Document Detail

Needle-less local anesthesia: clinical evaluation of the effectiveness of the jet anesthesia Injex in local anesthesia in dentistry.
MedLine Citation:
PMID:  18197315     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: To clinically evaluate the jet injection Injex (Rösch AG Medizintechnik) using 2 different anesthetic solutions, and to compare the jet injection and the standard needle injection techniques. METHOD AND MATERIALS: Of the 32 patients in the study, 10 received mepivacaine 3% anesthetic solution by means of the jet injection technique, while the remaining 22 patients received lidocaine 2% with epinephrine 1:80,000 by the same method. The 14 patients in whom pulp anesthesia was achieved were selected for an additional evaluation of the pulp reaction using standard needle injection anesthesia. The differences between the 2 compounds with Injex were statistically evaluated by means of independent-samples t test analysis. The differences between subgroups receiving both jet injection and needle injection anesthesia were evaluated by means of paired t test analysis. RESULTS: The administration of mepivacaine 3% using Injex did not achieve pulp anesthesia in any of the 10 patients, although the soft tissue anesthesia was successful. The administration of lidocaine with epinephrine using Injex resulted in pulp anesthesia in only 14 patients; soft tissue anesthesia was observed in all patients of this group. There was no statistically significant difference between Injex and the needle injection technique in onset of anesthesia. However, the duration of anesthesia was significantly longer for the needle infiltration group than for the Injex injection group. CONCLUSION: The anesthetic solution should be combined with a vasoconstriction agent when the Injex technique is implemented.
Nikolaos N Dabarakis; Veis Alexander; Anastasios T Tsirlis; Nikolaos A Parissis; Maroufidis Nikolaos
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Publication Detail:
Type:  Comparative Study; Controlled Clinical Trial; Journal Article    
Journal Detail:
Title:  Quintessence international (Berlin, Germany : 1985)     Volume:  38     ISSN:  1936-7163     ISO Abbreviation:  Quintessence Int     Publication Date:    2007 Nov-Dec
Date Detail:
Created Date:  2008-01-16     Completed Date:  2008-04-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0342677     Medline TA:  Quintessence Int     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  E572-6     Citation Subset:  D    
Department of Oral Surgery, Implantology, and Roentgenology, Dental School, Aristotle University of Thessaloniki, Thessaloniki, Greece.
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MeSH Terms
Anesthesia Recovery Period
Anesthesia, Dental / instrumentation,  methods*
Anesthesia, Local / instrumentation,  methods*
Anesthetics, Local / administration & dosage*
Dental Pulp / drug effects*
Double-Blind Method
Epinephrine / administration & dosage
Injections, Jet
Lidocaine / administration & dosage
Mepivacaine / administration & dosage
Mouth Mucosa / drug effects
Vasoconstrictor Agents / administration & dosage
Reg. No./Substance:
0/Anesthetics, Local; 0/Vasoconstrictor Agents; 137-58-6/Lidocaine; 51-43-4/Epinephrine; 96-88-8/Mepivacaine

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