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Doppler ultrasound to detect pulpal blood flow changes during local anaesthesia

Authors
 M. J. Yoon  ;  S. J. Lee  ;  E. Kim  ;  S. H. Park 
Citation
 INTERNATIONAL ENDODONTIC JOURNAL, Vol.45(1) : 83-87, 2012 
Journal Title
INTERNATIONAL ENDODONTIC JOURNAL
ISSN
 0143-2885 
Issue Date
2012
MeSH
Adult ; Anesthesia, Dental* ; Anesthesia, Local* ; Anesthetics, Local/administration & dosage ; Arterioles/diagnostic imaging ; Dental Pulp/blood supply* ; Epinephrine/administration & dosage ; Female ; Follow-Up Studies ; Humans ; Incisor/blood supply ; Incisor/diagnostic imaging ; Injections ; Lidocaine/administration & dosage ; Male ; Regional Blood Flow/physiology ; Time Factors ; Tooth Cervix/blood supply ; Tooth Cervix/diagnostic imaging ; Ultrasonography, Doppler/methods* ; Vasoconstrictor Agents/administration & dosage ; Venules/diagnostic imaging
Keywords
Doppler ultrasound ; infiltration anaesthesia ; pulp vitality ; pulpal blood flow
Abstract
AIM:   To examine whether Doppler ultrasound can detect changes in pulpal blood flow after infiltration anaesthesia.

METHODOLOGY:   Changes in pulpal blood flow in maxillary central incisor teeth of 18 patients (mean age 26.7 years, 13 men, five women) after infiltration anaesthesia were examined. Before infiltration anaesthesia, the pulpal blood flow was measured using Doppler ultrasound. A local anaesthetic solution containing 2% lidocaine with 1:80,000 epinephrine was injected into the submucosa above the experimental tooth. The Doppler ultrasound test was carried out at 5, 10, 20, 30, 45 and 60 min after infiltration. The parameters were Vas (maximum linear velocity, cm s(-1) ), Vam (average linear velocity, cm s(-1) ) and Vakd (minimum linear velocity, cm s(-1) ), which are indicators of the level of blood flow. The mixed procedure at the 95% confidence interval was used to examine the changes in pulpal blood flow after the injection.

RESULTS:   The linear velocity profiles (Vas, Vam, and Vakd) decreased sharply 5 min after anaesthesia and then reduced continuously for 30 min. The maximum degree of blood flow reduction in Vas, Vam and Vakd was 58%, 83% and 82%, respectively. After 30 min, the linear velocities increased gradually. The Vam returned to the pre-anaesthesia state at 60 minutes but the Vas and Vakd did not recover completely.

CONCLUSIONS:   Doppler ultrasound can detect changes in pulpal blood flow after infiltration anaesthesia. In the future, Doppler ultrasound can be used as a tool for measuring pulpal blood flow.
Full Text
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2591.2011.01960.x/abstract
DOI
10.1111/j.1365-2591.2011.01960.x
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Conservative Dentistry (보존과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Eui Seong(김의성) ORCID logo https://orcid.org/0000-0003-2126-4761
Park, Sung Ho(박성호) ORCID logo https://orcid.org/0000-0003-2171-235X
Yoon, Min Jung(윤민정)
Lee, Seung Jong(이승종)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/90426
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