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https://ptsldigital.ukm.my/jspui/handle/123456789/457461Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | Natasya Ahmad Tarib, Dr. | - |
| dc.contributor.author | Huda Pison (P57831) | - |
| dc.date.accessioned | 2023-09-12T04:06:55Z | - |
| dc.date.available | 2023-09-12T04:06:55Z | - |
| dc.date.issued | 2013-12-26 | - |
| dc.identifier.other | ukmvital:80496 | - |
| dc.identifier.uri | https://ptsldigital.ukm.my/jspui/handle/123456789/457461 | - |
| dc.description | The aim of this study is to evaluate the influence of different barometric pressures on the shear bond strength of veneering ceramic to zirconia and metal. Sixty specimens were prepared according to manufacturer’s instruction and were divided into two groups, zirconia and metal. The specimens were further divided into three subgroups of different barometric pressures (n=10), which are control, hyperbaric and hypobaric. Corresponding veneering ceramics with the size of 4 mm X 4.5 mm were fabricated on zirconia and metal discs with the size of 14 mm X 4 mm. The specimens were then pretreated with barometric conditions in hyperbaric and hypobaric chambers. Shear bond strength test was carried out using a semicircular knife-edge jig at 0.5 mm/min crosshead speed. Mean shear bond strength for all groups range from 17 to 27 MPa. Group ZHo showed the highest mean shear bond strength (26.76 ± 7.37 MPa), while group MHo showed the lowest mean shear bond strength (17.02 ± 6.08 MPa). Statistical analysis showed that there was no significant difference in shear bond strength for groups condition and coping material alone (p>0.05). On the other hand, there was statistically significant interaction of condition and coping material (p<0.05). Tukey’s post hoc test revealed there was no significant difference between all groups except for zirconia and metal in hypobaric condition (p<0.05). Microscopic examination showed mixed adhesive/cohesive failure for most of the specimens. In conclusion, there was significant difference on the shear bond strength of veneering ceramic to coping materials and barometric conditions (p<0.05).,Tujuan kajian dijalankan adalah bagi mengkaji kesan perubahan tekanan barometrik terhadap kekuatan sisihan perlekatan venir seramik kepada zirkonia dan logam. Enam puluh spesimen telah disediakan mengikut arahan pihak pengeluar dan dibahagikan kepada dua kumpulan, iaitu zirkonia dan logam. Spesimen-spesimen tersebut seterusnya dibahagikan lagi kepada tiga subkumpulan mengikut tekanan barometrik yang berlainan (n=10), iaitu kawalan, hyperbaric dan hypobaric. Venir seramik yang bersesuaian, bersaiz 4 mm X 4.5 mm telah dibina di atas disk zirkonia dan logam yang bersaiz 14 mm X 4 mm. Kemudian, spesimen-spesimen tersebut dirawat dengan keadaan barometrik di dalam kebuk hyperbaric dan hypobaric. Ujian kekuatan sisihan perlekatan telah dijalankan menggunakan jig mata pisau separa bulat pada kelajuan crosshead 0.5 mm/min. Min kekuatan sisihan perlekatan bagi semua kumpulan adalah di antara 17 hingga 27 MPa. Kumpulan ZHo menunjukkan min kekuatan sisihan perlekatan tertinggi (26.76 ± 7.37 MPa), manakala kumpulan MHo menunjukkan min kekuatan sisihan perlekatan terendah (17.02 ± 6.08 MPa). Analisa statistik menunjukkan tidak terdapat interaksi ketara di dalam kekuatan sisihan perlekatan bagi kumpulan keadaan dan bahan coping berasingan (p>0.05). Sebaliknya, statistik menyatakan terdapat interaksi ketara antara keadaan dan bahan coping (p<0.05). Ujian Tukey’s post hoc mendedahkan bahawa tiada perbezaan ketara di antara semua kumpulan kecuali zirkonia dan logam di dalam keadaan hypobaric (p<0.05). Pemeriksaan mikroskopik menunjukkan terdapat kegagalan campuran adesif/kohesif bagi kebanyakan spesimen. Sebagai kesimpulan, terdapat perbezaan ketara ke atas kekuatan sisihan pelekatan venir seramik kepada bahan coping dan keadaan barometrik (p<0.05).,Doctor in Clinical Dentistry (Restorative Dentistry) | - |
| dc.language.iso | eng | - |
| dc.publisher | UKM, Kuala Lumpur | - |
| dc.relation | Faculty of Dentistry / Fakulti Pergigian | - |
| dc.rights | UKM | - |
| dc.subject | Barometric pressures | - |
| dc.subject | Zirconia | - |
| dc.subject | Dentistry | - |
| dc.subject | Dissertations, Academic -- Malaysia | - |
| dc.subject | Universiti Kebangsaan Malaysia -- Dissertations | - |
| dc.title | Influence of barometric pressures on shear bond strength of veneering ceramic to zirconia and metal | - |
| dc.type | theses | - |
| dc.format.pages | 107 | - |
| dc.identifier.callno | WU26.H883i 2014 9 tesis | - |
| Appears in Collections: | Faculty of Dentistry / Fakulti Pergigian | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ukmvital_80496+SOURCE1+SOURCE1.0.PDF Restricted Access | 5.24 MB | Adobe PDF |  View/Open |
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