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"Latar Belakang: Kepercayaan diri individu dapat dilihat melalui aspek psikososial yang memiliki ketergantungan besar terhadap penampilan dentofasial. Perawatan restorasi gigi memiliki dampak positif dalam meningkatkan kepercayaan diri individu. Sistem adhesif adalah material yang dapat menyatukan dua permukaan yang berbeda, dalam hal ini permukaan gigi dan bahan restorasi. Pemahaman yang tepat dalam penggunaan sistem adhesif sangat krusial dalam keberhasilan perawatan restorasi gigi. Penggunaan adhesif sudah umum di kalangan dokter gigi yang di Indonesia, tetapi belum ditemukan penelitian yang mengevaluasi pemahaman dokter gigi di IKORGI Cabang Jakarta Pusat terhadap penggunaan sistem adhesif. Tujuan: Penelitian ini bertujuan untuk mengetahui pemahaman dokter gigi mengenai penggunaan sistem adhesif saat prosedur restoratif dan hubungannya terhadap rentang tahun kelulusan, sumber informasi, dan lokasi selama kerja praktik. Metode: Penelitian ini merupakan penelitian deskriptif dengan desain studi potong lintang (cross-sectional). Dilakukan secara daring dengan menggunakan google form selama November 2022 – Januari 2023. Hasil: Responden penelitian didominasi oleh responden berjenis kelamin perempuan dengan rentang waktu kelulusan 0-5 tahun sejak tahun kelulusan. Pemahaman responden mengenai sistem adhesif sudah cukup baik, dilihat dari skor maksimum responden adalah 4,25. Responden penelitian ini mayoritas paham terhadap protokol, tetapi menyesuaikan dengan ketersediaan produk adhesif dan isolasi gigi yang ada di tempat kerja praktik. Kesimpulan: Pemahaman dokter gigi di IKORGI cabang Jakarta Pusat sudah baik, meskipun masih ditemukan perbedaan bermakna antara beberapa variabel penelitian.

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Background: An Individual’s confidence can be seen through psychosocial aspects that have a large dependency on their dentofacial appearance. Dental restoration treatment has a positive impact on improving an individual’s self-confidence. An adhesive system is a material that bonds two different surfaces, which in this case the tooth surface and the restoration material. Proper understanding of the use of adhesive systems is crucial to the success of dental restoration treatment. Adhesives systems is common among dentists in Indonesia, but no research has been found that evaluates the knowledge of dentists in IKORGI Branch of Central Jakarta on the use of adhesive systems. Objective: Aims of this study to determine dentists' understanding of the use of adhesive systems during restorative procedures and its relationship to the range of years of graduation, sources of information, and location during practical work. Methods: This research is a descriptive study with a cross-sectional study design. It was executed online using “google form” during November 2022 - January 2023. Results: The research respondents were dominated by female respondents with a range of 0-5 years since graduation. The respondents understood the adhesive system quite well, as seen from the maximum score of the respondents was 4.25. Most respondents in this study understood the protocol but adjusted to the availability of adhesive products and dental insulation in the practical workplace. Conclusion: The understanding of dentists in the Central Jakarta branch of IKORGI is good, although there are some significant differences between the research variables studied."

"This 2nd edition is a complete revision with an update of the methods that have been investigated recently and that are now fully accepted by the adhesion community. Themes that are now treated in more detail include for example hybrid adhesives used for automotive applications, ecofriendly surface treatments, damage mechanics, joint durability prediction and functionally graded joints. There is also a new chapter related to the application of adhesives in the oil industry. Besides these content changes, there has been a complete revision of all chapters in terms of text, figures, tables and references for a more didactic character of this reference book.The Handbook of Adhesion Technology is intended to be the definitive reference in the field. Essential information is provided for all those concerned with adhesion, which is a phenomenon of interest in diverse scientific disciplines and of importance in a wide range of technologies. Therefore, this book includes the background science (physics, chemistry and materials science), engineering aspects and industry-specific applications. It is arranged in a user-friendly format with ten main sections: theory of adhesion, surface treatments, adhesive and sealant materials, testing of adhesive properties, joint design, durability, manufacture, quality control, applications and emerging areas. Each section contains about five chapters written by internationally renowned authors who are authorities in their fields.This book offers a quick, but authoritative, description of topics in the field of adhesion and the practical use of adhesives and sealants. Scientists and engineers of many different backgrounds who need to have an understanding of various aspects of adhesion technology will find it highly valuable. These will include those working in research or design, as well as others involved with marketing services. Graduate students in materials, processes and manufacturing will also want to consult it."

