Evaluation of Manual and Two-Rotary Niti Retreatment Systems in Removing Gutta-Percha Obturated with Two Root Canal Sealers

Objective. The objective of this study was to evaluate the efficacy of two retreatment NiTi systems (protaper universal retreatment files, R-Endo), when compared to manual technique in removing Gutta-percha obturated with two sealers. Study Design. Sixty extracted single-rooted premolars were instrumented with Protaper rotary files till F3. The specimens were divided into six groups. Groups 1, 2, 3 were obturated with Gutta-percha and zinc oxide eugenol and Groups 4, 5, 6 were obturated with Gutta-percha and AH-plus. The retreatment was carried out in groups 1 and 4 with H-files and GGdrills, groups 2 and 5 with R-endo retreatment files and groups 3 and 6 with Protaper retreatment files. The roots were sectioned and evaluated under optical stereomicroscope. Statistical analysis was performed with one-way ANOVA and Newman-Keul's test at . Results. The manual technique resulted in cleaner canal walls when compared with both rotary retreatment systems. Conclusion. NiTi rotary retreatment files can be used to remove the filling material quickly, but it should be followed by hand instruments to obtain better canal wall cleanliness.

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Sealing Ability of AH Plus and GuttaFlow Bioseal

Bioinorganic Chemistry and Applications ◽

10.1155/2020/8892561 ◽

2020 ◽

Vol 2020 ◽

pp. 1-8

Author(s):

Soo-Hyuk Lee ◽

Soram Oh ◽

Adel Saeed Al-Ghamdi ◽

Ayman Omar Mandorah ◽

Kee-Yeon Kum ◽

...

Keyword(s):

Fluid Flow ◽

Root Canal ◽

Glass Ceramics ◽

Filling Material ◽

Root Canal Filling ◽

Measuring Device ◽

Gutta Percha ◽

Sealing Ability ◽

Ah Plus ◽

The Mean

The objective of root canal obturation is to achieve a fluid-tight seal. Recently, GuttaFlow bioseal (GB), a root canal sealer composed of polydimethylsiloxane, gutta-percha particles, and bioactive glass ceramics, has been developed, to enhance the sealing ability of root canal filling material. The objective of this study was to assess the sealing ability of GB using a subnanoliter-scaled fluid-flow measuring device and to compare with that of AH Plus (AH). The fluid flow in root canal-filled teeth using either gutta-percha cone (GP) with AH (GAR; n = 10) or GP with GB (GBR; n = 10) and in GP inserted in AH blocks (GA; n = 10) or GP inserted in GB blocks (GB; n = 10) was measured. In addition, fluid flow in sealer blocks of AH (A; n = 10) and GB (B; n = 10), which served as negative controls, was measured. Root canal-filled teeth using GP without any sealer (GR) acted as positive controls (n = 10). The leakage was obtained by calculating the volume of moved water by time (s), after stabilization of the fluid flow was achieved. Statistical analysis was performed using the Kruskal–Wallis test and Mann–Whitney U-test with Bonferroni correction. A p value less than 0.00238 (0.05/21) was considered significantly different. The mean leakages (nL/s) in the groups are as follows: GAR, 0.0958 ± 0.0543; GBR, 0.0223 ± 0.0246; GA, 0.0644 ± 0.0803; GB, 0.0267 ± 0.0182; A, 0.0055 ± 0.0057; B, 0.0052 ± 0.005; and GR, 0.2892 ± 0.3018. The mean leakage in the GBR group was lower than that in the GAR group (p = 0.001), while the mean leakages in the GA and GB groups were not significantly different. GuttaFlow bioseal can be useful in single-cone obturation technique.

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Long Term Results Regarding the Clinical Applicability of Two Root Canal Sealers

Materiale Plastice ◽

10.37358/mp.17.2.4840 ◽

2017 ◽

Vol 54 (2) ◽

pp. 308-311

Author(s):

Oana Andreea Diaconu ◽

Ionela Teodora Dascalu ◽

Marina Amarascu ◽

Horia Octavian Manolea ◽

Radu Rica ◽

...

