Evaluation of the Interfaces between Restorative and Regenerative Biomaterials Used in Vital Pulp Therapy
| Autor: | Ana Luísa Costa, Paulo Palma, João Carlos Ramos, Maria Teresa Xavier, Francisco Caramelo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Molar
Technology Materials science Vital pulp treatment Composite number Pulpotomy Article calcium silicate cements General Materials Science adhesive systems Direct pulp capping pulpotomy Microscopy QC120-168.85 Bond strength QH201-278.5 vital pulp treatment Engineering (General). Civil engineering (General) TK1-9971 Pulp capping adhesion Descriptive and experimental mechanics Pulp therapy direct pulp capping Adhesion Electrical engineering. Electronics. Nuclear engineering Adhesive TA1-2040 Interface analysis Calcium silicate cements Scanning electron microscopy Adhesive systems scanning electron microscopy Biomedical engineering |
| Zdroj: | Materials Volume 14 Issue 17 CIÊNCIAVITAE Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Materials, Vol 14, Iss 5055, p 5055 (2021) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma14175055 |
| Popis: | Background: Calcium-silicate-based cements (CSC) have gained an increasing scientific and clinical relevance, enabling more conservative approaches, namely pulp preservation and regeneration therapies. This research aims to study the influence of four clinical variables on the interfaces between CSC and composite adhesive restoration, concerning shear bond strength (SBS) and ultra-morphological patterns. Methods: SBS tests were performed in 320 specimens divided in 16 groups (n = 20) according to: two CSC (NuSmile® NeoMTA, BiodentineTM) two adhesive systems (ClearfilTM SE Bond 2 (CSEB2), ClearfilTM Universal Bond Quick (CUBQ)) optional application of an additional hydrophobic bonding layer (HBL) two restoration times (immediate, seven days). Scanning electron microscopy (SEM) was performed to conduct the ultra-morphology interface analysis in 32 deciduous molars prepared and randomly allocated into the 16 groups. Results: Globally, SBS tests showed higher bond strength of CUBQ compared to CSEB2 (p < 0.001), as with an additional HBL application (p = 0.014) and delayed restoration (p < 0.001). SEM showed the interpenetration between adhesive systems and CSC forming a hybrid layer, whose depth and thickness depended on the restoration time and adhesive strategy. Conclusions: The independent clinical variables adhesive system, application of an additional HBL and restoration time affected the bond performance and ultra-morphological interface between composite adhesive restoration and CSC. |
| Databáze: | OpenAIRE |
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