J Periodontal Implant Sci.  2011 Jun;41(3):135-142. 10.5051/jpis.2011.41.3.135.

Effect of erbium-doped: yttrium, aluminium and garnet laser irradiation on the surface microstructure and roughness of sand-blasted, large grit, acid-etched implants

• Lee JH
• Kwon YH
• Herr Y
• Shin SI
• Chung JH

• KMID: 1783604
• DOI: http://doi.org/10.5051/jpis.2011.41.3.135

Abstract

PURPOSE
The present study was performed to evaluate the effect of erbium-doped: yttrium, aluminium and garnet (Er:YAG) laser irradiation on sand-blasted, large grit, acid-etched (SLA) implant surface microstructure according to varying energy levels and application times of the laser.
METHODS
The implant surface was irradiated by the Er:YAG laser under combined conditions of 100, 140, or 180 mJ/pulse and an application time of 1 minute, 1.5 minutes, or 2 minutes. Scanning electron microscopy (SEM) was used to examine the surface roughness of the specimens.
RESULTS
All experimental conditions of Er:YAG laser irradiation, except the power setting of 100 mJ/pulse for 1 minute and 1.5 minutes, led to an alteration in the implant surface. SEM evaluation showed a decrease in the surface roughness of the implants. However, the difference was not statistically significant. Alterations of implant surfaces included meltdown and flattening. More extensive alterations were present with increasing laser energy and application time.
CONCLUSIONS
To ensure no damage to their surfaces, it is recommended that SLA implants be irradiated with an Er:YAG laser below 100 mJ/pulse and 1.5 minutes for detoxifying the implant surfaces.

Keyword

Dental implants; Lasers

MeSH Terms

Dental Implants
Dietary Sucrose
Microscopy, Electron, Scanning
Yttrium
Dental Implants
Dietary Sucrose
Yttrium

Figure

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  Figure 1 (A) Control specimen. Sand-blasted, large grit, acid-etched implant surface without any conditioning (×500). (B) Inset of Figure 1A. Many macroporous valleys and microrough pits are observed (×2,000).

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  Figure 2 (A) Sand-blasted, large grit, acid-etched implant surface irradiatedt 100 mJ/pulse for 1 minute (×500). (B) Inset of Figure 2A. Note no remarkable change (×2,000).

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  Figure 3 (A) Sand-blasted, large grit, acid-etched implant surface irradiated at 100 mJ/pulse for 1.5 minutes (×500). (B) Inset of Figure 3A. Note no remarkable change (×2,000).

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  Figure 4 (A) Sand-blasted, large grit, acid-etched implant surface irradiated at 100 mJ/pulse for 2 minutes (×500). (B) Inset of Figure 4A. Melted surface is observed (×2,000).

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  Figure 5 (A) Sand-blasted, large grit, acid-etched implant surface irradiated at 140 mJ/pulse for 1 minute (×500). (B) Inset of Figure 5A. Melted surface is observed (×2,000).

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  Figure 6 (A) Sand-blasted, large grit, acid-etched implant surface irradiated at 140 mJ/pulse for 1.5 minutes (×500). (B) Inset of Figure 6A. Flattened surface is observed (×2,000).

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  Figure 7 (A) Sand-blasted, large grit, acid-etched implant surface irradiated at 140 mJ/pulse for 2 minutes (×500). (B) Inset of Figure 7A. Flattened surface is observed (×2,000).

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  Figure 8 (A) Sand-blasted, large grit, acid-etched implant surface irradiated at 180 mJ/pulse for 1 minute (×500). (B) Inset of Figure 8A. Melted surface is observed (×2,000).

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  Figure 9 (A) Sand-blasted, large grit, acid-etched implant surface irradiated at 180 mJ/pulse for 1.5 minutes (×500). (B) Inset of Figure 9A. Flattened surface is observed (×2,000).

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  Figure 10 (A) Sand-blasted, large grit, acid-etched implant surface irradiated at 180 mJ/pulse for 2 minutes (×500). (B) Inset of Figure 10A. Flattened surface is observed (×2,000).

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