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dc.contributor.authorMattuella, Letícia Grando-
dc.contributor.authorMazzoccato, Gina-
dc.contributor.authorVier, Fabiana Vieira-
dc.contributor.authorSó, Marcus Vinicius Reis-
dc.date.accessioned2012-05-11T20:18:55Z-
dc.date.available2012-05-11T20:18:55Z-
dc.date.issued2005-
dc.identifier.issn0103-6440en_US
dc.identifier.urihttp://hdl.handle.net/10923/1011-
dc.description.abstractIn the present study, periapical radiographs were analyzed to investigate the number of canals of the buccal root of maxillary 1st premolars with longitudinal sulcus, and compare the number of apical foramina observed on the radiographs to that revealed by scanning electron microscopy (SEM). Thirty-nine human maxillary 1st premolars had their crowns and palatal roots removed and the root canals (C) were explored with endodontic files until the tip of the instrument was visualized exiting the apical foramen/foramina (AF). Radiographs were taken with files inside the root canals and the specimens were classified as follows: 1C/1AF; 2C/2AF; 1C/2AF; 2C/1AF. Apices were examined under SEM and the number of apical foramina (considering those measuring >80 µm in diameter) was recorded. Only 17.1% (n=6) of the specimens had 1C/1AF; 77.2% (n=27) had 2AF in which 42.9% (n=15) had 2C and 34.3% (n=12) had 1C; 5.7% (n=2) had 2C/1AF. SEM examinations showed that 46.1% (n=18) of the specimens had 2AF; 23.1% (n=9) had 1AF; 23.1% (n=9) had 3AF; 7.7% (n=3) had 4AF. Radiographic and SEM findings for the number of AF coincided in 62.8% of the cases. A buccal longitudinal sulcus in the maxillary 1st premolar is usually accompanied by total bifurcation (42.9%) or apical bifurcation (34.3%) of the root canal. SEM identified a statistically higher number of apical foramina than radiographs (p<0.01).en_US
dc.language.isoen_USen_US
dc.publisherFundação Odontológica de Ribeirão Preto / Dental Foundation of Ribeirão Pretoen_US
dc.subjectROOT CANALSen_US
dc.subjectAPICAL FORAMINASen_US
dc.subjectMAXILLARY 1ST PREMOLARen_US
dc.subjectLONGITUDINAL ROOT SULCUSen_US
dc.subjectSCANNING ELECTRON MICROSCOPYen_US
dc.subjectODONTOLOGIAen_US
dc.subjectCANAL RADICULARen_US
dc.titleRoot canals and apical foramina of the buccal root of maxillary first premolars with longitudinal sulcusen_US
dc.typearticleen_US
dc.identifier.doi10.1590/S0103-64402005000100004en_US
dc.jtitleBrazilian Dental Journalen_US
dc.publication.date2005en_US
dc.volume16en_US
dc.issue1en_US
dc.spage23en_US
dc.epage29en_US
Aparece nas Coleções:Artigo de Periódico

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