Study on Nd:YAG Laser Etching on the Bonding Strength of Titanium to Porcelain.

doi:10.13701/j.cnki.kqyxyj.2016.03.012

Abstract

Abstract: Objective: To investigate the effects of Nd:YAG laser treatment on the microstructure and bonding strength of titanium to porcelain. Methods: Thirty non-cast titanium strips were rubbed by silicon carbide sandpaper under running water, and then divided into three groups (Group A to C, 10 strips per group) randomly. Group A was sandblasted. Group B was Nd:YAG laser irradiated at 20A for 15s. Group C was Nd:YAG laser irradiated at 20A for 30s. Microstructural and chemical analyses were performed by means of SEM and EDS. After surface treatment, low-fusing porcelain was applied on the titanium specimens according to the manufacturer’s instructions. Bonding strength was measured by a three-point bending tester according to ISO9693. SEM and EDS analyses were also performed for one specimen of each group after the shear bond strength test to evaluate the nature of the fracture surface. Results: There was difference in the surface morphology and the phase components of three groups. Group C produced the highest bond strength among three groups (P<0.001). The bond strength of group B was higher than that of group A (P<0.05), which was also significantly lower than that of group C (P<0.05). Bonding strength of group B and group C were higher than the minimum requirement of ISO 9693. Conclusion: Laser treatment may be an alternative method to sandblasting for enhancing the bonding strength of low-fusing porcelain to titanium.

Key words: Neodymium:Yttrium-aluminum-garnet laser , Titanium, Three-point fracture test

CLC Number:

R783.1

HUANG Ting, GOU Shi-ran, ZHANG Fan, ZHENG Li-ge. Study on Nd:YAG Laser Etching on the Bonding Strength of Titanium to Porcelain.[J]. Journal of Oral Science Research, 2016, 32(3): 261-265.

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