Claim Missing Document
Check
Articles

Found 28 Documents
Search

The knowledge level of dental students on color stability composite resin restoration in the COVID-19 pandemic era Chaterina Anjelia; Octarina Octarina
International Journal of Public Health Science (IJPHS) Vol 10, No 4: December 2021
Publisher : Intelektual Pustaka Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijphs.v10i4.21038

Abstract

During the COVID-19 pandemic in Indonesia, all professional program students learning online and still expected to have good knowledge including dental materials. Color stability of anterior teeth restoration is the most important thing. Professional program students with a good level of knowledge were expected to support the use of composite resin towards patients without causing discoloration. The aim of this study was to assess the knowledge level of professional program students towards color stability of composite resin restoration in the Faculty of Dentistry, Universitas Trisakti in the COVID-19 pandemic era. This was a descriptive observational study using a cross-sectional approach. Data were collected using Google Form with a questionnaire that had been tested for validity and reliability. The sample was 100 professional program students who met the inclusion criteria and accepted informed consent. This study found that in the COVID-19 pandemic era, the knowledge level of 49 respondents (49%) was good, 37 respondents (37%) were fairly good and 14 respondents (14%) were less good. The majority of the professional program students of the Faculty of Dentistry, Universitas Trisakti were in the good category of knowledge about the color stability of composite resin restoration.
Cetakan Sampel Silindris : Uji Beta Dody Prayitno; Joko Riyono; Rosalina Tjandrawinata; Tien Suwartini; Octarina Octarina
Dinamika Rekayasa Vol 17, No 1 (2021): Jurnal Ilmiah Dinamika Rekayasa - Februari 2021
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2021.17.1.328

Abstract

Gigi berlubang menimbulkan rasa sakit, oleh karena itu gigi berlubang biasanya ditambal untuk mengurangi rasa sakit. Bahan tambal gigi harus diuji (Contoh diametrical tensile test atau surface roughness) sebelum diaplikasikan. Material tambal gigi berupa pasta dicetak menjadi bentuk silindris yang menyerupai sebuah tablet.. Cetakan sampel silindris terdahulu seperti split mold atau cylindrical sample mold memiliki kelemahan dalam waktu pembuatannya yang lama bila memproduksi sampel dalam jumlah banyak. Mesin Cetak Sampel Material Gigi Berbentuk Silindris dirancang untuk mengatasi kelemahan cetakan terdahulu. Mesin Cetak Sampel Material Gigi Berbentuk Silindris (selanjutnya di sebut Cetakan Sampel Silindris) telah didaftarkan untuk mendapat HKI (desain industri) dengan nomor A00201802586 judul Mesin Cetak Sampel Material Gigi Berbentuk Silindris. Tujuan penelitian ini adalah seperti mana tujuan beta dilakukan yaitu pengujian oleh pengguna akhir yang dilaksanakan di lokasi pengguna untuk memvalidasi apakah cetakan sampel silindris user friendly.  User friendly di bagi menjadi 5 kategori yaitu kestabilan , aman, jumlah kecukupan sampel yang di hasilkan, mudah pemakaian, dan mobilitas.Hasil penelitian menunjukkan bahwa cetakan sampel silindris adalah user-friendly
The Effect of Seal Bag Storage towards Dimensional Stability of Alginate Impression Material Octarina Octarina; Jesslyn Raharja
Scientific Dental Journal Vol. 2 No. 3 (2018): September
Publisher : Faculty of Dentistry, Trisakti University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26912/sdj.v2i3.3097

Abstract

Background: The dimensional stability of alginate impression material is very important for obtaining an accurate cast. Seal bag storage is one way to maintain dimensional stability of the impression material. Objectives: This research aims to compare the dimensional stability of alginate impressions between imprESSIX Color Change (Alginate A), Algeniux Normal Set Major (Alginate B), and Aroma Fine Plus Normal Set (Alginate C). The alginate impressions were stored in seal bags for 0 min, 10 min, 3h, 24h, 72h, 120h, and 168h. Method: Sixty-three gypsum cast samples were obtained from a master die using 3 different alginate impression materials.  The alginate impressions were stored in separate seal bags for each of the seven different time intervals, then the samples were poured with gypsum type III.  The buccal cusp length from right first molar to left first molar was measured for each gypsum cast sample using calipers and compared with the master die. The data were analyzed with two-way ANOVA followed by post hoc LSD test. Results: The distance between the mesial buccal cusps of the right and left first molar was 52.280 mm for the master die.  Gypsum cast samples of alginate A and B showed shorter lengths compared to master die, but the difference was not significant (p>0.05). A significant difference in dimensional stability was observed for alginate C (p<0.05) after 120h (52.080 mm) and 168h (52.057 mm). Conclusion: Dimensional stability of alginate impression was influenced by alginate composition and seal bag storage time. Seal bag storage could hold the dimensional stability of alginate A and B up to 168h, but for alginate C, the stability only lasted for 72h. 
Compatibility of Types III/IV Gypsum with Addition Silicone Impression Material Elysia Santini; Octarina Octarina
Scientific Dental Journal Vol. 3 No. 1 (2019): JANUARY
Publisher : Faculty of Dentistry, Trisakti University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26912/sdj.v3i1.3664

