The effect of Er:YAG laser irradiation on the surface microstructure and roughness of hydroxyapatite-coated implant.
OBJECTIVE
The present study was performed to evaluate the effect of erbium:yttrium-aluminium-garnet (Er:YAG) laser irradiation on the change of hydroxyapatite (HA)-coated implant surface microstructure according to the laser energy and the application time.


METHODS
The implant surface was irradiated by Er:YAG laser under combination condition using the laser energy of 100 mJ/pulse, 140 mJ/pulse and 180 mJ/pulse and application time of 1 minute, 1.5 minutes and 2 minutes. The specimens were examined by surface roughness evaluation and scanning electron microscopic observation.


RESULTS
In scanning electron microscope, HA-coated implant surface was not altered by Er:YAG laser irradiation under experimental condition on 100 mJ/pulse, 1 minute. Local areas with surface melting and cracks were founded on 100 mJ/pulse, 1.5 minutes and 2 minutes. One hundred forty mJ/pulse and 180 mJ/pulse group had surface melting and peeling area of HA particles, which condition was more severe depending on the increase of application time. Under all experimental condition, the difference of surface roughness value on implant surface was not statistically significant.


CONCLUSIONS
Er:YAG laser on HA-coated implant surface is recommended to be irradiated below 100 mJ/pulse, 1 minute for detoxification of implant surface without surface alteration.
Department of Periodontology, Kyung Hee University School of Dentistry, Seoul, Korea.
Seong-Won
SW
Kim
Young-Hyuk
YH
Kwon
Jong-Hyuk
JH
Chung
Seung-Il
SI
Shin
Yeek
Y
Herr
Clin Oral Implants Res. 2005 Feb;16(1):36-43
15642029
Implant Dent. 1992 Summer;1(2):154-8
1288809
Lasers Surg Med. 1998;22(5):302-11
9671997
Implant Dent. 2000;9(3):247-51
11307411
Int J Prosthodont. 2002 Nov-Dec;15(6):582-7
12475166
Clin Oral Implants Res. 1993 Mar;4(1):23-7
8329534
Int J Oral Maxillofac Implants. 1990 Spring;5(1):31-8
2391137
J Biomed Mater Res A. 2006 Oct;79(1):53-60
16758451
Clin Oral Implants Res. 1999 Jun;10(3):204-11
10522180
J Prosthet Dent. 1983 Jul;50(1):101-7
6576145
Lasers Surg Med. 1996;18(2):150-6
8833283
Int J Prosthodont. 2004 Sep-Oct;17(5):536-43
15543910
Clin Oral Implants Res. 1998 Jun;9(3):185-94
10530133
J Periodontol. 1992 Nov;63(11):859-70
1453301
J Periodontol. 2002 Oct;73(10):1118-25
12416768
J Periodontol. 2000 May;71(5):810-5
10872964
Int J Oral Maxillofac Implants. 2000 May-Jun;15(3):331-44
10874798
Int J Oral Maxillofac Implants. 2002 Mar-Apr;17(2):202-11
11958402
Clin Oral Implants Res. 2004 Dec;15(6):667-76
15533127
J Periodontol. 1998 Aug;69(8):857-64
9736367
J Periodontol. 2002 Nov;73(11):1292-8
12479633
J Periodontol. 1990 Aug;61(8):485-90
2202807
Rev Belge Med Dent (1984). 1991;46(3):64-71
1754695
J Clin Periodontol. 2001 Mar;28(3):220-6
11284534
J Prosthet Dent. 1992 Jun;67(6):847-51
1403876
Clin Oral Implants Res. 2003 Dec;14(6):784-92
15015956
Minerva Stomatol. 2009 Jul-Aug;58(7-8):317-30
19633633
Clin Oral Implants Res. 1996 Mar;7(1):64-72
9002824
Lasers Surg Med. 1996;19(2):190-200
8887923
Clin Oral Implants Res. 2000 Apr;11(2):129-38
11168203
Oral Microbiol Immunol. 1988 Sep;3(3):113-20
3269993
Eur J Oral Sci. 1998 Feb;106(1):527-51
9527353
Lasers Surg Med. 1996;18(3):294-300
8778525
Dent Clin North Am. 1992 Jan;36(1):235-8
1310655
Int J Oral Maxillofac Implants. 1988 Spring;3(1):9-20
3074954
J Periodontal Res. 1989 Mar;24(2):96-105
2542514
J Bone Joint Surg Br. 1988 Jan;70(1):17-22
2828374
Clin Oral Implants Res. 2006 Feb;17(1):85-93
16441789
Lasers Surg Med. 2003;32(5):359-66
12766958