Hasil Pencarian  ::  Simpan CSV :: Kembali

"Resin komposit merupakan bahan restorasi yang banyak digunakan dalam kedokteran gigi. Ini adalah bahan sewarna gigi yang digunakan untuk memulihkan gigi berlubang, retak, dan terkelupas. Resin komposit terdiri dari matriks resin berbasis metakrilat dan komponen pengisi seperti partikel kaca atau keramik yang berfungsi meningkatkan kekuatan dan daya tahan. Keunggulan resin komposit meliputi estetika yang baik, konservasi struktur gigi, dan keserbagunaan aplikasi. Namun, terdapat pula kelemahan seperti sensitivitas teknik, biaya tinggi, dan potensi terkelupas.Penelitian ini bertujuan untuk mengevaluasi karakteristik fisik dan kimia dari resin komposit gigi berbasis kombinasi Silika (SiO2) dan Hidroksiapatit (Ca10(PO4)6(OH)2) sebagai filler. Karakterisasi dilakukan melalui pengamatan struktur permukaan menggunakan Scanning Electron Microscopy (SEM), identifikasi gugus fungsi menggunakan Fourier Transform Infrared Spectroscopy (FTIR), uji penyusutan polimerisasi (polymerization shrinkage), dan kedalaman curing (depth of cure).Hasil penelitian menunjukkan bahwa penambahan hidroksiapatit dapat mengurangi penyusutan polimerisasi dari 39% menjadi 33,5%. SEM menunjukkan distribusi partikel filler yang merata dan permukaan lebih homogen pada campuran Silika–Hidroksiapatit. Spektrum FTIR memperlihatkan perbedaan gugus fungsi antara resin yang telah dikeringkan (cured) dan belum dikeringkan (uncured), dengan identifikasi gugus PO43− dan Si–O–Si yang khas. Uji depth of cure menunjukkan bahwa resin dengan silika memiliki kedalaman curing yang lebih tinggi (0.730 cm) dibandingkan hidroksiapatit (0.396 cm), namun HAp memberikan hasil yang lebih konsisten.Kesimpulannya, kombinasi filler Silika dan Hidroksiapatit dapat memperbaiki sifat fisik dan kimia resin komposit gigi, terutama dalam mengurangi shrinkage dan mempertahankan kestabilan struktur. Penelitian ini mendukung potensi penggunaan kombinasi filler tersebut untuk aplikasi restorasi gigi yang lebih optimal.

---

Dental resin composite is a widely used restorative material in dentistry. It is a tooth- colored substance used to restore cavities, cracks, and fractures. Resin composites consist of a methacrylate-based resin matrix and filler components such as glass or ceramic particles that serve to improve mechanical strength and durability. Advantages of resin composites include good aesthetics, tooth-conserving procedures, and versatile applications. However, they also have drawbacks, such as technique sensitivity, relatively high cost, and risk of chipping or marginal failure.

This study aimed to evaluate the physical and chemical characteristics of a dental resin composite formulated with a combination of silica (SiO2) and hydroxyapatite (Ca10(PO4)6(OH)2) as fillers. The characterization was conducted using Scanning Electron Microscopy (SEM) to observe surface morphology, Fourier Transform Infrared Spectroscopy (FTIR) to identify functional groups, polymerization shrinkage testing, and depth of cure analysis.

The results showed that the addition of hydroxyapatite reduced polymerization shrinkage from 39% to 33.5%. SEM observations revealed well-distributed filler particles and a more homogeneous surface in the silica–hydroxyapatite composite. FTIR spectra demonstrated distinct differences between cured and uncured samples, identifying key functional groups such as PO43− and Si–O–Si. The depth of cure test indicated that the silica group had a higher curing depth (0.730 cm) compared to hydroxyapatite (0.396 cm), although the HAp group exhibited more consistent results.

In conclusion, the combination of silica and hydroxyapatite fillers can improve the physical and chemical properties of dental resin composites, particularly in reducing shrinkage and enhancing structural stability. This study supports the potential application of this filler combination for more optimal dental restorations."

