Document Detail


Comparative study of two needle models in terms of deflection during inferior alveolar nerve block.
MedLine Citation:
PMID:  19718006     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVES: The purpose of this study is to determine the possible differences in deflection between two needles of same length and external gauge but with different internal gauges during truncal block of the inferior alveolar nerve. The initial working hypothesis was that greater deflection may be expected with larger internal gauge needles. STUDY DESIGN: Four clinicians subjected 346 patients to inferior alveolar nerve block and infiltrating anesthesia of the buccal nerve trajectory for the surgical or conventional extraction of the lower third molar. A nonautoaspirating syringe system with 2 types of needle was used: a standard 27-gauge x 35-mm needle with an internal gauge of 0.215 mm or an XL Monoprotect 27-gauge x 35-mm needle with an internal gauge of 0.265 mm. The following information was systematically recorded for each patient: needle type, gender, anesthetic technique (direct or indirect truncal block) and the number of bone contacts during the procedure, the patient-extraction side, the practitioner performing the technique, and blood aspiration (either positive or negative). RESULTS: 346 needles were used in total. 190 were standard needles (27-gauge x 35-mm needle with an internal gauge of 0.215 mm) and 156 were XL Monoprotect. Incidence of deflection was observed in 49.1% of cases (170 needles) where 94 were standard needles and 76 XL Monoprotect. Needle torsion ranged from 0 degrees and 6 degrees. CONCLUSIONS: No significant differences were recorded in terms of deflection and internal gauge, operator, patient-extraction side, the anesthetic technique involved and the number of bone contacts during the procedure.
Authors:
Esther Delgado-Molina; Meritxell Tamarit-Borras; Leonardo Berini-Aytés; Cosme Gay-Escoda
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2009-09-01
Journal Detail:
Title:  Medicina oral, patología oral y cirugía bucal     Volume:  14     ISSN:  1698-6946     ISO Abbreviation:  Med Oral Patol Oral Cir Bucal     Publication Date:  2009 Sep 
Date Detail:
Created Date:  2009-08-31     Completed Date:  2009-11-30     Revised Date:  2009-12-11    
Medline Journal Info:
Nlm Unique ID:  101231694     Medline TA:  Med Oral Patol Oral Cir Bucal     Country:  Spain    
Other Details:
Languages:  eng     Pagination:  e440-4     Citation Subset:  D; IM    
Affiliation:
School of Dentistry of the University of Barcelona, Spain.
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MeSH Terms
Descriptor/Qualifier:
Equipment Design
Female
Humans
Male
Mandibular Nerve*
Needles*
Nerve Block / instrumentation*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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