An evaluation of accelerated Portland cement as a restorative material

Abdullah, Dalia; Ford, T. R. Pitt; Papaioannou, Stelios; Nicholson, John W.; McDonald, Fraser

doi:10.1016/s0142-9612(02)00147-3

Cited by 185 publications

(206 citation statements)

References 18 publications

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“…However, its high cost limits its use. Studies on MTA have demonstrated that its composition is the same as the Portland cement used in construction and that the physical and biological properties of these cements are similar 9,11 . Further studies are necessary to better determine the biological properties of Portland cements.…”

Section: Discussionmentioning

confidence: 99%

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Root perforations treatment using mineral trioxide aggregate and Portland cements

et al. 2010

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Purpose: Clinical, radiological and histological evaluation of root perforations treated with mineral trioxide aggregate (MTA) or Portland cements, and calcium sulfate barrier. Methods: One molar and 11 premolar teeth of a male mongrel dog received endodontic treatment and furcations were perforated with a high-speed round bur and treated with a calcium sulfate barrier. MTA, Portland cement type II (PCII) and type V (PCV), and white Portland cement (WPC) were used as obturation materials. The teeth were restored with composite resin and periapical radiographs were taken. The animal was euthanized 120 days post-surgery for treatment evaluation. RESUMOObjetivo: Avaliar clínica, radiológica e histologicamente perfurações radiculares tratadas com MTA e cimentos Portland, com barreira de sulfato de cálcio. Métodos: A amostra foi constituída por 11 dentes pré-molares e um molar de cão macho, sem raça definida. Após tratamento endodôntico realizaram-se perfurações nas furcas com broca esférica de alta rotação e barreira de sulfato de cálcio. Foram utiliados os cimentos MTA, Portland tipo II (CPII), Portland tipo V (CPV) e Portland branco estrutural (CPB). Os dentes foram restaurados com resina composta e submetidos a radiografias periapicais. O animal foi confinado por 120 dias e submetido à eutanásia para avaliações. Resultados: Primeiro pré-molar inferior direito (MTA), terceiro pré-molar inferior direito (CPV), segundo pré-molar inferior esquerdo (MTA) e segundo pré-molar inferior direito (CPB): clinicamente normal; leve área radiotransparente na furca; pequeno infiltrado inflamatório e neoformação óssea. Terceiro pré-molar inferior esquerdo (CPII), primeiro pré-molar superior direito (CPB), terceiro pré-molar superior direito (CPII) e primeiro molar superior esquerdo (CPV): clinicamente normal; área radiopaca na furca; neoformação óssea. Segundo pré-molar superior direito (MTA), segundo pré-molar superior esquerdo (CPB) e terceiro pré-molar superior esquerdo (CPII): clinicamente com lesão na furca; intensa área radiolucida; infiltrado inflamatório intenso. Conclusão: Todos os cimentos induziram a neoformação óssea.

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Section: Discussionmentioning

confidence: 99%

“…The composition of Portland cement is very similar to that of MTA 8 . Other similarities between these two materials include pH 9 , density 10 , antimicrobial activity, biocompatibility 11 and lower resistance to compression 12 .…”

Section: Introductionmentioning

confidence: 99%

Root perforations treatment using mineral trioxide aggregate and Portland cements

et al. 2010

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“…4,6 PMMA has been used with success in the reinforcement of zinc oxide-eugenol cements. 13 However, in the current study, 10% CaCl 2 , and 20% and 30% PMMA additives produced materials with a significantly lower compressive strength than the PC-control group.…”

Section: Discussionmentioning

confidence: 99%

“…2,4,5 Dental applications of MTA and PCs have been largely investigated, and it has since been suggested that they fulfill many of the ideal properties of endodontic materials, such as biocompatibility, good sealing and marginal adaptation. 1,[6][7][8][9][10][11] Despite such favorable biological properties, the indication of MTA and PCs for restorative purposes requires improvements in their chemical and mechanical properties. 4,6 Compressive strength and setting time of endodontic cements are critical for optimized clinical performance, and thus represent a significant advance for their use as restorative materials.…”

Section: Introductionmentioning

confidence: 99%

“…1,[6][7][8][9][10][11] Despite such favorable biological properties, the indication of MTA and PCs for restorative purposes requires improvements in their chemical and mechanical properties. 4,6 Compressive strength and setting time of endodontic cements are critical for optimized clinical performance, and thus represent a significant advance for their use as restorative materials. Therefore, this study sought to enhance the chemical and mechanical properties of PCs aiming at providing impetus for the development of materials with equal restorative and endodontic capacities.…”

Section: Introductionmentioning

confidence: 99%

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Effect of additives on the compressive strength and setting time of a Portland cement

et al. 2010

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Improvements in strength and setting time of Portland cements (PC) are needed to enhance their performance as endodontic and load bearing materials. This study sought to enhance the compressive strength and setting time of a PC by adding one of the following additives: 20% and 30% poly-methylmethacrylate (PMMA), 20% and 30% irregular and spherical amalgam alloys, and 10% CaCl 2 . The control consisted of unreinforced PC specimens. Setting time was determined using a Gillmore apparatus according to standardized methods while compressive strength was measured using a universal testing machine after 21 hours or 60 days of water storage. Data were analyzed by ANOVA, Tukey and Games-Howell tests (α = 5%). All additives significantly decreased both initial and final setting times as compared with the PC-control (p < .05). 30% PMMA and 30% irregular alloy had the lowest values of initial setting time. 30% irregular alloy also produced the lowest values of final setting time while 30% spherical alloy yielded the highest (p < .05). No differences were detected between the compressive strength values of 21 hours and 60 days. While 10% CaCl 2 , 20% and 30% PMMA produced values significantly lower than the PC-control, 30% spherical alloy significantly improved the compressive strength of the reinforced PC (p < .05). In summary, all additives significantly reduced the setting time and 30% spherical amalgam alloy yielded a significant increase in compressive strength for the tested PC, which might represent an improved composition for PCs to expand their use as endodontic and potentially load bearing materials.

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