"Objectives. The aim of this study was to compare the fracture toughness of a microhybrid and a flowable microhyrid resin composites. Methods. Test specimens (30x15x2)mm made of amicrohybrid and a flowable microhybrid were prepared in a double torsion mould and were then polymerized for 20 seconds using a light-curing device. Taken out from the mould, the specimens were than soaked in disfilled water (37°C) for 1 hour and then fractured in a double-torsion technique. t-Test was used to test significance difference between the microhybrid and flowable microhybrid resin composites. Result. The use of double-torsion technique resulted in crack initition and crack arrest which revealed Klc of 1.14 MN/m3/2 and 1.045 MN/m3/2 for the microhybrid and the flowable microhybrid resin composites, respectively. Both resin composites were insignificantly different in the fracture toughness values showed by t–Test. Conclusions. The present study suggested that there was no significant difference between the microhybrid and the flowable microhybrid resin composites tested. It appreared that filler fraction might not affect the fracture toughness of the resin composties tested."

"The use of resin composites as posterior restoratives has markedly increased over the past decade. The patients demand for better esthetics, concerns related to possible mercury toxicity from amalgam and improvements in resin composite materials have significantly contributed the popularity of these materials. Early problems related to composites included excessive wear, less of anatomic form, post operative sensitivity, secondary caries and marginal leakage. Marginal adaptation still remains an unavoidable problem for composite restoration, especially at the gingival wall of cervical or Class II restoration. In an attempt to improve marginal sealing, many techniques and lining materials have been designed. To reduce stress generated by polymerization shrinkage, applying and curing of resin composites in layers is often recommended. Using a thick adhesive layer or a low-viscosity resin may, due to its elastic properties, serve as a flexible intermediate layer and compensate for the polymerization stress created in resin composite. Flowable composites were created by retaining the same small practicle size of traditional hybrid composite but reducing the filler content and allowing the increased resin to reduce the viscosity of the mixture. Flowable composites were introduced in 1996 as liners, fissure sealants and also in tunnel preparations. They have been suggested for Class I, II, III and V cavity restorations, preventive resin restorations and composite, porcelain and amalgam repairing. Their usage as a liner under high filled resins in posterior restorations has been shown to improve the adaptation of composites and effectively achieve clinically acceptable results. This article attempts to give a broad characteristics of different types of flowable composites. "

"Berdasarkan hasil RISKESDAS 2018 penyakit gigi dan mulut terbanyak di Indonesia adalah karies gigi. Salah satu upaya kuratif karies gigi adalah dilakukan restorasi pada gigi tersebut. Resin komposit adalah salah satu bahan restorasi gigi yang memiliki nilai estetik, sifat fisik, sifak mekanik, dan biokompatibilitas yang tinggi. Penelitian ini bertujuan untuk mengetahui karakterisasi dari resin komposit dengan komponen utama filler silika dengan penambahan additional filler titanium dioksida dan carbon nanotubes. Pembuatan resin komposit dilakukan dengan cara silanisasi partikel filler kemudian dilakukan pengadukan filler dengan matriks resin sampai berbentuk pasta. Resin komposit tersebut dicetak menggunakan mold kemudian dilakukan penyinaran dengan LCU selama 20 detik. Penilaian karakterisasi resin komposit dilakukan dengan beberapa metode, antara lain: SEM, FTIR, Vickers Hardness Test, dan Polymerization Shrinkage. Sampel dibagi menjadi tiga grup, yaitu: grup I adalah resin komposit dengan komposisi filler sebanyak 55%, grup II adalah resin komposit dengan komposisi filler silika sebanyak 50% dan titanium dioksida sebanyak 5 %, dan grup III adalah resin komposit dengan komposisi filler silika sebanyak 50% dan carbon nanotubes 5 %. Gambaran SEM sampel grup I memperlihatkan adanya agglomerasi dari partikel filler silika. Gambaran SEM sampel grup II menunjukkan terdapat microcrack pada permukaan resin komposit. Gambaran SEM struktur pasta sampel grup III menunjukkan partikel carbon nanotubes (CNTs) dan silika berhasil menyatu dengan matriks resin komposit. Hasil penelitian menunjukkan sampel grup I memiliki nilai Degree of Conversion dan Vickers hardness paling tinggi dari grup sampel lain. Sedangkan, grup sampel II memiliki volume pengerutan paling kecil dibandingkan grup sampel lain.

