-regulated administration, distraction techniques, vibrating devices, and topical

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Figure 2.; Septoject XL Block and the Septoject long needles internal diameter (Axio Zoom V16 Carl Zeiss, Thornwood, NY).
Joanna Saenz McPherson,
 Sara A. Dixon,
 Richard Townsend, and
 Kraig S. Vandewalle
Figure 2.
Figure 2.

Septoject XL Block and the Septoject long needles internal diameter (Axio Zoom V16 Carl Zeiss, Thornwood, NY).

Figure 3.; Septoject XL Infiltration and the Septoject short needles internal diameter (Axio Zoom V16 Carl Zeiss, Thornwood, NY).
Joanna Saenz McPherson,
 Sara A. Dixon,
 Richard Townsend, and
 Kraig S. Vandewalle
Figure 3.
Figure 3.

Septoject XL Infiltration and the Septoject short needles internal diameter (Axio Zoom V16 Carl Zeiss, Thornwood, NY).

Factors Influencing the Discomfort of Intraoral Needle Penetration
J. G. Meechan PhD, FDSRCPS,
 P. C. Howlett BDS, MFDS, and
 B. D. Smith BDS, MFDS
Article Category: Research Article
Volume/Issue: Volume 52: Issue 3
Online Publication Date: Sep 01, 2005
DOI: 10.2344/0003-3006(2005)52[91:FITDOI]2.0.CO;2
Page Range: 91 – 94

. Injections in the palatal mucosa are uncomfortable, and injections in the anterior part of the hard palate are perceived to be more uncomfortable than those more posteriorly. The first part of this investigation was designed to test if the discomfort produced by needle penetration differed in different parts of the hard palate. A number of studies have shown that the gauge of dental needle is irrelevant in relation to injection discomfort. 4 5 Scanning electron microscope images of dental needles after use show that the point blunts even if bone has not been

Figure 5.; Catheter Insertion Through the Needle. Needle is held in place as the flexible indwelling catheter is advanced.
Yuki Kojima,
 Kazuma Asano,
 Takeshi Murouchi, and
 Kazuya Hirabayashi
Figure 5.
Figure 5.

Catheter Insertion Through the Needle.

Needle is held in place as the flexible indwelling catheter is advanced.

Figure 3.; Positioning of Ultrasound Probe and Needle. Ultrasound probe and needle used to perform percutaneous nerve block positioned on a skull model.
Yuki Kojima,
 Kazuma Asano,
 Takeshi Murouchi, and
 Kazuya Hirabayashi
Figure 3.
Figure 3.

Positioning of Ultrasound Probe and Needle.

Ultrasound probe and needle used to perform percutaneous nerve block positioned on a skull model.

Figure 4.; Ultrasound Imaging During Injection. Ultrasound image illustrating the needle and spread of local anesthetic solution. Cor, coronoid; Con, condyle; M, masseter; N, needle; LA, local anesthesia.
Yuki Kojima,
 Kazuma Asano,
 Takeshi Murouchi, and
 Kazuya Hirabayashi
Figure 4.
Figure 4.

Ultrasound Imaging During Injection.

Ultrasound image illustrating the needle and spread of local anesthetic solution. Cor, coronoid; Con, condyle; M, masseter; N, needle; LA, local anesthesia.

Efficacy of Pulpal Anesthesia Using a Needle-less Syringe
Coleman Christensen DDS, MS,
 Stephen C. Arnason DDS, MS,
 Ross Oates DMD,
 Michael Crabtree DDS, MS,
 John W. Kersey Jr DDS, MS, and
 Kraig S. Vandewalle DDS, MS
Article Category: Research Article
Volume/Issue: Volume 67: Issue 4
Online Publication Date: Dec 31, 2020
DOI: 10.2344/anpr-67-02-11
Page Range: 200 – 206

-assisted injection equipment, and even various needleless injection devices have been developed or utilized to reduce pain or fear of dental injections or increase the efficacy of anesthesia. 1 – 6 The Numbee (BioDent, Simi Valley, CA) is a novel device that claims to be “the first and only device to provide atraumatic delivery of local anesthesia without a hypodermic needle.” According to the manufacturer, the Numbee is a small metal cannula ensconced with a silicone-like material that is to be used for intraligamentary injections without penetration of the periodontal

Figure 7; Image of needle insertion, toward the neck of the condyle.
Andrew L. Young,
 Junad Khan,
 Davis C. Thomas, and
 Samuel Y. P. Quek
Figure 7
Figure 7

Image of needle insertion, toward the neck of the condyle.

Figure 2. ; A 27-gauge needle with a rubber endodontic stopper measured at 3 mm.
Joseph L. Packer,
 Barry Krall,
 Ali Makki, and
 Mahmoud Torabinejad
<bold>Figure 2.</bold>
Figure 2.

A 27-gauge needle with a rubber endodontic stopper measured at 3 mm.