Evaluation of surface treatments by self glaze, over glaze and a polishing agent on the porcelain surface modified with diamond rotary instrument-an in vitro study
| Autor: | B. Krishnaveni, Priyalatha Suvvati, Samarla Aruna Kumari, K. Sravanthi, Pavani Lukka, Jahanara Jahanara |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | International journal of health sciences. :3466-3483 |
| ISSN: | 2550-696X 2550-6978 |
| DOI: | 10.53730/ijhs.v6ns3.6493 |
| Popis: | The purpose of this study is to evaluate effect of a) Self glaze b) Over glaze and c) Polishing on porcelain surface which is subjected to grinding with a diamond rotary instrument. To test this theory 40 ceramic fused to metal disc samples were fabricated. The ceramic material used was Ivoclar Dsign. The discs were of 10mm X 3mm of which 2mm is metal substructure and 1mm is of porcelain. The specimens were divided into four groups of 10 samples each. The first group was left as fired or unglazed. The remaining three groups were subjected to surface modification with sintered diamond bur at 15000 rpm per minute with even pressure. Each of the three groups was treated with diamond polishing paste, self glaze and overglaze respectively. The surface of all the four groups were evaluated under optical microscope and scanning electron microscope. Optical microscope observation revealed that Group-I (as fired) had the surface of the specimens appearing to be pitted, rough with irregularities and there was no evidence of surface cracks. Group II (polished with diamond bur) had surface appeared to be very smooth. |
| Databáze: | OpenAIRE |
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