[1
]
Department of Endodontics Restorative Dentistry, Federal University of Paraiba, Paraiba,
Brazil. Electronic address: fabioendodontia@gmail.com.
[2
]
Department of Endodontics, University Center of João Pessoa, Paraiba, Brazil.
[3
]
Department of Endodontics Restorative Dentistry, Federal University of Paraiba, Paraiba,
Brazil.
[4
]
Odontologic Center of Studies and Research, João Pessoa, Paraiba, Brazil.
[5
]
Department Statistics, Federal University of Paraiba, Paraiba, Brazil.