Bond strength of three types of fiber posts to three regions of root canal dentin
"nBackground and Aim: Debonding is the most common failure type of fiber posts. This in vitro study aimed to evaluate the bond strength of 3 different fiber posts cemented with a resin luting agent in three regions of prepared post spaces after being subjected to termocycling. "nMa...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | fas |
| Published: |
Tehran University of Medical Sciences
2009-08-01
|
| Series: | Journal of Dental Medicine |
| Subjects: | |
| Online Access: | http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/13903.pdf&manuscript_id=13903 |
| _version_ | 1818844346018955264 |
|---|---|
| author | Nokar S. Dorriz H. Hajimiragha H. Shamashyan N. |
| author_facet | Nokar S. Dorriz H. Hajimiragha H. Shamashyan N. |
| author_sort | Nokar S. |
| collection | DOAJ |
| description | "nBackground and Aim: Debonding is the most common failure type of fiber posts. This in vitro study aimed to evaluate the bond strength of 3 different fiber posts cemented with a resin luting agent in three regions of prepared post spaces after being subjected to termocycling. "nMaterials and Methods Thirty six mandibular first premolars were sectioned at the cemento-enamel junction and were treated endodontically. After one week the post spaces were prepared and roots were divided into 3 groups of 12 specimens according to the post types (D.T.Composipost, D.T.White, D.T.Light). Sealbond Cement Dual II was used in all groups. One day after cementation, specimens were subjected to 3500 thermal cycles (5oC/55oC). Each root was then embedded in acrylic resin and sectioned perpendicular to long axis. Three 1-mm tick segments from apical, middle and cervical thirds were prepared. Push out test was performed. Data were analyzed with 2-way ANOVA (P<0.05). All root segments and dislodged posts were observed with stereomicroscope to figure out their failure modes. "nResults: The post type had no significant effect on bond strength (p=0.08). However bond strength at the coronl segment was higher than the other segments (p=0.005). Mixed mode was the mostly occurred failure mode with D.T.Composipost and D.T.Light but with D.T.White, the mostly occurred failure mode was adhesive between the post and cement. "nConclusion: Different fiber posts have relatively similar bond strength to root dentin, bond strength at the coronl segment was higher than the other segments. |
| first_indexed | 2024-12-19T05:12:18Z |
| format | Article |
| id | doaj.art-5f03fdc061ff4f429961e30201d9926f |
| institution | Directory Open Access Journal |
| issn | 1024-641X 2008-2444 |
| language | fas |
| last_indexed | 2024-12-19T05:12:18Z |
| publishDate | 2009-08-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | Journal of Dental Medicine |
| spelling | doaj.art-5f03fdc061ff4f429961e30201d9926f2022-12-21T20:34:47ZfasTehran University of Medical SciencesJournal of Dental Medicine1024-641X2008-24442009-08-012211926Bond strength of three types of fiber posts to three regions of root canal dentinNokar S.Dorriz H.Hajimiragha H.Shamashyan N."nBackground and Aim: Debonding is the most common failure type of fiber posts. This in vitro study aimed to evaluate the bond strength of 3 different fiber posts cemented with a resin luting agent in three regions of prepared post spaces after being subjected to termocycling. "nMaterials and Methods Thirty six mandibular first premolars were sectioned at the cemento-enamel junction and were treated endodontically. After one week the post spaces were prepared and roots were divided into 3 groups of 12 specimens according to the post types (D.T.Composipost, D.T.White, D.T.Light). Sealbond Cement Dual II was used in all groups. One day after cementation, specimens were subjected to 3500 thermal cycles (5oC/55oC). Each root was then embedded in acrylic resin and sectioned perpendicular to long axis. Three 1-mm tick segments from apical, middle and cervical thirds were prepared. Push out test was performed. Data were analyzed with 2-way ANOVA (P<0.05). All root segments and dislodged posts were observed with stereomicroscope to figure out their failure modes. "nResults: The post type had no significant effect on bond strength (p=0.08). However bond strength at the coronl segment was higher than the other segments (p=0.005). Mixed mode was the mostly occurred failure mode with D.T.Composipost and D.T.Light but with D.T.White, the mostly occurred failure mode was adhesive between the post and cement. "nConclusion: Different fiber posts have relatively similar bond strength to root dentin, bond strength at the coronl segment was higher than the other segments.http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/13903.pdf&manuscript_id=13903Fiber postBond strengthResin cement |
| spellingShingle | Nokar S. Dorriz H. Hajimiragha H. Shamashyan N. Bond strength of three types of fiber posts to three regions of root canal dentin Journal of Dental Medicine Fiber post Bond strength Resin cement |
| title | Bond strength of three types of fiber posts to three regions of root canal dentin |
| title_full | Bond strength of three types of fiber posts to three regions of root canal dentin |
| title_fullStr | Bond strength of three types of fiber posts to three regions of root canal dentin |
| title_full_unstemmed | Bond strength of three types of fiber posts to three regions of root canal dentin |
| title_short | Bond strength of three types of fiber posts to three regions of root canal dentin |
| title_sort | bond strength of three types of fiber posts to three regions of root canal dentin |
| topic | Fiber post Bond strength Resin cement |
| url | http://journals.tums.ac.ir/PdfMed.aspx?pdf_med=/upload_files/pdf/13903.pdf&manuscript_id=13903 |
| work_keys_str_mv | AT nokars bondstrengthofthreetypesoffiberpoststothreeregionsofrootcanaldentin AT dorrizh bondstrengthofthreetypesoffiberpoststothreeregionsofrootcanaldentin AT hajimiraghah bondstrengthofthreetypesoffiberpoststothreeregionsofrootcanaldentin AT shamashyann bondstrengthofthreetypesoffiberpoststothreeregionsofrootcanaldentin |