The influence of different radiopacifying agents on the radiopacity, compressive strength, setting time, and porosity of Portland cement

Antonijevic, Djordje; Medigović, Ivana; Zrilić, Milorad; Jokić, Bojan; Vuković, Ž.; Todorović, Ljubomir

doi:10.1007/s00784-013-1130-0

Cited by 37 publications

(42 citation statements)

References 32 publications

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“…Camilleri et al [14] found that the hydration of PC with the addition of 30 % ZrO 2 resulted in an increase in pH, calcium ion release, and bioactive potential. Antonijevic et al [15] found that ZrO 2 could be used as a substitute for Bi 2 O 3 in MTA, because this radiopacifier does not alter the physical properties of MTA. Moreover, according to Liu et al [11], the use of ZrO 2 in nanoparticle form in bone cements has demonstrated bioactivity and cytocompatibility.…”

Section: Introductionmentioning

confidence: 98%

Physicochemical properties of calcium silicate cements associated with microparticulate and nanoparticulate radiopacifiers

et al. 2015

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Section: Introductionmentioning

confidence: 98%

Physicochemical properties of calcium silicate cements associated with microparticulate and nanoparticulate radiopacifiers

et al. 2015

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“…However, MTA contains bismuth oxide, which is a factor that must be taken into consideration when using this cement as a root-end filling material. Bismuth oxide is added to MTA for radiopacity, but in the long term it can cause changes in the cement, resulting in increased porosity and decreased mechanical resistance 14,15,24,25 .…”

Section: Discussionmentioning

confidence: 99%

“…The absence of additives may affect the mechanical strength of the material 13 . Also, bismuth oxide is added to MTA for radiopacity, but it can result in increased porosity and decreased resistance in the long term 14,15 .…”

Section: Introductionmentioning

confidence: 99%

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The use of a biocompatible cement in endodontic surgery. A randomized clinical trial 1

et al. 2016

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PURPOSE:To evaluate the clinical applicability of Pozzolana Biologic Silva cement (PBS ® ) in endodontic surgery. METHODS:Persistent apical periodontitis was diagnosed in 30 teeth of 12 patients by cone-beam computed tomography (CT). All patients had 2 or 4 affected teeth and underwent endodontic surgery with root-end filling. Patients with 2 affected teeth had one tooth (control) treated with mineral trioxide aggregate (MTA-Angelus ® ) as a root-end filling material, and the other tooth treated with PBS (experiment). When the patient had four affected teeth, two of them were treated with MTA and two with PBS. Six months after surgery, all patients were assessed by CT scan. Between-group comparisons of measurements were performed using the Wilcoxon test. RESULTS:Periradicular tissue regeneration was observed in all cases. Significant within-group differences in long axes of the lesion were found in the bucco-palatal direction (PBS group, p=0.0012; MTA group, p=0.024) and coronal-apical direction (PBS group, p=0.0007; MTA group, p=0.0015) between pre-and postoperative measurements. CONCLUSIONS:Pozzolana Biologic Silva cement can be used in the treatment of persistent periradicular lesions. The clinical use of PBS as a root-end filling material may be an alternative to MTA. PBS has additives, which provide enhanced strength.

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“…Além disso, este radiopacificador pode interferir negativamente na porosidade e na resistência à compressão do cimento Portland 21 .…”

Section: Introductionunclassified

Análise físico-química do MTA e do cimento Portland associado a quatro diferentes radiopacificadores

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et al. 2014

Rev. odontol. UNESP

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ResumoIntrodução: O Mineral Trióxido Agregado (MTA) é composto por cimento Portland (CP) e um radiopacificador (óxido de bismuto). Objetivo: Avaliar tempo de presa, solubilidade, pH, liberação de íons Cálcio e radiopacidade do cimento Portland puro ou associado a quatro radiopacificadores (sulfato de bário, carbonato de bismuto, óxido de bismuto e iodofórmio), comparados ao MTA branco (Angelus, Londrina, Brasil). Material e método: A proporção empregada CP/radiopacificador foi de 4:1 em peso, (80% de cimento Portland e 20% de radiopacificador Descritores: Mineral trióxido agregado; obturação retrógrada; materiais retrobturadores. AbstractIntroduction: Mineral Trioxide Aggregate (MTA) is composed of Portland cement (PC), and a radiopacifier (bismuth oxide). Objective: To evaluate the setting time, solubility, pH, calcium ion release and radiopacity of pure Portland cement and its association to four radiopacifiers, (Barium sulfate, bismuth carbonate, bismuth oxide and iodoform), and White MTA (Angelus, Londrina, Brazil). Material and method: The ratio CP/radiopacifier used was 4:1 by weight (80% Portland cement and 20% radiopacifier). The setting time was evaluated according the specification ADA 57. The solubility was analyzed according to ISO 6876/2001 specification. The pH was evaluated using a digital pHmeter and the release of Ca ++ ions by atomic absorption spectrophotometer. The radiopacity was measured in millimeters of aluminum (mm/Al). The results were submitted to ANOVA and Tukey tests using 5% of significance level. Result: Barium sulfate did not alter the final setting time of the PC. Observed radiopacity was less than the minimum recommended by ADA 57 and ISO 6876/2001 for CP and CP associated with barium sulfate. The PC associated with iodoform showed solubility above the 3% recommended by ISO 6876/2001. All materials provided alkalinization and promoted calcium ion release. Conclusion: Bismuth carbonate and bismuth oxide provided proper initial setting time, solubility, pH, calcium ion release and radiopacity when combined with CP.

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The influence of different radiopacifying agents on the radiopacity, compressive strength, setting time, and porosity of Portland cement

Abstract: ZrO2 and YbF3 may be used as a suitable alternative to replace Bi2O3 in MTA without influencing its physical properties.

Cited by 37 publications

References 32 publications

Physicochemical properties of calcium silicate cements associated with microparticulate and nanoparticulate radiopacifiers

Physicochemical properties of calcium silicate cements associated with microparticulate and nanoparticulate radiopacifiers

The use of a biocompatible cement in endodontic surgery. A randomized clinical trial 1

Análise físico-química do MTA e do cimento Portland associado a quatro diferentes radiopacificadores

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