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Stress distribution analysis of seat and non-seat preparation design for orden cast post using 2D finite element method Miranda, