In Vitro Comparison of Apical Leakage in Root Canals Obturated with 0.04 and 0.02 Tapered Gutta-Percha (original) (raw)
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Journal of Endodontics, 1991
Previous studies have shown that lateral condensation of gutta-percha and sealer can provide an adequate apical seal. The purpose of this study was to compare the level of apical dye penetration when different sealers were used. One-hundred twentyfive teeth with single root canals were biomechanically prepared using the step-back technique and irrigation with EDTAC and 1% NaOCI solutions. The teeth were divided into five groups of 25 teeth each. The control group root canals were filled with laterally condensed gutta-percha and no sealer and the other four groups were filled with laterally condensed gutta-percha and either Apexit, Sealapex, Tubli-Seal, or AH26 sealer. After storage in 100% humidity at 37~ for 48 h, the root surfaces were coated with nail varnish (except at the apex) and placed in 2% methylene blue dye solution and centrifuged at 3 x g for 3 min. The roots were sectioned transversely at 1-mm intervals to determine the following mean levels of dye penetrations: Apexit, 1.67 mm; Sealapex, 2.28 mm; Tubli-Seal, 1.95 mm; AH26, 0.82 mm; and gutta-percha alone, 8.37 mm. This study demonstrated that a root canal sealer should be used in conjunction with laterally condensed gutta-percha and that AH26 sealer provides a significantly better apical seal than the other sealers.
Journal of Pierre Fauchard Academy (India Section), 2017
Aim: To compare apical sealing ability of lateral compaction and single cone gutta-percha techniques in root canals obturated using three different resin-based root canal sealers. Material and method: Seventy single-rooted human premolars were endodontically treated using hand protapers. The samples were divided into three groups, that is, group I (n = 20): AH Plus sealer; group II (n = 20): MetaSEAL sealer and group III (n = 20): GuttaFlow2. On the basis of obturation technique, each group was further subdivided into two subgroups of 10 each: subgroup A: single cone and subgroup B: cold lateral condensation. All the specimens were immersed in methylene blue dye for 24 h, and then the teeth were sectioned longitudinally. Apical leakage was measured under a stereomicroscope. The data were subjected to statistical analysis using Kruskal-Wallis test and Mann-Whitney U test. Results: Lateral condensation showed significantly less leakage than single cone technique could do. GuttaFlow2 showed the least apical leakage followed by MetaSEAL and then AH Plus. The difference between all the groups was statistically significant except between GuttaFlow2 and MetaSEAL. Conclusions: The apical sealing ability of lateral condensation was better than the single cone technique. GuttaFlow2 showed superior sealing ability as compared to MetaSEAL and AH Plus in both lateral compaction and single cone technique.
International Endodontic Journal, 1994
The purpose of this investigation was to compare in V iiro the sealing ability of root canal treatments performed in situ with injected thermopiasticized guttapercha compared with the lateral condensation technique. Thirty single-rooted teeth with straight canals, due for extraction for orthodontic or periodontal reasons were prepared using a step-back technique. Teeth were then divided randomly into groups A and B and obturated, respectively, with the sectional injection thermopiasticized gutta-percha and the lateral condensation techniques. Teeth were extracted after 15 days, immersed in India ink for 3 days and the leakage was determined using area-metric analysis. The roots were ground transversally and the root portion was incrcmentaly removed with successive steps of 250 pjn each, up to the coronal level of the dye penetration. Everj' section was photographed with a stereoscopic microscope under the same magnification (X 20); 310 photographs were taken. Measurements of the area covered by ink as well as the whole cross-sectional area of the canal were made from each photograph with the aid of a digitizing computer. The measurements were subjected to non-parametric statistical analysis. No significant difference vvas found (P>0.05). The technique of lateral condensation proved to be better in the first five sections (1.2 mm from the foramen) while thermopiasticized gutta-percha technique was superior in the rest of the root canal.
