lip pits (congenital lip fistulas), n.pl the congenital depressions, usually bilateral and symmetrically placed, on the vermilion portion of the lower lip. These pits may be circular or may be present as a transverse slit. The depression represents a blind fistula that penetrates downward into the lower lip to a depth of 0.5 to 2.5 cm. They often exude viscid saliva on pressure.
This resulted in the introduction of three new laser classes (1M, 2M and 3R) and the abolition of Class 3A. Below is a brief description of each of the current laser classes. The 60825-1 standards apply equally to lasers and LEDs. In most places we have used the word laser, but it can be replaced by LED. Generally speaking LEDs would be in the lower Classes (1, 1M, 2, 2M, 3R), but very exceptionally may be Class 3B.
Stimulated Nerve Function: Laser photon exposure speeds the process of nerve cell reconnect ion to bring the numb areas back to life. Pain Reduction: Almost all systems have a mode of operation specifically designed to reduce pain. Classes of Cold Lasers. The U.S. government classifies cold lasers based on their ability to do eye damage. Many manufacturers are pushing the power levels to the maximum as a marketing tool. It is true that power is a very important part of laser therapy but more power is not always better. Class 1 lasers are the safest lasers.