---

Based on the 2018 RISKESDAS results, the majority of dental and oral diseases in Indonesia are dental caries. A tooth restoration is one of the curative treatments of dental caries. Dental composite resins are one of the dental restorative materials that have a great aesthetic, biocompatibility, physical, and mechanical properties. This study aims to determine the characterization of composite resins with the main component of the silica filler with the addition of titanium dioxide and carbon nanotubes. Composite resin is synthesized by silanizing the filler particles and then mixing the filler with the resin matrix to form a paste. The composite resin is molded using a mold and then irradiated with LCU for 20 seconds. Samples were divided into three groups. They are group I containing composite resin with silica filler composition of 55%, group II containing composite resin with silica filler composition by 50%, and titanium dioxide by 5%, and group III containing composite resin with silica filler composition as much as 50% and carbon nanotubes 5%. Several methods are used to characterize the composite resin, including SEM, FTIR, Vickers Hardness Test, and Polymerization Shrinkage. SEM images of group I samples show agglomeration of silica filler particles. SEM image of group II samples indicates that there is a microcrack on the surface of the composite resin. SEM images of the structure of paste group III show carbon nanotubes (CNTs) and silica particles successfully fused with the composite resin matrix. The result showed that group sample I had the highest degree of conversion and Vickers hardness values than the other sample groups. Meanwhile, sample group II had the lowest shrinkage volume compared to other sample groups."

"Penelitian ini bertujuan untuk mengeksplorasi sifat antikorosi dan antibakteri pada implan gigi berbasis SS 316L yang dilapisi komposit perak-hidroksiapatit/multi-walled carbon nanotubes (Ag-HA/MWCNT) menggunakan teknik elektroforesis deposisi (EPD). Proses EPD dilakukan pada tegangan 30V dan 60V selama 20 menit dengan menggunakan suspensi etanol dan metanol, serta variasi konsentrasi Ag sebesar 1, 3, dan 5 wt%. Hasil penelitian menunjukkan terbentuknya vibrasi regangan P-O dari gugus fosfat (PO4³⁻) di semua sampel, yang mengindikasikan keberhasilan deposisi komposit Ag-HA/MWCNT. Morfologi lapisan Ag-HA/MWCNT memperlihatkan partikel yang tersusun secara globular, semakin meluas dengan peningkatan konsentrasi Ag, dan membentuk entitas lapisan yang melekat baik pada permukaan SS 316L. Tegangan 60V pada EPD menghasilkan deposisi yang lebih seragam dibandingkan dengan tegangan 30V. Pelarut metanol sebagai suspensi pada metode EPD menghasilkan deposisi Ag-HA/MWCNT yang seragam dan menutupi seluruh permukaan implant gigi SS 316L. Analisis komposisi mengkonfirmasi keberadaan unsur kalsium, fosfor, karbon, perak, dan oksigen pada permukaan lapisan. Uji efisiensi korosi dalam simulasi cairan tubuh menunjukkan peningkatan resistansi polarisasi dengan penurunan densitas arus (icorr) menjadi 0,096 μA/cm², dan laju korosi yang rendah sebesar 3.32 x 10⁻5 mm/y, seiring dengan peningkatan konsentrasi Ag. Selain itu, peningkatan zona inhibisi terhadap bakteri E. coli dari 9 mm menjadi 11 mm ditemukan pada lapisan dengan konsentrasi Ag 5 wt%. Oleh karena itu, dapat disimpulkan bahwa deposisi Ag-HA/MWCNT 5 wt% pada permukaan implan gigi berbasis SS 316L menunjukkan sifat antikorosi yang tinggi dan sifat antibakterial yang kuat, sehingga berpotensi digunakan sebagai alternatif material untuk implan gigi.

