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All Journal Dental Journal (Majalah Kedokteran Gigi) Jurnal Vokasi Indonesia
Sri Redjeki Indiani
Dental Health Technology Diploma Study Program, Faculty Of Vocational, Universitas Airlangga, Surabaya
Arts Humanities Dentistry Economics, Econometrics & Finance Education Public Health Social Sciences

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Journal : Dental Journal (Majalah Kedokteran Gigi)

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The transversal strength of acrylic resin plate after being immersed soaking in noni fruit (Morinda citrifolia Linn.) juice Sri Redjeki Indiani
Dental Journal (Majalah Kedokteran Gigi) Vol. 41 No. 2 (2008): June 2008
Publisher : Faculty of Dental Medicine, Universitas Airlangga https://fkg.unair.ac.id/en

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (507.165 KB) | DOI: 10.20473/j.djmkg.v41.i2.p84-87

Abstract

The disadvantages of acrylic resin plate are liquid absorption and porosity, allowing microorganisms to grow and multiply resulting in inflammation in the oral cavity. The juice of the noni fruit (Morinda citrifolia Linn.) contains active flavonoid and atsiri oil. Flavonoid is a phenol substance that degrades acrylic resin plate in prolonged contact. The purpose of this study was to examine the transversal strength of acrylic resin plate after being immersed in noni fruit juice. An acrylic resin plate of 65 × 10 × 2.5 mm was immersed in 4%, 6%, 8%, 10%, and 12% concentrations of noni fruit juice and distilled water in a control group for 31, 46, and 61 days. The transversal strength of acrylic resin plate was tested using an autograph with a crosshead speed of 1/10mm/second; the distance for the two supporting parts was 50 mm. The data was analyzed by using a One–Way ANOVA test. There was no significant difference in the transversal strength of the plate after being soaked for 31, 46, and 61 days in 4%, 6%, 8%, 10%, and 12% concentrations of the juice. This study showed that the soaking of acrylic resin plate for 31, 46, and 61 days in 4%, 6%, 8%, 10%, and 12% concentrations of noni fruit juice does not decrease the transversal strength.
Levels of crystalline silica dust in dental laboratorium of Dental Health Technology Study Program of Vocational Faculty, Universitas Airlangga Eny Inayati; Sherman Salim; Sonya Harwasih; Sri Redjeki Indiani
Dental Journal (Majalah Kedokteran Gigi) Vol. 48 No. 4 (2015): December 2015
Publisher : Faculty of Dental Medicine, Universitas Airlangga https://fkg.unair.ac.id/en

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (430.027 KB) | DOI: 10.20473/j.djmkg.v48.i4.p183-187

Abstract

Background: Silicosis is an occupational lung disease caused by inhaling particles of crystalline silica in a long time. The disease then results in inflammation and defects in lung tissue. Prosthesis construction is usually conducted in dental laboratory using a lot of materials containing crystalline silica, such as gypsum, ceramics, planting material, sandblast and others. Purpose: This research aims to determine levels of crystalline silica dust in the dental laboratory of Dental Health Technology Diploma Study Program, Vocational Faculty, Universitas Airlangga. Method: Three measurement points was determined, namely point 1, point 2 and point 3 in each dental laboratory space (I and II). Suctioning dust was performed at those points using Low Volume Dust Sampler (LVDS). Samples taken were divided into two groups, namely X and Y. Taking dust samples were carried out for 30 minutes. Elements of crystalline silica contained in the dust were quantitatively measured using XR Defractometry tool, while size and morphology of silica were measured using SEM EDX tool. Data obtained were statistically analyzed by paired t test. Result: The results showed significant differences in the levels of the total dust measured and crystalline silica in the form of quartz and cristobalite among those two dental laboratory spaces. Conclusion: It can be concluded that the levels of the total dust and silica quartz dust in the dental laboratory spaces I and II were greater than the Threshold Limit Value (TLV) determined.
Co-Authors Eny Inayati, Eny Sherman Salim, Sherman Sonya Harwasih Sonya Harwasih