Stape, T., Seseogullari-Dirihan, R., Tjäderhane, L., Abuna, G., Martins, L., Tezvergil-Mutluay, A. (2018) A novel dry-bonding approach to reduce collagen degradation and optimize resin-dentin interfaces. Scientific Reports, 8 (1), 16890. doi:10.1038/s41598-018-34726-8
A novel dry-bonding approach to reduce collagen degradation and optimize resin-dentin interfaces
|Author:||Stape, Thiago Henrique Scarabello1,2; Seseogullari-Dirihan, Roda1,2; Tjäderhane, Leo3,4;|
1Department of Restorative Dentistry and Cariology, Adhesive Dentistry Research Group, Institute of Dentistry, University of Turku
2Turku University Hospital, TYKS, University of Turku
3Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland and Helsinki University Hospital
4Research Unit of Oral Health Sciences, Medical Research Center Oulu (MRC Oulu), Oulu University Hospital and University of Oulu
5Piracicaba Dental School, University of Campinas, Department of Restorative Dentistry, Dental Materials Area
6Piracicaba Dental School, University of Campinas, Department of Restorative Dentistry
|Online Access:||PDF Full Text (PDF, 2.5 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe201901182497
|Publish Date:|| 2019-01-18
In dentistry, the wet-bonding approach relies on water to maintain demineralized collagen expanded for proper resin infiltration; nevertheless, hydrolytic instability of the resin-dentin interface is inevitable with current bonding techniques. Considering dimethyl sulfoxide’s (DMSO) ability to “biomodify” collagen and precipitate enzymes, the aim was to test whether the use of DMSO would permit adequate resin bonding to H3PO4-etched dehydrated dentin and assess its impact on collagen degradation by host-derived enzymes. Etched dentin surfaces from extracted sound human molars were randomly bonded in wet or dry conditions using aqueous or ethanolic DMSO solutions as pretreatments and bonding resins with or without DMSO. Bonded teeth were sectioned into resin-dentin slabs for confocal in situ zymography and beams for microtensile bond strength test. Demineralized powdered dentin was incubated in the tested DMSO -media and a hydroxyproline assay evaluated dissolution of collagen peptides. Zymography was performed on protein extracts obtained from dry and wet H3PO4-ecthed dentin powder treated with the DMSO- media. The correlative biochemical analysis demonstrated that reduction of water content during dentin hybridization by the innovative dry-bonding approaches with DMSO is effective to inactivate host-derived MMP-2 and MMP-9 and thus reduce collagen degradation while simultaneously optimizing resin-dentin bonding.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
This work was supported by grant #296653 from the Academy of Finland to AT-M (PI), EVO funding of Turku University Hospital to AT-M (PI) and CIMO fellowship funding to THSS.
|Academy of Finland Grant Number:||
296653 (Academy of Finland Funding decision)
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