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Fabrication and Characterization of Nylon 6 Fiber via Wet Spinning Method for Application as a Reinforcing Material for a Direct Dental Bridge Wijaya, Dissa Kirana; Djustiana, Nina; Faza, Yanwar; Cahyanto, Arief; Hardiansyah, Andri
Makara Journal of Science Vol. 27, No. 3
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Nylon is a biocompatible thermoplastic polymer that is well known for its excellent fracture resistance, making it suitable for fabricating fiber-reinforced composite (FRC)-based dental bridges. FRC is widely used in dentistry. This study aimed to investigate the structural and morphological characteristics of the nylon 6 fiber prepared using five different weights of nylon 6 dissolved in formic acid. The nylon 6 fiber was successfully fabricated via a simple wet spinning method using water as a coagulant. The fiber was then characterized using Fourier transform infrared (FTIR) spectroscopy, optical microscopy, and scanning electron microscopy. FTIR spectroscopy confirmed the presence of nylon 6 characteristics in the fiber in the form of N–H and C=O groups at a specific wave number. The differences in the diameter and morphological shape of the fiber were attributed to the nylon 6 different concentrations. Furthermore, the nylon 6 fiber can be used to produce cost-effective products and realize suitable characteristics for use as an alternative to traditional materials for fabricating direct dental bridges.

Effect of 3-methacryloxypropyltrimethoxysilane on diametral tensile strength of rice husk silica-based dental composite Febrida, Renny; Wulanhapsari, Madeiva; Faza, Yanwar; Karlina, Elin; Cahyanto, Arief; Solihudin, Solihudin; Eddy, Diana Rakhmawati
Padjadjaran Journal of Dentistry Vol 34, No 2 (2022): July
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol34no2.41242

ABSTRACTIntroduction: Rice husk silica has been studied as a filler in dental composite, however, the mechanical properties of the resulting composites are below the commercial due to the poor surface modification between silica and resin matrix. 3-methacryloxyprpyltrimethoxysilane (MPTS) is one of the coupling agents that are effective to modify the silica surface. The purpose of this study to analyze the effect of MPTS on the diametral tensile strength (DTS) of the self-made composite using rice husk silica. Methods: The research type of this study was an experimental research laboratory. The samples (26 samples) were divided into two groups, namely the test group (using MPTS-modified silica) and the control group (using non-modified silica). The samples were cylindrical in shape with a diameter of 6.0 ± 0.1 mm and a height of 3.0 ± 0.1 mm according to ANSI/ADAS No. 27, 1993 and ISO 4049, 1988. The Fourier Transform Infrared (FTIR), HORIBA, was used to characterize the MPTS grafting on the silica surface. The DTS value is measured by Universal Testing Machine (UTM), Lloyd LRX Plus. Results: FTIR presents the additional peak of carboxyl and methacryloyl group at 1716, 1555, and 1410 cm-1 wavenumber, respectively in MPTS-modified silica. The DTS value of the test group was 43.40 ± 4.43 MPa and the control group was 25.80 ± 2.63 MPa. The test group was significantly higher than the control group (p-value = 0.001). Conclusion: The MPTS is effective to enhance the DTS value of rice husk silica-based composite.Keywords: Rice husk silica; dental composite; diametral tensile strength; 3-methacryloxypropyltrimethoxysilane.

Differences of Micro-CT evaluation of the obturation sealing capability between thermoplastic carrier-based condensing techniques and lateral heat condensation techniques Amida, Aya; Aripin, Dudi; Hayati, Ayu Trisna; Latief, Fourier Dzar Eljabbar; Djustiana, Nina; Cahyanto, Arief; Usri, Kosterman; Tjahajawati, Sri; Mariam, Marry Siti; Widyaputra, Sunardhi
Padjadjaran Journal of Dentistry Vol 34, No 2 (2022): July
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol34no2.41384

ABSTRACT Introduction: Root canal filling is an important part of root canal treatment that aimed to seal the root canal system, to prevent bacterial penetration and their toxins into periradicular tissues and to provide favourable environment for periapical healing. Thermoplasticized technique were developed to produce filling with homogenous mass, to achieve optimal sealing ability and to increase the quality of root canal filling. The aim of this study is to analyzed differences of Micro-Computed Tomography (Micro-CT) evaluation of the obturation sealing capability between thermoplastic carrier-based condensing techniques and lateral heat condensation techniques. Methods: This study was conducted under an in-vitro quasi experimental methode to 36 specimens of maxillaris centralis incisivus which were divided to 3 groups, (A) thermoplasticized carrier-based technique (GuttaCore System), (B) warm lateral condensation technique (heat carrier SystemB), (C) cold lateral condensation as control group. Sealing ability is evaluated based on the measurement results of volume percentages of filling material and sealer, volume of void, and surface density, that which was calculated from the 3D volumetric image of Micro-CT device. Data were statistically analysed using Analisis of Variance (ANOVA) and t-test. Result: The result showed significant difference of percentage filling material and sealer volume in apical third (p<0.05), whereas there were no significant differences of void volume in apical third, middle third, coronal third or along the canal (p>0.05). Conclusion: Thermoplastized carrier-based technique is not better than warm lateral technique.Keywords: sealing ability; root canal filling; thermoplasticized carrier-based technique; warm lateral technique.

