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All Journal Dentika Dental Journal MKGK (Majalah Kedokteran Gigi Klinik) (Clinical Dental Journal) UGM Dental Journal (Majalah Kedokteran Gigi) Jurnal Kedokteran Gigi Universitas Padjadjaran Padjadjaran Journal of Dentistry Journal of Dentomaxillofacial Science Padjadjaran Journal of Dental Researchers and Students Indonesian Journal of Prosthodontics
Setyawan Bonifacius
Universitas Padjadjaran
Biochemistry, Genetics & Molecular Biology Dentistry Health Professions Immunology & microbiology Medicine & Pharmacology Public Health

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Management of missing incisor with tooth malposition using removable orthodontic appliances and modified design adhesive bridge: a case report Marshaliana, Cindy Lestari; Sinaga, Valentine Rosadi; Bonifacius, Setyawan; Novianti, Vita Mulya Passa
Padjadjaran Journal of Dentistry Vol 37, No 1 (2025): April 2025 (Supplements 1)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol37no1.59214

Abstract

Introduction: The loss of anterior teeth can lead to aesthetic, phonetic, and functional issues. A lithium disilicate adhesive bridge can be a good alternative and a viable compromise in cases of anterior tooth loss. The advantages include minimally invasive preparation, adhesive system, better retention, and aesthetics compared to metal materials. Removable orthodontic treatment is a preliminary option for cases of minor tooth malposition to achieve an ideal dental arch. This case report describes the management sequence for a missing incisor with tooth malposition using removable orthodontic appliances and modified design adhesive bridge. Case report: A 19-year-old female patient visited Dental Hospital Universitas Padjadjaran, Bandung with an issue of missing left central incisor due to traffic accident, and the right central incisor being in a crossbite position. The patient wanted to use a fixed dental prosthesis to improve her appearance but had not yet undergone correction for the misaligned tooth. Discussion: The patient was provided with a temporary removable dental prosthesis with removable orthodontic modifications including the addition of bite risers. Subsequently, a modified design adhesive bridge with lithium disilicate material was planned. Conclusion: The combination of removable orthodontic treatment with a final restoration utilizing a modified design adhesive bridge using lithium disilicate material for the upper anterior teeth can enhance patient satisfaction by addressing aesthetic concerns and improving phonetic function and chewing ability.
Shear bond strength of two ceramic repair system to lithium disilicate: An in-vitro comparison Sinaga, Valentine Rosadi; Bonifacius, Setyawan; Sumarsongko, Taufik
Padjadjaran Journal of Dentistry Vol 33, No 2 (2021): July 2021
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol33no2.25516

Abstract

Introduction: The improvement of ceramic has increased due to highly demand for aesthetic restoration. Ceramic at its nature is a brittle material that highly susceptible to be cracked, that leads to chipping and fracture of the restoration. Composite resin frequently used as a replacement for ceramic repair as a simple and fast solution. The success relies on the bond strength between ceramic and composite. The purpose of this study was to evaluate the shear bond strength of two ceramic repair system to low-glass ceramic lithium disilicate. Methods: This study was experimental laboratory, ten specimens of lithium disilicate ceramic was fabricated. Specimen was divided into two groups, first group include: grinding and treated with ceramic primer and second group: acid etching with hydrofluoric acid and treated with silane. Each specimen was subjected to a shear load at the parallel speed of 0,5mm/minutes until fracture using universal testing machine. Results: The shear bond strength achieved in group two (acid etching and silane) was higher than the group one (grinding and ceramic primer). The t-test one tailed analysis yielded p value 0,0057. The different was significant (p value < 0,05). Conclusion: In this study it is concluded that when treated with acid etching hydrofluoric acid and silane, lithium disilicate yielded higher bond strength with resin composite than when treated with grinding and ceramic primer.
Assessment of the taper angle in porcelain-fused-to-metal crown preparation performed by dental students: Study observational Jonathan, Audree Geraldine; Bonifacius, Setyawan; Alamsyah, Gian Nur; Sukotjo, Cortino
Padjadjaran Journal of Dental Researchers and Students Vol 10, No 1 (2026): February 2026
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjdrs.v10i1.69963

