In Vitro Evaluation Of The Ferrule Effect And Post Material On Failure Load And Mode In Endodontically Treated Teeth
| dc.contributor.author | Abbas, Mahmood Alayham | |
| dc.date.accessioned | 2018-07-24T07:34:08Z | |
| dc.date.available | 2018-07-24T07:34:08Z | |
| dc.date.issued | 2012-03 | |
| dc.description.abstract | There are still controversy regarding the ferrule effect and a better bonded prefabricated posts on strength of endodontically treated teeth. The aim of this study was to compare the effect of ferrule and two types of bonded post material on failure load and failure mode of restored endodontically treated teeth. Sixty eight extracted maxillary central incisors were sectioned 15 ± 0.1mm coronal to the root apex using hard tissue cutter (Exakt, Germany) and high speed handpiece. They were then endodontically instrumented using step-back technique with master apical file size 45 and obturated with gutta percha (Meta Dental Co. Ltd, Korea) and sealed with AH 26 (Dentsply Maillefer, Germany) using lateral condensation technique. Post spaces were then prepared using Gates-Glidden rotary instrument to remove gutta percha leaving 5mm from the apex, followed by Tenax drills (Coltene Whaledent, USA) up to size 1.3mm in diameter to enlarge the canals. Samples were randomly divided into four groups of 17 where Group A was placed with titanium post (Tenax post, Coltene Whaledent, USA) without ferrule preparation; Group B placed with titanium post and 2mm ferrule preparation; Group C placed with glass fiber reinforced composite post (Tenax fiber white post, Coltene Whaledent, USA) without ferrule preparation and Group D placed with glass fiber reinforced composite post and 2mm ferrule preparation. All posts were cemented using Panavia F (Kuraray Medical Inc., Japan), before the core was built with Paracore (Coltene Whaledent, USA) and standardise the size using paraform coreformer #1. Crowns were then fabricated using Ni-Cr where the length of each sample with the crown in place was 23 ± 0.1mm, checked using a digital calliper. Crowns were cemented using Ketac- Cem (3M ESPE, Germany). Four metal blocks were used to hold the specimens during mechanical testing. Each block had a drilled cylindrical hole with a different diameter (5.5mm, 6.5mm, 7.5mm and 8.5mm) so as to accommodate to different specimens’ widths with rubber silicon impression material injected to simulate the periodontal ligament. A universal testing machine (Instron 3366, USA) was used for the mechanical testing by applying a compressive load at a crosshead speed of 1mm/min at an angle of 135º to the long axis of the sample until failure. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/6014 | |
| dc.language.iso | en | en_US |
| dc.publisher | Universiti Sains Malaysia | en_US |
| dc.subject | In vitro evaluation of the ferrule effect and post material | en_US |
| dc.subject | on failure load and mode in endodontically treated teeth | en_US |
| dc.title | In Vitro Evaluation Of The Ferrule Effect And Post Material On Failure Load And Mode In Endodontically Treated Teeth | en_US |
| dc.type | Thesis | en_US |
Files
License bundle
1 - 1 of 1
Loading...
- Name:
- license.txt
- Size:
- 1.71 KB
- Format:
- Item-specific license agreed upon to submission
- Description: