About 7 years ago i had an allergic reaction to latex during a dentist appointment. would i still be allergic today? i want to use latex condoms.

Maybe OK, but...: Prople often outgrow allergies. The only way to know is to be exposed and see what happens. Or use polyurethane condoms, which many people prefer anyway (thinner, more sensitive). Or you cut a half inch square from a latex condom, and put it on your skin (e.g. abdomen) for a few hours, taped in place, and see if you react (redness, itching, etc).