During dental treatments, dental lasers are increasingly more common. One example is using a dental laser for sterilization during a root canal, thus reducing the risk of subsequent dental inflammation. Painful mouth ulcers and cold sores can heal faster, and implants can be exposed with minimal gum irritation. A dental laser also closes the blood vessels, which means minor bleeding can be avoided. And for patients with dental fear, a dental laser treatment is more comfortable: most drilling can be initially avoided, and often only a local anesthetic is required, if at all.