Keyword(s):

Chemical Composition ◽

Root Canal ◽

Long Term Results ◽

Filling Material ◽

Clinical Protocol ◽

Clinical Applicability ◽

Ah Plus ◽

Endodontic Disease ◽

Root Canal Sealers

The aim of this study was the evaluation of the long term results in the clinical applicability of two root canal sealers, Sealapex Xpress - Kerr Endodontics (non-eugenol, calcium hydroxide polymeric root canal sealant) and AH Plus Jet - Dentsply Maillefer (epoxy resin-based sealant). 225 teeth of 159 patients included in this study, were endodontic treated and filled with the previously mentioned root canal sealers, in accordance with a standard clinical protocol. The long term results regarding the evaluation of the used two root sealers were realized clinically and radiologically, after annually monitoring conducted during three years. Long-term results of the study showed that, although their different chemical composition, the two root filling material showed good results in the treatment of various types of endodontic disease.

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COMPARATIVE RADIOGRAPHIC ASSESSMENT OF A NEW BIOCERAMIC-BASED ROOT CANAL SEALER

Medicine and Pharmacy Reports ◽

10.15386/cjmed-714 ◽

2017 ◽

Vol 90 (2) ◽

pp. 226-230 ◽

Cited By ~ 1

Author(s):

Dana Hrab ◽

Andrea Maria Chisnoiu ◽

Mindra Eugenia Badea ◽

Marioara Moldovan ◽

Radu Marcel Chisnoiu

Keyword(s):

Statistical Analysis ◽

Computer Analysis ◽

Root Canal ◽

Filling Material ◽

Root Canal Sealer ◽

Radiographic Assessment ◽

Equivalent Thickness ◽

Analysis Of The Images ◽

Root Canal Sealers ◽

Disk Sample

Background and aims. The aim of this study was to assess the radiopacity of two bioceramic-based root canal sealers, the conventional TotalFill BC sealer (FKG Dentaire Switzerland) and a new experimental filling material developed in collaboration with 'Raluca Ripan' Institute for Research in Chemistry, Cluj-Napoca. Methods. Five disc samples were prepared using both materials (10 mm diameter x 1 mm thickness), being subjected to digital radiography together with aluminum step wedges (1 to 12 mm in thickness), in accordance with ISO 6876: 2012. Radiopacity was determined by the computer analysis of the images obtained. Four different areas were selected for each sample, corresponding to a disk-sample quadrant. Statistical analysis was performed using ANOVA.Results. Both materials showed a radiopacity that was 3 mm greater than the equivalent thickness of aluminum. Total Fill BC showed greater radiopacity than the experimental material, but the differences were not statistically significant. Conclusions. Both materials comply with ISO 6876: 2012 recommendations on minimum radiopacity.

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Efficacy of an Organic Solvent and Ultrasound for Filling Material Removal

Brazilian Dental Journal ◽

10.1590/0103-6440201302252 ◽

2013 ◽

Vol 24 (6) ◽

pp. 585-590 ◽

Cited By ~ 3

Author(s):

Gabriela Guardiola Muller ◽

Anielle Pinheiro Schonhofen ◽

Patricia Maria Poli Kopper Mora ◽

Fabiana Soares Grecca ◽

Marcus Vinicius Reis So ◽

...

Keyword(s):

Root Canal ◽

Filling Material ◽

Control Groups ◽

Passive Ultrasonic Irrigation ◽

Universal System ◽

Gutta Percha ◽

Ah Plus ◽

Ultrasonic Irrigation ◽

Post Hoc ◽

Endodontic Retreatment

The aim of this study was to investigate whether a final rinse with Endosolv R® solvent and ultrasound resulted in cleaner root canal walls during endodontic retreatment. A total of 56 extracted premolar teeth were manually instrumented using a step-back flare technique and filled with gutta-percha and AH Plus sealer. After 9 months, the canals were retreated by removing the gutta-percha and sealer with ProTaper Universal Retreatment and rotary preparation with ProTaper Universal System up to an F5 file. As a final step, the teeth were randomly divided in 4 groups (n=14) and were subjected to passive ultrasonic irrigation (PUI) with either Endosolv R or distilled water. In the control groups, the irrigants were left undisturbed. Roots were cleaved and examined under scanning electron microscopy (SEM), and the amount of filling remnants on the canal walls was assessed by two calibrated examiners in a blinded fashion. Data were analyzed by the Kruskal-Wallis test and the Student-Newman-Keuls post hoc test (α=0.05). All groups presented filling debris in the three root canal thirds after retreatment. There were no significant differences between the groups or among the root canal thirds within each group (p>0.05). PUI with Endosolv R was not effective in the removal of filling debris from root canal walls.

