منابع مشابه
Removal of calcium hydroxide from Weine Type II systems using photon-induced photoacoustic streaming, passive ultrasonic, and needle irrigation: a microcomputed tomography study
Objective This study compared the effectiveness of Er:YAG laser-activated irrigation (PIPS), passive ultrasonic irrigation (PUI) with EndoUltra and standard needle irrigation (SNI) in the removal of calcium hydroxide [Ca(OH)2] from the mesial roots of Weine Type II mandibular molars. Material and Methods Thirty mandibular molars were screened by µCT for the presence of mesial roots with compl...
متن کاملRoot canal system in the mesiobuccal root of the maxillary first molar: an in vitro comparison study of computed tomography and histology.
OBJECTIVES The purpose of this study was to investigate a new diagnostic approach to the examination of the canal configuration of the mesiobuccal root of the maxillary first molar. MATERIALS AND METHODS High-resolution computed tomography (CT) was compared with histology in vitro. There were 152 teeth investigated and classified according to Weine and Vertucci. RESULTS CT describes the exa...
متن کاملApical anatomy in mesial and mesiobuccal roots of permanent first molars.
The purpose of this in vitro study was to investigate the canal configuration types, and the prevalence and location of anatomical variations in the mesiobuccal (MB) and mesial roots of permanent maxillary and mandibular first molars after instrumentation. The number and the type of canals were determined before instrumentation using conventional methods. All root canals from the 47 MB roots an...
متن کاملThe envelope of motion and Protaper Next
They found that utilisation of standard instruments in either reaming and/or filing produced preparations that were irregular in shape, and were not continuously tapering. The narrowest part of the canal, the so-called ‘elbow’, was located at a point coronal to the apex or foramen. In addition, the foramen often displayed transportation, which was called the ‘apical zip’. These characteristics ...
متن کاملCrassostrea gigas
Scientific names: Crassostrea gigas (Thunberg 1793), Ostreidae, Bivalvia Synonyms: Gryphaea angulata Lamarck 1819; Ostrea gigas Thunberg 1793; Ostrea laperousii Schrenk 1861; Ostrea talienwhanensis Crosse 1862. Note: The Portuguese oyster Crassostrea angulata is a name often used for this species. According to genetic studies it was shown that Crassostrea angulata is likely a strain of Crassost...
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ژورنال
عنوان ژورنال: Zeitschrift für Angewandte Chemie
سال: 1889
ISSN: 0044-8249,1521-3757
DOI: 10.1002/ange.18890020905