An In Vitro Evaluation of the Sealing Ability of a New Root-canal–obturation System

Abstract

In this study the sealing ability of a new urethane methacrylate resin-based sealer, EndoRez, was evaluated using a fluid-filtration model. Sixty-four single-rooted lower bicuspids were decoronated, instrumented, and divided into 3 groups of 20 each with 4 teeth used as controls. In group A, the roots were obturated with EndoRez and a single cone of gutta-percha, group B with AH Plus and a single cone of gutta-percha, and group C was obturated using gutta-percha with warm vertical compaction and AH Plus sealer. All specimens were allowed to set for 7 days in 100% humidity at 37 degrees C. The groups were compared for differences in the amount of leakage (mm/h) using a Chi-square test. The leakage of group A was significantly higher at p = 0.01 than the other two groups. There was no significant difference in leakage between groups B and C.

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

“…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.…”

“…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.…”

An Evaluation of the Apical Seal in Oval-shaped Root Canals Prepared with Either Self-adjusting Files or ProTaper Files

“…This method was proved advantageous, with sensitive and reproducible results. 22 The computerized fluid filtration meter used in this study had the primary advantages of computer controlled and digital air pressure arrangement, compared to conventional meters. Moreover, the movement of a small air bubble can be observed with computer-controlled laser diodes.…”

Microleakage of resilon: Effects of several self-etching primer

“…그러나 epoxy resin sealer는 gutta percha와 접착을 이루지 못하고 상아질과의 결합력 이 충분하지 못하여 gap을 형성하게 되고 그 공간은 근관치 료의 실패를 유발하는 잠재적인 원인이 될 수 있다 20) . 이러 한 잠재적인 원인을 제거하고 이상적인 근관충전을 이루기 위해서 resin을 이용한 근관충전에 대한 연구가 이루어졌고 9) , metacrylate-based sealer와 gutta percha를 사용하여 충전한 근관의 밀폐효과를 비교한 연구가 이루어졌다 21,22) . Polymethylmetacrylate와 methylmethacrylate를 사용 한 실험에서 치근단 밀폐능력은 gutta percha와 sealer를 사용한 경우보다 더 좋은 밀폐능력을 나타내는 결과를 얻었 으나 재근관치료를 불가능하게 하였고 9) , metacrylatebased sealer와 gutta percha를 사용한 근관충전의 밀폐 능력은 gutta percha cone과 일반적인 epoxy resin sealer를 사용한 경우보다 낮은 것으로 보고된 바 있다 23) .…”