Sherman Salim, Sherman
Department Of Prosthodontic, Faculty Of Dental Medicine, Airlangga University, Surabaya- Indonesia

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Various curing methods on transverse strength of acrylic resin Sherman Salim
Dental Journal (Majalah Kedokteran Gigi) Vol. 43 No. 1 (2010): March 2010
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 (283.416 KB) | DOI: 10.20473/j.djmkg.v43.i1.p40-43

Abstract

Background: Acrylic resin were first used in dentistry for denture bases. The basic knowledge of acrylic resin curing method should be known by the dentist, because the improved performance of acrylic resin depends on the curing method. Purpose: This study was aimed to find the most effective curing method to produce the highest transverse strength of acrylic resin. Method: 18 rectagular acrylic resin samples with 65 x 10 x 2.5 mm size, divided into 3 groups based on difference curing method (Japan Industrial Standard, 24 hour in 70° C boiling water, and microwave). There were tested for their transverse strength. Result: The result of this study showed that conventional JIS method has the highest mean and deviation scores (60.85 MPa ± 2.10) compared to those of 24 hour in 70° C boiling water method (55.77 MPa ± 2.09) and of microwave method (56.60 MPa ± 1.45). Conclusion: The highest transverse strength is derived from the conventional JIS curing method.Latar belakang: Resin akrilik pertama kali dipakai dalam bidang kedokteran gigi untuk basis protesa gigi. Pengetahuan dasar berbagai metode polimerisasi resin akrilik harus diketahui oleh dokter gigi karenapenyempurnaanpenampilan resin akrilik tergantung dari berbagi metode polimerisasi. Tujuan: Penelitian ini bertujuan untuk mendapatkan metode polimerisasi yang menghasilkan resin akrilik dengan kekuatan transversal yang paling tinggi. Metode: 18 sampel dari resin akrilik berbentuk balok dengan ukuran 65 x 10 x 2,5 mm dibagi dalam 3 kelompok berdasarkan metode polimerisasi yang berbeda (JIS, 24 jam dalam air 70° C, dan microwave). Hasil: Hasil dari penelitian ini menunjukkan bahwa rerata dan angka deviasi metode polimerisasi JIS konvensional adalah yang terbesar kekuatan transversa (60,85 MPa ± 2,10) dibandingkan dengan metode air 70° C 24 jam (55,77MPa ± 2,09) dan metode microwave (56,60 MPa ± 1,45). Kesimpulan: Kekuatan transversa yang paling besar diperoleh dari metode polimerisasi JIS konvensional.
The effect of Psidium guajava Linn leaf extract on Candida albicans adherence and the transversal strength of acrylic resin Amiyatun Naini; Sherman Salim
Dental Journal (Majalah Kedokteran Gigi) Vol. 41 No. 1 (2008): March 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 (186.526 KB) | DOI: 10.20473/j.djmkg.v41.i1.p25-29

Abstract

Denture stomatitis is an inflammation of oral cavity due to removable denture wearing. Prevention of denture stomatitis can be effectively done by using mouth rinsing. Currently, Indonesian government is actively promoting traditional herbal medicine as an alternative medicine such as Psidium guajava Linn leaf which has an anti bacterial and anti fungal ability. The purpose of this study was to know the effective concentration and soaking duration to reduce Candida albicans without lowering transversal strength of acrylic resin. This experimental laboratory study was using heat cured acrylic resin plate without surface polishing. The concentration of Psidium guajava Linn leaf extract used in this study were 32%, 34%, 36%, and 38% respectively with 15 minutes, 30 minutes, 1 hour and 8 hours soaking duration. The transversal strength was measured in the same concentration with 2 days, 10 days and 60 days soaking duration. Sterile aquadest was used as control. Two direction ANOVA and LSD test were used in data analysis. The result showed significant difference in the number of Candida albicans colony among concentrations and soaking durations. Significant difference was also found in transversal strength among concentrations and soaking durations. It is concluded that the extract of Psidium guajava Linn leaf in 38% concentration with 8 hours soaking duration will lower the Candida albicans colony, whereas 38% concentration with 60 days soaking duration will lower the transversal strength but it is still above the standard value.
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.
Correlation between estrogen and alkaline phosphatase expression in osteoporotic rat model Sherman Salim
Dental Journal (Majalah Kedokteran Gigi) Vol. 49 No. 2 (2016): June 2016
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 (467.71 KB) | DOI: 10.20473/j.djmkg.v49.i2.p76-80

