Odontogenic maxillary sinus disease: a cone-beam computed tomography surveillance.

The odontogenic maxillary sinus disease (endo-antral syndrome; EAS) is directly related to the spread of endodontic infections from upper premolars and molars with necrotic pulp. Cone-beam computed tomography (CBCT) images proved to be a reference diagnostic aid for detecting the etiological relationship between chronic apical periodontitis and maxillary sinusitis. There were retrospectively evaluated a total of 109 CBCT images (47 males and 62 females) from a pool of CBCT scans taken for routine diagnosis and treatment planning in consecutive 353 patients.

Incidence of the middle mesial canals in mandibular permanent molars in a Romanian population by cone-beam computed tomography.

Introduction: Untreated middle mesial canals (MMCs) of mandibular permanent molars can result in endodontic treatment failure.

Aim: The aim of this retrospective study was to investigate the incidence of MMC of mandibular molars in a Romanian population.

Patients, Materials And Methods: In total, there were evaluated 144 mandibular first permanent molars and 140 mandibular second permanent molars by using cone-beam computed tomography (CBCT) scans.

Middle mesial canal of the permanent mandibular first molars: an anatomical challenge directly related to the outcome of endodontic treatment.

To effectively clean and shape the mandibular permanent first molars it is mandatory to understand in detail their complex internal anatomy. The middle mesial canal is an additional canal located between the usual mesiobuccal and mesiolingual canals in the mesial root of mandibular first molars. The incidence of the middle mesial canal, its relationship with main canals of the mesial root and the possibility for it to be negotiated is an important practical issue in endodontics.

Occurrence of invasive cervical resorption after the completion of orthodontic treatment.

The invasive cervical resorption (ICR) is an irreversible and progressive loss of tooth hard tissues involving coronal and root dentine that usually affects single permanent teeth. The aim of this study was to present the pattern of ICR lesions detected in three patients with no contributory medical and dental anamnesis, at different time periods after orthodontic tooth movements. Conventional radiographs and cone-beam computed tomography (CBCT) images were obtained by X-Mind™ (Satelec), respective 3D Accuitomo (Morita).

An optical investigation of dentinal discoloration due to commonly endodontic sealers, using the transmitted light polarizing microscopy and spectrophotometry.

The aim of this study was to establish the degree of tooth crown staining by commonly used endodontic sealers. Crown discolorations by tooth canal sealers [AH Plus (Dentsply DeTrey Gmbh, Konstanz, Germany); Endofill (Produits Dentaires SA, Vevey, Switzerland); Apexit (Dentsply DeTrey Gmbh, Konstanz, Germany); and MTA Fillapex (Angelus, Londrina, Brazil)] were tested on extracted human premolars. The samples were divided into five groups of five samples each, after root canal sealing.

Endodontic treatment of a mandibular canine with two roots.

Lower canine is a tooth with a robust, long root and very good implantation, making it a valuable abutment tooth for any type of prosthetic treatment. In order to treat it conservatively and to prevent its loss from the dental arch it is necessary to accomplish a correct and complete endodontic treatment, which involves knowledge of all its morphological variation. The mandibular canine usually presents one root with a single large canal centrally located.