Abstract

Background: Addition silicone is an elastomeric impression material used to obtain an accurate impression. Compatibility between impression material and gypsum will affect the surface quality of the resulting models. Types III and IV gypsum are very commonly used in dentistry to pour impressions and produce working models; despite this, there has been no further research regarding the differences between the two types in terms of compatibility with addition silicone impression materials. Objectives: To compare the compatibility of types III and IV gypsum with addition silicone impression materials.  Methods: Gypsum compatibility was assessed on the basis of its ability to reproduce lines of certain widths. Thirty samples were produced by impressing a stainless steel ruled block (in accordance with ANSI/ADA Specification No. 19) with addition silicone (independent variable) and then pouring in type III or IV gypsum (dependent variable). The samples were divided into two groups: in Group A, addition silicone was poured with type III gypsum; in Group B, addition silicone was poured with type IV gypsum. The lines from the stainless steel ruled block that formed in the gypsum samples were observed with a microscope at 10x magnification. Each line was then assessed with a score from 1 to 4, according to Morrow’s standardization, where a score of 1 indicates that the line was reproduced clearly and sharply over its entire 25 mm length, and a score of 4 indicates that the line is reproduced incompletely with roughness and/or blemishes. The data were analyzed using the Mann–Whitney U test. Results: Group B (addition silicone poured with type IV gypsum) produced more results rated as 1 (60% of the group’s samples) than Group A (only 46.67% of the group’s samples). Conclusion: On the basis of the number of scores rated as 1, type IV gypsum was more compatible than type III gypsum with addition silicone.
PENGARUH PASTA GIGI DENGAN KANDUNGAN NANO KALSIUM DAN NANO KITOSAN TERHADAP KEKERASAN PERMUKAAN EMAIL Octarina Octarina; Rahma Meilita
Prosiding Seminar Nasional Pakar Prosiding Seminar Nasional Pakar 2019 Buku I
Publisher : Lembaga Penelitian Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/pakar.v0i0.4138

Abstract

Nanokalsium Cangkang kepiting bakau (Scylla serrata) dan nanokitosan cangkang kumbang (Xylotrupes gideon) digunakan sebagai bahan dasar dalam pasta gigi. Sikat gigi dengan menggunakan kalsium pada pasta gigi dapat mencegah karies gigi dengan terjadinya proses remineralisasi. Sedangkan kitosan memiliki sifat antibakteri. Penelitian ini bertujuan untuk mengetahui apakah pasta gigi dengan kandungan nano kalsium dan nano kitosan dapat meningkatkan kekerasan email gigi. Sebanyak 10 sampel permukaan email labial insisivus digunakan dalam penelitian ini, dibagi menjadi 2 kelompok masing-masing 5 sampel yang disikat dengan pasta gigi naval dan pasta gigi systema. Masing-masing kelompok dilakukan penyikatan berulang selama 42, 84 dan 126 menit. Setelah dilakukan penyikatan, dilakukan uji kekerasan permukaan email dengan Micro Hardness Tester (Buehler). Data yang diperoleh dianalisis menggunakan uji General Linier Model post hoc Bonferoni SPSS 22. Hasil penelitian ini menunjukkan bahwa rerata nilai kekerasan permukaan email yang telah disikat selama 42, 84 dan 126 menit menggunakan pasta gigi naval secara berurutan yaitu 388,80±19,82 VHN, 401,40±13,26 VHN, 405,80±27,70 VHN (p>0.05). Hasil uji kekerasan pasta gigi systema secara berurutan yaitu 391,20±27,63 VHN, 416,60±50,44 VHN, 430,20±36,29 VHN (p>0.05). Kesimpulan dari penelitian ini adalah penyikatan gigi dengan pasta gigi berbahan dasar nano kalsium dan nanokitosan dapat meningkatkan kekerasan permukaan email gigi.
The Effect of Mouthwash Containing Alcohol on Flexural Strength of Polymethylmethacrylate and Thermoplastic Nylon Eva Riani; Octarina Octarina
Journal of Indonesian Dental Association Vol 3 No 1 (2020): April
Publisher : Indonesian Dental Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1034.967 KB) | DOI: 10.32793/jida.v3i1.420

