On 2014 Feb 02, Jan Tunér commented:

This conclusion of this study must be questioned. Not only that a 10 W laser poses a much higher risk of burning and eye injury and is more expensive than a class 3B laser - a Class 3B laser is quicker! The high output forces a sweeping motion or irradiation from a distance, thereby causing a lot of energy loss at the deep target. The time spent was 5 minutes, which is more than required by a conventional Class 3B session for this condition. With a 3B laser in firm contact over tender points and a sweeping motion over the actual condyle, more energy at target can be applied in 2-3 minutes. The authors of the paper above swept over an area of 45 cm2. By spreading the light over a large area, using a wide beam area and irradiating from a distance, the dose became 6.6 J/cm2 and the power density only 22 mW/cm2, which is very low. Irradiating in contact with 10 W is not possible, but with a 3B laser in firm contact, an optimal penetration is achieved and less time is required.

On 2014 Feb 02, Jan Tunér commented:

This conclusion of this study must be questioned. Not only that a 10 W laser poses a much higher risk of burning and eye injury and is more expensive than a class 3B laser - a Class 3B laser is quicker! The high output forces a sweeping motion or irradiation from a distance, thereby causing a lot of energy loss at the deep target. The time spent was 5 minutes, which is more than required by a conventional Class 3B session for this condition. With a 3B laser in firm contact over tender points and a sweeping motion over the actual condyle, more energy at target can be applied in 2-3 minutes. The authors of the paper above swept over an area of 45 cm2. By spreading the light over a large area, using a wide beam area and irradiating from a distance, the dose became 6.6 J/cm2 and the power density only 22 mW/cm2, which is very low. Irradiating in contact with 10 W is not possible, but with a 3B laser in firm contact, an optimal penetration is achieved and less time is required.