"Aplikasi sistem self adhesive pada sementasi pasak fiber sangat mudah dan penggunaanya meningkat pesat, tetapi penelitian mengenai kemampuan adhesinya masih terbatas. Penelitian ini dilakukan untuk menganalisis kemampuan adhesi sistem adhesif self etch dan self adhesive pada sementasi pasak fiber apakah sama besar atau tidak dengan total etch. Penelitian eksperimental laboratorik dilakukan menggunakan 27 gigi premolar satu mandibula yang telah disetujui oleh komisi etik, dibagi secara acak menjadi 3 kelompok. Pasak fiber disementasi dengan 3 sistem adhesif berbeda. Pada setiap gigi dilakukan pemotongan setebal 5 mm dari bagian servikal ke arah medial akar gigi, seluruh spesimen disimpan selama 24 jam dalam larutan salin pada suhu kamar, lalu dilakukan push out test menggunakan Universal Testing Machine (Shimidzu AG-5000E) dengan kecepatan 0,5 mm/menit. Hasil analisis univariat dan bivariat Anova satu arah menunjukkan kemampuan adhesi sistem total etch dan self etch sama besar (p<0.05), sedangkan sistem self adhesive memiliki kemampuan adhesi yang paling rendah (p>0.05). Aplikasi yang lebih mudah pada sistem self etch mampu memberikan kemampuan adhesi yang sama dengan sistem total etch.

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Application of self adhesive system on fiber post cementation is very simple and their use increase rapidly, however study in the adhesion capability is limited and insufficient. The aim of this study was to analyze whether self etch and self adhesive system are comparable to total etch system.

The experimental laboratory study was performed using 27 mandibular premolar teeth approved by ethics committee, randomly divided into 3 groups, fibre post were cemented in 3 different adhesive system. Specimen were prepared 5 mm in thickness from cervical to medial of the root, stored for 24 hours in saline solution at room temperature, push out test was performed using Universal Testing Machine (Shimidzu AG-5000E) with crosshead speed at 0.5 mm/min.

The results of univariat and one way Anova bivariat test showed that total etch and self etch system have a comparable adhesion capability (p<0.05), and self adhesive system has the lowest adhesion capability (p>0.05). With easier application, self etch system has a comparable adhesion capability to total etch system. Key Word: adhesion capability, fiber post, push out test, total etch, self etch, self adhesive."

"Material film adhesive yang digunakan PT Dirgantara Indonesia untuk pembuatan pesawat memiliki batas waktu penyimpanan di suhu ruang yang disebut work life. Untuk mengevaluasi work life film adhesive Z-15.429 telah dilakukan penelitian dengan tiga variasi lama penyimpanan film adhesive di suhu ruang yaitu 97.5 jam, 173 jam, dan 270.25 jam yang selanjutnya masing-masing diuji mekanik berupa shear test, peel test, dan drum peel test. Selain itu dilakukan juga uji Fourier Transform Infra Red (FTIR) untuk mengamati proses polimerisasi di suhu ruang dan pengamatan kerusakan akibat uji mekanik menggunakan mikroskop optik. Hasil penelitian menunjukkan bahwa hanya spesimen dengan film adhesive yang disimpan selama 97.5 jam di suhu ruang saja yang memenuhi standar PT Dirgantara Indonesia dengan nilai rata-rata kekuatan geser, nilai rata-rata beban pengelupasan hasil peel test, dan nilai rata-rata beban pengelupasan hasil drum peel test berturut-turut (38.06 ± 2.16) MPa, (355.62 ± 13.36) N, dan (648.17 ± 20.71) N serta mengalami 100% kerusakan kohesif.

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Adhesive film materials that are used by PT Dirgantara Indonesia for aircraft manufacturing have a time limit in room temperature storage that is called work life. To evaluate the work life of Z-15.429 adhesive films, a study was conducted for this adhesive film that was stored at room temperature within three different durations, namely 97.50, 173, and 270.25 hours. Each sample for each duration was then mechanical tested, including shear, peel, and drum peel tests. Moreover, Fourier Transform Infra Red (FTIR) was applied to observe the polymerization process of the adhesive film and optical microscope observation was conducted to study the failure of the specimens after mechanical testing.

