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All Journal Padjadjaran Journal of Dentistry Padjadjaran Journal of Dental Researchers and Students Jurnal Material Kedokteran Gigi Jurnal Kesehatan Gigi dan Mulut (JKGM)
Kosterman Usri
Departemen Ilmu Teknologi Material Kedokteran Gigi, Fakultas Kedokteran Gigi, Universitas Padjadjaran, Indonesia
Biochemistry, Genetics & Molecular Biology Dentistry Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health

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Effect of chitosan as a coupling agent and types of stabiliser of zirconia filler on nanocomposite hardness Putri, Tansza Permata Setiana; Manurung, Rosida; Usri, Kosterman; Purwasasmita, Bambang Sunendar
Padjadjaran Journal of Dentistry Vol 30, No 1 (2018): March
Publisher : Faculty of Dentistry Universitas Padjadjaran, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (286.602 KB) | DOI: 10.24198/pjd.vol30no1.16101

Abstract

Introduction: Nanocomposite has been developed as a dental restoration. Nano-scale filler can result in high mechanical properties and good esthetic. Nanofiller materials such as partially stabilised zirconia (PSZ) has been recommended for dental use. This form of zirconia can be stabilised by the addition of several different oxides such as magnesia and calcia. Chitosan as a coupling agent was able to increase the nanocomposite’s mechanical properties. The purpose of this research was to evaluate the nanocomposite’s hardness value with and without the addition of chitosan as a coupling agent as well as a different stabiliser of zirconia filler. Methods: Procedures of this research consisted of several stages which were the fabrication of nanocomposite and mechanical properties measurement using the Vicker’s hardness testing. Results: The nanocomposite’s hardness value (kg/mm2) with zirconia filler stabilised by MgO without the addition of chitosan was as much as 5.09 and with the addition of chitosan was 7.51; the nanocomposite ’s hardness number with zirconia filler stabilised by  CaO without the addition of chitosan was 8.16 and with the addition of chitosan was 13.13.  The results were then analysed statistically using the Analysis of Variance (ANOVA) test and showed a significant difference between all of those data groups. Conclusion: The addition of chitosan as well as different stabiliser (MgO and CaO) of Zirconia filler had affected the nanocomposite ’s hardness value.
The comparison of color stability between thermoplastic nylon resin and heat-cured acrylic resin after tea-soaking using spectrophotometer Lestari, Lisa Putri; Usri, Kosterman; Febrida, Renny
Padjadjaran Journal of Dentistry Vol 21, No 3 (2009): November
Publisher : Faculty of Dentistry Universitas Padjadjaran, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.223 KB) | DOI: 10.24198/pjd.vol21no3.14107

Abstract

Color stability is one of the denture base material requirement. Nowadays, nylon thermoplastic resin and heat-cured acrylic resin which is used as denture base materials can be changed in colour. One of a colour-changed factor is the tea drinking habit. The objective of this research was to compare the colour stability between nylon thermoplastic resin and heat-cured acrylic resin after soaked in tea. Materials used for the research were nylon thermoplastic resin from Valplast and heat-cured acrylic resin QC-20, with a sample size of 64x(10±0.03)x(2.5±0.03)mm. The sample would be assessed of colour stability after the denture base soaked in tea for 7 days. The colour measurement of each sample was done by spectrophotometer equipment (CIE lab system). Data gathered later on statistically processed with ANOVA testing. The result showed that the comparison ratio of colour stability between nylon thermoplastic resin and heat-cured acrylic resin after soaked in tea was 1.9886:1.1152. The conclusion was that colour stability in the nylon thermoplastic resin was lower than heat-cured acrylic resin after soaked in tea. This result was due to a polymer chain of nylon thermoplastic which was lower than heat-cured acrylic resin and its porosity which was higher, so tea easily soaked into the materials.
Perbandingan Titik Lunak Resin Damar Mata Kucing dengan Resin Damar Batu Suherbowo, Natania Ramadhiani; Usri, Kosterman; Hidayat, Opik Taopik
Jurnal Material Kedokteran Gigi Vol 9 No 2 (2020): JMKG Vol 9 No 2 September 2020
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32793/jmkg.v9i2.593

