Sealing properties of a new root canal sealer (original) (raw)
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Polymicrobial Leakage of Four Root Canal Sealers at Two Different Thicknesses
Journal of Endodontics, 2006
The present study investigated the sealing ability of four root canal sealers at two different thicknesses. There were 82 maxillary incisors roots prepared with Gates Glidden drills up to size 6 and divided into four groups: Pulp Canal Sealer, EndoREZ, Sealapex, and AH Plus. Each group was divided in two subgroups and gutta-percha cylinders 1.5 or 1 mm wide were used, respectively. The roots were mounted in a bacterial leakage model and the system was checked daily during the following 12 wk. Data were analyzed by Log-Rank test and Student t-test. In the thin layer samples, the sealers demonstrated similar results while, in the thick layer samples, AH Plus revealed the best performance. Generally, greater sealer thickness influenced negatively the sealing ability of the root canal filling, except in AH Plus samples. (J Endod 2006;32: 998 -1001)
Journal of Clinical and Experimental Dentistry
Background: The purpose of this study was to compare the sealing ability of MTA Fillapex, Apatite Root Canal Sealer and AH26 sealers. Material and Methods: The present in vitro study was carried out on 142 extracted single-rooted human mature teeth. The teeth were randomly divided into three experimental groups (n=44) and two control groups (n=5). Three root canal sealers were MTA Fillapex, Apatite Root Canal Sealer and AH26. The teeth in the control groups were either filled with no sealer or made completely impermeable. The root canals were prepared and obturated with gutta-percha and one of the sealers. The teeth were sterilized with ethylene oxide gas prior to the bacterial leakage assessment using Enterococcus faecalis. Leakage was evaluated every 24 hours for 90 days. Data were analyzed with descriptive statistical methods and chi-squared test. If the data were significant, a proper post hoc test was used. Statistical significance was set at P<0.05. Results: The positive control specimens exhibited total bacterial penetration whilst the negative control specimens showed no evidence of bacterial penetration. At the end of the study, the analysis of microleakage with chi-squared test showed no significant differences between the experimental groups (P<0.05). The results of chi-squared test analyzing the pair-wise differences between the groups considering the numerical values for leakage day indicated the lowest leakage with AH26 and the highest with Apatite root sealer. Conclusions: According to the results of the present study, sealing ability of AH26 was significantly higher than that of MTA Fillapex and Apatite Root Canal Sealer.
Resistance of a Novel Root Canal Sealer to Bacterial Ingress In Vitro
Journal of Endodontics, 2000
A dentin-bonding root canal sealer (ZUT) has been developed, consisting of an experimental glass ionomer cement (KT-308) and an antimicrobial silver-containing zeolite (0.2% by weight). This in vitro study evaluated the ability of ZUT used with or without gutta-percha, to resist bacterial ingress of Enterococcus faecalis over a period of 90 days. Canals of 80 single-rooted teeth were prepared with apical patency and filled as follows (n ؍ 10): KT-308 alone; KT-308 with a single gutta-percha cone (SCGP); ZUT alone; ZUT with SCGP; AH26 alone; AH26 with SCGP; positive control-no root canal filling; and negative control-no root canal filling, with the apices of this group sealed with C&B Metabond cement. Teeth were coated with nail polish except for the apical 2 mm, and each tooth was sealed in a 4-ml glass vial, with an 18gauge needle inserted through the vial cover and bonded into the pulp chamber with C&B Metabond cement. After sterilization with 2.5 Mrad ␥-radiation, Brain Heart Infusion broth with phenol red was injected into each vial. An inoculum of E. faecalis was pipetted through the needle into the pulp chamber every 5 days, and the broth was monitored daily for color change and turbidity. When change occurred, the broth was cultured for growth of E. faecalis. Kaplan-Meier survival analysis and the log-rank test revealed no significant differences among the three sealers used. The presence of gutta-percha, however, significantly improved resistance to bacterial ingress through obturated root canals (, p < 0.05). Under the conditions of this study, the hypothesized advantage of ZUT (0.2% zeolite) was not demonstrated.
Egyptian Dental Journal
Introduction: The main aim of root canal therapy is adequate sealing to prevent reinfection with subsequent periapical disease. The aim: The aim of this study was to compare the sealing ability of root canal filled teeth using three different sealers and three different restorative materials by bacterial penetration method during a 30-day period. Materials and Methods: Seventy-two single rooted teeth were prepared using Protaper Next. Obturation was done using single cone technique .The teeth were randomly divided into three groups of 24 samples according to the sealer used as following; group 1: Bioceramic sealer (BS), group 2: MTA fillapex (MTA) and group 3: Tagdseal sealer (TG). The samples then randomly subdivided into 3 groups of 8 samples according to the coronal restoration of the specimens as following; subgroup A: Composite (Tetric Ceram + Tetric N Bond), subgroup B: Compomer (Compoglass F + Adhese SE) and subgroup C:Glass Ionomer (Ketac N + Ketac primer).Therefore, there was 9 final groups; I, II, III, IV, V, VI, VII, VIII, IX.After setting time, the samples were incorporated in a bacterial leakage model, using E. faecalis. Leakage was evaluated by turbidity in lower chamber in 30-day period. Statistical analysis was done using One-wayANOVA test, and post hoc pairwise comparison was done using Tukey test. Results: The results showed that group I (BS-Composite) presented the lowest means of bacterial leakage after all periods of evaluation. On the other hand, the (MTA-Glass Ionomer) material showed the highest means of leakage. There was a significant difference between the means of the bacterial colonies recorded in the nine groups at one, 2 and 4 weeks; while at 3 weeks the difference was insignificant. Conclusion : Bioceramic sealer with composite restoration showed the least bacterial leakage.
