BioMed Research International / 2019 / Article / Tab 4

Research Article

Photobiomodulation by a 635nm Diode Laser on Peri-Implant Bone: Primary and Secondary Stability and Bone Density Analysis—A Randomized Clinical Trial

Table 4

Mean grayscale values of 2 groups at middle level.

PeriodLaserStd ControlStdt-valuedfp-value

4 weeks573.4220.96551.1734.351.92220.0685
12 weeks925.2539.87650.7529.8819.09220.0000

Std: standard deviation.
df: degree of freedom.

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