The results showed that only adhesive film specimen which was stored for 97.50 hours in room temperature have met the PT Dirgantara Indonesia standard with the average values of shear strength, peeling load of peel, and peeling load of drum peel were (38.06 ± 2.16) MPa, (355.62 ± 13.36) N, and (648.17 ± 20.71) N respectively, with 100% of cohesive failure."

"[Penelitian ini bertujuan untuk mengetahui pengaruh kekasaran, proses phosphating, serta ketebalan adhesive bonding terhadap ketahanan delaminasi komposit laminat. Variasi kekasaran substrat, yaitu pada rentang 5-8 μm dan 10-13 μm, variasi terhadap proses phosphating, yaitu ada yang melalui proses phosphating dan ada yang tidak, serta variasi ketebalan adhesive baik primer ataupun topcoat dengan rentang 1-5 μm, 6-10 μm, serta 11-15 μm. Pembentukan komposit laminat ini dilakukan melalui proses transfer moulding pada suhu 160 C selama 450 detik. Komposit laminat yang sudah terbentuk kemudian diuji peel-off untuk mengetahui kekuatan delaminasinya lalu dikarakterisasi dengan SEM-EDX. Hasil menunjukan bahwa kekasaran permukaan, lapisan zinc phosphate, serta ketebalan adhesive bonding mempengaruhi ketahanan delaminasi komposit laminat yang diinterpretasikan dengan kekuatan ikat antarlapisan dan visual delaminasi. Kekasaran optimum terjadi pada rentang 10-13 μm dengan kekuatan ikat 179,68 N dan visual delaminasi R-R sebanyak 35%. Adanya lapisan zinc phosphate memberikan nilai kekuatan ikat optimum sebesar 157,38 N dan visual delaminasi R-R sebanyak 50%. Ketebalan adhesive primer optimum terjadi pada rentang 1-5 μm dengan kekuatan ikat 163,35 N dan visual delaminasi R-R sebanyak 50%. Ketebalan adhesive topcoat optimum terjadi pada rentang 6-10 μm dengan kekuatan ikat sebesar 154,65 N dan visual delaminasi R-R sebanyak 41,6%.;This study aims to determine the effect of roughness, phosphating process, and the thickness of the adhesive bonding into delamination resistance of laminate composite. Variation of the substrate roughness are 5-8 μm and 10-13 μm. Some substrates are coated by zinc phosphate and other substrate are uncoated. Variations of the thickness of adhesive primer and adhesive topcoat are in a range of 1-5 μm, 6-10 μm, and 11-15 μm. The process of forming the laminate composite occurs through transfer molding process at 1600C in 450 seconds. Laminate composite that has been formed then tested by peel-off test to determine the strength of delamination. Visual of delamination was characterized by SEM-EDX. The results showed that the optimum surface roughness occurs in the range of 10-13 μm with bonding strength 179.68 N and 35% of R-R visual. The coated substrate has a higher bonding strength compared to uncoated substrate, which is 157.38 N and 50% of R-R visual. The optimum thickness of adhesive primer occurs in the range of 1-5 μm with bonding strength is 163.35 N and 50% of R-R visual. While the optimum thickness of adhesive topcoat occurs in the range of 6-10 μm with a bonding strength is 154.65 N and 41,6% of R-R visual;This study aims to determine the effect of roughness, phosphating process, and the thickness of the adhesive bonding into delamination resistance of laminate composite. Variation of the substrate roughness are 5-8 μm and 10-13 μm. Some substrates are coated by zinc phosphate and other substrate are uncoated. Variations of the thickness of adhesive primer and adhesive topcoat are in a range of 1-5 μm, 6-10 μm, and 11-15 μm. The process of forming the laminate composite occurs through transfer molding process at 1600C in 450 seconds. Laminate composite that has been formed then tested by peel-off test to determine the strength of delamination. Visual of delamination was characterized by SEM-EDX. The results showed that the optimum surface roughness occurs in the range of 10-13 μm with bonding strength 179.68 N and 35% of R-R visual. The coated substrate has a higher bonding strength compared to uncoated substrate, which is 157.38 N and 50% of R-R visual. The optimum thickness of adhesive primer occurs in the range of 1-5 μm with bonding strength is 163.35 N and 50% of R-R visual. While the optimum thickness of adhesive topcoat occurs in the range of 6-10 μm with a bonding strength is 154.65 N and 41,6% of R-R visual, This study aims to determine the effect of roughness, phosphating process, and the thickness of the adhesive bonding into delamination resistance of laminate composite. Variation of the substrate roughness are 5-8 μm and 10-13 μm. Some substrates are coated by zinc phosphate and other substrate are uncoated. Variations of the thickness of adhesive primer and adhesive topcoat are in a range of 1-5 μm, 6-10 μm, and 11-15 μm. The process of forming the laminate composite occurs through transfer molding process at 1600C in 450 seconds. Laminate composite that has been formed then tested by peel-off test to determine the strength of delamination. Visual of delamination was characterized by SEM-EDX. The results showed that the optimum surface roughness occurs in the range of 10-13 μm with bonding strength 179.68 N and 35% of R-R visual. The coated substrate has a higher bonding strength compared to uncoated substrate, which is 157.38 N and 50% of R-R visual. The optimum thickness of adhesive primer occurs in the range of 1-5 μm with bonding strength is 163.35 N and 50% of R-R visual. While the optimum thickness of adhesive topcoat occurs in the range of 6-10 μm with a bonding strength is 154.65 N and 41,6% of R-R visual]"

