Have you tried a musical brush? Or maybe make it in to a game, who is the best at brushing their teeth, who can reach the back ones to make them shiny and clean then let her 'win' and give lots of praise. You could also get some books about brushing teeth to encourage her or use a sticker reward chart

I made it a game with my 20 month old. I approach her with one toothbrush while she's already brushing her own teeth making a noise like a metal detector or something, getting faster as I get closer. Then I jam the toothbrush into her mouth squealing beeping noises. She loves it. If she's difficult I throw her over my knee and make her laugh, then scrub them while her mouth is open.

pp, not that i can see.

Does she have any teeth coming through that's making it hurt to brush?

that's how i got her to start brushing her teeth. me and dh would brush our teeth in front of her. i dunno what happened or what i'm doing wrong. she went from letting us brush her teeth to only brushes her teeth herself to not wanting to brush her teeth anymore ☹️

i also tried a new toothbrush but she's still not interested ?

My daughter used to hate having her teeth brushed so I started doing her teeth at the same time as when my husband was brushing his. When she saw daddy was brushing his teeth too then she wanted to. Now anytime she she's any of us brushing our teeth she wants hers brushed too lol

My daughter only like to brush her teeth while I brush my teeth. I let her do it herself at first and then when I'm done I go over and do it for her.

Maybe she's just going through the stubborn stage lol. Try doing it with her, getting her a new toothbrush of her favourite character and new toothpaste? In childcare we made all the little ones her age and older want to brush their teeth by showing them cartoons and doing crafty activities that made them want to brush their teeth...I don't know what else to suggest!