IADR Abstract Archives

Antimicrobial activity and adhesive properties of self-etch universal adhesive systems on caries-affected dentin: 18 months.

Objectives: To evaluate antimicrobial activity (AMA), as well as resin-dentine microtensile bond strength (μTBS), nanoleakage (NL) and in situ degree of conversion (DC) on sound and caries-affected dentine of six universal adhesives (UAs) applied in self-etch mode.
Methods: The following universal adhesives were used: Prime&Bond Active (PBA); Scotchbond Universal (SBU); Tetric N-Bond Universal (TNU); Ambar Universal (AMU); Clearfil Universal Bond Quick (CUQ) and One Coat 7 Universal (OCU). The AMA was evaluated against Streptococcus mutans by agar difusion test. After the adhesives were applied in self-etch (SE) strategy to flat sound or carious dentin surfaces, composite resin restorations were build-ups, and then, the specimens were sectioned to obtain resin–dentine sticks. It was evaluated μTBS, NL and in situ DC after 24h and μTBS and NL after 18-months of water storage (18M). ANOVA and Tukey’s test were applied (α = 0.05).
Results: For AMA, CUQ showed higher values than all adhesives. For in situ-DC, TNU present the highest value, while PBA and OCU present the lowest, regardless of dentine. For μTBS, OCU present the lowest values at immediate and 18-month evaluation. For NL, significant differences were observed among adhesives, depending of time and dentine. Worst values of μTBS and in situ DC were always obtained in caries-affected dentine (p<0.05).
Conclusions: Not all the UAs have the same performance in antimicrobial activity. But, most of them presented worst results in terms of adhesive properties in carious dentine, mainly after 18 months.

2020 Chilean Division Meeting (Virtual)

2020

Dental Materials 4: Adhesion
  • Ñaupari Villasante, Romina  ( Department of Restorative Dentistry, State University of Ponta Grossa, , Ponta Grossa , Brazil )
  • Gutierrez Reyes, Mario  ( Department of Biomaterials, School of Dentistry, Universidad de los Andes , Santiago , Chile ;  Institute of Research in Dental Sciences, University of Chile , Santiago , Chile )
  • Alegría Acevedo, Luisa  ( Department of Restorative Dentistry, State University of Ponta Grossa, , Ponta Grossa , Brazil )
  • Núñez, Alejandra  ( Department of Restorative Dentistry, State University of Ponta Grossa, , Ponta Grossa , Brazil ;  Department of Restorative Dentistry and Biomaterials, San Francisco de Quito University , Quito , Ecuador )
  • Mendez-bauer, María  ( Department of Restorative Dentistry, State University of Ponta Grossa, , Ponta Grossa , Brazil ;  Department of Research, Faculty of Dentistry. Universidad Francisco Marroquín , Guatemala City , Guatemala )
  • Buvinic, Sonja  ( Institute of Research in Dental Sciences, University of Chile , Santiago , Chile )
  • Fernández, Eduardo  ( Department of Restorative Dentistry, University of Chile , Santiago , Chile ;  Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile , Santiago , Chile )
  • Loguercio, Alessandro  ( Department of Restorative Dentistry, State University of Ponta Grossa, , Ponta Grossa , Brazil )
  • NONE
    Proyect Fondecyt 1170575 (Chile) and CNPq 305588/2014-1 (Brasil)
    Oral Session
    Oral Session 3: Hatton Award Competition