Physicochemical Properties of Root Canal Filling Materials for Primary Teeth

Silva, Léa Assed Bezerra da; Pucinelli, Carolina Maschietto; Ferreira, Danielly Cunha Araújo; Daldegan, Andiara De Rossi; Silva, Roberto Santana da; Filho, Paulo Nelson; Silva, Léa Assed Bezerra

doi:10.1590/0103-6440201600206

Cited by 14 publications

(12 citation statements)

References 18 publications

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“…Four endodontic materials were tested: Group I, experimental MTA-based material, composed by ester glycol salicylate, titanium dioxide, calcium tungstate, silicone dioxide, toluene sulfonamide and 30% calcium silicate (Angelus, Londrina, PR, Brazil); Group II, zinc oxide eugenol cement (ZOE) (S.S.White Artigos Dentários Ltda., Rio de Janeiro, RJ, Brazil); Group III, a premixed calcium hydroxide and iodoform paste (Vitapex) (Neo Dental International Inc., Federal Way, WA, USA); Group IV, 1.0 g of a commercial calcium hydroxide and polyethylene glycol-based paste (Calen) (S.S.White, Rio de Janeiro, RJ, Brazil) thickened with 1.0 g zinc oxide (Biodinâmica Química e Farmacêutica Ltda., Ibiporã, PR, Brazil) (5,6).…”

Section: Methodsmentioning

confidence: 99%

“…Some studies have also suggested the use of calcium hydroxide associated to zinc oxide, as well as calcium hydroxide and iodoform, in order to improve the chances of success in root canal therapy of primary teeth (1,5). Iodoform pastes have better resorbability than ZOE has, and are less likely to cause a foreign body reaction.…”

Section: Introductionmentioning

confidence: 99%

“…It is important to highlight that the use of a filling material with all requirements would improve the outcome of post-endodontic treatment in primary teeth (5). This study was undertaken to evaluate the radiopacity, pH, antimicrobial capacity, cytotoxicity and biocompatibility of an experimental MTA-based material in comparison to other endodontic filling materials commonly used for primary teeth.…”

Section: Introductionmentioning

confidence: 99%

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Physicochemical and Biological Evaluation of Endodontic Filling Materials for Primary Teeth

et al. 2017

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This study assessed the pH, radiopacity, antimicrobial effect, cytotoxicity and biocompatibility of endodontic filling materials for primary teeth. Zinc oxide eugenol (ZOE), Vitapex and Calen paste thickened with zinc oxide (ZO) were evaluated in comparison to an experimental MTA-based material. Radiopacity was tested using a graduated aluminum stepwedge with a digital sensor (n=5). The materials pH was recorded at 1, 4, 12 h; 1, 3, 7, 15 and 30 days (n=5). Direct contact test was used to assess the antimicrobial efficacy against Enterococcus faecalis after 1, 4, 12, 24 h (n=5). Cytotoxicity assay used MTT test for cell viability after incubation for 1, 3 and 7 days (n=5). For biocompatibility test, Wistar rats had received implants containing each material (n=5). The biopsied tissues were histologically analyzed after 15, 30 and 60 days. The results of radiopacity, pH, antimicrobial capacity and cytotoxicity were analyzed using ANOVA and Tukey tests. The histological data were submitted to Kruskal-Wallis test. The experimental material presented the lowest radiopacity (3.28 mm Al) and had a pH>12.0 throughout the test period. The experimental material showed the highest antibacterial effect, killing over 99.97% bacteria in 4 h. Vitapex presented the highest cell viability. Initially, biocompatibility test showed moderate to severe inflammation in all groups. After 60 days, Calen+ZO group showed moderate inflammation, while the others showed predominantly mild inflammatory reaction. The present results demonstrated that the experimental MTA-based material exhibited satisfactory behavior regarding the studied properties. Additional in vivo studies are necessary for a better evaluation of the material. Physicochemical and Biological Evaluation of Endodontic Filling M a t e r i a l s f o r P r i m a r y Te e t h

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Physicochemical and Biological Evaluation of Endodontic Filling Materials for Primary Teeth

et al. 2017

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“…We found that in the calcium hydroxide-zinc oxide mixture, by increasing the ratio of calcium hydroxide to zinc oxide up to 2 to 1, the antibacterial properties increased, however after this increase the antibacterial properties stabilizes. According to the study by Segato et al (22), a ratio of 2:1 of the calcium hydroxide-zinc oxide paste has the highest alkaline characteristic and the most appropriate physicochemical properties and this characteristic (alkaline) is among the most important determinants of antibacterial effects (20, 21). One can conclude that at this ratio the highest alkaline property is obtained and higher ratios do not render higher alkaline properties, thus showing similar antibacterial effects.…”

Section: Discussionmentioning

confidence: 99%

The antimicrobial effects of zinc oxide-calcium hydroxide mixture fillers: determining the ideal mixture ratio

