|
KMID : 0362420090470010046
|
|
Journal of Korean Academy of Prosthodontics
2009 Volume.47 No. 1 p.46 ~ p.52
|
|
|
The study on the shear bond strength of resin and porcelain to Titanium
|
|
Park Jin-Man
Kim Yeong-Soon
Jun Sul-Gi
Park Eun-Jin
|
|
|
Abstract
|
|
|
Statement of problem: Recently, titanium has become popular as superstructure material in implant dentistry because titanium superstructure can be easily milled by means of computer-aided design and manufacture (CAD/CAM) technique. But retention form such as nail head or bead cannot be cut as a result of technical limitation of CAD/CAM milling and bond strength between titanium and porcelain is not as strong as that of conventional gold or metal alloy.
Purpose: The objective of this study was to evaluate the shear bond strength of three different materials: heat curing resin, composite resin, porcelain which were bonded to grade II commercially pure Titanium (CP - Ti).
Material and methods: Thirty seven CP - Ti discs with 9 mm diameter, 10 mm height were divided into three groups and were bonded with heat curing resin (Lucitone 199), indirect composite resin (Sinfony), and porcelain (Triceram) which were mounted in a former with 7 mm diameter and 1 mm height. Samples were thermocycled for 1000 cycles at between 5 - 55℃. Shear bond strength (MPa) was measured with Instron Universal Testing Machine with cross head speed of 1 mm/min. The failure pattern was observed at the fractured surface and divided into adhesive, cohesive, and combination failure. The data were analyzed by one-way ANOVA and Scheffe’s multiple range test (α= 0.05).
Results: Lucitone 199 (17.82 ± 5.13 MPa) showed the highest shear bond strength, followed by Triceram (12.97 ± 2.11 MPa), and Sinfony (6.00 ± 1.31 MPa). Most of the failure patterns in Lucitone 199 and Sinfony group were adhesive failure, whereas those in Triceram group were combination failure.
Conclusion: Heat curing resin formed the strongest bond to titanium which is used as a CAD/CAM milling block. But the bond strength is still low compared with the bond utilizing mechanical interlocking and there are many adhesive failures which suggest that more studies to enhance bond strength are needed.
|
|
|
KEYWORD
|
|
|
Titanium, Heat curing resin, Indirect composite resin, Porcelain, Thermocycling, Shear bond strength
|
|
|
FullTexts / Linksout information
|
|
 
|
|
|
Listed journal information
|
|
 
|
|