Hi, I'm a type one diabetic and terrified of going to the dentist, can I be sedated?

When I was younger I had an awful expirence with a dentist, he left me in so much pain for weeks that I was even too scared to brush me teeth. Because of this long period of time, my teeth are now so weak. I have chipped, broken, teeth, some are even what I can only call stumps. They are disgusting, I'm so Embarrassed I don't even feel comfotable letting the dentist look in my mouth. I rarely even smile. Will they be able to sedate me? I'm 23 now. HELP!