Additive effects of touch-activated polymerization and extended irradiation time on bonding of light-activated adhesives to root canal dentin.
J Prosthet Dent
; 127(5): 750-758, 2022 May.
Article
en En
| MEDLINE
| ID: mdl-33431177
ABSTRACT
STATEMENT OF PROBLEM:
The bonding of light-activated adhesives to root canal dentin with an additional touch-polymerization activator has been insufficiently examined.PURPOSE:
The purpose of this in vitro study was to investigate the effect of touch-polymerization activators and extended light-irradiation time on the microtensile bond strength (µTBS) of light-activated adhesives. MATERIAL ANDMETHODS:
Post cavities were prepared in 50 extracted mandibular premolars and bonded using Prime&Bond Universal (PBU); PBU+Self Cure Activator (SCA); Clearfil SE Bond 2 (SEB); SEB+Clearfil DC Activator (DCA); or Clearfil Universal Bond Quick ER (UBQ). After light-irradiation for 10 or 20 seconds, the post cavities were filled with dual-activated resin core materials. Eight beams were prepared per specimen and subjected to the µTBS test. The µTBS data were analyzed by using 3-way ANOVAs with the Bonferroni correction (α=.05).RESULTS:
The 3-way ANOVAs indicated that the use of touch-polymerization activators (SCA and DCA) significantly increased the µTBS of PBU and SEB in both the coronal (P=.015) and apical (P=.001) regions. The extension of light-irradiation time to 20 seconds significantly improved their µTBS in the apical region (P<.001), but not in the coronal region (P=.09). Light-irradiation for 20 seconds increased the µTBS of UBQ significantly in the coronal region (P=.014).CONCLUSIONS:
Touch-polymerization activators improved the bond strength of light-activated adhesives to root canal dentin, especially when combined with an extended light-irradiation time.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Recubrimiento Dental Adhesivo
/
Recubrimientos Dentinarios
Idioma:
En
Revista:
J Prosthet Dent
Año:
2022
Tipo del documento:
Article
País de afiliación:
Indonesia