---

This study investigates the corrosion resistance and antibacterial properties of silver-hydroxyapatite/multi-walled carbon nanotube (Ag-HA/MWCNT) composite-coated SS 316L dental implants fabricated using electrophoretic deposition (EPD).The EPD process was conducted at voltages of 30V and 60V for 20 minutes using ethanol and methanol suspensions and Ag concentrations of 1, 3, and 5 wt%. Results confirmed the successful deposition of Ag-HA/MWCNT composites, as evidenced by the presence of P-O stretching vibrations from phosphate groups (PO4³⁻) in all samples. The morphology of the Ag-HA/MWCNT coatings revealed globular particles that became more extensive with increasing Ag concentration, forming a well-adherent layer on the SS 316L surface. EPD at 60V yielded more uniform deposition compared to 30V. Methanol suspension resulted in uniform Ag-HA/MWCNT deposition covering the entire SS 316L dental implant surface. Compositional analysis confirmed the presence of calcium, phosphorus, carbon, silver, and oxygen on the coating surface. Corrosion efficiency analysis in simulated body fluid demonstrated an increase in polarization resistance and a decrease in current density (icorr) to 0.096 μA/cm², indicating a low corrosion rate of 3.32 x 10⁻⁵ mm/y, with increasing Ag concentration. Additionally, an enhanced inhibition zone against E. coli bacteria, from 9 mm to 11 mm, was observed for the 5 wt% Ag-coated layer. These findings suggest that 5 wt% Ag-HA/MWCNT deposition on SS 316L dental implants exhibits superior corrosion resistance and strong antibacterial properties, making it a promising alternative material for dental implant applications."

"ABSTRAKPenelitian ini bertujuan untuk menganalisis pengaruh perendaman resin komposit nanohybrid dalam obat kumur mengandung etanol dengan waktu berbeda terhadap kekasaran permukaan. Dua puluh empat spesimen resin komposit nanohybrid dibagi menjadi 4 kelompok perendaman: obat kumur etanol 17 dan 26,9 selama 1,5 jam dan 3 jam. Kekasaran permukaan diukur menggunakan surface roughness tester Mitutoyo SJ301. Berdasarkan analisis statistik uji one-way ANOVA dan uji Tukey.

---

ABSTRACTThe aim of this study was to analyze the effect of ethanol containing mouthwash with different concentration and duration of immersion on the surface roughness of nanohybrid composite resin. Twenty four specimens of nanoybrid composite resin were divided into 4 groups of immersion 17 ethanol containing mouthwash, and 26,9 ethanol containing mouthwash for 1,5 hours and 3 hours. Surface roughness was measured using SJ301 Mitutoyo surface roughness tester. Statistical analysis of one way ANOVA and Tukey test."

"Tujuan penelitian ini untuk mengetahui pengaruh penggunaan sumber sinar berbeda terhadap kekuatan tarik diametral resin komposit bulk-fill. Resin komposit bulk-fill Tetric N-Ceram Bulk Fill dibuat sebanyak 20 spesimen berbentuk lempeng dengan diameter 6 mm dan tebal 3 mm. Spesimen dibagi menjadi dua kelompok yaitu kelompok yang disinari dengan sumber sinar QTH dan sumber sinar LED. Uji kekuatan tarik diametral dilakukan dengan menggunakan Universal Testing Machine. Hasil penelitian menunjukkan nilai rerata kekuatan tarik diametral resin komposit bulk-fill yang disinari sumber sinar QTH dan LED sebesar 38.62 2.34 dan 42.02 3.21. Hasil uji independent sample T menunjukkan nilai rerata pada kedua kelompok berbeda bermakna.

---

This study aimed to evaluate the effect of using different light sources on the diametral tensile strength of bulk fill resin composite. Bulk fill resin composite Tetric N Ceram Bulk Fill was used to make of 20 disc shape specimens with 6 mm in diameter and 3 mm in thickness. Specimens were divided into two groups, the two groups were polymerized with using QTH and LED light source curing unit. Diametral tensile strength test was conducted by using a Universal Testing Machine Shimadzu, Japan. The results showed that diametral tensile strength mean value of bulk fill resin composite that were cured with QTH and LED light source were 38.62 2.34 and 42.02 3.21 MPa respectively. Independent sample t test results showed that the mean value of the two groups was significantly different."