Mixture of Indonesian White Portland Cements, Bi2O3, and Light Cured Methacrylate-based resin as a potential candidate for pulp capping material Nurdin, Denny; Simanjuntak, Beactris Lamria; Farah Adang, Rahmi Alma; Cahyanto, Arief
Padjadjaran Journal of Dentistry Vol 35, No 1 (2023): March 2023
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol35no1.43207

ABSTRACT Introduction: The bioactivity property of pulp capping materials is determined by the hydroxyl ion release ability, which may alter the environmental pH to become alkaline. Calcium silicate-based materials are antibacterial, able to induce reparative dentin and have a good bacteria-tight seal. The poor handling of calcium silicate-based materials can be overcome by adding resin, so the materials will be easier to handle. Therefore, the purpose of this study was to synthesize a mixture of Indonesian White Portland Cements, Bi2O3, Light Cured Methacrylate-based Resin and analyze its hydroxyl ion release ability. Methods: The study wasquasi experimental. Sample in this research is the Indonesian White Portland Cements. The Indonesian White Portland Cements, Bi2O3 mixture was prepared using the simple solution method and mixed with Light Cured Methacrylate-based Resin. Population was WPC, Bi2O3 and light cured methacrylate-based resin. The sample’s ability to release hydroxyl ions was measured using a calibrated pH meter and titration test 60, 120, 180 and 320 minutes. Analyzed Results: This study showed that the mixture of Indonesian White Portland Cements, Bi2O3, Light Cured Methacrylate-based Resin had an initial pH of 11.04 and increased to its peak on 168 hours mark, or on day seven, to pH 11,77 with hydroxyl ion release value of 10-2.23 Conclusions: The mixture of Indonesian White Portland Cements, Bi2O3, Light Cured Methacrylate-based Resin has an alkaline pH, is able to release hydroxyl ion and has a potential candidate for pulp capping material.Keywords :Indonesia white portland cements, Bi2O3, light cured methacrylate-based resin, hydroxyl ion release ability

Chemical composition of Citrus spp. and oral antimicrobial effect of Citrus spp. peels essential oils against Streptococcus mutans Aripin, Dudi; Julaeha, Euis; Dardjan, Murnisari; Cahyanto, Arief
Padjadjaran Journal of Dentistry Vol 27, No 1 (2015): March 2015
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol27no1.26751

Introduction: The essential oils of orange peels had a considerable potential to be used as an antimicrobial agent. The aim of this present study is to analized chemical composition of Citrus spp. And the oral antimicrobial effect of Citrus spp. peels essential oils against Streptococcus mutans. Methods: Five orange peels species were used in this study consist of Lime (Citrus aurantifolia), Tangerine (Citrus nobilis), Sweet Orange (Citrus sinensis), Lemon (Citrus limon), and Kaffir Lime (Citrus hystrix). The isolated essential oils were analyzed using gas chromatography-mass spectroscopy (GC-MS). The Streptococcus mutans ATCC 25175 was employed against the antimicrobial effect of samples. Results: The extraction yields of hydrodistilled-essential oils from Tangerine, Kaffir Lime, Sweet Orange, Lemon, and Lime provided the extraction yields of 4.20, 2.26, 1.97, 1.74 and 0.83% yields, respectively. Major component essential oils of Citrus spp. was D-Limonene. The highest antimicrobial activity against S. mutans was Lime peel essential oil, followed by Lemon, Kaffir Lime, and Sweet Orange or Tangerine. All samples showed antimicrobial activity against S. mutans with the variation of antimicrobial action depending on the constituent of D-Limonene, β-Pinene, and α-terpineol. Conclusion: Major component chemical composition of essential oils of Citrus spp. was D-Limonene and antimicrobial activity by Lime peel essential oil due to its proportional amount of D-limonene and β-pinene and the highest antimicrobial activity.

