UNLABELLED Aortic root perforation is a potentially life-threatening complication that may occur during transseptal puncture and requires immediate repair. We present a 71-year-old man who was admitted for catheter ablation of persistent atypical atrial flutter. Fluoroscopic-guided transseptal puncture was performed to gain access to the left atrium. An unrecognized puncture of the aortic root ...

This study evaluates the amount of remaining tooth structure and possibility of producing lateral perforation following the use of different diameters of parallel-sided Parapost drills in groups of different canal curvatures (0 degrees-15 degrees, 16 degrees-25 degrees, 26 degrees <) in distal canals of first and second mandibular molar teeth. After enlargement of root canals using the crown-do...

INTRODUCTION The detection of possible root canal perforations caused during a metal post placement is frequently difficult to diagnose. The aim of this study was to investigate the accuracy of apex locators to diagnose such perforations. MATERIALS AND METHODS Thirty mesiolingual root canals of extracted mandibular molars were instrumented (30/.04) and a post space was prepared. A root canal ...

Amalgam, IRM, and a mineral trioxide aggregate were tested for repair of experimentally created root perforations. Fifty sound, extracted mandibular and maxillary molars were used in this study. A perforation was created on the mesial root surface at about a 45-degree angle to the long axis of each tooth. The tooth was then placed into a saline-soaked "Oasis" to simulate a clinical condition. A...

Root canal stripping is defined as an oblong, vertical perforation that appears especially in the middle section of curved root canals during endodontic treatments with nickel-titanium (Ni-Ti) instruments. Its occurrence may drastically affect the outcome of the treatment, transforming a common otherwise efficient endodontic procedure into a complication such as tooth extraction. In order to di...

Thank you for your attention to our study and wonderful questions. Our reply is as below. Question) The title of the article states that the case is about a glandular odontogenic cyst (GOC) mimicking am-eloblastoma. The history (slow expansion, no symptoms) and the radiographic appearance of the lesion (lobulated, well-defined margin, erosion and perforation of the lin-gual cortex, root resorpt...

BACKGROUND Different perforation rates for cervical pedicle screws by disease are expected in relation to bone quality and pedicle morphology; however, no report comparing pedicle screw perforation rate by disease had previously been published. This study investigated the perforation rates of pedicle screws inserted to cervical pedicle by disease and vertebral level using a CT-based navigation ...

introduction: adequate seal of iatrogenically perforated area within the root canal system can improve the long term treatment prognosis. this in vitro study evaluated the sealing ability of mineral trioxide aggregate (mta), calcium-enriched mixture (cem) cement and biodentine in repair of furcation perforation in primary molars. methods and materials: a total of 61 freshly extracted primary ma...

Central giant cell granuloma (CGCG) is described by the World Health Organization (WHO) as a localized and benign but sometimes aggressive lesion characterized by an osteolytic proliferation consisting of fibrous tissue with hemorrhage and hemosiderin deposits, the presence of osteoclastlike giant cells and reactive bone formation.1 Its etiology is unknown. Clinically, CGCG patients may present...