Apical dentin permeability and microleakage associated with root end resection and retrograde filling

Gilheany, Peter A.; Figdor, David; Tyas, Martin J.

doi:10.1016/s0099-2399(06)80022-1

Cited by 206 publications

(153 citation statements)

References 13 publications

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“…Among the different retrofilling techniques available, the 90 o bevel 3 mm from the apex exposes a lower number of dentinal tubules and provides a more effective removal of root ramifications (13). However, when the root-end cavity is prepared using a bur in a micro-handpiece, access to the canal is easier if the apex is resected at 30 o to 45 o , mainly in the molar region (14).…”

Section: Discussionmentioning

confidence: 99%

Sealing ability of MTA and amalgam in different root-end preparations and resection bevel angles: an in vitro evaluation using marginal dye leakage

et al. 2010

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This in vitro study evaluated the effect of different apicoectomy angles, instruments used in root-end preparation, and dental materials used in retrofilling on apical sealing. Root ends were resected at 45 or 90 degrees in 80 single-rooted teeth. For each type of apicoectomy, root-end cavities were prepared with either a round carbide #2 bur or an S12/90D ultrasonic tip. The root-end cavities in each subgroup (apicoectomy + root-end preparation) were filled with silver amalgam without zinc (Am) or with gray mineral trioxide aggregate -Angelus (MTA), and the specimens were immediately immersed in 0.2% rhodamine B for 24 h. Sealing was evaluated based on the dyed crosssectional dentin area. Data were analyzed statistically by the Kruskal-Wallis test at 5% significance level. No group showed complete sealing of root-end areas. The only significant factor affecting microleakage was dental material, with MTA exhibiting less leakage.

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Section: Discussionmentioning

confidence: 99%

Sealing ability of MTA and amalgam in different root-end preparations and resection bevel angles: an in vitro evaluation using marginal dye leakage

et al. 2010

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“…Gilheany et al (18) reported that the permeability of the resected apical dentin and microleakage around the retrograde filling material had a significant influence on apical leakage. Torabinejad et al (5) reduced the amount of rhodamine B dye penetration through the exposed dentinal tubules by sealing the resected surface with a layer of adhesive.…”

Section: Discussionmentioning

confidence: 99%

In vitro evaluation of apical sealing in root apex treated with demineralization agents and retrofiled with mineral trioxide aggregate through marginal dye leakage

2005

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The purpose of this study was to evaluate the apical seal in root apex treated with different demineralization agents and retrofilled with mineral trioxide aggregate (MTA) using marginal dye leakage. Fifty-six, human single-rooted teeth were instrumented, filled, resected and had retrofilling cavities prepared with ultrasonic tips. Demineralizing agents were applied before the apical cavities were retrofilled with Pro Root MTA. The specimens were assigned to 4 groups (n=14), as follows: group 1 (no demineralizing agent); group 2 (35% phosphoric acid, for 15 s); group 3 (17% EDTA solution, pH 7, for 3 min); and group 4 (24% EDTA gel, pH 7, for 4 min). The extension of dye (2% rhodamine B, at 37°C, for 24 h) penetration was measured in millimeters using a stereomicroscope. Results were statistically analyzed by ANOVA and Tukey's test at 5% significance level. Among the experimental groups, the least extension of dye penetration was observed in group 1 (1.89 mm), followed by groups 2 (2.18 mm), 4 (2.54 mm) and 3 (2.64 mm). No statistically significant differences (p<0.05) were found in marginal microleakage among groups 1, 2 and 4 and groups 2, 3 and 4. Based on the results obtained in this study, it may be concluded that the application of demineralizing agents cannot be recommended when MTA is used in periradicular surgeries.

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“…Torabinejad et al [8] é fundamental, pois quando o cimento endodôntico entra em íntimo contato com os tecidos periapicais ao ser inserido na cavidade dental, lá permanece definitivamente. Segundo Gilheany et al [9] essa íntima ligação com os tecidos periapicais leva a necessidade de que o material seja atóxico e supercompatível com os tecidos vivos, simultaneamente deve impedir a infiltração de microrganismos e subtrato. Derivados desse material surgiram no mercado, no intuito de melhorar as propriedades desse cimento.…”

Section: Cerâmicos Endodônticosunclassified

Avaliação Do Cimento Branco Acrescido De Carbonato De Bismuto Como Um Cimento Reparador Endodôntico

Lima¹,

Silva²,

Nogueira³

2018

ABM Proceedings

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ResumoEste estudo avaliou a influência da adição de um composto inorgânico radiopacificador sobre as propriedades do cimento Portland Branco, a fim de viabilizar sua utilização como cimento endodôntico, semelhante ao MTA. Primeiramente, cimento Portland Branco foi caracterizado por difração de raios-X, os resultados mostram que a amostra possui composição semelhante ao MTA, com exceção de bismuto na composição do material. O bismuto, segundo a literatura, é o agente radiopacificador presente no cimento endodôntico na base de MTA. Posteriormente foi selecionado um composto inorgânico, devido seu potencial radiopacificador para continuação do estudo, sendo este o Carbonato de Bismuto (Bi2(CO3)). Neste estudo foram avaliadas as seguintes propriedades; Tempo de presa inicial, compressão dimensional, solubilidade e alteração diametral, sendo todos os ensaios seguindo de acordo com a norma ISO 6878:2001. Para a realização destes ensaios, foram utilizadas amostras contendo 15% de Carbonato de Bismuto em sua composição. Comparando os resultados obtidos neste estudo, foi verificado de acordo com a literatura, que cimento Portland Branco acrescido de 15% de Carbonato de Bismuto possui propriedades semelhantes às do MTA, sugerindo assim, a viabilidade de sua utilização como alternativa menos onerosa aos demais materiais comercializados. Palavras-chave: Agregado de trióxido mineral; Cimento portland; Bismuto; Radiopacificador. WHITE CEMENT EVALUATION PLUS BISMUTH CARBONATE AS A ROOT CANAL RESTORATIVE CEMENT AbstractThis study evaluated the influence of the addition of an inorganic compound radiopacifier on the properties of the white Portland cement, in order to facilitate its use as cement endodontic, similar to the MTA. First, Portland White cement was characterized by X-ray diffraction; the results show that the sample had similar composition the MTA, with the exception of bismuth in the composition of the material. Bismuth, according to literature, is the radiopacifier agent present in the sealer in the MTA base. Afterwards, an inorganic compound was selected due its potential radiopacifier for further study, which is the carbonate Bismuth (Bi2(CO3)). In this study the following properties were evaluated; Initial setting time, dimensional compression, solubility and diametrical alteration, all following tests according to ISO 6878: 2001. To achieve these tests, samples containing 15% bismuth carbonate in its composition. Comparing the results obtained in this study, it was proved, according to literature, that white Portland cement plus 15 % bismuth carbonate has properties similar to the MTA, suggesting the feasibility of its use as less costly alternative to other marketed materials.

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Apical dentin permeability and microleakage associated with root end resection and retrograde filling

Cited by 206 publications

References 13 publications

Sealing ability of MTA and amalgam in different root-end preparations and resection bevel angles: an in vitro evaluation using marginal dye leakage

Sealing ability of MTA and amalgam in different root-end preparations and resection bevel angles: an in vitro evaluation using marginal dye leakage

In vitro evaluation of apical sealing in root apex treated with demineralization agents and retrofiled with mineral trioxide aggregate through marginal dye leakage

Avaliação Do Cimento Branco Acrescido De Carbonato De Bismuto Como Um Cimento Reparador Endodôntico

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