TY - JOUR
T1 - Chlorhexidine does not improve but preserves bond strength to eroded dentin
AU - Francisconi-Dos-Rios, Luciana Fávaro
AU - Calabria, Marcela Pagani
AU - Casas-Apayco, Leslie Caroll
AU - Honório, Heitor Marques
AU - De Oliveira Carrilho, Marcela Rocha
AU - Pereira, José Carlos
AU - Wang, Linda
PY - 2015/2/1
Y1 - 2015/2/1
N2 - Purpose: To evaluate the effect of aqueous solutions of chlorhexidine digluconate (CHX) in different concentrations on bond strength to eroded dentin up to 6 months, using normal dentin as a control. Methods: Exposed flat dentin of extracted third molars was only ground with 600-grit SiC paper/1 minute (normal dentin - N), or subsequently eroded by a regular-cola soft-drink (eroded dentin - E). N and E were acid-etched, washed, dried and rehydrated with 1.5 uL, respectively, of distillated water (control - NC / EC); of 0.004% CHX (NO.004% / EO.004%); or of 2% CHX (N2% / E2%). Adper Single Bond 2 was applied in all specimens and resin composite buildups were constructed with Filtek Z350. Specimens were sectioned in beams, which were tested (uTBS) immediately or after 6 months of aging. Results: Microtensile bond strength to eroded dentin was always significantly lower than that to normal dentin. Application of tested CHX solutions did not exert a significant effect immediately; however, after aging, the 2% CHX prevented abrupt bond strength loss both to eroded and normal dentin.
AB - Purpose: To evaluate the effect of aqueous solutions of chlorhexidine digluconate (CHX) in different concentrations on bond strength to eroded dentin up to 6 months, using normal dentin as a control. Methods: Exposed flat dentin of extracted third molars was only ground with 600-grit SiC paper/1 minute (normal dentin - N), or subsequently eroded by a regular-cola soft-drink (eroded dentin - E). N and E were acid-etched, washed, dried and rehydrated with 1.5 uL, respectively, of distillated water (control - NC / EC); of 0.004% CHX (NO.004% / EO.004%); or of 2% CHX (N2% / E2%). Adper Single Bond 2 was applied in all specimens and resin composite buildups were constructed with Filtek Z350. Specimens were sectioned in beams, which were tested (uTBS) immediately or after 6 months of aging. Results: Microtensile bond strength to eroded dentin was always significantly lower than that to normal dentin. Application of tested CHX solutions did not exert a significant effect immediately; however, after aging, the 2% CHX prevented abrupt bond strength loss both to eroded and normal dentin.
UR - https://www.scopus.com/pages/publications/84926296102
M3 - Artículo
C2 - 25864239
AN - SCOPUS:84926296102
SN - 0894-8275
VL - 28
SP - 28
EP - 32
JO - American Journal of Dentistry
JF - American Journal of Dentistry
IS - 1
ER -