Abstract

Resin is widely used in dentistry these days. But synthetic resin is mostly used, because natural resin production is considered expensive in western countries. Meanwhile Indonesia has potential natural resources and one of the world’s natural resin producers. Dammar resin is one of them, there are two kinds considered the best which is mata kucing dammar resin and batu dammar resin. There are different characteristics between the two resin because they came from different tree species. This research, Difference in Softening Point of Mata Kucing Dammar Resin and Batu Dammar Resin, aims to determine the difference in the softening point of the two dammar resin so we can discover the use of dammar resin as one of the basic dental materials. Softening point test was done on 16 samples of mata kucing dammar resin and 16 samples of batu dammar resin using Ring and Ball Apparatus based on SNI 01-2900-1999. From the study results, it is obtained that the softening point of mata kucing dammar resin is 87-90°C, meanwhile batu dammar resin is 150-160°C. Softening point is the temperature which when dammar resin starts to transform into semisolid. A high softening point temperature shows that the dammar resin has long hardened because the compound chemical bond is reduced as a result of oxidation reaction. Mata Kucing dammar resin is yellowish-clear is gotten by tapping directly into the Shorea javanica tree, meanwhile the batu dammar resin which is brownish-black is gotten by collecting the fossilized sap on the ground beneath the Shorea eximia tree. Therefore, the mata kucing dammar resin has less ash and dirt content. Mata kucing dammar resin and batu dammar resin have different softening point temperature.
Efektivitas pemasaran dari mulut ke mulut pengguna Paviliun Padjadjaran Rumah Sakit Gigi dan Mulut Universitas Padjadjaran Yandi Kusmulyandi; Cucu Zubaedah; Kosterman Usri
Padjadjaran Journal of Dental Researchers and Students Vol 2, No 1 (2018): Februari 2018
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjdrs.v2i1.22303

Abstract

Pendahuluan: Efektivitas Pemasaran merupakan hal yang penting dalam keberhasilan pelaksanaan jasa pemasaran khususnya pelayanan kesehatan gigi dan mulut. Tujuan dari penelitian ini adalah untuk mengetahui Efetivitas Pemasaran dari Mulut ke Mulut Pengguna di Paviliun Padjadjaran Rumah Sakit Gigi dan Mulut Universitas Padjadjaran. Metode: metode dalam penelitian ini adalah survey dengan jenis penelitin deskriptif. Pengambilan sampel dengan cara consecutive sampling. Penelitian dilakukan di Paviliun Padjadjaran Rumah Sakit Gigi dan Mulut Universitas Padjadjaran dengan menggunakan kuisioner. Hasil: sebanyak 84 orang sampel menunjukan bahwa secara keseluruhan rata-rata efektivitas pemasaran pengguna Paviliun Padjadjaran Rumah Sakit Gigi dan Mulut Universitas Padjadjaran sebesar 67,5 %.Nilai tersebut termasuk kedalam kategori cukup efektif. Simpulan: Tingkat efektivitas pemasaran dari mulut ke mulut di bagian Paviliun Padjadjaran RSGM Unpad dalam hal ini meliputi pasien yang loyal, keluarga pasien, dan penunggu terhadap pelayanan yang diberikan di Paviliun Padjadjaran RSGM Unpad dinilai cukup efektif dengan persentase sebesar 67,5 %.Kata kunci: Pemasaran mulut ke mulut, pengguna, Paviliun Padjadjaran
Nilai pH hidrolisis pada teknik sol-gel terhadap ukuran dan zeta potensial partikel keramik mullite sebagai bahan pengisi komposit kedokteran gigi Yanwar Faza; Nina Djustiana; Arief Cahyanto; I Made Joni; Kosterman Usri
Padjadjaran Journal of Dental Researchers and Students Vol 1, No 2 (2017): Oktober 2017
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjdrs.v1i1.22298