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Efficacy of Removing Thermafil and GuttaCore from Straight Root Canal Systems Using a Novel Non-Surgical Root Canal Re-Treatment System: A Micro-Computed Tomography Analysis

Journal of Clinical Medicine ◽

10.3390/jcm10061266 ◽

2021 ◽

Vol 10 (6) ◽

pp. 1266

Author(s):

Vicente Faus-Llácer ◽

Rubén Pérez ◽

Ignacio Faus-Matoses ◽

Celia Ruiz-Sánchez ◽

Álvaro Zubizarreta-Macho ◽

...

Keyword(s):

Root Canal ◽

Treatment System ◽

Filling Material ◽

Micro Computed Tomography ◽

Root Canal Filling ◽

Filling Materials ◽

Gutta Percha ◽

Ct Analysis ◽

Canal Systems ◽

Ah Plus

The present study aims to evaluate the effectiveness of an XP-endo non-surgical root canal re-treatment system in removing both GuttaCore and Thermafil gutta-percha carrier-based root canal filling materials from straight root canal systems using micro-computed tomography (micro-CT) analysis. The study was performed on 20 single-rooted upper teeth, which were randomly allocated into the following study groups: Group A, Thermafil and AH Plus sealer (n = 10); Group B, GuttaCore and AH Plus sealer (n = 10). Before and after the non-surgical root canal re-treatment procedure, the samples were submitted for a micro-CT analysis. The volume of the root canal filling material (mm3), the volume of the remaining root canal filling material (mm3) and the time (minutes) needed to remove the root canal filling material were also recorded. Student’s t-test was used to analyze the results. No statistically significant differences were found between the volume of the remaining root canal filling material in the GuttaCore and Thermafil root canal filling systems at the coronal third (p = 0.782), middle third (p = 0.838) or apical third (p = 0.882) of the straight root canal systems; however, the GuttaCore required a statistically significant (p = 0.037) shorter amount of time (4.72 ± 0.76 min) to be removed than the Thermafil carrier-based root canal filling material (5.92 ± 1.42 min). The XP-endo Finisher non-surgical endodontic re-treatment system removes both GuttaCore and Thermafil gutta-percha carrier-based root canal filling materials from straight root canal systems, although removal of the GuttaCore gutta-percha carrier-based root canal filling material required less time.

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ProTaper retreatment system versus balanced force technique for apical extrusion and gutta-percha removal

International Dental Research ◽

10.5577/intdentres.2019.vol9.no2.5 ◽

2019 ◽

Vol 9 (2) ◽

pp. 63-68

Author(s):

Esma Sarıçam ◽

Bülent Altunkaynak ◽

Güven Kayaoğlu

Keyword(s):

Root Canal ◽

Native Speakers ◽

Primary Root ◽

Filling Material ◽

Canal Wall ◽

Root Canals ◽

Gutta Percha ◽

System Versus ◽

Apical Extrusion ◽

Native Speakers Of English

Introduction: The aim was to compare root canal wall cleanliness, amounts of apically extruded debris and irrigant during retreatment using the ProTaper Universal Retreatment (PT) system or balanced force technique (BFT). Materials and Methods: Root canals of extracted mandibular premolar teeth (n=44) were endodontically prepared and obturated, then the teeth were divided into two groups: BFT and PT. Apically extruded material was collected into preweighed Eppendorf tubes using the Myers and Montgomery method. The root halves were photographed under a stereomicroscope. Area of the remnant filling material (coronal, middle, apical thirds and total canal surface) was measured by software. Data were analyzed by Mann-Whitney U test. Results: The BFT and PT system provided similar degrees of canal wall cleanliness (p > 0.05) and amounts of extruded irrigant (p>0.05). The PT system caused less debris extrusion (p<0.05). Conclusions: Although the BFT was shown to cause less apical extrusion in primary root canal treatment compared to other manual instrumentation techniques, in the present study, BFT caused more debris extrusion than the PT group. How to cite this article: Sarıçam E, Altunkaynak B, Kayaoğlu G. ProTaper Retreatment system versus balanced force technique for apical extrusion and gutta-percha removal. Int Dent Res 2019;9(2):63-8. Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