Abstract

Introduction: Polymethylmethacrylate (PMMA) and thermoplastic nylon are materials used for making denture bases. Denture users use various methods in order to keep clean their denture. Mouthwash can be an option for cleaning dentures because it is easier to find. Objective: The objective of this research was to investigate the effect of mouthwash containing alcohol as a denture cleanser on flexural strength of polymethylmethacrylate and thermoplastic nylon. Methods: Eighteen samples of polymethylmethacrylate and eighteen samples of thermoplastic nylon with a bar shape (65x10x3 mm) are being used in this research. Each materials are randomly divided into 3 groups (n=6) so there will be six research groups incuded : (A1) PMMA immersed aquades, (A2) PMMA immersed in mouthwash containing alcohol 21.6%, (A3) PMMA immersed in mouthwash containing alcohol 9%, (B1) thermoplastic nylon immersed in aquades, (B2) thermoplastic nylon immersed in mouthwash containing alcohol 21.6%, (B3) thermoplastic nylon immersed in mouthwash containing alcohol 9%. Flexural strength of two materials was tested using universal testing machine (Shimadzu AGS - 5KNX, Japan). All of the data obtained were analyzed using two way Anova test. Result: The mean of flexural strength for group A1 (104.275 ± 15.469 MPa), A2 (103.298 ± 10.387 MPa), A3 (111.626 ± 14.957 MPa), B1 (42.707 ± 4.857 MPa), B2 (38.258 ± 3.246 MPa), and B3 (40.218 ± 1.542 MPa). Result of analysis showed that there was a significant differences between flexural strength of polymethylmethacrylate and thermoplastic nylon (p<0,05), but immersion in mouthwash containing alcohol showed no significant difference (p>0,05). Conclusion: This research found that flexural strength of polymethylmethacrylate higher than flexural strength of thermoplastic nylon and mouthwash containing alcohol can be an alternative for cleaning a denture because it does not affect the flexural strength of both material significantly.
Analisis patahan veneer indirek resin komposit yang direkatkan pada email menggunakan dua resin semen berbeda Octarina Octarina; Yosi Kusuma Eriwati; Andi Soufyan
Jurnal Material Kedokteran Gigi Vol 1 No 1 (2012): JMKG Vol 1 No 1 Maret 2012
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (587.397 KB)

Abstract

Indirect resin composite veneer restoration (VIRK) is used as esthetic restoration for anterior teeth. Attachment between restoration and enamel surface was obtained using multi-step (MS) resin cement. Recently, a one step self-adhesive dual-cured resin cement (SADRC) was introduced. Determine failure analysis of VIRK bonded to enamel using MS resin cement and SADRC. Twenty specimens of buccal surface of enamel premolar were used. The specimens were flattened using silicon carbide no.2000. VIRK cylindrical specimens (diameter 3mm, thickness 3mm), were light-cured in Solidilite chamber (Shofu, Japan) for 3 minutes. VIRK specimens were then divided into: Group I with Multi-step resin cement (n=10) and Group II with SADRC (n=10). After 24h in incubator (37oC), Shear Bond Strength (SBS) were tested using Universal Testing Machine(Shimadzu AG5000). Failure analysis was determine using Stereomicroscope (Nikon, Japan) and Scanning Electron Microscope ( JEOL JSM 6510LA, Japan). Data were analyzed using Independent Sample T-Test (p<0.05). The average SBS value of group VIRK+MS was (16.97 + 7.67 MPa) higher than VIRK+SADRC (7.17 + 3.67 MPa). VIRK+Multi-step group has mixed failure, while VIRK+SADRC group has adhesive failure. Mixed failure shows strong bond between VIRK and enamel using Multi-step resin cement.
Efek Bahan Desinfektan dan Waktu Pengecoran Terhadap Stabilitas Dimensi Model Hasil Cetakan Silikon Kondensasi Johan Drison; Rosalina Tjandrawinata; Octarina Octarina
Jurnal Material Kedokteran Gigi Vol 3 No 2 (2014): JMKG Vol 3 No 2 September 2014
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (382.024 KB)

