Study of two MTA cements
Med. oral patol. oral cir. bucal (Internet)
; 19(6): e634-e638, nov. 2014. ilus
Article
en En
| IBECS
| ID: ibc-130360
Biblioteca responsable:
ES1.1
Ubicación: BNCS
ABSTRACT
To determine and compare the pH, conductivity and calcium release of an experimental Portland cement (PE) consisting of trioxid mineral aggregate and a comercially available modified Portland cement (C.P.M.) after 1, 2, 3, 4, 8, 10, 15 and 30 days. Material and Methods- Cements were mixed following the manufacturers instructions, with a powder- liquid ratio of 3-1. Each cement was placed in 12 PVC tubes 1 mm in diameter and 10 mm in length and allowed to set. Four empty tubes were used as negative controls. Tubes were submerged in plastic flasks containing 10 ml deionized water and stored at 37ºC and 100% humidity. After 1, 2, 3, 4, 8, 10, 15 and 30 days tubes were removed from the flasks and these were refilled with deionized water. We measured pH, conductivity and calcium content of the recovered solution. Data were analyzed using repeated measures ANOVA. Results: pH was 0.3 units more alkaline with PE cement (p=0.023). pH experienced a slight decrease with time (p<0.001), independently of the cement type (p>0.05). Conductivity of PE and CPM cements diminished at 4 days and almost recovered at 30 days (p<0.001). PE cement had a higher conductivity (p<0.001). Calcium release diminished from the first day and recovered at 30 days (p<0.001) similarly for both cements (p>0.05). Conclusions: PE cement raised pH slightly more and had higher conductivity than CPM. Calcium release diminished after the first day and recovered at 30 days, similarly for both cements
Texto completo:
1
Colección:
06-national
/
ES
Base de datos:
IBECS
Asunto principal:
Periodontitis Periapical
/
Cementos Dentales
Límite:
Humans
Idioma:
En
Revista:
Med. oral patol. oral cir. bucal (Internet)
Año:
2014
Tipo del documento:
Article