Abstract
The latest generation of methacrylate resin-based sealers has eliminated the use of separate self-etching primers by incorporating acidic resin monomers in the sealers to render them self-adhesive to dentin. This study examined the adhesive strengths, interfacial ultrastructure, and tracer penetration of a nonetching (EndoREZ; Ultradent, South Jordan, UT) and two self-adhesive methacrylate resin-based sealers (MetaSEAL; Parkell, Farmington, NY, and RealSeal SE; SybronEndo, Orange, CA) when they were applied to radicular dentin following the manufacturers' recommended use of EDTA as the active final rinse. A modified push-out testing design was used to evaluate the dislodgement of core-free sealers. The mixed sealers were placed in dimensionally identical, artificially created canal spaces prepared in the coronal, middle, and apical thirds of radicular dentin. After setting, each sealer-filled cavity was subjected to compressive loading until failure. Additional specimens were prepared for transmission electron microscopy to examine the ultrastructure and nanoleakage within the sealer-radicular dentin interface. The two self-adhesive sealers MetaSEAL and RealSeal SE exhibited higher push-out strengths than the nonetching sealer EndoREZ when EDTA was used as the active final rinse. All three sealers showed a 1- to 1.5-μm thick zone of partially demineralized dentin, with the EDTA dentin demineralization effect masking the true self-etching potential of MetaSEAL and RealSeal SE. The true self-etching potential of self-adhesive sealers is a clinically important attribute that should be further investigated. Incomplete smear layer removal from the apical third of instrumented canal walls may jeopardize the performance of self-adhesive sealers should they fail to self-etch without the adjunctive use of calcium chelating irrigants.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 578-582 |
| Number of pages | 5 |
| Journal | Journal of Endodontics |
| Volume | 35 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 1 2009 |
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Keywords
- Adhesion
- EDTA
- dislocation resistance
- hybrid layer
- nanoleakage
- push-out test
- root canal sealers
ASJC Scopus subject areas
- Dentistry(all)
Cite this
Bonding of Self-adhesive (Self-etching) Root Canal Sealers to Radicular Dentin. / Babb, Brian R.; Loushine, Robert J.; Bryan, Thomas E.; Ames, Jason M.; Causey, Mark S.; Kim, Jongryul; Kim, Young Kyung; Weller, R. Norman; Pashley, David Henry; Tay, Franklin Chi Meng.
In: Journal of Endodontics, Vol. 35, No. 4, 01.04.2009, p. 578-582.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Bonding of Self-adhesive (Self-etching) Root Canal Sealers to Radicular Dentin
AU - Babb, Brian R.
AU - Loushine, Robert J.
AU - Bryan, Thomas E.
AU - Ames, Jason M.
AU - Causey, Mark S.
AU - Kim, Jongryul
AU - Kim, Young Kyung
AU - Weller, R. Norman
AU - Pashley, David Henry
AU - Tay, Franklin Chi Meng
PY - 2009/4/1
Y1 - 2009/4/1
N2 - The latest generation of methacrylate resin-based sealers has eliminated the use of separate self-etching primers by incorporating acidic resin monomers in the sealers to render them self-adhesive to dentin. This study examined the adhesive strengths, interfacial ultrastructure, and tracer penetration of a nonetching (EndoREZ; Ultradent, South Jordan, UT) and two self-adhesive methacrylate resin-based sealers (MetaSEAL; Parkell, Farmington, NY, and RealSeal SE; SybronEndo, Orange, CA) when they were applied to radicular dentin following the manufacturers' recommended use of EDTA as the active final rinse. A modified push-out testing design was used to evaluate the dislodgement of core-free sealers. The mixed sealers were placed in dimensionally identical, artificially created canal spaces prepared in the coronal, middle, and apical thirds of radicular dentin. After setting, each sealer-filled cavity was subjected to compressive loading until failure. Additional specimens were prepared for transmission electron microscopy to examine the ultrastructure and nanoleakage within the sealer-radicular dentin interface. The two self-adhesive sealers MetaSEAL and RealSeal SE exhibited higher push-out strengths than the nonetching sealer EndoREZ when EDTA was used as the active final rinse. All three sealers showed a 1- to 1.5-μm thick zone of partially demineralized dentin, with the EDTA dentin demineralization effect masking the true self-etching potential of MetaSEAL and RealSeal SE. The true self-etching potential of self-adhesive sealers is a clinically important attribute that should be further investigated. Incomplete smear layer removal from the apical third of instrumented canal walls may jeopardize the performance of self-adhesive sealers should they fail to self-etch without the adjunctive use of calcium chelating irrigants.
AB - The latest generation of methacrylate resin-based sealers has eliminated the use of separate self-etching primers by incorporating acidic resin monomers in the sealers to render them self-adhesive to dentin. This study examined the adhesive strengths, interfacial ultrastructure, and tracer penetration of a nonetching (EndoREZ; Ultradent, South Jordan, UT) and two self-adhesive methacrylate resin-based sealers (MetaSEAL; Parkell, Farmington, NY, and RealSeal SE; SybronEndo, Orange, CA) when they were applied to radicular dentin following the manufacturers' recommended use of EDTA as the active final rinse. A modified push-out testing design was used to evaluate the dislodgement of core-free sealers. The mixed sealers were placed in dimensionally identical, artificially created canal spaces prepared in the coronal, middle, and apical thirds of radicular dentin. After setting, each sealer-filled cavity was subjected to compressive loading until failure. Additional specimens were prepared for transmission electron microscopy to examine the ultrastructure and nanoleakage within the sealer-radicular dentin interface. The two self-adhesive sealers MetaSEAL and RealSeal SE exhibited higher push-out strengths than the nonetching sealer EndoREZ when EDTA was used as the active final rinse. All three sealers showed a 1- to 1.5-μm thick zone of partially demineralized dentin, with the EDTA dentin demineralization effect masking the true self-etching potential of MetaSEAL and RealSeal SE. The true self-etching potential of self-adhesive sealers is a clinically important attribute that should be further investigated. Incomplete smear layer removal from the apical third of instrumented canal walls may jeopardize the performance of self-adhesive sealers should they fail to self-etch without the adjunctive use of calcium chelating irrigants.
KW - Adhesion
KW - EDTA
KW - dislocation resistance
KW - hybrid layer
KW - nanoleakage
KW - push-out test
KW - root canal sealers
UR - http://www.scopus.com/inward/record.url?scp=63449115109&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=63449115109&partnerID=8YFLogxK
U2 - 10.1016/j.joen.2009.01.005
DO - 10.1016/j.joen.2009.01.005
M3 - Article
C2 - 19345809
AN - SCOPUS:63449115109
VL - 35
SP - 578
EP - 582
JO - Journal of Endodontics
JF - Journal of Endodontics
SN - 0099-2399
IS - 4
ER -