"This book deals with the most recent numerical modeling of adhesive joints. Advances in damage mechanics and extended finite element method are described in the context of the finite element method with examples of application. The book also introduces the classical continuum mechanics and fracture mechanics approach and discusses the boundary element method and the finite difference method with indication of the cases they are most adapted to. At the moment there a no numerical technique that can solve any problem and the analyst needs to be aware of the limitations involved in each case."

"Penelitian ini bertujuan untuk membandingkan kuat rekat geser dan Adhesive Remnant Index (ARI) breket metal yang direkatkan dengan dua semen resin light cure berbeda. Dua puluh gigi premolar atas manusia ditanam dalam akrilik dan dibagi menjadi dua kelompok; kelompok A: Transbond XT + breket Mini Dyna Lock, kelompok B: Enlight + breket Mini Dyna Lock. Hasil penelitian menunjukkan kuat rekat geser kelompok A adalah 12,46 ± 0,35 MPa, ARI: 1 dan 2, dan kelompok B adalah 9,69 ± 0,53 MPa, ARI: 2, (p <0,05). Disimpulkan bahwa terdapat perbedaan bermakna kuat rekat geser pada kedua kelompok dengan kegagalan ikatan bersifat kohesif.

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The aims of this study was to compare shear bond strength (SBS) and Adhesive Remnant Index (ARI) of metal bracket bonded with two different light cured resin cements. Twenty extracted human upper premolar embedded in acrylic and divided into two groups; Group A: Transbond XT + Mini Dyna Lock brackets, group B: Enlight + Mini Dyna Lock brackets.

The results showed SBS of group A was 12.46 ± 0.35 MPa, ARI: 1 and 2, and group B was 9.69 ± 0.53 MPa , ARI: 2, (p <0.05). It was concluded that the SBS of two groups was significantly different with cohesive bond failure."

"The aim of this research is to see the effect of various dentin conditioners (phosphoric acid) to the bond strength between resin adhesive HNPM/TEGDMA (2 Hydroxy-3,2-Napthoxy-Propyl Methacrylate/Trietilen Glikol di Methacrylate) and dentin tissue of bovine teeth. Dentin conditioner that was used are phosphoric acid solution 10%, 25%, 35% (Group A1, A2, A3). Specimens was divided into 3 Groups, each group has 10 specimens. Bond strength test used "Universal Testing Machine". A G 5000 and SHIMADZU type. The result of this research shows average differences of bond strength of each group. Anova test there is a significant difference (8.485 and p < 0,05). Double comparison Tukey test among groups generally are significant different (p<0,05) except between A2 and A3 group. The result of the research states there are effects of various dentin conditioners to the bond strength between resin adhesive NHPM/TEGDMA and dentin tissue."

