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Pengaruh Perendaman Minuman Bersoda terhadap Kekuatan Tekan Resin Komposit Bulk-Fill Flowable Nathania, Cindy; Stefani, Rosita; Eddy, Eddy; Hadi, Steward
Jurnal Ilmiah dan Teknologi Kedokteran Gigi (JITEKGI) Vol 21, No 2 (2025): November 2025
Publisher : Fakultas Kedokteran Gigi Universitas Prof. Dr. Moestopo (Beragama)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32509/jitekgi.v21i2.4823

Latar Belakang: Resin komposit bulk-fill flowable semakin banyak digunakan sebagai material restorasi langsung pada kavitas kelas II. Di antara berbagai minuman, minuman bersoda merupakan salah satu yang paling sering dikonsumsi dan memiliki pH rendah yang dapat menyebabkan degradasi material restorasi serta memengaruhi sifat mekaniknya. Oleh karena itu, penting untuk mengevaluasi pengaruh perendaman dalam minuman bersoda terhadap kekuatan tekan resin komposit bulk-fill flowable. Metode: Sebanyak 54 sampel resin komposit bulk-fill flowable dari tiga merek (Beautifil Bulk Flowable, SDR flow+, Tetric N-Flow Bulk Fill) berbentuk silinder (diameter 2 mm; tinggi 4 mm) dibagi menjadi 3 kelompok kontrol dan 3 kelompok perlakuan. Kelompok kontrol direndam dalam saliva buatan, sedangkan kelompok perlakuan direndam dalam minuman bersoda selama 6 jam dan dalam saliva buatan selama 18 jam pada suhu 37°C selama 6 hari. Setelah perendaman, sampel diuji kekuatan tekannya menggunakan Universal Testing Machine. Hasil: Data berdistribusi normal dan homogen (p 0,05), dan tidak terdapat perbedaan signifikan antar kelompok berdasarkan uji Two-Way ANOVA (p 0,05). Kesimpulan: Perendaman dalam minuman bersoda tidak berpengaruh signifikan terhadap kekuatan tekan resin komposit bulk-fill flowable, yang menunjukkan ketahanan baik terhadap lingkungan asam.

Evaluation of Titanium Alloy Surface Roughness After Phosphoric Acid Etching Wijaya, Livia; Suwandi, Trijani; Eddy, Eddy; Tjandrawinata, Rosalina; Erawati, Jeti; Pratiwi, Deviyanti
Odonto : Dental Journal Vol 12, No 3 (2025): December 2025
Publisher : Faculty of Dentistry, Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/odj.12.3.280-291

ABSTRACT Background: Tooth loss can be caused by periodontal disease, caries, and other factors. Dental implants made of titanium are a common solution to replace tooth loss. Titanium grade 5 (Ti-6Al-4V) is often chosen for an implant. Modern commercial implant surface roughness (Ra) ranges from 1 to 2 μm. Surface roughness has an important role in osseointegration. The acid etching method can be used to improve surface roughness. This study evaluates titanium alloy surface roughness after etching with varying concentrations of H3PO4 acid.Method: A laboratory experiment with a pre-test and post-test group design. 25 titanium alloy samples were divided into 5 groups (n=5) and treated with saline, HCl 37%, and H3PO4 acid 38%, 48%, and 58%. Surface roughness was measured using a surface roughness tester, while EDS and SEM tests analyzed titanium composition and surface characteristics.Result: The titanium used in this study is a titanium alloy. Surface roughness modification using acid had a higher roughness compare to saline with significant different (p<0.05). Surface roughness in the group H3PO4 48% and 58% had a lower roughness compared to HCl 37% but no significant different (p>0.05). Referring to the SEM results, each acid showed morphological changes on the surface and for saline there were no morphological changes.Conclusion: Varying concentrations of H3PO4 acid can effectively improve the surface roughness of titanium alloys, with solutions at 48% and 58% demonstrating similar effectiveness to 37% HCl acid.

Evaluation of Titanium Alloy Surface Roughness After Phosphoric Acid Etching Wijaya, Livia; Suwandi, Trijani; Eddy, Eddy; Tjandrawinata, Rosalina; Erawati, Jeti; Pratiwi, Deviyanti
Odonto : Dental Journal Vol 12, No 3 (2025): December 2025
Publisher : Faculty of Dentistry, Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/odj.12.3.280-291

