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M Zulkarnain
Departemen Prostodonsia Fakultas Kedokteran Gigi Universitas Sumatera Utara
Dentistry Materials Science & Nanotechnology

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Pengaruh Penambahan Pati Ubi Kayu pada Bahan Cetak Alginat Terhadap Stabilitas Dimenisi Model Gigi Tiruan M Zulkarnain; Jaasphreet Kaur Harchan Singh
Jurnal Material Kedokteran Gigi Vol 3 No 2 (2014): JMKG Vol 3 No 2 September 2014
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (477.993 KB)

Abstract

Alginate is one of the most widely used dental impression material used by dentists. When the process of syneresis and imbibitions occurs, it resulted in changes of dimensional stability of alginate and to prevent the occurrence changes in dimensional stability modification of impression material is done by adding cassava starch. The purpose of this study was to determine the effect of cassava starch in various concentrations of 40%, 50%, 60% into impression material of alginate with pouring of type III gypsum after 5, 10 and 15 minutes towards dimensional stability of denture model. This was a laboratory experimental study using a copper splint–metal (12,5 mm inside diameter). The total of 60 samples are classified to 12 groups. Samples were measured using digital calliper then analyzed by One-Way Anova test followed by LSD test. Based on One-Way Anova, the results shows significant result in addition of cassava starch concentration 40%, 50%, 60% into alginate with pouring of type III gypsum after 5 minutes (B1, A1.1, A2.1 dan A3.1) with p = 0,043 (p<0,05), after 10 minutes (B2, A1.2, A2.2 dan A3.2) with p = 0,005 (p<0,05) and after 15 minutes (B3, A1.3, A2.3 dan A3.3) with p = 0,003 (p<0,05). The result of LSD test showed a significant difference in all the groups with (p<0,05). The results showed the addition of cassava starch in various concentrations have influence on the dimensional stability of alginate impression material. The addition of 40% cassava starch into impression material of alginate has the best stability than other concentration.
Pengaruh Penyemprotan Daun Sirih dan sodium Hipoklorit Pada Cetakan Elastomer Terhadap Perubahan Dimensi M Zulkarnain; Sarah Devina
Jurnal Material Kedokteran Gigi Vol 5 No 2 (2016): JMKG Vol 5 No 2 September 2016
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (363.538 KB) | DOI: 10.32793/jmkg.v5i2.252

Abstract

Elastomer is often used to make an impression. In prosthodontics, impression material that have been exposed to infected saliva pose a main source of cross contamination in dental office and laboratories, therefore desinfection of impression is recommended by American Dental Association (ADA) to prevent possible transmission of infectious diseases. Piper betle L. 25% and sodium hypochlorite 0,5% can both be used as desinfection agent by spraying the impression materials. But some desinfection process can effect the dimensional accuracy of the impressions materials especially the hidrophilic materials. The aim of this study was to determine the influence of spray desinfection with piper betle L. 25% and sodium hypochlorite0,5% on dimensional accuracy of cast made by elastomeric impression materials. Type of this research was a laboratory experiment. The samples of this research were the cast made by elastomeric impression materials, two abutment preparations in shape with diameter (buco lingual)6.33 mm, height (occluso gingival) 8.02 mmand distance between the centers of the abutments 28.25 mm and total samples were 30 for 3 groups. The cast dimension was measured using digital caliper and dimensional accuracy test was analyzed with T-Independent test. The result showed that there was a statisticallyinfluence of spray desinfection with piper betle L. 25% and sodium hypochlorite0,5% on dimensional accuracy of cast made by elastomeric impression materials(p<0.05) and the percentage of the dimensional change is in normal range recommended by ADA 19 (<0,5%). Therefore, spray desinfection with piper betle L. 25% can be used in elastomeric impression materials.
Co-Authors Jaasphreet Kaur Harchan Singh Sarah Devina