Fracture resistance of metal-ceramic crown copings cemented to two types of intra-radicular posts
Abstract Introduction Endodontically treated teeth are more susceptible to root fracture than vital teeth. In order to reduce the risk of fracture, the use of intra-radicular posts and crowns is indicated. However, their own fracture resistance remains unclear. Objective To analyze the behavior...
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| Format: | Article |
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Universidade Estadual Paulista
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| Series: | Revista de Odontologia da UNESP |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-25772018000500305&lng=en&tlng=en |
| _version_ | 1811268616230797312 |
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| author | Priscila Alonso HENRIQUES André Hayato SAGUCHI Fábio Valverde Rodrigues BASTOS NETO Igor PROKOPOWITSCH Angela Toshie ARAKI |
| author_facet | Priscila Alonso HENRIQUES André Hayato SAGUCHI Fábio Valverde Rodrigues BASTOS NETO Igor PROKOPOWITSCH Angela Toshie ARAKI |
| author_sort | Priscila Alonso HENRIQUES |
| collection | DOAJ |
| description | Abstract Introduction Endodontically treated teeth are more susceptible to root fracture than vital teeth. In order to reduce the risk of fracture, the use of intra-radicular posts and crowns is indicated. However, their own fracture resistance remains unclear. Objective To analyze the behavior of metal-ceramic crown copings cemented to two types of intra-radicular posts under tensile stress. Material and method Sixteen metal-ceramic crown copings cemented with zinc phosphate cement to cast metal posts and cores (group 1, n = 8) or with self-adhesive resin cement to glass-fiber posts rebased with composite resin (group 2, n = 8) were subjected to tensile testing after endodontic treatment and standardized preparation. Failure occurred when the crown coping and/or post-core assembly fractured and/or detached. Result In group 1, after the application of a mean tensile load of 46.83 N, 7 crown copings and metal cores separated as a whole, while in 1 specimen the coping detached from the metal core. In group 2, a mean tensile load of 127.68 N resulted in glass-fiber post fracture, and in 1 case the entire crown-post-core assembly was detached. Tensile strength differed significantly between the two groups (p = 0.0085). Conclusion Our findings suggest that metal-ceramic crown copings cemented with self-adhesive resin cement show strong adhesion to composite resin cores associated with glass-fiber posts, thus providing a safe alternative to the use of cast metal posts and cores. |
| first_indexed | 2024-04-12T21:26:09Z |
| format | Article |
| id | doaj.art-b8d45c3a7b184656bb0f61c97b65903e |
| institution | Directory Open Access Journal |
| issn | 1807-2577 |
| language | English |
| last_indexed | 2024-04-12T21:26:09Z |
| publisher | Universidade Estadual Paulista |
| record_format | Article |
| series | Revista de Odontologia da UNESP |
| spelling | doaj.art-b8d45c3a7b184656bb0f61c97b65903e2022-12-22T03:16:10ZengUniversidade Estadual PaulistaRevista de Odontologia da UNESP1807-257747530530810.1590/1807-2577.09218S1807-25772018000500305Fracture resistance of metal-ceramic crown copings cemented to two types of intra-radicular postsPriscila Alonso HENRIQUESAndré Hayato SAGUCHIFábio Valverde Rodrigues BASTOS NETOIgor PROKOPOWITSCHAngela Toshie ARAKIAbstract Introduction Endodontically treated teeth are more susceptible to root fracture than vital teeth. In order to reduce the risk of fracture, the use of intra-radicular posts and crowns is indicated. However, their own fracture resistance remains unclear. Objective To analyze the behavior of metal-ceramic crown copings cemented to two types of intra-radicular posts under tensile stress. Material and method Sixteen metal-ceramic crown copings cemented with zinc phosphate cement to cast metal posts and cores (group 1, n = 8) or with self-adhesive resin cement to glass-fiber posts rebased with composite resin (group 2, n = 8) were subjected to tensile testing after endodontic treatment and standardized preparation. Failure occurred when the crown coping and/or post-core assembly fractured and/or detached. Result In group 1, after the application of a mean tensile load of 46.83 N, 7 crown copings and metal cores separated as a whole, while in 1 specimen the coping detached from the metal core. In group 2, a mean tensile load of 127.68 N resulted in glass-fiber post fracture, and in 1 case the entire crown-post-core assembly was detached. Tensile strength differed significantly between the two groups (p = 0.0085). Conclusion Our findings suggest that metal-ceramic crown copings cemented with self-adhesive resin cement show strong adhesion to composite resin cores associated with glass-fiber posts, thus providing a safe alternative to the use of cast metal posts and cores.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-25772018000500305&lng=en&tlng=enTécnica para retentor intrarradicularcimentos de resinaresistência à tração |
| spellingShingle | Priscila Alonso HENRIQUES André Hayato SAGUCHI Fábio Valverde Rodrigues BASTOS NETO Igor PROKOPOWITSCH Angela Toshie ARAKI Fracture resistance of metal-ceramic crown copings cemented to two types of intra-radicular posts Revista de Odontologia da UNESP Técnica para retentor intrarradicular cimentos de resina resistência à tração |
| title | Fracture resistance of metal-ceramic crown copings cemented to two types of intra-radicular posts |
| title_full | Fracture resistance of metal-ceramic crown copings cemented to two types of intra-radicular posts |
| title_fullStr | Fracture resistance of metal-ceramic crown copings cemented to two types of intra-radicular posts |
| title_full_unstemmed | Fracture resistance of metal-ceramic crown copings cemented to two types of intra-radicular posts |
| title_short | Fracture resistance of metal-ceramic crown copings cemented to two types of intra-radicular posts |
| title_sort | fracture resistance of metal ceramic crown copings cemented to two types of intra radicular posts |
| topic | Técnica para retentor intrarradicular cimentos de resina resistência à tração |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-25772018000500305&lng=en&tlng=en |
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