Materials used for root canal obturation: technical, biological and clinical testing

Ørstavik, Dag

doi:10.1111/j.1601-1546.2005.00197.x

Cited by 268 publications

(294 citation statements)

References 76 publications

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“…Endodontic sealers play an important role as they aid sealing the endodontic cavity by filling re-entrances, irregular spaces and dentinal tubules, all areas inaccessible for endodontic instruments, thus improving the adaptation of root filling at the dentin-material interface (4,5). Penetration of endodontic sealers also presents advantages because they are biologically beneficial, due to their antibacterial effects on the infected dentinal tubules (6).…”

Section: Introductionmentioning

confidence: 99%

Filling Effectiveness and Dentinal Penetration of Endodontic Sealers: A Stereo and Confocal Laser Scanning Microscopy Study

et al. 2015

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The aim of this study was to evaluate the filling effectiveness and dentinal penetration of the sealers AH Plus, Pulp Canal Sealer EWT, Sealapex and MTA Fillapex applied according to the vertical condensation technique using thermoplastic gutta-percha. Forty singlerooted teeth were selected. After chemical-mechanical preparation and root-canal filling, sections of the root (2, 4 and 6 mm from the apex) were obtained and analyzed by stereo microscopy and confocal laser scanning microscopy. Data were tabulated and statistically analyzed. With regard to the assessment of void spaces in the filling material at 2 mm from the apex, the sealers showed similar results, but at 4 and 6 mm from the apex, MTA Fillapex had inferior performance compared to AH Plus (at 4 mm), Pulp Canal Sealer EWT (at 4 and 6 mm) and Sealapex (at 6 mm) (p<0.05). With regard to the penetration into dentinal tubules at 2 mm from the apex, the sealers also showed similar results, but at 4 and 6 mm Pulp Canal Sealer EWT had an inferior performance compared to MTA Fillapex and AH Plus, respectively (p<0.05). All four sealers were found to be similar regarding adaptation of the filling material to the root canal walls, except the MTA Fillapex, which showed failures at 4 and 6 mm from the root apex. With regard to the ability to penetrate into the dentinal tubules, the sealers were found to be equivalent, except for the Pulp Canal Sealer EWT as it had poorer results at 4 and 6 mm compared to MTA Fillapex and AH Plus, respectively.

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Section: Introductionmentioning

confidence: 99%

Filling Effectiveness and Dentinal Penetration of Endodontic Sealers: A Stereo and Confocal Laser Scanning Microscopy Study

et al. 2015

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“…1 Representatives of this group, such as Roth 801, may include Bi and Ba salts for x-ray contrast and present some antibacterial activity, as well as better wettability of dentin and gutta-percha surfaces than other sealers. 2 Resin-based sealers also have decades of successful use in Endodontics.…”

Section: Introductionmentioning

confidence: 99%

“…Materials from this group, such as Sealapex and Apexit, are expected to present bioactivity, even though with complex setting reaction and lack of physical sturdiness. 1 The stability and adhesive properties of silicone led to the production of sealers such as GuttaFlow, a combination of nanometer-sized silver particles, gutta-percha powder, and polydimethylsiloxane, developed with the intention of overcoming the disadvantages of the warm gutta-percha obturation technique. 7 The slight expansion of these materials during setting is conjectured to result in an improved apical seal of the root canal system.…”

Section: Introductionmentioning

confidence: 99%

Effect of time of extraction on the biocompatibility of endodontic sealers with primary human fibroblasts

2012

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The aim of this work was to evaluate the effects of different times of extraction on the cytotoxicity of six representatives of different root canal sealer groups-Real Seal SE, AH Plus, GuttaFlow, Sealapex, Roth 801, and ThermaSeal Plus-with human gingival fibroblasts. The materials were prepared according to manufacturers' specifications, and were incubated in culture medium (DMEM) at 37°C for 1, 7, 14, 21, and 28 days, with daily washing, to simulate periodontal ligament clearance. Human fibroblasts were exposed to the final extracts at 24 hours, and cell viability was determined by MTT assay, with exposure to unconditioned DMEM as a negative control. Statistical analysis comparing cytotoxicities at each exposure time was performed by ANOVA with Scheffé adjustment for multiple comparisons at a 95% confidence level. Results indicated that GuttaFlow was significantly less cytotoxic than all other sealers (p < 0.05) at 1 day of extraction. After 7 days of extraction, cell viability for GuttaFlow was significantly increased as compared with that of all groups except sealer AH Plus. At day 14, cytotoxicity of Sealapex was significantly higher than that of all other sealers (p < 0.05). At days 21 and 28, there were no significant differences in cytotoxicity among sealer groups. All materials presented some level of cytotoxicity to fibroblasts, while GuttaFlow was the least cytotoxic sealer tested. However, the cytotoxicity of all materials seemed to decrease similarly in a time-dependent manner.

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“…3 Regardless of the filling technique, the use of a sealer is essential 4 because it establishes a unique joint between radicular dentin and the filling material. 5 Consequently, an ideal sealer should adhere to both the dentin and the core filling, 6 hermetically seal the root canal system without being disrupted in the long term, 6,7 and resist dislocation during tooth…”

Section: Introductionmentioning

confidence: 99%

Bond strength of a calcium silicate-based sealer tested in bulk or with different main core materials

et al. 2014

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Bond strength of a calcium silicatebased sealer tested in bulk or with different main core materials Abstract: The aim of this study was to evaluate the influence of a calcium silicate-based sealer (iRoot SP), with or without a core material, on bond strength to radicular dentin, in comparison with various contemporary root filling systems. Root canals of freshly extracted singlerooted teeth (n = 60) were instrumented using rotary instruments. The roots were randomly assigned to one of the following experimental groups: (1) a calcium silicate-based sealer without a core material (bulk-fill); (2) a calcium silicate-based sealer + gutta-percha; (3) a calcium silicate-based sealer + Resilon; (4) a methacrylate resin-based sealer (RealSeal SE) + Resilon; (5) an epoxy resin-based sealer (AH Plus) + gutta-percha, and (6) a mineral trioxide aggregate-based endodontic sealer (MTA Fillapex) + gutta-percha. Four 1-mm-thick sections were obtained from the coronal aspect of each root (n = 40 slices/group). Push-out bond strength testing was performed at a cross-head speed of 1 mm/min, and the bond strength data were analyzed statistically by one-way analysis of variance and Tukey tests (p < 0.05). The highest and lowest debonding values were obtained for the calcium silicate-based sealer bulk-fill and mineral trioxide aggregate-based endodontic sealer + gutta-percha groups, respectively (p < 0.05). It was concluded that the calcium silicate-based sealer showed higher resistance to dislocation in the bulk-filled form than in conjunction with the tested core filling materials. When the calcium silicate-based sealer was placed in bulk, its dislocation resistance was similar to that of commonly used sealer + core root filling systems. Thus, the concept of using a calcium silicatebased sealer in bulk can be more easily advocated in clinical practice.

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Materials used for root canal obturation: technical, biological and clinical testing

Cited by 268 publications

References 76 publications

Filling Effectiveness and Dentinal Penetration of Endodontic Sealers: A Stereo and Confocal Laser Scanning Microscopy Study

Filling Effectiveness and Dentinal Penetration of Endodontic Sealers: A Stereo and Confocal Laser Scanning Microscopy Study

Effect of time of extraction on the biocompatibility of endodontic sealers with primary human fibroblasts

Bond strength of a calcium silicate-based sealer tested in bulk or with different main core materials

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