Hello Walter, thank you very much for your reply.
Here are my scans (I am comparing the results of the david laser scanner with photogrammetry, so you will see that the image on the left is of photogrammetry):

(Photogrammetry and laser scanning with Thorlabs camera 1645c 1280 x 1024 25fps)

(Photogrammetry and laser scanning with Microsoft cinema webcam 1280x720 10 fps)

(Photogrammetry and laser scanning with Thorlabs camera 1645c 1280 x 1024 25fps)

(Photogrammetry and laser scanning with Microsoft cinema webcam 800x448 15fps)

(Photogrammetry and laser scanning with Microsoft cinema webcam)
As you can see, the results obtained with laser scanning are not as good as the ones obtained with photogrammetry. But I am thinking that my problem maybe is one of these:
-I am using a red laser instead of a green one
-The thickness of my laser line is about 1 mm (the object is 5 cm of height, maybe the line should be of 0.5 mm)
-The fps? or the resolution? I tried different cameras: Thorlabs camera 1645c 1280 x 1024 25fps and a Microsoft cinema webcam 1280x720 10 fps. The results shows the same problem: the lines.
- Or it is like I told you before, the fact that I am passing the line multiple times (not quickly, but manually)
Hope you find the problem. Thanks!!