title: SEM Study of apical morphological alterations in primary teeth with vital and necrotic pulps.
abstract: This study evaluated, by SEM, the morphology of human primary teeth roots. Twenty-four teeth were divided into 3 groups: pulp vitality (group I) and pulp necrosis without (group II) and with apical periodontitis (group III). Roots were analyzed by the presence of periodontal ligament (PDL) fibers and resorption areas. In groups I and II, presence of PDL fibers and absence of resorption were observed in all cases (100%), while all specimens (100%) of group III showed no PDL fibers and resorption areas. In conclusion, there are morphological differences in the apical region of primary teeth with different pulpal and periapical pathologies.
authors.affiliation: Department of Pediatric, Preventive and Community Dentistry, University of São Paulo, Ribeirão Preto, Brazil. lea@forp.usp.br
authors.forename: Léa Assed Bezerra
authors.initials: LA
authors.lastname: da Silva
authors.forename: Patrícia Motta
authors.initials: PM
authors.lastname: Fernandes
authors.forename: Raquel Assed Bezerra
authors.initials: RA
authors.lastname: da Silva
authors.forename: Paulo
authors.initials: P
authors.lastname: Nelson-Filho
authors.forename: Lenaldo Branco
authors.initials: LB
authors.lastname: Rocha
authors.forename: Marcos A
authors.initials: MA
authors.lastname: Rossi
mesh_terms: D002648:Child; D002675:Child, Preschool; D003782:Dental Pulp / Q000648:ultrastructure*; D005260:Female; D006801:Humans; D008297:Male; D008855:Microscopy, Electron, Scanning / Q000379:methods*; D009336:Necrosis; D010513:Periodontal Ligament / Q000648:ultrastructure; D014092:Tooth Root / Q000648:ultrastructure*; D014094:Tooth, Deciduous / Q000648:ultrastructure*