Nozari¹,

Karimkhani²,

Motamedifar³

et al. 2019

IJM

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Background and Objectives: Although zinc oxide (ZO)-calcium hydroxide (CaOH) mixtures have been successful regard- ing their absorption rate compatibility with dissolving primary teeth, no study has been conducted on the appropriate mixture ratio to obtain effective antibacterial properties. In this study, we compared antibacterial activity of CaOH-ZO pastes using different mixture ratios sagainst Enterococcus faecalis as an important bacterium in root canal treatment failure. Materials and Methods: Seven types of pastes were prepared in our laboratory. The first group included one gram of ZO+eu- genol, second group included one gram of CaOH+distilled water, third group included 0.5gram ZO+0.5gram CaOH+distilled water (1:1), forth group included 0.75gramCaOH+0.25gramZO+distilled water (3:1), the fifth group included 0.33gram of CaOH+0.66gram of ZO+distilled water (1:2), the sixth group included 0.75gram of ZO+0.25 CaOH+distilled water (3:1), the seventh group included 0.66 gram CaOH+0.33 gram ZO+distilled water (2:1), and the final group included one gram of gelatin+distilled water (as the control group). These pastes were compared regarding their antibacterial effects against Enterococcus faecalis using agar diffusion and microdilution methods. Results: Except for the control group, all prepared pastes showed antibacterial properties. Order of minimum inhibitory concentration for pastes were as followed: CaOH-ZO (1:3)=CaOH-ZO (1:2)>CaOH-ZO (1:1)>CaOH-ZO (3:1)=CaOH-ZO (2:1)>CaOH=ZO-eugenol. Order of minimum bactericidal concentration, which shows a weaker bactericidal effect, accord- ing to type of paste, were as followed: CaOH-ZO (1:3)>CaOH-ZO mixture (1:2)>CaOH-ZO mixture (1:1)>CaOH-ZO mix- ture (3:1)=CaOH-ZO (2:1)>CaOH=ZO-eugenol. Only CaOH-ZO (1:3) and CaOH-ZO (1:2), showed significantly weaker MICs and MBCs (p < 0.001). Conclusion: Considering the limitations of an in-vitro study, in terms of anti-bacterial effects against Enterococcus faecalis, CaOH-ZO mixture (2:1) is equivalent to ZO-eugenol as the most commonly used material in polypectomy of primary teeth.

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“…Although revised in 2012, ANSI/ADA #57 specification (1) does not provide parameters for the use of more sensitive digital receptors and software for measuring radiopacity as pixel intensity, which is the reality of modern radiology. However, the use of the aluminum scale, X-rayed along with the specimen (8)(9)(10)(11)(12)(13)(14), is intended to expose both objects to the same parameters.…”

Section: Discussionmentioning

confidence: 99%

Radiopacity Evaluation of Gutta-Percha Points in Thinner Samples than the ANSI/ADA Recommendation

et al. 2017

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The aim of this study was to evaluate the radiopacity of different gutta-percha points (Endo Points®, Dentsply®, Tanari®, Meta®, Roeko® and Odous®) in samples of 1 mm thick as established by ANSI/ADA Specification #57 and ISO 6876/2001, in comparison with thinner samples. Twelve test specimens for each material, four for each thickness (0.3, 0.6, and 1 mm and diameter of 8 mm), were laminated and compressed between two polished glass plates until the desirable thickness. Digital radiographs were obtained along with a graduated aluminum stepwedge varying from 1 to 10 mm in thickness. The X-ray unit was set at 70 kVp, 10 mA and 0.4 s exposure time, at a focal distance of 36 cm. One calibrated observer quantified the average values of pixels with Adobe Photoshop® software. Data were analyzed using ANOVA and Tukey tests, at 5% significance level. At 0.6 and 1 mm thickness, all the tested materials showed radiopacity higher than 3 mm of aluminum (reference value). At 0.3 mm thickness, Odous and Tanari presented significantly less radiopacity than the reference, and the other materials showed similar radiopacity to the reference. The study concluded that the materials demonstrated different radiopacities and all had values above the minimum recommended by ANSI/ADA specification #57, being Odous and Tanari less radiopaque than the reference value in thinner samples (0.3mm).

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Physicochemical Properties of Root Canal Filling Materials for Primary Teeth

Cited by 14 publications

References 18 publications

Physicochemical and Biological Evaluation of Endodontic Filling Materials for Primary Teeth

Physicochemical and Biological Evaluation of Endodontic Filling Materials for Primary Teeth

The antimicrobial effects of zinc oxide-calcium hydroxide mixture fillers: determining the ideal mixture ratio

Radiopacity Evaluation of Gutta-Percha Points in Thinner Samples than the ANSI/ADA Recommendation

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