Abstract

Impression stage is an important step in dentistry. The impression itself can be a media of infection transmisions due to microorganisms in the oral cavity. Therefore it is necessary to disinfect the impression before casting process. Dimensional stability is a factor that can affect accuracy of gypsum casts, meanwhile the elastomeric impression materials are not usually casted immediatelly. To determine effect of sodium hypochlorite and chlorhexidine gluconate disinfectans with various casting time, on the dimensional stability of condensation silicone gypsum casts. A total of 30 samples were made using condensation silicone impression materials. The impressions were disinfected in 5,25% sodium hypochlorite (NaOCl) or 0,2% chlorhexidine gluconate (Chx). The impression was casted in various time intervals 0, 12, 24, 36, and 48 hours with type III gypsum product. Dimensional changes were measured and the data obtained were analyzed using SPSS 17 with two-way ANOVA, post hoc LSD and unpaired t-test. Sodium hypochlorite caused greater dimensional changes (0,49%) than chlorhexidine gluconate (0,44%). Significant dimensional changes were detected after the casting was delayed for more than 24 hours (p <0.05). Sodium hypochlorite and chlorhexidine gluconate do not cause dimensional changes, assuming that condensation silicone impression is casted in maximum time of 24 hours. Disinfection of condensation silicone impression material in chlorhexidine gluconate presents better dimensional stability than sodium hypochlorite.
The Effect of Toothpaste with Nanocalcium and Nanochitosan on Oral Cavity Microorganism (in vivo) Octarina Octarina; Stieven Rey; Komariah Komariah
Jurnal Material Kedokteran Gigi Vol 7 No 1 (2018): JMKG Vol 7 No 1 Maret 2018
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (469.849 KB) | DOI: 10.32793/jmkg.v7i1.279

Abstract

Mangrove crab shell and horn beetle can be modified into nanocalcium and nanochitosan. Nanocalcium has an effect to remineralize the tooth surface, while the nanochitosan act as an antibacterial. The purpose of this study was to determine the number of microorganism after brushing with toothpaste which containing nanocalsium and nanochitosan. In this study, toothpaste was made with nanocalsium and nanochitosan with three formulations i.e. 25% nanocalsium + 3gr nanochitosan, 55% nanocalsium + 3gr nanochitosan, and 75% nanocalsium + 3gr nanochitosan. The sample of toothpaste is tested on 25 primary school children (8-9 years old) and divided into five treatments: 25% nanocalsium + 3gr nanochitosan (K1), 55% nanocalsium + 3gr nanochitosan (K2), and 75% nanocalsium + 3gr nanochitosan (K3), commercial toothpaste (K4), and without toothpaste (K5). The result of gargling was taken before and after tooth brushing. This study used TPC test with diffusion method that embedded in sodium agar which counting the decrease of oral microorganism. The data is processed using repeated ANOVA. The result of counting microorganism for five treatments before tooth brushing respectively were K1 = 1610.4±1380.59, K2 = 979±675.46, K3 = 1275.8±809.99, K4 = 550±840.37, K5 = 1086.8±840.37 and after the treatments were K1 = 142±191.36, K2 = 102.8±118.55, K3 = 161.4±122.26, K4 = 197±210.64, K5 = 88.8±20.66 (p< 0.05). The conclusion, there is a decrease of microorganism in the oral cavity after tooth brushing. The toothpaste that containing nanocalcium and nanochitosan shows more effectively to inhibit microorganism in oral cavity than commercial toothpaste.
Efek Pra-perlakuan Resin Komposit dan Semen Ionomer Kaca Terhadap Kebocoran Tepi Alfonsius Ega Marvin; Octarina Octarina
Jurnal Material Kedokteran Gigi Vol 2 No 1 (2013): JMKG Vol 2 No 1 Maret 2013
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (289.672 KB)

Abstract

Application material pit and fissure sealants on teeth especially with deep pits and fissures as caries prevention. Material for pit and fissure sealants generally using resin composite and glass ionomer cement. The materials have differences of composition, technique, and application. Over time, material pit and fissure sealants on teeth often found not intact. To determine microleakage of the pit and fissure sealants which cause restoration failure. A total of 60 extracted human upper premolars teeth divided into 4 groups, i.e. flowable composite without etching (group A), flowable composite with etching (group B), glass ionomer cement without dentin conditioner (group C), and glass ionomer cement with dentin conditioner (group D). Each group divided into 3 subgroups, i.e. immersed in artificial saliva for 0, 7, and 14 days, 37 ̊C. After that, immersed in Methylene Blue 1% for 48 hours. Each specimen was sectioned using Struers Accutom-2 and examined using Stereomicroscope (Nikon, Japan) to determine the extent of dye penetration. Existing data was tested using statistical SPSS 17 Kolmogorov-smirnov. Group A and B have minimal microleakage than group C and D (p<0.05). Group B has minimal microleakage than group A (p>0.05). Pre-treatment etching before application composite flowable may increase the adhesion. Meanwhile, pre-treatment dentin conditioner before application glass ionomer cement didn’t affect the adhesion.