• Restorative Dentistry and Endodontics
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• v.44 no.4
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• pp.40.1-40.10
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• 2019

Objectives: This study aimed to assess the effect of DentalVibe on the level of pain experienced during anesthetic injections using 2 different techniques. Materials and Methods: This randomized crossover clinical trial evaluated 60 patients who required 2-session endodontic treatment. Labial infiltration (LI) anesthesia was administered in the anterior maxilla of 30 patients, while inferior alveolar nerve block (IANB) was performed in the remaining 30 patients. 1.8 mL of 2% lidocaine was injected at a rate of 1 mL/min using a 27-gauge needle. DentalVibe was randomly assigned to either the first or second injection session. A visual analog scale was used to determine participants' pain level during needle insertion and the anesthetic injection. The paired t-test was applied to assess the efficacy of DentalVibe for pain reduction. Results: In LI anesthesia, the pain level was 12.0 ± 15.5 and 38.1 ± 21.0 during needle insertion and 19.1 ± 16.1 and 48.9 ± 24.6 during the anesthetic injection using DentalVibe and the conventional method, respectively. In IANB, the pain level was 14.1 ± 15.9 and 35.1 ± 20.8 during needle insertion and 17.3 ± 14.2 and 39.5 ± 20.8 during the anesthetic injection using DentalVibe and the conventional method, respectively. DentalVibe significantly decreased the level of pain experienced during needle insertion and the anesthetic injection in anterior LI and mandibular IANB anesthesia. Conclusions: The results suggest that DentalVibe can be used to reduce the level of pain experienced by adult patients during needle insertion and anesthetic injection.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2012.05a
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• pp.761-762
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• 2012

• Journal of Acupuncture Research
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• v.35 no.4
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• pp.238-243
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• 2018

Background: Various factors can alter the efficacy of acupuncture treatment, such as the location of points, manipulations, depth of insertion, needle retention time, and needle type. In this study, the effect of needle diameter on the efficacy of acupuncture treatment was quantitatively evaluated. Methods: Five acupuncture needles of different diameters used in clinical practice were compared. Force on the porcine tissue phantom was measured using a sensor. Lifting-thrusting and twisting-rotating movements were performed using a needle insertion-measurement system. After repeated measurements, force magnitude was calculated and compared. Following this, we correlated needle diameter and force magnitude during lifting-thrusting and twisting-rotating movements. Results: The force magnitude was significantly altered between needle diameters during lifting-thrusting movements, as shown by a significant positive correlation between needle diameter and force magnitude. In contrast, there was no difference in force magnitude with different needle diameters during twisting-rotating movements. Conclusion: Needle diameter can significantly affect stimuli and force magnitude dependent upon the type of manipulation. Research into the effect of other needle type characteristics and stimulation method is necessary to fully elucidate the role of acupuncture needle choice in treatment efficacy.

• Journal of the korean academy of Pediatric Dentistry
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• v.47 no.2
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• pp.99-108
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• 2020

This study was performed to evaluate the effectiveness of the 2-step needle insertion technique to reduce pain during local anesthesia in children. Local anesthesia was performed bilaterally using conventional technique and a 2-step technique, and to compare the degree of pain using the 2-step with that using the conventional technique during local anesthesia using a pain scale. The pain scores were significantly different between the conventional technique and the 2-step insertion technique at 5.82 ± 2.14 and 2.57 ± 2.09, respectively (p < 0.001). The subjective degree of pain based on gender, age, and Frankl's behavior rating scale was significantly lower in the 2-step insertion technique (p < 0.001). Subjective pain levels in the area of maxilla and mandible, anterior and posterior parts were lower in the group treated using the 2-step insertion technique (p < 0.001). The 2-step insertion technique is a simple and effective way to reduce pain during local anesthesia not only in children with a positive attitude to dental treatment, but also in children with negative attitudes, and is thought to be more effective if combined with application of topical anesthesia or distraction.

• Restorative Dentistry and Endodontics
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• v.47 no.3
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• pp.25.1-25.11
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• 2022

Objectives: This study aimed to evaluate the effects of 5% lidocaine and 2.5% lidocaine/2.5% prilocaine topical anesthetic on pain during needle insertion and infiltration injection in the labial mucosa of anterior maxillary teeth, and to assess the relationship between patients' anxiety and pain scores. Materials and Methods: The Modified Dental Anxiety Scale questionnaire was applied and recorded. Patients were randomly divided into 4 groups (n = 30), as follows: G1 group: 5% lidocaine and placebo for 1 minute, G2 group: 2.5% lidocaine/2.5% prilocaine and placebo for 1 minute, G3 group: 5% lidocaine and placebo for 3 minutes, and G4 group: 2.5% lidocaine/2.5% prilocaine and placebo for 3 minutes. Before the application of topical anesthesia, one side was randomly selected as the topical anesthesia and the contralateral side as the placebo. The pain levels were measured with Visual Analog Scale (VAS) immediately after needle insertion and injection and were compared. The correlation between anxiety and pain scores was analyzed. Results: Administration of 5% lidocaine for 1 minute had significantly higher pain scores for both insertion and infiltration injection than the other groups (p < 0.05). There was a significant moderate positive correlation between dental anxiety and the injection-induced VAS pain score in the placebo side in all groups (p < 0.05). Conclusions: Topical anesthetics significantly reduced the pain caused by both needle insertion and injection pain in comparison to the placebo side. The pain scores of patients with dental anxiety were lower on the topical anesthesia compared to the placebo side.

