Tooth-composite bond failure with a universal and an etch-and-rinse adhesive depending on mode and frequency of application
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
OBJECTIVES: To evaluate the effect of an additional layer of universal adhesive on the interfacial enamel/dentin-composite gap formation in relation to application mode and aging, via spectral domain optical coherence tomography (SD-OCT) and scanning electron microscopy (SEM).
METHODS: In vitro class V cavities in 114 caries-free premolars were restored by applying one or two layers of a universal adhesive (Scotchbond Universal, SBU) in self-etch (se) and etch-and-rinse (er) mode or the reference adhesive OptiBond FL (OFL-er). The restorations were imaged by SD-OCT (six groups, n = 8) and SEM (n = 3) directly after filling (t1), water storage (t2, 24 h), embedding (t3), and thermo-mechanical loading (t4, TCML). The interfacial gaps were quantified using 26 parameters and analyzed using principal component analysis and linear mixed effect models.
RESULTS: Gap formation at enamel and dentin was significantly influenced by the adhesive, the application mode and number of layers (p < 0.001). This was due to the influence of the SBU-er mode (p < 1e-05), which showed significantly more gap formation and a greater range of variation with double application when compared to SBU-se and OFL. The fewest interfacial gaps occurred with one or two applications of OFL-er and one layer of SBU-er.
SIGNIFICANCE: Adhesive application mode and the number of adhesive layers are relevant factors in the tooth-composite bond failure. Double application worsened the adaptation of SBU to freshly prepared dentin conditioned with phosphoric acid.
Details
Originalsprache | Englisch |
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Seiten (von - bis) | 359-369 |
Seitenumfang | 11 |
Fachzeitschrift | Dental materials : official publication of the Academy of Dental Materials |
Jahrgang | 40 |
Ausgabenummer | 2 |
Frühes Online-Datum | 23 Dez. 2023 |
Publikationsstatus | Veröffentlicht - Feb. 2024 |
Peer-Review-Status | Ja |
Externe IDs
Scopus | 85180592405 |
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Schlagworte
Schlagwörter
- Composite Resins/chemistry, Dental Bonding, Dental Cements, Dentin, Dentin-Bonding Agents/chemistry, Materials Testing, Resin Cements/chemistry