Sealing properties of a new epoxy resin‐based root‐canal sealer

Zmener, Osvaldo; Spielberg, Carlos; LAMBERGHINI, F.; RUCCI, M.

doi:10.1046/j.1365-2591.1997.00086.x

Cited by 43 publications

(23 citation statements)

References 8 publications

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“…23 Several studies concerning root canal sealers classify AH Plus sealer as the product with the lowest apical marginal dye index. 4,[14][15][16]24,25 However, as found in this and other studies (e.g., Onay et al), 26 Figure 1 -SEM images of the dentin surface without laser irradiation (A), showing a clean wall free of smear layer and open dentin tubules; after diode laser irradiation (B), melting of the dentin surface can be noted, along with a few dentin tubules, most of them occluded.…”

Section: Discussionsupporting

confidence: 58%

“…3,4,[6][7][8][9][10][11][12] There are several studies about materials and root canal filling techniques that aim to achieve apical sealing of teeth. [13][14][15][16][17] Currently, studies with Epiphany (Pentron Clinical, Orange, USA) and RealSeal (Sybron Endo, Redmond, USA), both methacrylate-based resin sealers, have shown promising results in comparison with other base sealers. 1,18,19 However, it is not well-known if the combined association of intracanal Declaration of Interests: The authors certify that they have no commercial or associative interest that represents a conflict of interest in connection with the manuscript.…”

Section: Introductionmentioning

confidence: 99%

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Influence of prior 810-nm-diode intracanal laser irradiation on hydrophilic resin-based sealer obturation

et al. 2012

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Section: Discussionsupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Influence of prior 810-nm-diode intracanal laser irradiation on hydrophilic resin-based sealer obturation

et al. 2012

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“…One possible explanation is that the silicone oils used in AH-Plus™ may prevent complete wetting of the canal walls by the material. 144 The present results also revealed differences between the two MTA cements. This point is more of scientific rather than clinical importance, as MTA materials would not normally be used for the bulk obturation of a canal, despite their common use for perforation repairs.…”

Section: Discussionsupporting

confidence: 54%

Selected performance characteristics of non-aqueous alkaline endodontic materials

Teoh¹

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During root canal treatment, the root canal of a tooth is prepared, disinfected and filled. Alkaline materials have been used in endodontics for many years mainly as medicament pastes rather than for obturation of the root canal system. Calcium hydroxide, the most commonly used alkaline material in dentistry, releases hydroxyl ions which cause disinfection of the root canal system. The first part of this thesis examines the use of calcium hydroxide in non-aqueous solvents and compares this to calcium hydroxide in traditional water-based solvents. The novel use of anthocyanin as an indicator allowed tracking of diffusion of hydroxyl ions through root dentine.The discovery of calcium hydroxide-induced polymerisation of certain organic compounds such as glycerol to form a hard setting alkaline cement opens the possibility of using these materials for short or long term obturation of the root canal. In the second part of the thesis, a bacterial leakage study was carried out to compare the sealing capabilities of various root filling materials including this novel hard-setting alkaline cement as well as mineral trioxide aggregate (MTA) cements, which release calcium hydroxide from their setting reaction, and traditional epoxy resin sealers.In the third part of the thesis, the root fillings were then assessed in terms of their removability, a parameter which is relevant both for post space preparation and in the event that retreatment is required. Materials were tagged with a fluorescent label and then confocal laser scanning microscopy was used to assess the extent of remnant material and the cleanliness of the root canal walls.The results from Part 1 indicated that hydroxyl ion release into root dentine is greater with non-aqueous solvents, resulting in a sustained level of high alkalinity within the root.This feature should provide longer disinfection and should therefore reduce the number of inter-appointment visits clinically. In Part 2, bacterial leakage studies demonstrated that alkaline cements had greater sealing capabilities than commonly used epoxy resin sealers. This is most likely due to the antibacterial actions of hydroxyl ions released from alkaline cements. In Part 3 of the thesis, with regards to removability using rotary instrumentation, the novel hard-setting calcium hydroxide cement was more easily removed than MTA 3 cements or epoxy resin sealers, with the latter coating half of the canal walls after instrumentation.Overall, the findings from this thesis show that while calcium hydroxide pastes based on water are an integral and long standing part of root canal disinfection, the potential use of calcium hydroxide in dentistry is wider than its current applications. The research from this thesis shows that calcium hydroxide in non-aqueous solvents may be suitable for use as a disinfecting medicament and that when incorporated into a cement it may have properties that are well suited to being used in obturation of the root canal.4

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“…It is believed that the AH plus sealer did not adapt well to dentin walls because of the hydrophobic properties of epoxy resins. 23 And a study reported that all the specimens filled with AH plus sealer leaked within 13 days. This could be because of shrinkage of this epoxy type sealer during setting.…”

Section: Discussionmentioning

confidence: 99%

Effect of moisture on sealing ability of root canal filling with different types of sealer through the glucose penetration model

Jang

Kim

Her

et al. 2010

J Korean Acad Conserv Dent

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Objectives: To compared the effect of different levels of moisture of root canal on the sealing ability after filling with four different types of sealer. Materials and Methods: Single-rooted teeth (n = 90) instrumented to and apical size of 0.06 / 45 were randomly assigned to 12 experimental groups (n = 7 per group), positive/negative control groups (n = 3 per group). The teeth of the experimental groups (a. DRY; b. PAPER POINT DRY; c. WET) were obturated with sealer (Group 1-3: Sealapex; Group 4-6: AH plus; Group 7-9: Tubuli-seal; Group 10-12: EndoRez) and warm vertical compaction method. After 7 days in 37℃, 100% humidity, the coronal-to-apical microleakage was evaluated quantitatively using a glucose leakage model. The leaked glucose concentration was measured with spectrophotometer at 1, 3, 7, 14, 21, and 30 days. Data were recorded ad mmol/L and statistically analysed with the two-way ANOVA and Duncan test (p = 0.05). Results: Throughout the experimental period Tubuli-seal/WET (Group 9) showed the highest mean cumulative glucose penetration (178.75 mmol/L), whereas AH plus/DRY (Group 4) had the least (20.78 mmol/L). Conclusions:The results of this study demonstrated that the moisture condition of root canals at the time of obturation and the type of sealer that was used had a significant effect on leakage and sealing ability. Thus drying procedure according to sealer types is a critical step and should not be missed in endodontic treatment.

show abstract

Sealing properties of a new epoxy resin‐based root‐canal sealer

Cited by 43 publications

References 8 publications

Influence of prior 810-nm-diode intracanal laser irradiation on hydrophilic resin-based sealer obturation

Influence of prior 810-nm-diode intracanal laser irradiation on hydrophilic resin-based sealer obturation

Selected performance characteristics of non-aqueous alkaline endodontic materials

Effect of moisture on sealing ability of root canal filling with different types of sealer through the glucose penetration model

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