Effect of Calcium Hydroxide Dressing on the Dentinal Tubule Penetration of 2 Different Root Canal Sealers: A Confocal Laser Scanning Microscopic Study

Uzunoğlu-Özyürek, Emel; Erdoğan, Özge; Türker, Sevinç Aktemur

doi:10.1016/j.joen.2018.02.016

Cited by 59 publications

(49 citation statements)

References 31 publications

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“…In the study of Uzunoglu-Özyürek et al, BioRoot RCS provided higher dentinal tubule penetration than AH 26, even in the presence of calcium hydroxide [24]; however, in their study, canal fillings of all experimental groups were performed with a single GP cone combined with one sealer. This was the main difference from the method used in our study, in which AH Plus showed the deepest sealer penetration depth and higher intensity level in the apical third compared with BioRoot RCS; this is attributable to the continuous wave technique.…”

Section: Discussionmentioning

confidence: 99%

The Penetration Ability of Calcium Silicate Root Canal Sealers into Dentinal Tubules Compared to Conventional Resin-Based Sealer: A Confocal Laser Scanning Microscopy Study

Kim

et al. 2019

Materials

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The purpose of this study was to compare the penetration ability of calcium silicate root canal sealers and conventional resin-based sealer using confocal laser scanning microscopy (CLSM). A total of 60 recently extracted single-rooted human premolars were used in this study. The root canals were prepared to a size 40/0.06 taper with ProFile rotary instruments and irrigated with NaOCl and EDTA. After drying all canals, the specimens were randomly divided into three experimental groups (n = 20): Group 1, gutta-percha (GP)/AH Plus with continuous wave compaction; group 2, GP/BioRoot RCS with a single-cone technique; and group 3, GP/Endoseal MTA with a single-cone technique. All experimental samples were sectioned perpendicular to their long axis using a low-speed diamond wheel at the apical, middle, and coronal third levels. The penetration abilities of all samples were evaluated using CLSM. A Kruskal–Wallis analysis and a series of Mann–Whitney U post hoc tests were performed. A higher intensity level was found in the coronal area and a lower intensity level in the apical area in all the experimental groups. The AH Plus group showed higher sum fluorescence intensity in the apical and coronal thirds compared with the BioRoot RCS and Endoseal MTA groups, whereas the BioRoot RCS group showed a higher intensity level in the middle third, similar to the AH Plus group. The maximum sealer penetration depth was low in the apical area and high in the coronal area in the AH Plus and Endoseal MTA groups. In the BioRoot RCS group, maximum sealer penetration was observed in the middle third. In conclusion, there were significant differences in sealer penetration pattern and distance according to the root level and sealer type.

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Section: Discussionmentioning

confidence: 99%

The Penetration Ability of Calcium Silicate Root Canal Sealers into Dentinal Tubules Compared to Conventional Resin-Based Sealer: A Confocal Laser Scanning Microscopy Study

Kim

et al. 2019

Materials

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“…Nd:YAG lasers can promote vaporization in the presence of a smear layer, causing fusion/resolidification of the dentin surface, which may decrease permeability, prevent reinfection, and reduce apical infiltration [ 17 – 20 ]. Despite its importance in cleaning and disinfection, the sealing of dentinal tubules could be a disadvantage because it may interfere with the penetration of sealers into root canals [ 19 – 22 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Nd:YAG laser on the penetration of a bioceramic root canal sealer into dentinal tubules: A confocal analysis

et al. 2018

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ObjectiveThe aim of this in vitro study, is to evaluate the penetration of a bioceramic root canal sealer into dentinal tubules at 3 mm and 5 mm from the apex after Nd:YAG laser irradiation.MethodsForty freshly extracted human mandibular premolars were prepared using Reciproc® and irrigated with 17% ethylenediaminetetraacetic acid (EDTA). Teeth were divided into 4 groups: group 1, obturated with control sealer (AH Plus®); group 2, obturated with bioceramic sealer (Endosequence BC Sealer®); group 3, Nd:YAG laser + control sealer (AH Plus®); and group 4, Nd:YAG laser + bioceramic sealer (Endosequence BC Sealer®). The samples were transversely sectioned 3 mm and 5 mm from the apex and examined using confocal laser scanning microscopy. Two parameters were measured: 1) sealer penetration into dentinal tubules of the root canal and 2) sealer penetration into the perimeter of the root canal walls.ResultsPenetration analysis showed that bioceramic sealer had a higher penetration at depths of 3 and 5 mm than that of the control sealer, regardless of laser use (p <0.05). Perimeter analysis showed that there was no difference between both sealers at a depth of 3 mm (p <0.05), regardless of laser use. At a depth of 5 mm, bioceramic sealer and laser showed a greater perimeter of penetration (p <0.05) than the control sealer.ConclusionThe use of Nd:YAG laser did not compromise the penetration of bioceramic sealer into dentinal tubules of root canals at 3 mm and 5 mm from the apex.

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“…The Ca(OH) 2 paste remnants influenced only the bond strength of AH Plus sealer, which in the absence of the Ca(OH) 2 paste in the control group resulted in higher bond strength values than SN, independent of the root third. Furthermore, the SN group presented lower Ca(OH) 2 removal from the root canal, regardless of the root third, and the remaining paste may have changed the interaction of this sealer with the root dentin due to the lower levels covalent bonds formation or root canal dentinal tubule penetration (25‐27), thereby justifying the results obtained. The bond strength values were similar in all cases, except for the middle third of SN, regardless of Ca(OH) 2 paste remnants with regard to the MTA Fillapex sealer.…”

Section: Discussionmentioning

confidence: 86%

Calcium hydroxide paste removal strategies and bond strengths of epoxy‐ and silicate‐based sealers

et al. 2020

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This study evaluated the syringe/needle (SN), passive ultrasonic irrigation (PUI) and XP‐endo Finisher (XP) in the removal of Ca(OH)2‐based paste and the bond strength (BS) values of an epoxy resin (AH Plus) and silicate (MTA)‐based sealers to root dentin. Eighty lower premolars were assigned: control group (CT), SN, PUI and XP, and subdivided according to the sealer (n = 10) for BS. SN has the lowest removal followed by PUI and XP. AH Plus had higher BS for CT compared with SN in all root thirds. CT and XP presented similar BS in the apical and middle thirds and higher than SN and PUI. For MTA, similar BS was observed in the cervical and apical thirds, and in the middle third, CT, PUI and XP presented similar values and higher than SN. PUI and XP methods presented higher efficiency in the Ca(OH)2 removal, and the residual Ca(OH)2 provides a reduction in BS of the AH Plus.

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Effect of Calcium Hydroxide Dressing on the Dentinal Tubule Penetration of 2 Different Root Canal Sealers: A Confocal Laser Scanning Microscopic Study

Cited by 59 publications

References 31 publications

The Penetration Ability of Calcium Silicate Root Canal Sealers into Dentinal Tubules Compared to Conventional Resin-Based Sealer: A Confocal Laser Scanning Microscopy Study

The Penetration Ability of Calcium Silicate Root Canal Sealers into Dentinal Tubules Compared to Conventional Resin-Based Sealer: A Confocal Laser Scanning Microscopy Study

Influence of Nd:YAG laser on the penetration of a bioceramic root canal sealer into dentinal tubules: A confocal analysis

Calcium hydroxide paste removal strategies and bond strengths of epoxy‐ and silicate‐based sealers

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