Paper Information

Journal:   FRONTIERS IN DENTISTRY (JOURNAL OF DENTISTRY OF TEHRAN UNIVERSITY OF MEDICAL SCIENCES)   JULY 2014 , Volume 11 , Number 4; Page(s) 433 To 439.
 
Paper: 

APICAL EXTRUSION OF IRRIGANTS IN IMMATURE PERMANENT TEETH BY USING ENDOVAC AND NEEDLE IRRIGATION: AN IN VITRO STUDY

 
 
Author(s):  VELMURUGAN N.*, SOORIAPRAKAS C., JAIN PREETHAM
 
* DEPARTMENT OF CONSERVATIVE DENTISTRY AND ENDODONTICS, MEENAKSHI AM-MAL DENTAL COLLEGE AND HOSPITAL, CHENNAI, INDIA
 
Abstract: 

Objective: Immature teeth have a large apical opening and thin divergent or parallel dentinal walls; hence, with conventional needle irrigation there is a very high possibility of extrusion. This study was done to compare the apical extrusion of NaOCl in an immature root delivered using EndoVac and needle irrigation.
Materials and Methods: Eighty freshly extracted maxillary central incisors were decoronated followed by access cavity preparation. Modified organotypic protocol was performed to create an open apex; then, the samples were divided into four groups (n=20): EndoVac Microcannula (group I), EndoVac Macrocannula (group II), NaviTip irrigation needle (group III) and Max-i-Probe Irrigating needle (group IV); 9.0 ml of 3% sodium hypochlorite was delivered slowly over a period of 60 seconds. Extruded irrigants were collected in a vial and analysed statistically.
Results: Group I, group III and group IV showed 100% extrusion (20/20) but group II showed only 40% extrusion (8/20). The difference in this respect between group II and other groups was statistically significant (P<0.001). With regards to the volume of extrusion, group II had only 0.23 ml of extruded irrigant. Group I extruded 7.53ml of the irrigant. Group III and group IV extruded the entire volume of irrigant delivered.
Conclusion: EndoVac Macrocannula resulted in the least extrusion of irrigant in immature teeth when compared to EndoVac Microcannula and conventional needle irrigation.

 
Keyword(s): OPEN APEX, EXTRUSION, IRRIGATION
 
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