No full text
Master’s dissertation (Dissertations and theses)
Bonding properties of innovative CAD-CAM composite biomaterials for dental prostheses
Ebroin, Marie
2016
 

Files


Full Text
No document available.

Send to



Details



Abstract :
[en] Nowadays the tendency in dentistry is to use less invasive techniques to restore damaged dental tissues in a minimally invasive way using partial bonded ceramic and composite prostheses. Recently the industry has developed various innovative composites materials to perform customized Computer-Aided Designed and Manufactured (CAD-CAM) dental prostheses. Two sub-classes of CAD-CAM composites can be distinguished in function of their microstructure: the dispersed filler and the polymer-infiltrated ceramic network (PICN) materials. Currently there is a lack of data regarding the bonding properties of those recent biomaterials to resin cement and consequently to tooth tissues. The objectives of this study are to evaluate interfacial toughness of the different classes of CAD-CAM composites (Dispersed filler and PICNs) with resin cement after different surface pretreatments and aging, and to correlate the results with material surface parameters, particularly micro- and nanostructure. In this study, two dispersed filler (Lava Ultimate, 3M ESPE and Cerasmart, GC America), two PICNs (Vita Enamic, Vita Zahnfabrik and experimental PICN, MaJEB Sprl) and one glass-ceramic (IPS e.max CAD, Ivoclar Vivadent) materials were tested. Composite prisms (6X6X6X12mm) were manufactured from CAD-CAM blocks. Samples (n total=270, n per group=30) were split into two parts and surfaces to be bonded were pretreated either with hydrofluoric acid etching or with alumina particles sandblasting followed by silanization (Monobond Plus, Ivoclar Vivadent). All specimens were bonded using Variolink DC (Ivoclar Vivadent) resin cement and submitted to thermocycling aging (10000 cycles). The interfacial toughness was measured using the Notchless Triangular Prism (NTP) test. Surface characterization was performed using optical profilometry to measure the developed interfacial area ratio (Sdr) and scanning electron microscopy. Results showed that PICNs exhibit higher bonding ability to resin cement than dispersed filler materials. Moreover, due to their specific microstructure PICNs were shown to perform better with an etching surface pretreatment while dispersed filler materials gave better results with sandblasting. Experimental PICN gave the best results, higher than the glass-ceramic material, which is currently considered as the gold standard. Those results were explained by the micro- and nanostructure of the etched material, which was characterized by the highest Sdr measurements. This work introduces interesting perspectives regarding the indications of PICN materials in minimally invasive treatments.
Disciplines :
Dentistry & oral medicine
Author, co-author :
Ebroin, Marie ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Language :
English
Title :
Bonding properties of innovative CAD-CAM composite biomaterials for dental prostheses
Alternative titles :
[fr] Propriétés de collage des biomatériaux composites CAD-CAM innovants pour prothèses dentaires
Defense date :
2016
Institution :
ULiège - Université de Liège
Degree :
Master en Sciences Biomédicales
Available on ORBi :
since 06 February 2018

Statistics


Number of views
97 (6 by ULiège)
Number of downloads
0 (0 by ULiège)

Bibliography


Similar publications



Contact ORBi