Abstract

ABSTRACTIntroduction: Indirect restorations, such as fixed porcelain-fused-to-metal (PFM) crown and bridge prostheses, require tooth preparation that follows established principles to achieve restoration success. One of the preparation principles that needs to be considered is the taper angle, resulting from the axial wall tapering. To achieve maximum retention, the recommended taper angle is 6°. In clinical practice, preparation errors are frequently found, such as over-reduction and difficulties in axial tooth reduction. Thus, clinical education is required to improve students’ competence and skills to achieve recommended and more precise preparation results. The aim of this study was to evaluate the taper angle of porcelain-fused-to-metal (PFM) crown preparations performed by dental students. Methods: The study was conducted using a descriptive observational design with a total sample of 30 patients at the Prosthodontics Department at RSGM Unpad treated by clinical students of FKG Unpad. The patients’ jaws were scanned using a digital intraoral scanner, then the size of the taper angles were measured using CorelDRAW, with the ideal taper angle of 6-10°. The collected data were analyzed statistically using the chi-square test. Results: The average taper angle formed mesiodistally and buccolingually was 25,0° ± 14,5° and 14,9° ± 12,7° respectively, both of which were greater than the recommended taper angle. Conclusion: The preparation of porcelain-fused-to-metal performed by FKG Unpad clinical students did not reach the ideal taper angle. Dental students should receive hands-on clinical training to evaluate their tooth preparation performance and outcomes, in order to achieve high quality dental care for patients, using either conventional methods (extracted teeth) or digital methods (dental simulators, augmented reality).KEYWORDS: porcelain-fused-to-metal crown restoration, taper angle, tooth preparationPenilaian sudut taper pada preparasi mahkota porcelain-fused-to-metal yang dilakukan oleh mahasiswa kedokteran gigi: Studi observasionalABSTRAKPendahuluan: Restorasi tidak langsung, seperti mahkota dan jembatan tetap porcelain-fused-to-metal (PFM), memerlukan preparasi yang harus mengikuti prinsip preparasi gigi yang telah ditetapkan untuk mencapai keberhasilan restorasi. Salah satu prinsip preparasi yang perlu diperhatikan adalah sudut taper yang dihasilkan dari kemiringan dinding aksial. Untuk mencapai retensi maksimal, sudut taper yang direkomendasikan adalah 6°. Dalam praktik klinis, kesalahan preparasi masih sering ditemukan, misalnya reduksi berlebih (over-reduction) dan kesulitan dalam melakukan reduksi aksial gigi. Oleh karena itu, pendidikan pada tingkat klinis diperlukan untuk melatih kompetensi mahasiswa serta meningkatkan keterampilan mereka agar dapat mencapai hasil preparasi yang sesuai rekomendasi dan lebih presisi. Tujuan penelitian ini untuk menilai sudut taper pada preparasi mahkota porcelain-fused-to-metal (PFM) oleh mahasiswa kedokteran gigi.  Metode: Penelitian ini dilakukan menggunakan studi observasional deskriptif dengan jumlah sampel 30 pasien di Departemen Prostodonsia Rumah Sakit Gigi dan Mulut Universitas Padjadjaran yang dirawat oleh mahasiswa klinik Fakultas Kedokteran Gigi Universitas Padjadjaran. Rahang pasien dipindai menggunakan pemindai intraoral digital, kemudian besar sudut taper diukur menggunakan CorelDRAW, dengan sudut taper ideal 6–10°. Data yang diperoleh dianalisis secara statistik menggunakan uji chi-square. Hasil: Rerata sudut taper yang terbentuk secara mesiodistal dan bukolingual berturut-turut adalah 25,0° ± 14,5° dan 14,9° ± 12,7°, yang lebih besar daripada nilai sudut taper yang direkomendasikan. Simpulan: Preparasi porcelain-fused-to-metal yang dilakukan oleh mahasiswa klinik tidak mencapai nilai sudut taper ideal. Mahasiswa kedokteran gigi direkomendasikan untuk dilatih melalui pengalaman klinis langsung guna mengevaluasi performa dan hasil preparasi gigi mereka, sehingga dapat mencapai kualitas perawatan gigi yang tinggi bagi pasien, baik dengan metode konvensional (gigi asli pasca-ekstraksi) maupun metode digital (simulator kedokteran gigi, augmented reality).KATA KUNCI: restorasi mahkota porcelain-fused-to-metal, sudut taper, preparasi gigi.
Co-Authors Deddy Firman Dyah Nindita Carolina Fidela D. Aziza Gian Nur Alamsyah Halim, Davin Adijaya Hasna Djiab Ira Komara, Ira Jessicca, Maria Jonathan, Audree Geraldine Lestari, Brigitta Swasti Lisda Damayanti Lusi Epsilawati Maria Jessicca Marshaliana, Cindy Lestari Martono, Hadisusanto Ali Naliani, Silvia Novianti, Vita Mulya Passa Rasmi Rikmasari Sri W. Rais Sri Wahyuningsih Rais Sukotjo, Cortino Taufik Sumarsongko Valentine Rosadi Sinaga