Low-level laser therapy for implants without initial stability
Related Experiment Video
Updated: Jun 19, 2026
In Vitro Evaluation of The Effects Of Er,Cr:YSGG and Diode Lasers Used on Titanium Cylinder
Published on: June 6, 2025
Bruno Pereira Campanha1, Clóvis Gallina, Tomás Geremia
1School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
Objective:
This study evaluated the effect of low-level infrared laser on removal torque values of implants with poor initial stability inserted in rabbit tibias.
Background Data:
It is important to analyze the effects of laser radiation on bone repair when low-quality bone and implants with poor initial stability are used.
Materials And Methods:
Thirty male white New Zealand rabbits (Oryctolagus Cuniculus) about 2 mo old and weighing 1.5-2.0 kg were used. Machined implants with poor initial stability were inserted in the tibia of each animal. Animals were randomly divided into two groups: laser irradiated and laser nonirradiated. Each group was further divided into three subgroups, according to the day the animals were killed: 15, 30, or 45 d. Torque values were measured with an axial digital torquemeter that applied counter-torque. The Student's t-test was used to calculate means and standard deviations for the comparisons between laser and control groups.
Results:
A significant increase (p = 0.050) in removal torque values was found in the group of laser-irradiated implants at 15 and 30 d when compared with the control groups. At 45 d, no significant differences were found.
Conclusion:
In this study, low-level laser therapy promoted the osseointegration of implants with poor initial stability, particularly in the initial stages of bone healing.
