Histological evaluation of the effect of low-level laser on distraction osteogenesis in rabbit mandibles

被引：21
|
作者：
Kreisner, Paulo-Eduardo [1 ]
Blaya, Diego-Segatto [1 ]
Gaiao, Leonilson [2 ]
Maciel-Santos, Marconi-Eduardo-Sousa [3 ]
Etges, Adriana [4 ]
Santana-Filho, Manoel [1 ]
de Oliveira, Marilia-Gerhardt [1 ]
机构：
[1] Pontificia Univ Catolica Rio Grande do Sul, Sch Dent, Porto Alegre, RS, Brazil
[2] Sch Dent, Imperatriz, MA, Brazil
[3] Univ Pernambuco, Sch Dent, Camaragibe, PE, Brazil
[4] Univ Fed Pelotas, Sch Dent, Pelotas, RS, Brazil
来源：
MEDICINA ORAL PATOLOGIA ORAL Y CIRUGIA BUCAL | 2010年 / 15卷 / 04期
关键词：
Distraction osteogenesis; lasers; physical process; basic research;
D O I：
10.4317/medoral.15.e616
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
Objectives: This study evaluated the action of low level laser therapy (LLLT) on the percentage of newly formed bone in rabbit mandibles that underwent distraction osteogenesis (DO). Study design: Ten rabbits underwent bone lengthening according to the following protocol: Latency - 3 days; Activation - 7 days 0.7 mm/d; and Consolidation - 10 days. The control group was composed of 4 rabbits. The experimental group, composed of 6 rabbits, received infrared GaAlAs LLLT (lambda=830 nm, P=40 mW) according to the following protocol: point dose of 10 J/cm2 applied directly on the bone site that underwent DO during bone consolidation at 48-hour intervals. Results: The percentage of newly formed bone was greater in the LLLT group (57.89%) than in the control group (46.75%) (p=0.006). Conclusion: The results suggest that LLLT had a positive effect on the percentage of newly formed bone. Better-quality bone sites may allow early removal of the osteogenic distractors, thus shortening total treatment time.
引用
收藏
页码：E616 / E618
页数：3
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