Hi,
I'm not a Doctor, so take this into consideration. My understanding of the term "squamous" refers to a flattening and thickening of tissue. It is a defining term for a variety of situations, only a few of them cancer.

The hyperplasia also refers to irritation. The words you really need to key on came from your oral surgeon; " NOT CANCER"

That's what we all want to hear most. You should keep an eye on it; pre-cancerous lesions that are detected and dealt with before they become cancers are easy; it's when the words "carcinoma" "sarcoma", "melanoma" start appearing in biopsy reports that things get..."busy"

Congratulations on NOT having Oral Cancer!
Wayne