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Abstrak :
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.

Abstrak :
[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]

Abstrak :
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.

Abstrak :
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. ......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.

Abstrak :
Pendahuluan: Lem fibrin telah secara rutin digunakan dalam prosedur bedah saraf. Substansi ini dapat diperoleh dengan beberapa metode, dua yang paling populer adalah lem fibrin komersial (LK) yang siap pakai dan lem fibrin sintesis mandiri (SM). Studi ini membantu dokter bedah memilih lem yang sesuai dengan kebutuhan mereka, berdasarkan perbandingan sifat lekat mereka dalam pengukuran yang terstandar. Metode: lem fibrin komersial yang siap pakai dan lem fibrin sintesis mandiri diuji dengan uji tromboelastograf. Kenormalan distribusi data diuji dengan Shapiro-Wilk. Uji perbandingan dilakukan menggunakan uji Mann Whitney. Hasil: SM memiliki waktu reaksi (R) yang lebih lama daripada LK, dengan median 17,4 (12,3-20,1) menit dibandingkan dengan 0,2 menit, nilai p <0,001. SM memiliki nilai K (K) yang lebih lama daripada LK, dengan median 2,2 (2,0-2,8) menit dibandingkan dengan 0,8 menit, nilai p <0,001. SM memiliki amplitudo maksimum kekuatan (MA) yang lebih rendah daripada LK, dengan median 67,4 (63,9-69,4)% dibandingkan dengan 87,4 (80,9-92,5)%, nilai p <0,001. Secara kualitatif, LK memiliki trombus yang lebih pejal sedangkan trombus SM terikat pada cangkir TEG sampai akhir uji. Kesimpulan: Penulis menyarankan menggunakan SM untuk menutup perdarahan atau kebocoran yang tidak memiliki tekanan tinggi karena memiliki MA yang lebih rendah. Teknik premixed dapat digunakan untuk mengatasi R dan K yang lebih lama. ......Introduction: Fibrin glues have been used routinely in Neurosurgery procedures. This substance can be obtainad by several method, two most popular are ready-to–use two-component fibrin glue and cryoprecipitate glue. However, the popularity between two products are not equal. This study help surgeon choose better glue suitable to their need, based on comparison of their adhesive properties in standarized measurement. Methods: cryoprecipitate glue (CG) and two-component fibrin glue (TG) was tested by thromboelastograph assay analyzer. The data’s normality of distribution was tested by Shapiro-Wilk. The comparison test was done using Mann Whitney test. Results: CG has longer reaction time (R) than TG, with a median of 17.4 (12.3-20.1) minutes compared to 0.2 minutes, p value <0.001. CG has longer K value (K) than TG, with a median of 2.2 (2.0-2.8) minutes compared to 0.8 minutes, p value <0.001. CG has lower maximum amplitude of strength (MA) than TG, with a median of 67.4(63.9-69.4)% compared to 87.4(80.9-92.5)%, p value <0.001. Qualitatively, TG had more solid clot and CG’s clot attached to the TEG cup until the end of the test. Conclusion: Authors recommend using CG to seal bleeding or leakage without high tension due to its lower MA. Premixed technique is more suitable to overcome longer R and K.

Abstrak :
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.

Abstrak :
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.

Abstrak :
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.

Abstrak :
It is commonly accepted that the majority of engineering failures happen due to fatigue or fracture phenomena. Adhesive bonding is a prevailing joining technique, widely used for critical connections in composite structures. However, the lack of knowledge regarding fatigue and fracture behaviour, and the shortage of tools for credible fatigue design, hinders the potential benefits of adhesively bonded joints. The demand for reliable and safe structures necessitates deep knowledge in this area in order to avoid catastrophic structural failures. This book reviews recent research in the field of fatigue and fracture of adhesively-bonded composite joints. The first part of the book discusses the experimental investigation of the reliability of adhesively-bonded composite joints, current research on understanding damage mechanisms, fatigue and fracture, durability and ageing as well as implications for design. The second part of the book covers the modelling of bond performance and failure mechanisms in different loading conditions.