The effect of using different tapered master cones on apical seal of root-filled teeth
The purpose of this study was to compare the sealing ability of root canal filling by using 0.02 or 0.06 tapered gutta-percha master cones. Fifty six extracted single-root human premolars were selected and canals were prepared by RaCe 0.06 tapered rotary instruments. They were randomly divided into two experimental groups of 23 teeth in each and two control groups of 5 teeth in each. Then, canals were obturated with lateral condensation technique by using two different master points: a 0.06 tapered guttapercha (group A) and standardized (0.02) points (group B). Apical sealing ability in each group was evaluated by linear dye penetration method. Dye penetration was significantly greater in group A than group B. It was concluded that root canal filling with 0.02 tapered master points may be superior to 0.06 points.
Apical leakage of root canal system obturation materials
Stomatoloski Glasnik Srbije, 2005
Hermetička opturacija kanalnog sistema na apeksnom spoju dentina i cementa jedan je od uslova za uspeh preduzete endodontske terapije. Cilj ovog rada bio je da se in vitro proveri kvalitet apeksnog zaptivanja tri različita materijala za opturaciju kanala korena zuba semikvantitativnom metodom bojenih rastvora. U istraživanju je korišćeno 55 jednokanalnih zuba, a kao test materijali za opturaciju korišćeni su AH-plus, Ketac-Endo i Endometazon. Linearni prodor boje je tumačen posle prosvetljavanja zuba u 2% rastvoru metil salicilata. Dobijeni rezultati su ukazali na efikasniju vezu između materijala za opturaciju i zidova kanala, odnosno, bolje apeksno zaptivanje ostvareno je kod AH-plus (0.25mm) i Ketac-Endo (0.52mm) dok je veću apeksnu propustljivost i slabije athezivne osobine pokazao Endometazon (2.35mm), Ni jedan od testiranih materijala za opturaciju kanala korena nije pokazao potpuno apeksno zaptivanje.
2011
The aim of this study was to determine the percentage of gutta-percha-filled area (PGFA) in the apical third of root canals after filling with either System B or cold lateral lateral condensation techniques. Sixty-six recently extracted human maxillary central incisors were prepared with ProTaper NiTi rotary files and randomly divided into two groups of 33 teeth each. Root canal obturation was carried out as the following: Group 1: Cold lateral condensation technique; Group 2: System B. The teeth were sectioned horizontally at 1, 2, 3, 4 mm from the working length. The total cross-sectional area of each canal was measured and the areas of gutta-percha, sealer and voids were calculated and converted to percentages of total surface area. Data were subjected to the Independent t test. At all levels, System B produced significantly higher gutta-percha filled areas (P < 0.001) and lower sealer and void-filled areas (P < 0.001) than lateral condensation technique. System B exhibited better complete obturation with minimal sealer thickness compared to cold lateral condensation.
Journal of International Society of Preventive & Community Dentistry, 2021
Objective: The aim of this article is to evaluate the quality of filling in endodontically treated root canals using the lateral condensation technique and modified lateral condensation technique. Materials and Methods: Thirty-two single-rooted teeth were divided into two groups that were assigned by simple randomization according to the filling technique. Once the endodontic treatment was performed, a periapical radiograph was taken to assess the quality according to the radiographic density and tomography was taken to evaluate the quality according to the tomographic volume of spaces, compared with the post-preparation biomechanical tomography. Finally, we performed a statistical analysis (Student’s t-test) to evaluate whether there were differences between the types of filling. Results: Radiographic radiodensity was 182.89 ± 9.81 and 186.72 ± 6.97 HU for teeth treated with the lateral condensation technique and modified lateral condensation technique, respectively. The void volum...
