Extended Setting Shrinkage Behavior of Endodontic Sealers

Hammad, Mohammad; Qualtrough, A. J. E.; Silikas, Nick

doi:10.1016/j.joen.2007.10.014

Cited by 56 publications

(52 citation statements)

References 28 publications

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“…In terms of apical filtration, the AH Plus™ sealer also presented greater filtration than GuttaFlow® in conjunction with both these techniques at 30 days. The good adaptation to the root canal walls and to the gutta-percha of GuttaFlow® could be attributed to its capacity to expand slightly on setting (2). The results of our study come to support those of previous authors, despite methodological variations.…”

Section: Discussionsupporting

confidence: 89%

Long-term sealing ability of GuttaFlow versus Ah Plus using different obturation techniques

Savariz¹,

González-Rodríguez²,

Ferrer-Luque³

2010

Med Oral

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Objective. To compare the long-term sealing ability of GuttaFlow® using different obturation techniques. Study Design. Three hundred teeth, prepared with a crown-down technique, were divided into thirty experimental groups (n=10) to evaluate the apical and coronal leakage, at 3, 30 and 120 days, of lateral compaction gutta-percha + AH Plus™, lateral compaction gutta-percha + GuttaFlow®, single cone + AH Plus™, single cone + GuttaFlow®, and GuttaFlow® only. Results. Both coronal and apical leakage, at the three times of measurement, no significant differences were found among GuttaFlow® + lateral compaction gutta-percha and GuttaFlow® + single cone groups, whereas the only GuttaFlow® reached the highest leakage values at 30 and 120 days. AH Plus™, using both techniques, showed high levels of leakage after 120 days to the coronal leakage and after 30 days to the apical leakage when compared silicon based sealer. Conclusion. GuttaFlow®, using with lateral compaction and single cone techniques, shows a greater apical and coronal sealing ability than AH Plus™ over time. GuttaFlow® when used as only creates a poorer sealing than when used with lateral compaction gutta-percha or single cone techniques.

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Section: Discussionsupporting

confidence: 89%

Long-term sealing ability of GuttaFlow versus Ah Plus using different obturation techniques

Savariz¹,

González-Rodríguez²,

Ferrer-Luque³

2010

Med Oral

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“…For micro-Raman spectroscopy, we used a focal size of 1 µm, which is sensitive to inhomogeneity. Extended setting shrinkage behavior jeopardizes the seal of root canals filled with these more rapidly polymerizing resin sealer systems (22), particularly when manufacturers recommend the use of light-curing through canal orifices to create an immediate coronal seal (18). The presence of intracanal voids was revealed by micro-CT (23).…”

Section: Discussionmentioning

confidence: 99%

Degree of conversion of a self-adhesive endodontic sealer when used as bulk material

Pérez-González

Bolaños-Carmona

Pérez-Gómez

et al. 2016

Journal of Oral Science

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This study tested the null hypothesis that the opacity of RealSeal SE (RSSE) sealer makes light-curing inefficient, while the degree of conversion (DC) is similar regardless of curing method. Fourteen uniradicular teeth were sectioned at 15 mm from the apex. Root canals were instrumented using the Reciproc file system, bulk-filled with RSSE, and divided randomly into two groups (dual-cure or self-cure). DC was determined by micro-Raman spectroscopy at 24 h, 48 h, and 1 week after filling, at 6, 9, and 12 mm from the coronal end. Contrast ratio (Yb/ Yw) was used to determine the opacity of the material. Descriptive statistics and nonparametric tests were used, and significance was defined as a P value of less than 0.05. Opacity was almost total by the first section, at 6 mm. In dual-cure mode, DC values at 24 h were lower in the apical section (63.8%) than in the more coronal sections and were lower than in selfcured specimens (87.4%). Light-curing of the coronal end did not improve DC. These differences remained at 48 h and 1 week. Only a small (2%) but significant increase in DC was observed in evaluations at 24 h and 1 week. (J Oral Sci 58, 333-338, 2016)

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“…15,16 The push-out test in this study demonstrated that the bond strengths of GP/AH Plus and Resilon/ Epiphany were significantly different, agreeing with previous studies which showed that AH Plus had higher bond strength than the methacrylated-based RCSs Epiphany and EndoREZ. 17,18 Some studies have demonstrated that Epiphany undergoes substantial polymerization shrinkage, up to 3.54%, 19 and has weak bond strength to both Resilon and dentin. 20 It is known that increasing the molecular weight of the sealer's base monomer can decrease the potential and extent of polymerization shrinkage.…”

Section: Discussionmentioning

confidence: 99%

“…23 Moreover, AH Plus then has sufficient time to extensively penetrate into microirregularities and dentinal tubules, and to react with any exposed amino groups in collagen, thereby increasing the mechanical interlocking between sealer and dentin. 19 The substantially faster curing time of Epiphany and LSRCS (40 seconds by LED light) may have generated incomplete infiltration into the demineralized dentin, which would otherwise form the hybrid layer. In addition, the oxygen molecules along the dentinal walls and tubules may inhibit free radicals polymerization and produce polymers with uncured monomers.…”

Section: Discussionmentioning

confidence: 99%

In vitro evaluation of bond strength and sealing ability of a new low-shrinkage, methacrylate resin-based root canal sealer

Fang

Mai

Ling

et al. 2012

Journal of the Formosan Medical Association

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Extended Setting Shrinkage Behavior of Endodontic Sealers

Cited by 56 publications

References 28 publications

Long-term sealing ability of GuttaFlow versus Ah Plus using different obturation techniques

Long-term sealing ability of GuttaFlow versus Ah Plus using different obturation techniques

Degree of conversion of a self-adhesive endodontic sealer when used as bulk material

In vitro evaluation of bond strength and sealing ability of a new low-shrinkage, methacrylate resin-based root canal sealer

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