Final answer:
For primary herpetic gingivostomatitis caused by HSV-1, the recommended treatment includes control of secondary infections and possibly antiviral medications like acyclovir, famciclovir, or valacyclovir if necessary, not topical steroids, hydrogen peroxide, or cauterization.
Step-by-step explanation:
The treatment for primary herpetic gingivostomatitis, which is caused by herpes simplex virus type 1 (HSV-1), should focus on the control of secondary infections. This condition, which can be diagnosed through clinical examination and sometimes culture or biopsy, results in painful ulcers in the mouth. While it is usually self-limiting, immunocompromised patients might require treatment. The recommended approach for managing herpetic gingivostomatitis includes the use of mouthwashes, maintaining good oral hygiene, and antiviral medications such as acyclovir, famciclovir, or valacyclovir. It is important to note that topical steroids, application of dilute hydrogen peroxide, and cauterization are not standard treatments for this condition and can potentially worsen symptoms or delay healing.