Parvez, Ahmad Khan (2013) Comparative Evaluation of Tensile Bond Strength of Luting Cements with Effect of Abutment Angulation on Retention of Cement-Retained Implant Supported Restorations - An In Vitro Study. Masters thesis, Ragas Dental College & Hospital, Chennai.
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Abstract
PURPOSE : The objective of this in vitro study was to compare the tensile bond strength of three different luting cements on retention of cement retained implant-supported cast copings cemented on straight and 15° angulated titanium implant abutments. MATERIAL AND METHODS : A total of sixty (n-60) implant analogs, straight and 15°angulated titanium implant abutments of thirty (n-30) each were selected. The implant analogs were embedded vertically in autopolymerizing acrylic resin blocks. The abutments were fixed to the implant analogs. The cast copings with a loop on the occlusal surface were fabricated with Ni-Cr alloy. The cast copings were luted to implant abutments with three different cements namely zinc phosphate cement, glass ionomer cement, and dual cure resin cement. All the test samples were kept in distilled water at 37°C for 24 hours for aging. Tensile force was applied to separate the cast copings from the abutments and peak load to dislodgement was recorded, using universal testing machine. Statistical analyses were performed using One-wayANOVA test and multiple range Tukey- HSD procedure. RESULTS : The mean tensile bond strength of dual cure resin cement was significantly higher in both straight and 15°angulated titanium implant abutments (3.75±0.21, 3.35±0.07) respectively, followed by glass ionomer cement (2.34±0.04, 1.97±0.08) and the least value with zinc phosphate cement (2.08±0.12, 1.75±0.11). CONCLUSION : Dual cure resin cement exhibited the highest retentive value compared to glass ionomer cement and zinc phosphate cement with both types of abutments in this study. The cast copings cemented with the cements used in this study on straight titanium implant abutments exhibited higher retention compared to 15° angulated titanium implant abutments. The retention of cast copings are influenced by the type of luting cement and the type of implant abutment.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Implant abutments ; luting cements ; retention ; tensile bond strength. |
| Subjects: | DENTAL > Prosthodontics and Crown and Bridge |
| Depositing User: | Thavamani K |
| Date Deposited: | 11 Jul 2017 16:05 |
| Last Modified: | 12 Jul 2017 01:29 |
| URI: | http://repository-tnmgrmu.ac.in/id/eprint/1481 |
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