"Penelitian ini bertujuan untuk mengetahui pengaruh perendaman minuman isotonik terhadap kekerasan permukaan resin komposit bulk-fill. Enam puluh spesimen Tetric N-Ceram Bulk-Fill berdiameter 6 mm dan tinggi 3 mm dibagi menjadi 2 kelompok perendaman yaitu dengan akuades (kontrol) dan minuman isotonik. Setiap kelompok direndam dengan lama perendaman 1 hari, 3 hari dan 7 hari. Kekerasan permukaan diuji menggunakan HMV-G Series Micro Vickers Hardness Tester.Hasil menunjukan terdapat perbedaan bermakna (p<0,05) antara perendaman akuades dan minuman isotonik uji Independent T-Test. Hasil menunjukkan bahwa terdapat perbedaan bermakna (p<0,05) antara semua kelompok perendaman minuman isotonik dengan lama perendaman 1 hari, 3 hari dan 7 hari dengan uji statistik One-Way Anova dan PostHoc Tukey HSD. Dapat disimpulkan bahwa minuman isotonik mempengaruhi kekerasan permukaan resin komposit bulk-fill.

---

This study aims to determine the influence of isotonic drink immersion on surface hardness of bulk-fill composite. Sixty specimens of Tetric N-Ceram Bulk-Fill, 6 mm in diameter and 3 mm height were divided into two groups of storage media; deionized water (control) and isotonic drink. Each group was for 1 day, 3 days and 7 days. The surface hardness is measured using a HMV-G Series Micro Vickers Hardness Tester.

The results showed that there were significant differences (p <0.05) between immersion of control and isotonic drink with Independet T-Test. The results showed that there were significant differences (p <0.05) between all isotonic drink immersion groups with immersion duration of 1 day, 3 days and 7 days with One-Way Anova Test and Post Hoc Tukey HSD. It can be concluded that isotonic drinks affect the surface hardness of bulk-fill composite."

"Latar Belakang: Dalam dunia kedokteran gigi, terdapat banyak pilihan material restoratif yang dapat digunakan, salah satunya yaitu resin komposit. Seiring dengan perkembangan teknologi, para peneliti berhasil mengembangakan resin komposit baru yaitu Bulk-Fill. Sebagai contoh adalah resin komposit Giomer Bulk-Fill yang memiliki berbagai sifat seperti sifat mekanik, fisis dan biologis. Namun, belum ada penelitian pada resin komposit Giomer Bulk-Fill yang secara spesifik menguji nilai kekuatan tarik diametral yang merupakan salah satu sifat mekanik material restoratif.Tujuan Penelitian: Penelitian ini bertujuan untuk mengetahui pengaruh lama perendaman 1, 24, dan 72 jam serta perbedaan nilai pH saliva buatan 7; 5,5; dan 4,5 terhadap kekuatan tarik diametral resin komposit Giomer Bulk-Fill.Metode: Penelitian eksperimental laboratorik dengan menggunakan 90 spesimen berbentuk silindris pejal dengan diameter 6 mm dan tinggi 3 mm yang diuji menggunakan Universal Testing Machine (Shimadzu AGS-X 5kN, Japan) dan dibagi ke dalam 3 kelompok pH larutan saliva buatan yaitu 7; 5,5; dan 4,5; serta 3 kelompok lama perendaman yaitu 1, 24, dan 72 jam.Hasil: Hasil pengujian menggunakan uji One-way ANOVA menunjukkan adanya perbedaan bermakna pada spesimen-spesimen yang digunakan (p<0,05). Pada kelompok spesimen yang direndam dalam larutan saliva buatan dengan pH 7, hasil rerata kekuatan tarik diametral pada perendaman selama 1 jam adalah sebesar 36,7 ± 2,7 MPa. Kemudian mengalami penurunan setelah perendaman 24 jam dengan rerata nilai kekuatan tarik diametralnya sebesar 35,2 ± 2,2 MPa dan meningkat kembali setelah perendaman 72 jam dengan hasil rerata kekuatan tarik diametralnya sebesar 40,1 ± 3,6 MPa. Pada kelompok spesimen yang direndam dalam larutan saliva buatan dengan pH 4,5, pada perendaman selama 1 jam hasil rerata kekuatan tarik diametralnya sebesar 33,6 ± 2,4 MPa. Kemudian setelah perendaman 24 jam dan 72 jam meningkat menjadi 42,6 ± 2 MPa dan 44,2 ± 2,8 MPa. Pada kelompok spesimen yang direndam dalam larutan saliva buatan dengan pH 5,5, hasil rerata kekuatan tarik diametral setelah perendaman selama 1 jam adalah sebesar 34 ± 2,4 MPa. Namun, terjadi perbedaan jika dibandingkan dengan kelompok pH 4,5 yaitu pada kelompok dengan pH 5,5 pada lama perendaman 24 jam terjadi peningkatan yaitu sebesar 44,7 ± 2,8 MPa kemudian menurun setelah perendaman 72 jam dengan nilai rerata sebesar 39 ± 3,3 MPa.Kesimpulan: Nilai kekuatan tarik diametral resin komposit Giomer Bulk-Fill tidak dipengaruhi oleh pH saliva buatan 4,5; 5,5; dan 7 yang digunakan di dalam penelitian ini. Nilai kekuatan tarik diametral resin komposit Giomer Bulk-Fill yang direndam selama 1, 24, dan 72 jam di dalam saliva buatan dengan pH 4,5; 5,5; dan 7 secara umum mengalami peningkatan sehingga lama perendaman dalam penelitian ini mempengaruhi nilai kekuatan tarik diametral resin komposit Giomer Bulk-Fill.

