Comparison of the shear bond strengths of conventional mesh bases and sandblasted orthodontic bracket bases
Braz. oral res
;
23(4): 407-414, Oct.-Dec. 2009. ilus, graf, tab
Artículo
en Inglés
| LILACS
| ID: lil-534212
ABSTRACT
This study aimed to compare in vitro the shear bond strength between metallic brackets (Abzil) with conventional mesh bases and metallic brackets with bases industrially sandblasted with aluminum oxide using three adhesive systems, in order to assess the influence of sandblasting on adhesiveness and to compare 3 different bonding systems. Two hundred and forty bovine incisors were used and randomly divided into 6 groups (40 teeth in each group), according to the bracket base and to the bonding system. The brackets were direct-bonded in bovine teeth with 3 adhesive systems System A - conventional TransbondTM XT (3M - Unitek); System B - TransbondTM Plus Self Etching Primer + TransbondTM XT (3M - Unitek) and System C - Fuji ORTHO LC resin-reinforced glass ionomer cement in capsules (GC Corp.). Shear bond strength tests were performed 24 hours after bonding, in a DL-3000 universal testing machine (EMIC), using a load cell of 200 kgf and a speed of 1 mm/min. The results were submitted to statistical analysis and showed no significant difference between conventional and sandblasted bracket bases. However, comparison between the bonding systems presented significantly different results. System A (14.92 MPa) and system C (13.24 MPa) presented statistically greater shear bond strength when compared to system B (10.66 MPa). There was no statistically significant difference between system A and system C.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Técnicas In Vitro
/
Recubrimiento Dental Adhesivo
/
Soportes Ortodóncicos
/
Cementos Dentales
/
Resistencia al Corte
/
Óxido de Aluminio
Límite:
Animales
Idioma:
Inglés
Revista:
Braz. oral res
Asunto de la revista:
Odontología
Año:
2009
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
São Paulo State University/BR
Similares
MEDLINE
...
LILACS
LIS