"Reseksi tulang distal femur memerlukan tindakan rekonstruksi defek osteoartikular menggunakan megaprostesis distal femur. Rekonstruksi megaprostesis memiliki masa pakai terbatas yang membutuhkan tindakan pergantian atau revisi. Tindakan revisi megaprostesis menimbulkan kehilangan masa tulang dan membutuhkan ukuran megaprostesis yang lebih panjang. Belum ada megaprostesis dengan ruang tandur tulang yang dapat memfasilitasi regenerasi tulang.Penelitian ini mengembangkan desain prototipe megaprostesis dengan metode reverse engineering menggunakan CT scan femur orang dewasa dan implan megaprostesis benchmarking, melakukan pengujian simulasi Finite Element Analysis (FEA) dan pengujian biomekanik menggunakan mesin uji Universal Tensile Machine (UTM) Tensilon RTF-2350 berdasarkan skema ISO 10328 dan ASTM F1800, analisis antropometri ekstremitas bawah dan lutut pada anak remaja dan dewasa dan implementasi pada kadaver untuk mendeskripsikan langkah pembedahan dan analisis inter-observer diskusi pakar tentang kelayakan pemasangan prototipe.Prototipe α plus megaprostesis femur distal dengan ruang tandur tulang dibuat dari bahan stainless steel dan polyethylene dengan menggunakan mesin Computer Numerical Control/CNC 3 dan 5 aksis. Prototipe ini adaptif secara modular dengan paku intrameduler femur (femoral intramedullary nail) dan pelat pengunci (broad plate locking). Kombinasi ini memberi ruang tandur tulang untuk menerapkan tehnik Masquelet dalam regenerasi tulang. Pada simulasi Finite Elemen Analysis (FEA) dan pengujian biomekanik didapatkan titik lemah pada sambungan ujung distal paku intrameduler femur dengan sekrup pengunci (locking screw) , femoral block step (FBS) 1 dan 2 yang terbuat dari polyethylene dan sambungan pelat pengunci dengan sekrup pada femur proksimal. Terdapat perbedaan antropometri ekstremitas bawah dan sendi lutut antara anak remaja dan dewasa, laki laki dan perempuan yang memberikan pertimbangan pembuatan ukuran implan yang berbeda. Tehnik pembedahan dan pemasangan implan dapat diimplementasi pada kadaver dan lebih dari 60 % pakar ortopedi onkologi memberikan opini sangat baik terhadap kelayakan pembedahan dan pemasangan implan prototipe.Prototipe α plus megaprostesis femur distal dengan ruang tandur tulang berpotensi memberikan solusi dalam hal ruang untuk regenerasi tulang dengan penyempurnaan desain dan pemilihan bahan manufaktur implan yang lebih baik untuk diterapkan pada manusia.

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Resection for femur distal bone requires the reconstruction of osteoarticular defects using distal femur megaprostheses. Megaprosthesis reconstruction has a limited lifespan that requires further replacement or revision. The revision of the megaprosthesis causes bone loss and requires a longer megaprosthesis size. There is no megaprosthesis with a bone chamber that can facilitate bone regeneration.

This study develop a prototype design of a megaprosthesis by reverse engineering method using CT scan of adult femur and benchmarking megaprosthesis implant, conducted Finite Element Analysis (FEA) simulation testing and biomechanical testing using the Tensilon RTF-2350 Universal Tensile Machine (UTM) testing machine based on ISO 10328 and ASTM F1800 schemes, anthropometric analysis of lower extremities and knees in adolescents and adults and implementation on cadavers to describe surgical steps and inter-observer analysis expert discussion on the feasibility of prototyping.

The prototype α plus distal femur megaprosthesis with a bone chamber is made from stainless steel and polyethylene materials using 3 and 5 axis Computer Numerical Control/CNC machines. The prototype is modularly adaptive with femoral intramedullary nails and broad plate locking. This combination gives the bone chamber to apply the Masquelet technique in bone regeneration. Simulation of Element Analysis (FEA) and biomechanical testing show weakness points were obtained at the distal end joints of intramedullary femoral nail with locking screw, femoral block steps (FBS) 1 and 2 which made of polyethylene, and the connection of the locking plate with screws on the proximal femur was obtained. There are differences in the anthropometry of the lower extremities and knee joints between adolescents and adults, men and women, which gives consideration to the manufacture of different implant sizes. Surgical techniques and implant placement can be implemented on the cadaver and more than 60% of orthopedic oncology experts give a very good opinion on the feasibility of surgery and installation of prototype implants.

The prototype of α plus distal femur megaprosthesis with bone plantation chamber has the potential to provide a solution in terms of space for bone regeneration with improved design and better selection of implant manufacturing materials for application in humans."