---

Background: In the world of dentistry, there are many choices of restorative materials that can be used, one of them is composite resin. Along with the development of technology, the researchers succeeded in developing a new composite resin called Bulk-Fill. One example is Giomer Bulk-Fill composite resin which has various properties such as mechanical, physical and biological properties. However, there is no research on Giomer Bulk-Fill composite resin which specifically tests the value of diametral tensile strength which is one of the mechanical properties of restorative material.

Objective: This study aims to determine the effect of immersion time and the difference in pH value 7; 5,5; and 4,5 of the artificial saliva solution on the value of diametral tensile strength of Giomer Bulk-Fill composite resin.

Method: Laboratory experimental research using 90 solid cylindrical specimens with a diameter of 6 mm and a height of 3 mm which were tested using Universal Testing Machine (Shimadzu AGS-X 5kN, Japan) and were divided into 3 groups pH of artificial saliva solution (7; 5.5; and 4.5) and 3 groups of immersion periods (1, 24 and 72 hours).

Results: The test results using the One-way ANOVA test showed significant differences in the specimens used (p <0.05). In the group of specimens which were immersed in artificial saliva solution with pH 7, the results of the average diametral tensile strength at immersion for 1 hour were 36.7 ± 2.7 MPa. Then it decreased for 24 hours immersed time with a mean value of diametral tensile strength of 35.2 ± 2.2 and increased again at 72 hours immersed time with an average value of diametral tensile strength 40.1 ± 3.6 MPa. In the group of specimens which were immersed in artificial saliva solution with pH 4.5, at immersion for 1 hour the average value of diametral tensile strength was 33.6 ± 2.4 MPa. Then in 24-hour and 72-hour immersion, it increased to 42.6 ± 2 MPa and 44.2 ± 2.8 MPa. In the group of specimens immersed in artificial saliva solution with a pH of 5.5, the average value of diametral tensile strength for 1 hour was 34 ± 2.4 MPa. However, there was a difference when compared to the pH 4.5 group, which was in the group with a pH of 5.5 in the 24-hour immersion period, the value increase for 44.7 ± 2.8 MPa and then decreased for 72 hours of immersion with an average value of 39 ± 3.3 MPa.

Conclusion: The value of diametral tensile strength of Giomer Bulk-Fill composite resin is not affected by pH of artificial saliva 4.5; 5.5; and 7 that used in this study. The value of diametral tensile strength of Giomer Bulk-Fill composite resin, which is immersed for 1, 24, and 72 hours in artificial saliva with pH 4.5; 5.5 and 7 generally increased so that the immersion time in this study affected the diametral tensile strength of Giomer Bulk-Fill composite resin."