RT Journal Article T1 Influence of 2% Chlorhexidine on the Bond Strength of Three Adhesive Systems on Primary Molars: An In Vitro Study A1 Velayos Galán, Laura A1 Molinero Mourelle, Pedro A1 Sevilla, Pablo A1 Fonseca, Manrique A1 Mourelle Martínez, Rosa A1 Vera González, Vicente AB The hydrolysis of the collagen matrix by metalloproteinases (MMPs) is one of the paradigms that currently arouses most interest due to its close relationship with a decrease in bond strength (BS) and consequent restoration failure. Chlorhexidine 2% has demonstrated its ability to inhibit MMPs’ activity in the permanent dentition, improving the duration of resin–dentine, but there are few studies on deciduous dentition and its possible repercussions. Aim: To determine the influence of 2% chlorhexidine digluconate (CHX) as a dentine pretreatment on the BS of three adhesive systems on primary molars. Methods: 128 primary extracted molars were assigned to eight groups at random. BS in vitro was recorded by micropush-out test, and analyzed by two-way ANOVA. Results: BS values oscillated from 15.01 MPa to 20.41 MPa. There was no statistically relevant variation between the BS total mean of those adhesive groups that had received CHX pretreatment versus those that did not. Adper Prompt L-Pop was the self-etching adhesive with the best BS. Adper Scotchbond 1XT was the total-etch adhesive with the best BS values. Conclusions: Application of 2% chlorhexidine for 60 s as dentine pretreatment did not affect the immediate BS of several adhesive systems used in primary dentition. PB MDPI SN 2076-3417 YR 2022 FD 2022 LK https://hdl.handle.net/20.500.14352/87267 UL https://hdl.handle.net/20.500.14352/87267 LA eng NO Velayos-Galán, L.; Molinero-Mourelle, P.; Sevilla, P.; Fonseca, M.; Mourelle-Martínez, M.R.; Vera-González, V. Influence of 2% Chlorhexidine on the Bond Strength of Three Adhesive Systems on Primary Molars: An In Vitro Study. Appl. Sci. 2022, 12, 2964. https://doi.org/10.3390/ app12062964 DS Docta Complutense RD 10 abr 2025