• Annals of Clinical Neurophysiology
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• v.8 no.1
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• pp.88-90
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• 2006

Pneumothorax after needle electromyography is a rare complication, which usually associated with examination of diaphragmatic and intercostal muscles. However, by the literatures, it can also occur with supraspinatus, serratus anterior and paraspinal muscles. We experienced a case of pneumothorax after cervical paraspinal muscle needle electromyography. From the anatomical vulnerability of pneumothorax during needle insertion, we emphasized the importance of avoiding this complication.

• The Korean Journal of Pain
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• v.10 no.2
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• pp.225-230
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• 1997

Background: Authors modified the traditional continuous axillary brachial plexus block technique of Selander for purpose of increasing success rate and decreasing complications by use of commercial epidural anesthesia set. Method: Thirty-nine patients scheduled for upper extremity operations were injected with 40 ml of anesthetic solution by axillary perivascular technique, using 23~25G immobile needle at 2 cm from the pectoralis major. Tuohy needle was immediately introduced at 4 cm from the pectoralis major and pierced the expanded neurovascular sheath at an angle of 30 degree to the skin. The "pop" was well noted well. Needle was advanced 0.5 to 3.0 cm and epidural catheter introduced through the needle. After removal of needle, occlusive dressing was done. Tip of catheter and spread of solution were demonstrated by fluoroscopy with contrast dye after completion of procedure. Result: Catheter insertion was successful at first attempt for all case. Total length of insertion was from 6 to 13($10.0{\pm}1.7$) cm. Tip of catheter was placed in infraclavicular space(66.7%), about the humeral head(17.9%) and in upper arm in 3 cases as U-shape(7.9%). Catheters were maintained for $6.7{\pm}2.6$(3-12) days. There were no complications such as: perforation of major vessels, needle trauma to nerve, infection, bleeding or hematoma. Conclusion: This study demonstrated continuous axillary brachial plexus block with epidural anesthesia set is safe, easy and convenient modification of technique of Selander.

• Journal of Korean Medicine Rehabilitation
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• v.21 no.4
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• pp.67-76
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• 2011

Objectives: The aim of this review was to investigate studies on fire needle and to propose for the better method of studies in the future. Methods: Studies related to fire needle were searched with electric database for this study, and 10 domestic and overseas databases were included. Results: 19 clinical studies were analyzed in terms of condition, time of heating, number and frequency of treatment, number of heating, safety procedure or device aid reports of adverse events. Also 3 review studies were summarized. The number of studies was increasing and the kind of diseases to treat with fire noodle were various. Especially musculoskeletal diseases like ligament lesion and lumbago were noticeable. Heating-after-insertion method was recently proposed but the use of term was confusing. The report of adverse events or safety procedure was rare. Also there was an effort to develop more convenient and safer device. Conclusions: High quality clinical trial en fire needle is needed especially to compare 2 methods, heating-after-insertion and heating-before-insertion. And studies need to report safety procedures and adverse events to evaluate the safety of fire needle therapy.

• Korean Journal of Oriental Medicine
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• v.1 no.1
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• pp.159-178
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• 1995

After acupuncture needles were inserted on apkok(LI4) and Kokchi(LI11) accupoints, physiological changes induced by the varitions of 'Qi' were measured. The body temperature and pulse frequency were fromed to be decreased observed and we presumed that the needle insertion induced some changes of Qi in meridian and this seemed to be achieved by a certain process of Qi induction. We applied EAV, nervinemeter and pulse-taking machine which is widely used as oriental medicine instruments, to the same vounteers and observed the significant variations for each apparatus in spite of partial lack of reproducibility. In this paper, we described about the physical quantity measured by the medical appartatus and how it was related to the variation of Qi The proper conditions used for good oriental medicine instruments have also been suggested.

• Journal of Institute of Control, Robotics and Systems
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• v.22 no.8
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• pp.603-609
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• 2016

This paper presents an optimally designed master device mechanism for teleoperated interventional robotic system. The interventional procedures using the teleoperated robotic system and the physicians' requirements are summarized. The master device should implement 5-DOF motion including 2-DOF translational motion for the entry position control, 2-DOF rotational motion for the orientation control, and 1- DOF translational motion for needle insertion. The handle assembly includes a 1-DOF translational mechanism for needle insertion and buttons for operation mode selection. The mechanisms for the 2-DOF translational motion and the 2-DOF rotational motion are designed using motors and brakes based on the various mechanisms to satisfy all the above requirements, respectively. Absolute position sensors are adopted to implement automatic initial positioning and orientation matching at the first step of needle insertion.