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Journal ArticleDOI

Root fractures due to corrosion Diagnostic aspects

01 Aug 1970-European Journal of Oral Sciences (Scand J Dent Res)-Vol. 78, Iss: 5, pp 397-403
TL;DR: 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.
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Journal ArticleDOI
TL;DR: Promising results after 2 to 3 years of clinical service indicate that this Composipost system can be a viable alternative to conventional post-and-core systems.
Abstract: Statement of problem. The Composipost dowel is made of stretched, aligned carbon fibers embedded in an epoxy-resin matrix. It is widely used in Europe and Canada for the restoration of endodontically treated teeth and was introduced in the United States 2 years ago as the C-Post dowel. Purpose. This retrospective study evaluated treatment outcome of the Composipost system after 2 to 3 years. Material and methods. A total of 236 patients treated during a 1-year period by seven Swedish dental practitioners were included. Of those, 146 patients consented and data were collected from the dental records of the remaining patients. Thus, the material comprised 236 teeth restored with carbon fiberreinforced epoxy resin post, 130 maxillary and 106 mandibular teeth, with a mean restoration time of 32 months (range 27 to 41). Periodontal conditions, radiographic signs, and prosthodontic results were recorded. Results. Five teeth (2%) had been extracted for reasons unrelated to the Composipost system. Periodontal conditions such as plaque accumulation, gingival health, bleeding on probing, and pocket depth around the teeth with Composipost dowels were similar to the control teeth. No dislodgment or root or post fractures were observed clinically or on radiographs. Radiographic examination of bone height measured from the apex to the bone margin mesially and distally showed differences on the mesial side but not on the distal surface ( p Conclusions. Promising results after 2 to 3 years of clinical service indicate that this system can be a viable alternative to conventional post-and-core systems. (J Prosthet Dent 1998;80:151-7.)

307 citations

Journal ArticleDOI
TL;DR: The maxillary second premolars and mesial roots of the mandibular molars were the most fractured teeth and the general practitioners correctly diagnosed vertical root fracture in only one-third of the 92 fractured teeth.

289 citations


Cites background or result from "Root fractures due to corrosion Dia..."

  • ...In VRF cases, the fistula may appear more toward the gingival margin, rather than apically oriented as in cases of failures of root canal treated teeth (9)....

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  • ...In one survey (9), 375 extracted vertically fractured teeth with relevant radiographs were evaluated....

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  • ...In a survey conducted by Rud and Omnell (9), extracted teeth due to VRFs were investigated....

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  • ...Such pockets have been previously described in cases of VRFs (10, I lL but their appearance probably depends on the extent and duration of the fracture (2, 9)....

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  • ...In this survey, pain was classified under one category, instead of fl)ur (discomfort, mixed or severe pain, pressure, or strange feeling) as in the previous survey (9)....

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Journal ArticleDOI
TL;DR: The aim of this paper is to review the current literature on the applications and limitations of CBCT, and make recommendations for the use ofCBCT in Endodontics.
Abstract: Cone beam computed tomography (CBCT) produces undistorted three-dimensional information of the maxillofacial skeleton, including the teeth and their surrounding tissues with a lower effective radiation dose than computed tomography. The aim of this paper is to: (i) review the current literature on the applications and limitations of CBCT; (ii) make recommendations for the use of CBCT in Endodontics; (iii) highlight areas of further research of CBCT in Endodontics.

286 citations

Journal ArticleDOI
TL;DR: A comparative study on the stress distribution in the dentine and cement layer of an endodontically treated maxillary incisor has been carried out by using Finite Element Analysis (FEA), finding the more stiff systems (steel and carbon posts) to work against the natural function of the tooth.

285 citations

Journal ArticleDOI
TL;DR: The results of this study support the use of 3D Accuitomo 170 for the detection of VRFs in endodontically treated teeth and suggest that the reproducibility and accuracy in VRF detection depend on the CBCT system used.

282 citations


Cites background from "Root fractures due to corrosion Dia..."

  • ...The mesiodistal fractures are almost impossible to detect with 2D radiographs because the x-ray beam must be within 4! of the fracture plane to allow detection ( 19 )....

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