Radiopacity evaluation of Portland and MTA-based cements by digital radiographic system
J. appl. oral sci
;
19(3): 228-232, May-June 2011. ilus, graf, tab
Artigo
em Inglês
| LILACS
| ID: lil-588127
ABSTRACT
OBJECTIVE:
The aim of the present study was to evaluate the radiopacity of Portland and MTA-based cements using the Digora TM digital radiographic system. MATERIAL ANDMETHODS:
The performed tests followed specification number 57 from the American National Standard Institute/American Dental Association (2000) for endodontic sealing materials. The materials were placed in 5 acrylic plates, especially designed for this experiment, along with a graduated aluminum stepwedge varying from 1 to 10 mm in thickness. The set was radiographed at a 30 cm focus-object distance and with 0.2 s exposure time. After the radiographs were taken, the optical laser readings of radiographs were performed by Digora TM system. Five radiographic density readings were performed for each studied material and for each step of the aluminum scale.RESULTS:
White ProRoot MTA (155.99±8.04), gray ProRoot MTA (155.96±16.30) and MTA BIO (143.13±16.94) presented higher radiopacity values (p<0.05), while white non-structural Portland (119.76±22.34), gray Portland (109.71±4.90) and white structural Portland (99.59±12.88) presented lower radiopacity values (p<0.05).CONCLUSIONS:
It was concluded that MTA-based cements were the only materials presenting radiopacity within the ANSI/ADA specifications.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Óxidos
/
Materiais Restauradores do Canal Radicular
/
Silicatos
/
Compostos de Cálcio
/
Compostos de Alumínio
/
Meios de Contraste
/
Radiografia Dentária Digital
/
Cimentos Dentários
Idioma:
Inglês
Revista:
J. appl. oral sci
Assunto da revista:
Odontologia
Ano de publicação:
2011
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
University of Cuiabá/BR
/
University of Ribeirão Preto/BR
/
University of São Paulo/BR
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