Cargando…
Fracture Strength of Flared Root Canals Restored with Different Post Systems
OBJECTIVE: To evaluate the fracture resistance of different intra-radicular post systems in flared root canals. METHODS: Sixty human canines were used. The coronal portion was removed and the root length was standardized at 17 mm. Canals were prepared and filled with gutta-percha/AH Plus sealer. Roo...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Kare Publishing
2017
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7757950/ https://www.ncbi.nlm.nih.gov/pubmed/33403333 http://dx.doi.org/10.14744/eej.2017.17009 |
_version_ | 1783626834035867648 |
---|---|
author | Gehrcke, Vanessa de Oliviera, Milene Aarestrup, Fernando do Prado, Maíra de Lima, Carolina Oliveira Campos, Celso Neiva |
author_facet | Gehrcke, Vanessa de Oliviera, Milene Aarestrup, Fernando do Prado, Maíra de Lima, Carolina Oliveira Campos, Celso Neiva |
author_sort | Gehrcke, Vanessa |
collection | PubMed |
description | OBJECTIVE: To evaluate the fracture resistance of different intra-radicular post systems in flared root canals. METHODS: Sixty human canines were used. The coronal portion was removed and the root length was standardized at 17 mm. Canals were prepared and filled with gutta-percha/AH Plus sealer. Roots were embedded in self-polymerising acrylic resin blocks. According to the material used, the teeth were randomly divided into three groups (n=20): glass fibre post (GFP): GFP and Z350 resin composite core; pre-fabricated metal post (PMP): PMP and Z350 resin composite core; and cast metal core (CMC): CMC with silver-tin alloy. Coronal reconstruction involved fabrication of metal copings. Samples were submitted to mechanical compression testing at 45º in a universal test machine. Fracture pattern was evaluated under a stereoscope. The fracture strength values were submitted to one-way analysis of variance (ANOVA) and Tukey tests (α=0.05). RESULTS: There was no statistically significant difference between the resistance values among groups (P=0.193). With regard to fracture pattern, GFP showed 55% and PMP 45% of Type I fractures, which considered repairable or favourable, whereas MCC presented 50% of Type V, which was considered irreparable or unfavourable. CONCLUSION: Glass fibre and pre-fabricated metal posts have good fracture resistance to compression and may be used for restoring flared root canals, since they presented fractures mainly involving the filling core, thus facilitating later repair. |
format | Online Article Text |
id | pubmed-7757950 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Kare Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-77579502021-01-04 Fracture Strength of Flared Root Canals Restored with Different Post Systems Gehrcke, Vanessa de Oliviera, Milene Aarestrup, Fernando do Prado, Maíra de Lima, Carolina Oliveira Campos, Celso Neiva Eur Endod J Original Article OBJECTIVE: To evaluate the fracture resistance of different intra-radicular post systems in flared root canals. METHODS: Sixty human canines were used. The coronal portion was removed and the root length was standardized at 17 mm. Canals were prepared and filled with gutta-percha/AH Plus sealer. Roots were embedded in self-polymerising acrylic resin blocks. According to the material used, the teeth were randomly divided into three groups (n=20): glass fibre post (GFP): GFP and Z350 resin composite core; pre-fabricated metal post (PMP): PMP and Z350 resin composite core; and cast metal core (CMC): CMC with silver-tin alloy. Coronal reconstruction involved fabrication of metal copings. Samples were submitted to mechanical compression testing at 45º in a universal test machine. Fracture pattern was evaluated under a stereoscope. The fracture strength values were submitted to one-way analysis of variance (ANOVA) and Tukey tests (α=0.05). RESULTS: There was no statistically significant difference between the resistance values among groups (P=0.193). With regard to fracture pattern, GFP showed 55% and PMP 45% of Type I fractures, which considered repairable or favourable, whereas MCC presented 50% of Type V, which was considered irreparable or unfavourable. CONCLUSION: Glass fibre and pre-fabricated metal posts have good fracture resistance to compression and may be used for restoring flared root canals, since they presented fractures mainly involving the filling core, thus facilitating later repair. Kare Publishing 2017-10-02 /pmc/articles/PMC7757950/ /pubmed/33403333 http://dx.doi.org/10.14744/eej.2017.17009 Text en Copyright: © 2020 European Endodontic Journal http://creativecommons.org/licenses/by-nc/4.0 This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License |
spellingShingle | Original Article Gehrcke, Vanessa de Oliviera, Milene Aarestrup, Fernando do Prado, Maíra de Lima, Carolina Oliveira Campos, Celso Neiva Fracture Strength of Flared Root Canals Restored with Different Post Systems |
title | Fracture Strength of Flared Root Canals Restored with Different Post Systems |
title_full | Fracture Strength of Flared Root Canals Restored with Different Post Systems |
title_fullStr | Fracture Strength of Flared Root Canals Restored with Different Post Systems |
title_full_unstemmed | Fracture Strength of Flared Root Canals Restored with Different Post Systems |
title_short | Fracture Strength of Flared Root Canals Restored with Different Post Systems |
title_sort | fracture strength of flared root canals restored with different post systems |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7757950/ https://www.ncbi.nlm.nih.gov/pubmed/33403333 http://dx.doi.org/10.14744/eej.2017.17009 |
work_keys_str_mv | AT gehrckevanessa fracturestrengthofflaredrootcanalsrestoredwithdifferentpostsystems AT deolivieramilene fracturestrengthofflaredrootcanalsrestoredwithdifferentpostsystems AT aarestrupfernando fracturestrengthofflaredrootcanalsrestoredwithdifferentpostsystems AT dopradomaira fracturestrengthofflaredrootcanalsrestoredwithdifferentpostsystems AT delimacarolinaoliveira fracturestrengthofflaredrootcanalsrestoredwithdifferentpostsystems AT camposcelsoneiva fracturestrengthofflaredrootcanalsrestoredwithdifferentpostsystems |