Read a general discussion on HPV and oral sex at http://www.ashastd.org/phpbb/viewtopic.php?t=212
I have HPV and I was wondering if I don't have any warts in my mouth, is it okay for me to perform oral sex on an uninfected girl without transmitting the disease?
HPV is a site-specific skin infection, so HPV located in one's genital skin is not transmitted by giving someone oral sex. It might be possible to contract oral HPV by performing oral sex on a partner with genital virus, but the exact risk is not well understood. The HPV types associated with genital skin don't seem to cause oral symptoms very often that are detected clinically, but it's a good idea not to perform oral sex on a partner while any lesions are present.
Hope this helps,