International Journal of Dental Materials, 2021
Background: The most desirable outcome of endodontic treatment is to achieve a fluid-tight seal of the root canal space. Root canal sealers are used in combination with core filling materials to fill the irregularities in the root canal, resulting in a three-dimensional seal that prevents bacterial regrowth. Aim: This study was aimed to compare the apical sealing ability of three root canal sealers AH Plus, Endosequence BC, and Endoseal MTA, using a single cone gutta-percha obturation technique. Materials and methods: Forty extracted human single-rooted mandibular premolar teeth were decoronated to a standardized length of 15 mm and instrumented using crown down technique with the ProTaper gold rotary file system to apical file size F3. The roots were randomly allocated into three experimental groups (n=10) and two control groups (n=5). All the samples in experimental groups were obturated with a matched taper single cone: Group 1, Group 2 and Group 3 were obturated using AH Plus, Endosequence BC and Endoseal MTA sealers, respectively. Samples were immersed in 1% Methylene blue dye solution for 72 hours, and then the roots were split longitudinally and observed under a stereomicroscope. Apical microleakage was measured from the apex to the most coronal level of dye penetration. The data obtained were subjected to statistical analysis. Results: Samples in all the groups showed evidence of leakage, except in the negative control group. One-way ANOVA showed significant differences between the groups (p=0.00132). Posthoc analysis exhibited a significant difference between group 2 and group 3 (p=0.0102). Conclusion: Endosequence BC showed a superior seal and less microleakage compared to the two other sealers used in this study using a single cone guttapercha obturation technique.
International Arab Journal of Dentistry, 2014
An in vitro study was carried out to compare the apical leakage of root canals obturated with different techniques: Nd:YAG laser softened gutta-percha, cold lateral condensation and warm vertical condensation, and to evaluate the leakage of root fillings. Sixty human premolars (with single patent canal) were submitted to instrumentation by means of the step-back technique. The teeth were randomly divided into three experimental groups according to the obturation technique. The first group (n=20) was obturated by Nd:YAG laser softened gutta-percha, the second group (n=20) by cold lateral condensation and the third group (n=20) was obturated using the warm vertical condensation. Each group was divided into two equal subgroups depending on the type of sealer (AH 26® or Dorifill). Afterwards teeth received an impermeable coating on the external surfaces of the crown and root (except for the area nearby the apical foramen). After obturation, the access cavities were sealed and the teeth were immersed in aqueous 1% methylene blue dye for 7 days at 37ºC. After that, the teeth were longitudinally sectioned and the apical leakage was evaluated using a stereomicroscope. The warm vertical condensation presented the best apical sealing ability, followed by Nd:YAG laser and the lateral condensation technique. The statistical analysis of the apical leakage values showed no statistically significant differences between AH ®26 and Dorifill in leakage rate.
PubMed, 2007
Aim: To compare the apical sealing in mesio-buccal canals of extracted molars obturated with low-temperature thermoplasticized gutta-percha or cold lateral condensation techniques using a .06 or a .02 mm/mm tapered gutta-percha master cone. The secondary aim was to evaluate the depth of spreader penetration in root canals using a .06 or a .02 mm/mm tapered gutta-percha master cone. Methodology: Forty-four mesio-buccal curved canals (25-40 degree) were instrumented with .06 nickel-titanium rotary instruments and randomly distributed into two control groups (n=4) and three experimental groups (n=12) for obturation by the Ultrafil 3D system or by cold lateral condensation with .06 or .02 tapered master cone. Canal sealer AH-Plus was used. The depth of spreader penetration was recorded in millimetres. Roots were covered with two layers of nail polish, immersed in India ink for 7 days, transversally sectioned and examined with a stereomicroscope. Student s t test was used to determine whether there was a difference in spreader penetration between groups. Kruskal-Wallis test was used to determine whether there was a difference in leakage. Results: There were no differences among the three groups (p=0.396), which showed a very similar mean microleakage (0.42, 0.75 and 0.42). The difference in spreader penetration between the groups filled by cold lateral condensation was significant (p=0.001) Conclusion: The Ultrafil 3D system and cold lateral condensation techniques with .06 or .02 tapered master cones were equally effective in the apical sealing of curved canals. The spreader penetrated deeper using a .02 mm/mm tapered gutta-percha master cone.