True. I have had a crown placed on the top back tooth and the dentist put it at a slant to take pressure off my tongue but the cusps feel sharp or too hard, maybe the shape, and the slant part sits on my tongue . It also irritates my cheek but no marks. I'm in a lot of pain. This is the second crown and I don't think he will do anything to fix it. He's also frustrated with not getting adequate results.