Scales for pain assessment in cervical dentin hypersensitivity: a comparative study oleh Bethânia Lara Silveira Freitas, Marina de Souza Pinto, Evandro Silveira de Oliveira, Dhelfeson Willya Douglas-de-Oliveira, Endi Lanza Galvão, Patricia Furtado Gonçalves, Olga Dumont Flecha, Paulo Messias de Oliveira Filho