Setting time evaluation of injectable carbonate apatite cement using various sodium carboxymethylcellulose (Na CMC) concentration Cahyanto, Arief; Permatasari, Indah; Febrida, Renny
Padjadjaran Journal of Dentistry Vol 30, No 2 (2018): July 2018
Publisher : Faculty of Dentistry Universitas Padjadjaran

Introduction: The injectable calcium phosphate cement has the advantage to be used in the bone defect with the limited access which supports a minimally invasive surgical technique. These Injectability properties of calcium phosphate cement can be modified by adding a sodium carboxymethylcellulose (Na CMC). The aim of this present study is to investigate the setting time of injectable bone cement based on CO3Ap using various Na CMC concentration. Methods: Vaterite (a polymorph of CaCO3) and Dicalcium Phosphate Anhydrous (DCPA) as powder phase mixed with 0.2 mol/L Na2HPO4 solution containing 1% polyethylene glycol (PEG) and various concentration of Na CMC as followed 0.5%, 1%, 1.5%, and 2%, respectively. Each concentration groups was consisting of 5 samples from total 20 samples. Powder and liquid phase was mixed with a spatula at a liquid to powder (L/P) ratio of 0.4. The setting time of CO3Ap cement was evaluated according to the modification method standardized by ISO 1566 for dental zinc phosphate cement using a custom fabricated Vicat needle apparatus. The cement was maintained at 37ºC and 100% relative humidity as a standard requirement. Results: The mean value of setting time cement was as followed 0.5% Na CMC 35:06 minutes, 1% Na CMC 38:48 minutes, 1.5% Na CMC 40:06 minutes, and 2% Na CMC 41:30 minutes. The result is statistically significant (p<0.05) with the group of 0.5% Na CMC compared to others group. Conclusion: Increasing the concentration of Na CMC could prolong the setting time of CO3Ap cement.

Flexural properties of electrospun polymethyl methacrylate microfiber-reinforced BisGMA for dental post prefabrication Djustiana, Nina; Faza, Yanwar; Cahyanto, Arief
Padjadjaran Journal of Dentistry Vol 33, No 3 (2021): November
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol33no3.36255

Introduction: A dental post is a restoration to preserve the remaining tooth structure thus can be functioned normally. Many researchers suggested a fiber dental post due to its biomechanical properties that are similar to dentin structure. This study aims to analyse the flexural properties of electrospun polymethyl methacrylate microfiber-reinforced BisGMA for dental post prefabrication. Methods: The sample used was following the ADA guideline, as well as for the number of samples. The sample size was 25×2×2mm, which is close to the average dental post size. PMMA microfibers were prepared by dissolving heat cure PMMA powder with 99% acetone, then electrospinning with a rotary collector. Acquired PMMA microfibers were immersed into the resin matrix containing BisGMA, camphorquinone, and 2-dimethylaminoethyl methacrylate (DMAEMA) as a monomer, initiator, and co-initiator, respectively, to prepare the dental posts. Results: PMMA microfibers structure and surface fracture of dental posts were confirmed by Scanning Electron Microscopy (SEM). PMMA microfibers show unaligned fiber morphology with an approximate diameter size of 1-5 µm. A universal testing machine was used to measure the dental post's flexural properties (flexural strength and flexural modulus). Dental posts with PMMA fibers showed higher flexural strength (83.5 ± 10.7 MPa) compared to the dental post without PMMA fibers (61.7 ± 3.03 MPa) with a p-value <0.05. On the other hand, PMMA fibers' addition did not significantly increase the dental post's flexural modulus. Conclusion: The PMMA microfibers can intimately adhere to the BisGMA mixture as the resin matrix. Therefore, the PMMA microfiber significantly improves the flexural strength of the BisGMA for dental post prefabrication.

Comparison of brittleness and flowability between Cipetir Gutta-Percha and commercial Gutta-Percha Usri, Kosterman; Faza, Yanwar; Sanjaya, Arya; Viona, Nona; Djustiana, Nina; Karlina, Elin; Febrida, Renny; Cahyanto, Arief
Padjadjaran Journal of Dentistry Vol 34, No 1 (2022): March
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol34no1.38869

Introduction: Gutta-Percha (GP) is a standard endodontic filling material found in pure form in the Cipetir area, Indonesia. However, a study comparing physical properties (brittleness and flowability) between pure GP and commercially used GP has not been found. Therefore, this study aims to test the brittleness and flowability of Cipetir GP compared to commercial GP. Methods: This study was quasi-experimental. Forty samples were prepared for each material and test, according to ANSI/ADA specification-GP cones-no 78 in 2006. The first step began by making a sample of Cipetir GP using moulds from a cuvette, commercial GP (Inline #80), and gypsum stone. The second step was to test the brittleness (Crease Recovery Tester) and flowability (according to ADA No. 78 of 2000) of Cipetir GP and commercial GP. Results: The brittleness test of Cipetir GP showed unbroken samples, and the commercial GP showed four broken samples. The Fisher's Exact test showed a p-value of 0.087, which means there was no significant difference in brittleness between Cipetir GP and commercial GP. At the same time, the average value of flowability of Cipetir GP and commercial GP were 6.46 mm and 0.19 mm, respectively. The unpaired t-test showed a p-value<0.05, which means there was a significant difference in the flowability between Cipetir GP and commercial GP. Conclusions: There is a brittleness similarity between Cipetir GP and commercial GP, while the flowability value of Cipetir GP is higher than commercial GP. Those initial findings showed that the Cipetir GP might become an excellent candidate to be an alternative endodontic filling.