Abstract

Background: Osteoporosis is a systemic disease that can decrease bone density as a result of imbalance bone remodeling and bone resorption. Estrogen reduction due to menopause can increase osteoclast activity and furthermore decrease bone density. Estrogen can stimulate alkaline phosphatase (ALP) expression, collagen type I and osteocalcin in bone remodelling process. Ovariectomized rat is a common animal for studying patofisiology, diagnosis and treatment osteoporosis patient. Purpose: To evaluate correlation between estrogen and ALP expression in osteoporotic rat model mandible. Methode: 18 female wistar rats, 2 months old, 200 grams were divided into 2 groups, ovariectomized group and sham surgery as control group. Surgery was done under intra muskular anesthesia using combination 2% xylazine 1cc and 10% ketamine 1cc. After 12 weeks, mandible was taken for ALP examination and blood from heart was taken to evaluate the amount of estrogen. Result: There was significant correlation between estrogen and ALP expression in osteoporotic rat model mandible. Conclusion: The amount of estrogen can influence ALP expression activity.
Effects of Moringa oleifera leaf extract combined with DFBBX on type-1 collagen expressed by osteoblasts in the tooth extraction sockets of Cavia cobaya S. Soekobagiono; Sherman Salim; Hanoem Eka Hidayati; Karina Mundiratri
Dental Journal (Majalah Kedokteran Gigi) Vol. 51 No. 2 (2018): June 2018
Publisher : Faculty of Dental Medicine, Universitas Airlangga https://fkg.unair.ac.id/en

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v51.i2.p86-90

Abstract

Background: Tooth extraction is a common procedure in dentistry after which the residual ridge will no longer receive stimulus leading to volume, height and width loss. These anatomical changes can then result in difficulties with future denture fabrication and implant placement. Preservation of the alveolar ridge, therefore, assumes considerable importance after tooth extraction. Moringa oleifera, on the other hand, can enhance bone formation. Type-1 collagen is a marker of osteoblast formation. Purpose: This research aimed to analyze the effects of Moringa oleifera leaf extract combined with DFBBX on type-1 collagen expressions in tooth extraction sockets. Methods: 56 Cavia cobaya subjects were divided into eight groups. Their lower left incisors were then extracted prior to the sockets of the first and fifth groups being filled with PEG, those of the second and sixth groups with DFBBX, those of the third and seventh groups with Moringa oleifera leaf extract and a combination of DFBBX and Moringa oleifera leaf extract in those of the fourth and eighth groups. The sockets were then examined on days 7 and 30 by means of an immunohistochemical technique. The data collected was subsequently subjected to analysis by One Way Anova and Tukey HSD tests. Results: There were significant differences between the control group and the treatment group administrated with Moringa oleifera leaf extract combined with DFBBX. On days 7 and 30, the groups treated with the combination of DFBBX and Moringa oleifera leaf extract had the highest number of type-1 collagen expressions. Conclusion: A combination of DFBBX and Moringa oleifera leaf extract is effective in increasing type-1 collagen expressions in tooth extraction sockets.
Evaluation of BSP and DMP1 in hydroxyapatite crab shells used for dental socket preservation Michael Josef Kridanto Kamadjaja; Sherman Salim; Wiwik Herawati Waluyo; Tengku Natasha Eleena binti Tengku Ahmad Noor
Dental Journal Vol. 56 No. 2 (2023): June 2023
Publisher : Faculty of Dental Medicine, Universitas Airlangga https://fkg.unair.ac.id/en

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v56.i2.p104-108

Abstract

Background: Bone resorption due to tooth extraction leads to unpredictable bone volume for future prosthetics. Crab shells were promoted as a solution to prevent bone resorption, along with an effort to reduce biological waste. Purpose: This study aimed to analyze the expression of bone sialoprotein (BSP) and dentine matrix protein-1 (DMP1) in the wound healing process in tooth-extraction sockets after applying a crab shell-derived hydroxyapatite scaffold. Methods: The subjects (28 Cavia cobaya) were divided into control and treatment groups. The control group was left untreated, while the treatment group received a hydroxyapatite scaffold of Portunus pelagicus shell in the tooth socket. The expression of BSP and DMP1 was determined by immunohistochemical staining on days 7 and 14. One-way analysis of variance and Tukey’s honest significance difference test were used to find the groups with the most significant difference. Results: The highest mean expression of BSP and DMP1 was in the day 14 treatment group, while the lowest was in the day 7 control group. Conclusion: Administering hydroxyapatite scaffold derived from the Portunus pelagicus shell to the post-extraction sockets increased the expression of both BSP and DMP1.