Sealing properties of different resin-based root canal sealers
Journal of Biomedical Materials Research Part B-applied Biomaterials, 2006
In this study, a comparison of the sealing properties of three different resin-based sealers, AH26, Diaket, and EndoREZ with those of the root canal sealer zinc oxide–eugenol-based U/P Root Canal Sealer was performed. Eighty extracted single-rooted human mandibular first premolar teeth were used. The coronal part of each tooth was removed at the apical 17-mm of roots. The root canals were prepared to a size 7 with ProFile 0.06 taper Series 29 rotary instruments in a crown-down manner before lateral condensation of gutta-percha with the tested sealers (n = 20). A fluid filtration method was used for quantitative evaluation of apical leakage. Statistical analysis revealed that there were no significant differences between the resin-based sealers groups (AH26, Diaket, and EndoREZ) (p>0.05). U/P Root Canal Sealer, zinc oxide–eugenol-based sealer, leaked significantly more than other tested groups (p<0.05). Under the limitations of this study, resin-based root canal sealers were found more effective in sealing root canals than the zinc oxide–eugenol-based sealer. © 2005 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2006
Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 2009
Objective. This study evaluated the ability of a resin-based system (Resilon/Epiphany) and gutta-percha/sealer with warm vertical or cold lateral compaction to prevent coronal leakage. Study design. A polymicrobial suspension in a dual-chamber model was used. Seventy extracted maxillary incisors were prepared, divided into 4 groups, and obturated: Group 1, lateral compaction/gutta-percha/AH Plus; Group 2, lateral compaction/Resilon; Group 3, continuous wave compaction/gutta-percha/AH Plus; Group 4, continuous wave compaction/Resilon. Upper chambers held a mixed suspension of endodontic pathogens. Apices were suspended in the lower chambers. Leakage was determined daily for 40 days and evaluated for turbidity. Data were analyzed using survival analysis; log-rank test was used to analyze differences in time to leakage. Results. Median time to leakage: 16, 15, 11, and 25 days for Groups 1 to 4 respectively (P ϭ .93, log-rank test).
COMPARISON OF THREE BIOCERAMIC SEALERS IN TERMS OF DENTINAL SEALING ABILITY IN THE ROOT CANAL
International Journal of Applied Pharmaceutics , 2020
Objective: The main objective of endodontic treatment is to prevent further infection or reinfection by eliminating microorganisms within the root canal system. Proper endodontic treatment could prevent apical and coronal penetration of fluids and microorganisms. Endodontic sealer is vital components of root canal obturation to establish a fluid-tight seal. Bioceramic-based root canal sealers are considered to be an advantageous technology in endodontics and have been found to be both biocompatible and comparable to other commercial sealers. The aim of this study was to compare the adhesion of three bioceramic sealers within the root canal system. Methods: Endodontically treated teeth were obturated using three types of bioceramic sealers and then divided into three groups. Specimens were then observed using a scanning electron microscope, and the attachment distance was measured using ImageJ. Results: The three groups exhibited were statistically significant differences (p<0.05) in dentinal sealing ability. Calcium phosphate silicate-based sealer showed the highest sealing ability, followed by pure tricalcium silicate-based bioceramic sealers and then tricalcium silicate and resin-based bioceramic sealers. Conclusion: The sealing ability of calcium phosphate silicate-based sealer is superior to that of both pure tricalcium silicate-based and tricalcium silicate-and resin-based sealer.
Journal of Liaquat University of Medical & Health Sciences
June-December 2018. Fresh extracted 32 teeth were included and their crowns were sectioned at Cemento-Enamel Junction/service to obtain 12mm standard root length. The access cavity was gained using endodontic instruments. The teeth were divided into two groups, in Group A (n=16) MTA Bioceramic and in Group B (n=16) AH Plus was used as root canal sealers by single cone obturation technique. The obturated specimens were stored in humid conditions for one week. Analysis was done using SPSS version 20. RESULTS: Mean and standard deviation of dye leakage for Bioceramic were 2.25±0.9 whereas for AH Plus was significantly lower, 1.19±0.75. Teeth included in Group A were central incisors 37.5%, lateral incisors 18.8%, canine 12.5%, lower first premolars 12.5% and second premolars 6.3%, whereas Group B consisted of central incisors 18.8%, lateral incisors 12.5 %, canine 12.5%, lower first premolars 18.8 % and second premolars 6.3%. Dye leakage was higher in Group A compared to Group B with a significant P-value < 0.001. CONCLUSION: It can be concluded based on this study that AH Plus offers a better apical seal as compared to Bioceramic-based MTA Fillapex sealers.
2019
The aim of the study was to analyse the sealing ability of three root canal sealers: AH Plus, MTA Fillapex and Resilon/RealSeal SE. Methodology: Eighty freshly extracted human permanent mandibular first premolars were decoronated using a diamond disc at a level of 14 mm from the root tip in order to maintain uniformity of specimen length. Cleaning and shaping was done using Hyflex CM rotary instruments. The teeth were randomly divided according to the obturating material into three experimental groups. The coronal part of each root specimen was attached to an apparatus initially proposed by Xu., et al. to assess endodontic microleakage. All specimens were then incubated at 37°C during the observation period. Samples were then analyzed with a glucose kit using colorimetry, and were expressed in mMol/L. Conclusion: None of the sealers were efficient in preventing microleakage within the root canals. Under the experimental conditions, AH Plus had the least amount of endodontic leakage followed by RealSeal SE and MTA Fillapex.