ABSTRACT Background: Tooth loss can be caused by periodontal disease, caries, and other factors. Dental implants made of titanium are a common solution to replace tooth loss. Titanium grade 5 (Ti-6Al-4V) is often chosen for an implant. Modern commercial implant surface roughness (Ra) ranges from 1 to 2 μm. Surface roughness has an important role in osseointegration. The acid etching method can be used to improve surface roughness. This study evaluates titanium alloy surface roughness after etching with varying concentrations of H3PO4 acid.Method: A laboratory experiment with a pre-test and post-test group design. 25 titanium alloy samples were divided into 5 groups (n=5) and treated with saline, HCl 37%, and H3PO4 acid 38%, 48%, and 58%. Surface roughness was measured using a surface roughness tester, while EDS and SEM tests analyzed titanium composition and surface characteristics.Result: The titanium used in this study is a titanium alloy. Surface roughness modification using acid had a higher roughness compare to saline with significant different (p<0.05). Surface roughness in the group H3PO4 48% and 58% had a lower roughness compared to HCl 37% but no significant different (p>0.05). Referring to the SEM results, each acid showed morphological changes on the surface and for saline there were no morphological changes.Conclusion: Varying concentrations of H3PO4 acid can effectively improve the surface roughness of titanium alloys, with solutions at 48% and 58% demonstrating similar effectiveness to 37% HCl acid.

The effects of heat treatment files and taper lock depth on the torsional fatigue resistance of rotary NiTi instruments Haryanto, Viola Shelvannia; Stefani, Rosita; Eddy, Eddy; Iskandar, Bernard Ongkie
Media Penelitian dan Pengembangan Kesehatan Vol. 36 No. 1 (2026): MEDIA PENELITIAN DAN PENGEMBANGAN KESEHATAN
Publisher : Poltekkes Kemenkes Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34011/jmp2k.v36i1.4190

Background: A file fracture is a significant complication in endodontic treatment, particularly when it obstructs access to the apical root canal. The primary cause is torsional fatigue, occurring when applied force exceeds the elastic limit of NiTi alloys. Heat-treated rotary files have been developed to improve torsional resistance. Objective: To compare the time to fracture due to torsional fatigue between gold and blue heat-treated rotary files under taper lock conditions. Methods: A total of 48 heat-treated rotary files (#25.04) were embedded in bulk-fill composite resin blocks to simulate taper lock. Samples were randomly divided into eight groups (n=6): E-Flex Gold (3 mm, 5 mm), EndoArt Smart Gold (3 mm, 5 mm), E-Flex Blue (3 mm, 5 mm), and EndoArt Smart Blue (3 mm, 5 mm). Torsional fatigue time was recorded from the start of rotation using an endomotor until fracture occurred. Results: One-way ANOVA revealed a statistically significant difference in torsional fatigue time among groups (p<0.05). Conclusion: Blue heat-treated rotary files showed longer fracture times and may be safer in high taper lock conditions, although results are limited by the in vitro resin model.

Cytotoxicity of β-tricalcium phosphate chitosan gelatin composite scaffold as a bone substitute: in vitro study Putri, Tansza Setiana; Eddy, Eddy; Pratiwi, Deviyanti; Kurniawan, Florencia Livia; Swe, Thet Thet
Padjadjaran Journal of Dentistry Vol 38, No 1 (2026): March 2026
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol38no1.63795

Introduction: Beta-tricalcium phosphate (βTCP) has higher solubility than hydroxyapatite (HA), allowing it to be more easily resorbed and replaced by newly formed bone. This higher solubility enables the release of calcium and phosphate ions that play important roles in bone remodeling and osteoblast activity; however, excessive ion release may lead to cytotoxic effects. Limestone, mainly composed of calcium carbonate (CaCO₃), can serve as a calcium source for the fabrication of βTCP. βTCP scaffolds can be combined with organic components such as chitosan and gelatin to form composite scaffolds for bone tissue engineering. Therefore, this study aimed to analyze the cytotoxicity of a β-tricalcium phosphate–chitosan–gelatin composite scaffold as a bone substitute. Methods: Type of research was experimental laboratory. Freeze-drying method was used to produce a composite scaffold which was divided into two groups: chitosan-gelatin scaffold as control group and βTCP-chitosan-gelatin scaffold (each group consisted of three samples) To evaluate cytotoxicity, composite scaffolds were tested on osteoblast cells and the MTT assay was measured and assessed based on time evaluation at 24 hours and 72 hours. Cytotoxicity was determined based on the percentage of viable cells obtained from the MTT assay. Results: Viable cells percentage on the chitosan-gelatin scaffold was 70.32% at 24 h and increased to 99.52% at 72 h. While on the chitosan-gelatin-βTCP scaffold there were 85.11% viable cells at 24 h and increased to 89.54% at 72 h. Statistical analysis using one-way ANOVA showed no significant difference among all groups (p>0.05). However, Fisher’s LSD test indicated a significant difference in cell viability between 24 hours and 72 hours within the chitosan gelatin group. Conclusion: The βTCP-chitosan-gelatin composite scaffold demonstrated no cytotoxic effect on osteoblast cells, indicating its biocompatibility and potential suitability as a bone substitute material.

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