Retreatability of two endodontic sealers, EndoSequence BC Sealer and AH Plus: a micro-computed tomographic comparison
Oltra Enrique, Cox Timothy C., LaCourse Matthew R., Johnson James D., Paranjpe Avina,
소속 상세정보
( Oltra Enrique ) - University of Washington Department of Endodontics
( Cox Timothy C. ) - University of Washington Department of Pediatrics
( LaCourse Matthew R. ) - Seattle Childrens Research Institute Center for Developmental Biology and Regenerative Medicine
( Johnson James D. ) - University of Washington Department of Endodontics
( Paranjpe Avina ) - University of Washington Department of Endodontics
KMID : 1034420170420010019
Abstract
Objectives: Recently, bioceramic sealers like EndoSequence BC Sealer (BC Sealer) have been introduced and are being used in endodontic practice. However, this sealer has limited research related to its retreatability. Hence, the aim of this study was to evaluate the retreatability of two sealers, BC Sealer as compared with AH Plus using micro-computed tomographic (micro-CT) analysis.
Materials and Methods: Fifty-six extracted human maxillary incisors were instrumented and randomly divided into 4 groups of 14 teeth: 1A, gutta-percha, AH Plus retreated with chloroform; 1B, gutta-percha, AH Plus retreated without chloroform; 2A, gutta-percha, EndoSequence BC Sealer retreated with chloroform; 2B, gutta-percha, EndoSequence BC Sealer retreated without chloroform. Micro-CT scans were taken before and after obturation and retreatment and analyzed for the volume of residual material. The specimens were longitudinally sectioned and digitized images were taken with the dental operating microscope. Data was analyzed using an ANOVA and a post-hoc Tukey test. Fisher exact tests were performed to analyze the ability to regain patency.
Results: There was significantly less residual root canal filling material in the AH Plus groups retreated with chloroform as compared to the others. The BC Sealer samples retreated with chloroform had better results than those retreated without chloroform. Furthermore, patency could be re-established in only 14% of teeth in the BC Sealer without chloroform group.
Conclusion: The results of this study demonstrate that the BC Sealer group had significantly more residual filling material than the AH Plus group regardless of whether or not both sealers were retreated with chloroform.
키워드
AH Plus; BC Sealer; Chloroform; Endodontic sealers; Micro-CT; Retreatability
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