Abstract

Pendahuluan: Kecenderungan aggregasi dan aglomerasi partikel keramik ukuran nano di dalam resin (komposit kedokteran gigi) menjadi suatu tantangan untuk dapat mensintesis nano partikel mullite dengan teknik solution gelation (sol-gel). Nilai pH hidrolisis pada teknik sol-gel diketahui mempengaruhi ukuran dan zeta potensial partikel keramik sehingga mempengaruhi kestabilan distribusi partikel keramik di dalam cairan. Metode: Desain penelitian berupa penelitian deskriptif. Partikel mullite dihasilkan melalui prekursor tetraethyl orthosilicate (TeOS) dan aluminium nitrate (Al2(NO3)3) yang di dicampurkan pada tahap hidrolisis dengan pengaturan pH yang bervariasi: pH 2, pH 3 dan pH 4. Partikel mullite yang dihasilkan di karakterisasi menggunakan Dynamic light scattering (DLS) untuk mengetahui ukuran dan zeta potensial partikel mullite. Hasil: Ukuran rerata partikel mullite yang dihasilkan pada pH 2, 3 dan 4 berturut-turut adalah 2349,7 nm, 1281 nm dan 245,9 nm. Hasil memperlihatkan penurunan ukuran partikel seiring dengan peningkatan pH. Mulite dengan pH hidrolisis 4 berukuran nanometer, sementara mullite dengan pH 2 dan 3 berukuran mikron. Sementara itu, nilai zeta potensial pada keramik mullite yang dihasilkan pada pH 2, 3 dan 4 berturut-turut adalah 31,7 mV, 40,7 mV dan 29,2 mV. Nilai zeta potensial pada semua kelompok mullite, masuk pada kategori stabil. Simpulan: Partikel mullite yang dihasilkan dengan pH hidrolisis 4 dapat menjadi alternatif bahan pengisi kedokteran gigi karena memiliki ukuran nano dan kestabilan partikel yang baik.Kata kunci: Mullite, pH hidrolisis, ukuran partikel, zeta potensial, sol-gel
SURVEI PENGGUNAAN AMALGAM OLEH DOKTER GIGI DI KOTA BANDUNG SETELAH PELARANGAN PENGGUNAAN ALAT KESEHATAN MENGANDUNG MERKURI Mutia Annisa Nabilla; Kosterman Usri; Nina Djustiana
Jurnal Kesehatan Gigi dan Mulut (JKGM) Vol 3 No 1 (2021): Jurnal Kesehatan Gigi dan Mulut (JKGM)
Publisher : Jurusan Keperawatan Gigi, Poltekkes Kemenkes Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (717.034 KB) | DOI: 10.36086/jkgm.v3i1.699

Abstract

Dental amalgam merupakan material restoratif yang paling populer karena keunggulannya. Namun fakta mengenai amalgam yang komposisinya terdiri atas merkuri menimbulkan banyak perdebatan. Beberapa dekade terakhir tingkat penggunaan amalgam mengalami penurunan, termasuk di Indonesia. Fasilitas pelayanan kesehatan yang berada di bawah pengawasan Kemenkes RI, seperti rumah sakit dan puskesmas telah menghapus seluruh penggunaan alat kesehatan bermerkuri termasuk dental amalgam. Tujuan penelitian ini adalah untuk mengetahui apakah amalgam masih digunakan dalam praktik dokter gigi khususnya praktik mandiri. Penelitian dilakukan dengan cara mengirimkan kuesioner online kepada 271 dokter gigi di Kota Bandung yang melakukan praktik mandiri dengan menggunakan teknik sampel acak sederhana. Hasil penelitian ini mengungkapkan bahwa sebanyak 6 responden (2,2%) menyatakan masih menggunakan amalgam, sedangkan 255 responden lainnya (97,8%) tidak. Dapat disimpulkan bahwa dokter gigi di Kota Bandung masih ada yang menggunakan amalgam dalam praktik mandirinya.
Perbedaan nilai kekuatan tekan resin damar mata kucing (Shorea javanica) dengan resin damar batuThe difference in compressive strength value of mata kucing dammar resin (Shorea javanica) and batu dammar resin Farah Kholidah; Kosterman Usri; Opik Taofik Hidayat
Padjadjaran Journal of Dental Researchers and Students Vol 6, No 2 (2022): Juni 2022
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjdrs.v6i2.31464