Fabrication of fluorapatite cement as an anti-caries agent based on calcium phosphate cement Saidin, Annisatul Arrufaidhah; Cahyanto, Arief; Takarini, Veni
Padjadjaran Journal of Dentistry Vol 33, No 2 (2021): July 2021
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol33no2.34840

Introduction: Many research proves that fluorapatite cement is one of the materials in dentistry that can restore and treat severe carious lesions. The current research was aimed to study the chemical reaction of calcium phosphate cement (CPC), calcite, and calcium fluoride as a base in fabricating the fluorapatite cement as an anti-caries agent. Methods: The type of research is a descriptive method. The preparation of DCPA was initially performed by measuring 0.2g of DCPA powder which was prepared for 15 samples. Fluorapatite was fabricated using dicalcium phosphate anhydrous (DCPA), calcite (CaCO3) as the precursor to form carbonate apatite crystal, and calcium fluoride (CaF2). CaF2 will be mixed into sodium dihydrogen phosphate (NaH2PO4) with different percentages, 1%, 5%, and 10%. The samples were then incubated for 24 hours at 37˚C under 100% moisture condition. X-Ray Diffraction (XRD) characterization will be conducted to determine the phase composition and crystallinity of fluorapatite. In addition, the samples were analyzed with the Fourier Transform Infrared Spectroscopy (FTIR) examination to determine the crystal functional group. Results: All of the samples showed a satisfactory setting reaction. The XRD characterization results showed the formation of the crystal apatite phase at 32.43˚ and 32.83˚. The FTIR results indicated the stretching vibration of the fluoride compound at 1400 cm-1. The intensity formation of the apatite crystal phase at particular degrees was not as high as the standard hydroxyapatite data due to the incomplete formation of apatite crystal within 24 hours—the stretching vibration presence in the FTIR graph at 1400 cm-1 proven to be fluorapatite cement. Conclusions: Fluorapatite cement as an anti-caries agent can be fabricated through the mixing process of DCPA, CaCO3, and CaF2 powders with NaH2PO4 solution.

The linear polymerisation shrinkage effect of chemical activated composite resin using different bonding agents on the dimensions of the tooth cavity Mariam, Marry Siti; Cahyanto, Arief
Padjadjaran Journal of Dentistry Vol 32, No 1 (2020): March 2020
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol32no1.25915

Introduction: This study was aimed to determine the effect of the linear polymerisation shrinkage of composite resin using different bonding agents on the dimension of the tooth cavity. Methods: Fifty-four extracted human premolar teeth, both maxillary and mandibular were used and divided into three groups (A, B, and C) into eighteen specimens. The conventional cavity was prepared, and all cavities were bevelled. In Group A, only the bevel was etched, and the enamel bond was applied to it. Group B was treated with the same procedure as group A, but the dentin bond was used instead of enamel bond. Group C, the whole cavity was etched, dentin bond was applied on the bevel and the cavity walls. The reference points were placed in the vestibular and lingual palatal region as occlusal as possible on the enamel. The Silar® composite resin (microfilled, chemically activated), etching agent (gel etch), enamel and dentin bond system were employed for the preparation and filing of the cavities. The cavity was filled with composite, and the specimens were immersed in 0.02% chlorhexidine gluconate solution at the room temperature. The distance between both reference points was measured before and after filling procedures. Results: Group A showed the least shrinkage with a mean of 0.14%, group B showed a larger shrinkage with the average of 0.24% and the largest shrinkage was found in group C with the average of 0.26%. The difference between groups B and C was not statistically significant given at the point of 0.05 significance level, and the difference between groups A, B, and C was significant at the 0.01 significance level. From the mathematical modelling using the stress-strain equation, the results showed that the tensile stress in restrained of Silar® composite was higher than the enamel (19.80 MPa > 10.34 MPa) thus lead to cracks in the enamel. Conclusion: The acid etching on dentin is not improving the retention and marginal adaption of restorative resin. The use of enamel bond system gives a better effect on the adhesion strength compared to the dentin bond system.

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