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

Basaline1209.2561.37828.4226.8819.69220.0000
4 weeks573.4220.96551.1734.351.92220.0685
12 weeks925.2539.87650.7529.8819.09220.0000

Std: standard deviation.
df: degree of freedom.

Article of the Year Award: Outstanding research contributions of 2020, as selected by our Chief Editors. Read the winning articles.