Journal ArticleDOI
Root fractures due to corrosion Diagnostic aspects
JøRGEN Rud,Karl-Ake Omnell +1 more
TLDR
A series of 468 teeth with root fractures was evaluated to determine the clinical and radiographic criteria which may be used in diagnosing these fractures, mainly caused by corrosion of root canal pins and/or posts.Abstract:
— A series of 468 teeth with root fractures, mainly caused by corrosion of root canal pins and/or posts, was evaluated to determine the clinical and radiographic criteria which may be used in diagnosing these fractures. The fractures could be seen directly in a radiograph in only one-third of the cases. Indirectly, evidence of a fracture could be demonstrated radiographically by the presence of corrosion products from the pin or post or by dissolution of the pin in 71.8 % of the cases. Marginal pocket formation, a widening, or blurring of the periodontal space was observed in 79.8% of the cases. In 53.8 % an apical radiolucency was present, whereas 10 cases (2.7 %) showed no radio-graphic signs. The findings emphasize the importance of always considering the possibility of a root fracture when dealing with teeth containing pins, posts, and crowns.read more
Citations
More filters
Cone Beam Computed Tomography (CBCT) artifact characterization of root canal filling materials
TL;DR: Root canal filling materials generate CBCT imaging artifacts that mimic VRF or insufficient condensation, and Artifact is characterized by the radiolucent lines extending beyond the root dentin outlines, which is inconsistent with VRF.
Journal ArticleDOI
Detection of vertical root fractures by cone-beam computed tomography based on deep learning.
TL;DR: In this article , the performance of ResNet models in the detection of in vitro and in vivo vertical root fractures (VRF) in Cone-beam Computed Tomography (CBCT) images was evaluated.
Journal ArticleDOI
Effect of Different Esthetic Post-Core Materials on Color of Direct-Composite Restorations: A Preliminary Clinical Study.
TL;DR: Definitive restorations were equally affected by the 2 materials, and both materials can be used reliably in clinical practice.
Journal ArticleDOI
Influence of previous restoration of the tooth on prognosis of crowns with dowels: R. NÄPÄNKANGAS et al.
TL;DR: It seems that the previous restoration has no marked effect on the prognosis of crowns with dowels when studying a composite resin restoration with screw post and a one-piece dowel crown.
Journal ArticleDOI
Casting and microstructure of post and core at different mold temperatures.
TL;DR: The microstructure and bonding between the wrought and cast elements of the post and core specimens were evaluated with respect to the preheating temperature of the investment and indicated that recrystallization of the wrought wire was initiated at 700 degrees C for one type of specimen.