Occurrence of hypodontia, supernumerary teeth and dental anomalies in Brazilian individuals with Down syndrome - Mellara, Talitha de Siqueira; Pardini, Luiz Carlos; Nelson Filho, Paulo; Silva, Raquel Assed Bezerra da; Silva, Lea Assed Bezerra da; Queiroz, Alexandra Mussolino de (Journal of Disability and Oral Health, 2011)