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Carbodiimide inactivation of matrix metalloproteinases in radicular dentine
- Source :
- Journal of Dentistry. 82:56-62
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Objectives: The present in vitro study evaluated the effect of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC), a cross-linking agent used as an additional therapeutic primer for luting fiber posts to radicular dentine to prevent hybrid layer degradation. Methods: Root canal treatment was performed on 80 extracted single-rooted human teeth. A 10-mm post space was prepared and pecimens were randomly assigned to four groups (n=20) according to the bonding system: 1) All Bond 3 (Bisco); 2) All Bond 3 + 0.3M EDC; 3) Prime&Bond XP (Dentsply Sirona); 4) Prime&Bond XP + 0.3M EDC. In groups 2 and 4, EDC was applied on phosphoric acid-etched dentine for 1 min. Fiber posts (RelyX Fiber Post, 3M ESPE) were luted with a dual-cured resin cement (Core-X flow, Dentsply Sirona). Slices were prepared for micro push-out test and interfacial nanoleakage evaluation of the coronal and apical region of the canal space after 24 h and 1 year storage in artificial saliva. In-situ zymography was performed to investigate endogenous matrix metalloproteinase activities within the hybrid layer. Results were statistically analysed with three-way ANOVA test or Chi Square test. Statistical significance was set at α=0.05. Results: No significant influence was identified between the two adhesives. The use of EDC significantly improved fiber post bond strength at 1 year but not at 24 h. Application of 0.3 M EDC prior to bonding significantly reduced gelatinolytic activities within the radicular hybrid layers. Conclusions: Carbodiimide was effective in preserving fibre post bond strength over time, through reducing the activities of intra-radicular endogenous proteases. Clinical Significance: Inhibition of matrix metalloproteinases using EDC over radicular dentin could play an important role in bond strength preservation. However, the clinical relevance of these findings needs to be proven.
- Subjects :
- Dentin-Bonding Agent
Root canal
Matrix metalloproteinase
Root Canal Filling Materials
Carbodiimide
Push-out
03 medical and health sciences
chemistry.chemical_compound
0302 clinical medicine
Materials Testing
medicine
Humans
Zymography
030212 general & internal medicine
Fiber
In situ zymography
General Dentistry
Chemistry
Bond strength
Root Canal Filling Material
Resin Cement
Dental Bonding
030206 dentistry
Matrix metalloproteinases
Dentistry (all)
Matrix Metalloproteinases
Resin Cements
Enzyme Activation
Carbodiimides
medicine.anatomical_structure
Radicular dentin
Dentin-Bonding Agents
Dentin
Adhesive
Dental Pulp Cavity
Human
Biomedical engineering
Subjects
Details
- ISSN :
- 03005712
- Volume :
- 82
- Database :
- OpenAIRE
- Journal :
- Journal of Dentistry
- Accession number :
- edsair.doi.dedup.....269b2e02d3b40d3e7fc9309833dd8911