Abstract

ABSTRAK Pendahuluan: Resin damar merupakan komoditas hasil hutan bukan kayu yang memiliki nilai ekonomi tinggi dan daya guna yang luas. Resin alami yang populer dan melimpah di Indonesia adalah resin damar mata kucing dan resin damar batu. Resin banyak digunakan dalam material kedokteran gigi seperti resin komposit, resin akrilik, varnish, dan dental wax, tetapi resin yang digunakan adalah resin buatan karena keterbatasan sumber daya resin alami di luar negeri. Penelitian ini bertujuan untuk menganalisis perbedaan nilai kekuatan tekan antara resin damar mata kucing dan resin damar batu dalam rangka penggunaan resin tersebut sebagai alternatif bahan dasar material kedokteran gigi Metode: Jenis penelitian eksperimental semu, uji kekuatan tekan pada 16 sampel resin damar mata kucing dan 16 sampel resin damar batu menggunakan alat Universal Testing Machine dengan kecepatan crosshead 1,0 ± 0,25 mm/menit hingga terjadi patahan pada sampel  berdasarkan metode ASTM D695. Nilai kekuatan tekan dari kedua resin damar tersebut kemudian dianalisis menggunakan metode uji Mann-Whitney menggunakan software SPSS statistik versi 22. Hasil: nilai kekuatan tekan resin damar mata kucing rerata 7,307±6,768 MPa, nilai kekuatan tekan resin damar batu rerata 3,139±1,067 MPa. Hasil p-value didapatkan nilai sebesar 0,032. Nilai P tersebut menunjukkan terdapat perbedaan nilai kekuatan tekan yang signifikan antara resin damar mata kucing dengan resin damar batu Simpulan: Resin damar mata kucing memiliki nilai kekuatan tekan lebih tinggi sehingga berpotensi lebih besar untuk aplikasi material kedokteran gigi yang memiliki sifat mekanis rendah seperti varnish.Kata kunci: Resin damar mata kucing (Shorea javanica); resin damar batu; uji kekuatan tekan.  ABSTRACTIntroduction: Dammar resin is a non-timber forest product commodity that has high economic value and wide usability. Natural resins that are popular and abundant in Indonesia are mata kucing dammar resin and batu dammar resin. Resin widely used in dental materials such as composite resins, acrylic resins, varnishes, and dental waxes, but the resins used are artificial resins due to limited natural resin resources abroad. This study aims to analyze the difference in the compressive strength values between mata kucing dammar resin and batu dammar resin to use the resin as an alternative to dental materials. Methods: This research was quasi-experimental, compressive strength test on 16 samples of mata kucing dammar resin and 16 samples of batu dammar resin using a Universal Testing Machine with a crosshead speed of 1,0 ± 0,25 mm/minute until fracture occurs in the sample based on the ASTM D695 method. The value of the compressive strength of both dammar resins then analyzed using the Mann-Whitney test method using SPSS statistical software version 22. Results: The average compressive strength value of mata kucing dammar resin was 7,307±6,768 MPa, the average compressive strength value of batu dammar resin was 3,139±1,067 MPa. The p-value results obtained a value of 0.032. The p-value indicates a significant difference in the compressive strength value between the mata kucing dammar resin and the batu dammar resin. Conclusion: Mata kucing dammar resin has a higher compressive strength value, so it has greater potential for applying dental materials with low mechanical properties such as varnish.Keywords: Mata kucing dammar resin (Shorea javanica); batu dammar resin; compressive strength test.
Perbedaan Karakterisasi Ftir Antara Getah Perca Indonesia Dengan Getah Perca Kedokteran Gigi Annisa Hasna Nurzahra Tauziri; Kosterman Usri; Opik Taopik Hidayat
Jurnal Material Kedokteran Gigi Vol 5 No 2 (2016): JMKG Vol 5 No 2 September 2016
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.393 KB) | DOI: 10.32793/jmkg.v5i2.255