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An in vitro study on the effects of serum proteins on Enterococcus faecalis adhesion to three types of root sealers and gutta-percha

BMC Oral Health ◽

10.1186/s12903-021-01992-4 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Xinwei Lin ◽

Danlu Chi ◽

Qimei Gong ◽

Zhongchun Tong

Keyword(s):

Epoxy Resin ◽

Calcium Hydroxide ◽

Enterococcus Faecalis ◽

Root Canal ◽

Serum Proteins ◽

Laser Scanning Microscopy ◽

Root Canal Sealer ◽

Gutta Percha ◽

Ah Plus ◽

Root Canal Sealers

Abstract Background The extrusion of overfilled materials that extend beyond the apical foramina into the periradicular tissue may serve as a reservoir for bacterial adhesion and further affect recovery from periapical diseases. The aim of this study was to evaluate the effects of serum proteins on Enterococcus faecalis adhesion and survival on the surface of a calcium hydroxide-based root canal sealer (Apexit Plus), an epoxy resin sealer (AH-Plus) and a bioceramic sealer (iRoot SP). Methods Apexit Plus, AH-Plus and iRoot SP were evenly coated on gutta-percha, using gutta-percha alone as the control. After root canal sealer setting, the number of E. faecalis adhering to the root canal sealers and gutta-percha was counted in fetal bovine serum (FBS) or tryptic soy broth supplemented with 1% glucose (TSBG) by viable cell plate counts. The morphology of 7-day-old E. faecalis biofilms in FSB and TSBG was observed by scanning electron microscopy (SEM). Furthermore, E. faecalis biofilms on the three root canal sealers were labeled with a LIVE/DEAD BacLight™ Bacterial Viability Kit, and the ratios of viable to dead cells were analyzed using laser scanning microscopy operative software (Zen software). Results In the assays, after 1 and 7 days, the number of E. faecalis adhering to the root canal sealers or gutta-percha in FBS were significantly lower than those in TSBG (P < 0.05). In FBS, E. faecalis adhesion to iRoot SP and gutta-percha was reduced to a greater extent than that adhered to Apexit Plus and AH-Plus. Few E. faecalis accumulated on iRoot SP in FBS, whereas many bacteria assembled on iRoot SP and formed biofilms in TSBG. The ratio of viable cells in the E. faecalis biofilm on iRoot SP was the lowest. Conclusions Calcium hydroxide-based root canal sealers, epoxy resin sealers and bioceramic sealers may provide a substrate for E. faecalis adhesion, and the bioceramic sealer in this study showed the least E. faecalis adhesion in the presence of serum proteins compared to the other two sealers.

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Perbandingan sitotoksisitas Endomethasone, AH Plus, dan Apexit Plus terhadap sel fibroblas dengan teknik root dipping

Journal of Dentomaxillofacial Science ◽

10.15562/jdmfs.v7i2.196 ◽

2008 ◽

Vol 7 (2) ◽

pp. 69

Author(s):

Christine A. Rovani ◽

Kamizar Kamizar ◽

Munyati Usman

Keyword(s):

Root Canal ◽

Gutta Percha ◽

Significant Difference ◽

Ah Plus ◽

Chicken Fibroblast ◽

Root Canal Sealers

The purpose of this study was to evaluate the lowest cytotoxicity of three endodonticsealers, Apexit Plus, AH Plus and Endomethasone that can be used safely. The crownof 30 intact lower premolars were removed at cementodentinal juntion and the teethwere prepared with crown down technique with # 20 initial file and # 30 masterapical file. After sterilization, the 30 teeth were randomly divided into three groupsand filled with gutta percha using laterally condensation technique and Apexit Plus,AH Plus, and Endomethasone as sealers. Apex of the roots was dipped 1.5 mm intoculture medium for 24 hours in incubator (root dipping technique). The mediumcontact was transformed into confluent chicken fibroblast. Cytotoxicity ofEndomethasone, AH Plus, and Apexit Plus were measured with hemocytometer assay.The results showed that percentage survived cells of Apexit Plus was 68%,Endomethasone 66.42%, and AH Plus 64%. The amount of exist cells were ApexitPlus>Endomethasone>AH Plus. There was no significant difference of cytotoxicityamong the sealers (P>0.05). The conclusion was the amount of exist cells were morethan 50% which means that the three root canal sealers were not toxic.

