Do budget dentists like western dental actually strap down toddlers when drilling and filling cavities?

I am livng on a very limited budget and my toddler needs major dental work. She has an appointment with Western Dental, but I can't imagine them giving her an injection in her mouth and drilling away as if she is an adult. I dont think I am comfortable with them strapping her to a chair. That sounds like the whole procedure would be traumatic. Do you think they will give her Nitris Oxide or sedate her to make this more bearable.