Carlos Eduardo Fontana

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INTRODUCTION Effective removal of gutta-percha in endodontic retreatment is a significant factor to ensure a favorable outcome from failed procedures. The purpose of this study was to evaluate the efficacy of a nickel-titanium rotary instrument system with or without a solvent versus stainless steel hand files for gutta-percha removal. METHODS Forty(More)
INTRODUCTION Nickel-titanium rotary instruments reduce procedural errors and the time required to finish root canal preparation. The goal of this study was to evaluate the occurrences of apical transportation and canal aberrations produced with different instruments used to create a glide path in the preparation of curved root canals, namely manual K-files(More)
INTRODUCTION The purpose of this study was to evaluate the relationship between periapical status and the quality of coronal restoration and of root canal filling, assessed both clinically and radiographically, in a cohort of Brazilian patients. METHODS A total of 523 teeth from 337 patients submitted to endodontic treatment were clinically and(More)
INTRODUCTION The aim of this in vitro study was to evaluate the effects of establishing glide path on the centering ability and preparation time of two single-file reciprocating systems in mesial root canals of mandibular molars. METHODS AND MATERIALS Sixty extracted mandibular molars with curvatures of 25-39 degrees and separate foramina for the(More)
INTRODUCTION Cleaning and shaping without making procedural errors have always been a challenge in endodontics, particularly when the root canals are curved. Several rotary instruments have been developed to minimize such errors. The purpose of this study was to compare the shaping ability of 2 rotary file systems, BioRace (BR; FKG, La Chaux-de-Fonds,(More)
Fontana, Carlos Eduardo; Macedo Ibanéz, Carolina Davoli; Davini, Felipe; Sigrist De Martin, Alexandre; Fernandes de Magalhães Silveira, Cláudia; Guimarães Pedro Rocha, Daniel; da Silveira Bueno, Carlos Eduardo Endodontic therapy of maxillary second molar showing an unusual internal anatomy RSBO Revista Sul-Brasileira de Odontologia, vol. 9, núm. 2,(More)
External root resorption may occur as a consequence of trauma, orthodontic treatment, bacterial infection or incomplete sealing of the root canal system (bacterial re-infection), and lead to crater formation on the resorbed apex. This would deform the root apex surface, and cause loss of apical constriction. Depending on the extent of the resorptive(More)
OBJECTIVES The aim of this in vivo study was to assess the accuracy of 2 third-generation electronic apex locators (EALs), Propex II (Dentsply Maillefer) and Root ZX II (J. Morita), and radiographic technique for locating the major foramen (MF). MATERIALS AND METHODS Thirty-two premolars with single canals that required extraction were included. Following(More)
INTRODUCTION Reciprocating instruments were developed to improve and simplify the preparation of the root canal system by allowing greater centralization of the canal and requiring a shorter learning curve. Despite the risk of instrument separation, using a reciprocating instrument in more than 1 case is a relatively common clinical practice. The aim of(More)
INTRODUCTION The aim of this prospective study was to evaluate the postoperative pain that followed root canal treatments performed with a single-file reciprocating system on asymptomatic uniradicular necrotic teeth with and without foraminal enlargements (FEs). METHODS Forty-six volunteers were randomly divided into 2 groups according to the established(More)