Abstract

Getah perca or known as gutta percha is the most widely used for the root canal filling material. Indonesia has a big potency to product dental gutta percha, as it is the biggest country that has productions of natural gutta percha. Indonesia is conducting natural gutta percha at PT. Perkebunann Nusantara VIII Cipetir-Jawa Barat. Chemical composition and bond are very important to be found out before making the root canal filling material from natural gutta percha. This study purposed to know the chemical composition differences between natural gutta percha and dental gutta percha using Fourier Transform Infrared Spectrometry (FTIR) characterizations. The methode is descriptive study that studies the FTIR Characterization between natural gutta percha and dental gutta percha. The characterized samples, each consist 20 mg of natural gutta percha and 20 mg dental gutta percha.The IR results the difference of transmission between natural gutta percha and dental gutta percha. Both show the presence of hydroxyl groups in the material indicates that the process is oxidative, but the dental gutta percha contain pro oxidant that increase the oxidation. The conclusion of this study showed there is FTIR characterization difference between natural gutta percha and dental gutta percha.
Potensi Getah Perca Indonesia Sebagai Bahan Baku Getah Perca Kedokteran Gigi Kosterman Usri; Nina Djustiana; Elin Karlina
Jurnal Material Kedokteran Gigi Vol 4 No 2 (2015): JMKG Vol 4 No 2 September 2015
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (224.064 KB)

Abstract

Gutta percha is used for many functions in dentistry but the most popular is the root canal filler. This root canal filler is not a pure gutta percha but mixed with other materials, such as zinc oxide, wax, resi, and metal salts. The raw material of gutta percha dentistry is obtained from gutta percha tree (Palaquium gutta Baill) which in Indonesia has been cultivated in commercial scale since 1901 in Cipetir Sukabumi, in this location since 1921 is also equipped with its processing plant. This condition is very supportive if that gutta percha will be used as raw material of gutta percha dentistry. However, this material is a raw material that needs to be mixed with other materials in order to conform the standardization in dentistry, for that needed a series of research to be able to make gutta percha dentistry in Indonesia.
Oral Lesion Caused by Improper Removable Partial Denture Riani Setiadhi; Kosterman Usri
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 (364.614 KB) | DOI: 10.32793/jmkg.v7i1.275

Abstract

Oral lesions are relatively common findings in clinical practice, can occur due to various factors such as trauma, systemic diseases, autoimmune disorders, malignancies. Local trauma as one of the cause of oral lesions majority due to poor dentures, fractured restorations and sharp edges of teeth. The lesions are commonly found on the mucosa that is subjected to the source of trauma such as buccal mucosa, lateral border of the tongue or lips. Removable partial denture is a denture that can be removed and reinserted without professional help. Poor removable denture which is an ill-fitting denture, rough/sharp/overextended flanges, or lack of retention/stability could cause oral lesions. This case report describes a 76 old year man complained of pain on his right lateral tongue since 6 months ago. He was wearing a removable upper right denture which cannot be remove for about a year. It was a rough and sharp self-curing acrylic denture. There was erythematous and pain on his lateral right of the tongue but no induration on palpation. Triamcinolone acetonide 0,1% in orabase was the given treatment for the right lateral of the tongue and referred him to the prosthodontic department for replacing the denture. The oral lesion was healed after one week of treatment and the poor denture was removed. As a conclusion dentures should be made properly by the expert in order to prevent oral lesions.
Co-Authors Amida, Aya Annisa Hasna Nurzahra Tauziri Arief Cahyanto Ayu Trisna Hayati Bambang Sunendar Purwasasmita, Bambang Sunendar Cahyanto, Arief Cucu Zubaedah Dudi Aripin Elin Karlina Elin Karlina Elin Karlina Farah Kholidah Fourier Dzar Eljabbar Latief Harlinton, Andrian Jonathan Hidayat, Opik Taopik I Made Joni Lisa Putri Lestari, Lisa Putri Marry Siti Mariam Mutia Annisa Nabilla Nina Djustiana Opik Taofik Hidayat Opik Taopik Hidayat Pramudiyanti, Nindya Renny Febrida Riani Setiadhi Rosida Manurung, Rosida Sanjaya, Arya Sri Tjahajawati Suherbowo, Natania Ramadhiani Sunardhi Widyaputra Tansza Setiana Putri Vara, Varisati Nalina Veni Takarini Viona, Nona Yandi Kusmulyandi Yanwar Faza Yanwar Faza