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The effect of different root canal irrigants on the sealing ability of Bioceramic sealer.

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Abstract

The aim of this study was to investigate the effect of different irrigants (EDTA,MTAD, CHX) on the sealing ability of new Bioceramic root canal sealer. Materialand methods: A total of sixty extracted human single-rooted premolar teeth wereused. After instrumentation, teeth were randomly divided into three main groups(n=20) according to the type of final irrigants used. In group (A) 17% EDTA wasused. Group (B) irrigants was MTAD. In group (C) irrigant was 2% CHX. Each maingroup further subdivided into two subgroup (n=10) according to the type of sealerused. Subgroup (1) canals obturated with Bioceramic sealer. In subgroup (2) canalsobturated with AH plus sealer. After incubation period for one week the roots wereplaced in 2% methylene blue dye and kept in incubator for 48 hours then the rootswere cleared, dye penetration measured by stereomicroscopic. Results: statisticalsignificant difference was found between groups (p<0.001). In subgroup (1) BC sealer& CHX showed the lowest mean of leakage in comparing to other type of irrigantswith highly significance difference with BC sealer & EDTA. In subgroup (2) AH Plus& EDTA showed the lowest mean of apical leakage. A highly significance differenceswas found between subgroup (1) and subgroup (2) for all type of irrigants.(p<0.001).Conclusion: when Bioceramic sealer is used in obturation of root canalsystem, it is better to use it in combination with CHX irrigant to improve the apicalseal.Keywords: Endosequence bioceramic sealer, irrigants, apical leakage.


Article
An evaluation of the sealing ability of different obturationand gutta-percha removal techniques (A ComparativeStudy)

Authors: Adel F. Ibraheem عادل فرحان ابراهيم --- Ala' M. M. Ali علاء محمد علي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2011 Volume: 23 Issue: 4 Pages: 7-9
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Removing gutta-percha (GP) during post space preparation is common in dental practice. The aim ofthis study was to compare the effect of using two types of rotary instruments (peeso reamers and Core-Remover) forGP removal on the apical sealing ability of GP in three obturation techniques (lateral condensation, thermafil, andsoftcore) using dye penetration method.Materials and method: Sixty palatal roots of freshly extracted human maxillary first molars were sectioned andprepared with ProTaper manual system in crown-down manner to size F4.. Samples divided randomly into 3 groups(20 roots each) according to the method of obturation; group A: Lateral condensation, group B: Soft-Core andgroup C: Thermafil. All samples received GP removal after 7 days incubation (37˚C and 100% humidity) either usingPeeso reamer (groups A1, B1 and C1) or Core Remover (groups A2, B2 and C2) (10 roots each group). The sampleswere sealed coronally, immersed in Indian ink and incubated for a week. Roots were demineralized with a 5% nitricacid solution, cleared in methyl salicylate and examined using a stereomicroscope under 40X magnification withcalibrated grid to establish the degree of apical dye penetration in millimeters.Results: Data were collected and subjected to descriptive and inferential statistical analysis (ANOVA and t-test) andthere was no significant difference between using peeso reamer and core remover.Conclusion: Apical sealing ability of remaining GP is less affected by the technique of GP removal


Article
Evaluation of three novel retrograde filling materials (Microleakage study)

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Abstract

The aim of this study was to compare apical microleakage of MTA followingreverse retrograde root filling with that following Alumina Cement, Light Cement,Zenium HMP retrofilling. The root canals of 42 extracted teeth were instrumented andobturated with vertically condensed gutta-percha. Each tooth was apically resectedand the apex was prepared by fissure bur to 2 mm depth and the root surface isolatedwith nail varnish. Teeth were divided randomly into four groups of 10 teeth each.First group was retrofilled with MTA, second group with Alumina Cement, thirdgroup with Light Cement, and the fourth group with Zenium HMP. Followingimmersion in 2% Fuchsine dye for 72 hours, the roots were sectioned and the depth ofdye penetration was evaluated by a Global stereomicroscope at x70 magnification.Thesealing effectiveness of the retrograde filling materials was determined by their abilityto inhibit dye penetration. Results showed that the least leakage for zeniuum HMPcement with a mean of 0.6, MTA with a mean of 1.0, light cement with a mean of1.10, alumina cement with a mean of 1.50 with the most leakage. However, thesedifferences were not seen to be statistically significant using the Kruskal Wallis Testor the Mann Whitney Test. It was concluded that Zenium HMP cement provides abetter seal than MTA and Light Cement and Alumina Cement when used asretrograde filling.


Article
Comparison of apical sealability of three obturation techniques (an in vitro study)

Authors: Dr. Montadher S. Kubba, B.D.S., M.Sc. د. منتظر كبة --- Prof. Dr. Jamal Aziz Mehdi, B.D.S., M.Sc. د. جمال عزيز مهدي
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2012 Volume: 9 Issue: 2 Pages: 130-136
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The aim of this study was to evaluate the sealing ability and the time required tocomplete obturationof three different obturation techniques.The palatal roots of sixtymaxillary first molar teeth were selectedfor this study. The root canals prepared usingProFile rotary instruments to an apical dimension of size 40 (.06 taper). Thespecimenswere then randomly divided into 3 experimental groups (20 sample of each) and filledwith gutta-percha and sealer byusing either cold lateral compaction, Thermafil, or theEasy & Quick Master system.For the first parameter(Time of obturation), the resultsshowed that Thermafil technique required the least time to complete obturation and itwas significantly lower than other twogroups.The second measurement(Microleakage) showed that the lateral condensation technique leaked apically andsignificantly higher than other test groups, while the Thermafil group exhibited theleast value of apical microleakage.The aim of this study was to evaluate the sealing ability and the time required tocomplete obturationof three different obturation techniques.The palatal roots of sixtymaxillary first molar teeth were selectedfor this study. The root canals prepared usingProFile rotary instruments to an apical dimension of size 40 (.06 taper). Thespecimenswere then randomly divided into 3 experimental groups (20 sample of each) and filledwith gutta-percha and sealer byusing either cold lateral compaction, Thermafil, or theEasy & Quick Master system.For the first parameter(Time of obturation), the resultsshowed that Thermafil technique required the least time to complete obturation and itwas significantly lower than other twogroups.The second measurement(Microleakage) showed that the lateral condensation technique leaked apically andsignificantly higher than other test groups, while the Thermafil group exhibited theleast value of apical microleakage.

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