Health & Environmental Research Online (HERO)


Print Feedback Export to File
1766382 
Journal Article 
Comparative histological analysis of bone healing of standardized bone defects performed with the Er : YAG laser and steel burs 
Artuso de Mello, ED; Pagnoncelli, RM; Munin, E; Sant'Ana Filho, M; de Mello, GPS; Loschiavo Arisawa, EA; de Oliveira, MG 
2008 
1 
Lasers in Medical Science
ISSN: 0268-8921
EISSN: 1435-604X 
23 
3 
253-260 
17632745 
WOS:000256912200005 
This study compares the bone repair process after
ostectomies performed either with the erbium:yttrium-aluminum-garnet (Er:YAG) laser or with the
low-speed bur drilling. Eighteen rats were used for this study. In the control group, the
ostectomy was performed with a low-speed bur drilling. In the experimental group, the ostectomy
was made with an Er:YAG laser (500 mJ, 10 Hz). At 7 and 14 days after surgery, the experimental
group presented earlier bone repair in comparison to the control group. The experimental group
presented an altered layer of approximately 24-mu m thickness, whereas the control group did not
present any altered layer in the margins of the ostectomies. At 21 days, the histological
features of the two groups were very similar, although the altered layer could still be seen. The
Er:YAG laser successfully promoted the ablation of the bone tissue, but caused some thermal
damage at the margins of the ostectomies. 
ostectomy; lasers; bone regeneration