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Efficacy of several rotary systems in removal of two different obturation materials during endodontic retreatment

Vojnosanitetski pregled ◽

10.2298/vsp170925183p ◽

2019 ◽

Vol 76 (9) ◽

pp. 880-886

Author(s):

Dragana Pesic ◽

Irena Melih ◽

Veljko Kolak ◽

Ana Nikitovic ◽

Marija Lalovic ◽

...

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Root Canal ◽

Surface Profile ◽

Filling Material ◽

Gutta Percha ◽

Debris Removal ◽

Ah Plus ◽

Endodontic Retreatment ◽

Scanning Electron

Background/Aim. In order to achieve good results in endodontic retreatment, satisfactory removal of filling material and adequate debridement of the root canal is necessary. The aim of this in vitro study was to evaluate the efficacy of three rotary systems in removing gutta-percha/AH Plus and RealSeal SE obturation materials during retreatment using scanning electron microscopy. Methods. A total of 72 freshly extracted mandibular first incisors were enlarged to a size #30 using iRaCe NiTi instruments. Teeth were randomly divided into 6 groups of 12 specimens each. 36 teeth (groups 1, 2 and 3) were filled with AH Plus?/gutta-percha and another 36 (groups 4, 5 and 6) with Resilon (RealSeal SE system), both using lateral condensation technique. In groups 1 and 4, the retreatment was performed using the ProFile System, in groups 2 and 5 using the ProTaper Universal Retreatment System and in groups 3 and 6 using the D-RaCe system. After retreatment the teeth were split vertically into halves and efficacy of retreatment techniques was evaluated by scanning electron microscopy. The assessment and comparisons of 3 parameters: smear layer, filling debris and surface profile irregularities were made using a predefined scale. These 3 parameters were evaluated in the coronal, middle and apical thirds of the root. Statistical analysis was performed using the Kruskal-Wallis test with the Bonferroni post-hoc test. Results. In the AH Plus/gutta-percha samples filling debris removal was significantly better when the D-RaCe and ProTaper System were used compared to the ProFile in the apical third. Less dentin irregularities were observed when the ProTaper was used compared to the ProFile system (p = 0.0139). In the RealSeal samples, no significant differences were found between the retreatment methods. Conclusion. None of the instrumentation technique completely removed filling material from the root canal, which implies the need for more research in this field. The apical third of the root canal was the most complicated area in terms of complete smear layer and filling debris removal and presence of surface profile irregularities regardless the filling materials.

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Evaluation of apical microleakage of teeth sealed with four different root canal sealers

Journal of Applied Oral Science ◽

10.1590/s1678-77572006000500008 ◽

2006 ◽

Vol 14 (5) ◽

pp. 341-345 ◽

Cited By ~ 15

Author(s):

Fábio Dultra ◽

Juliana Machado Barroso ◽

Laise Daniela Carrasco ◽

Alexandre Capelli ◽

Danilo M. Zanello Guerisoli ◽

...

Keyword(s):

Root Canal ◽

Methyl Salicylate ◽

The Other ◽

Root Canal Sealer ◽

Root Canals ◽

Dye Penetration ◽

Gutta Percha ◽

India Ink ◽

Ah Plus ◽

Root Canal Sealers

OBJECTIVES: to compare the apical sealing ability of four root canal sealers. MATERIAL AND METHODS: forty extracted human maxillary canines were instrumented 1 mm short of the anatomical apex and randomly assigned to four groups (n=10), according to the root canal sealer used for obturation: Endofill, AH Plus, EndoREZ and Epiphany. Root canals were obturated with gutta-percha points, except for the Epiphany group, in which resin points (Resilon) were used. The teeth were immersed in India ink for seven days and clarified using methyl salicylate. The extent of apical dye penetration was measured with a measuroscope in all aspects of the canal. RESULTS: AH Plus (0.02 mm ± 0.07), Epiphany (0.00 mm ± 0.00) and EndoREZ (0.32 mm ± 0.62) did not differ statistically to each other (p>0.01). EndoFill presented the highest dye penetration mean (0.83 mm ± 0.73) and was statistically different from the other sealers (p<0.01). CONCLUSION: the resin-based root canal sealers presented lesser apical microleakage than the zinc oxide and eugenol based sealer. No statistical differences were observed among resin based sealers.

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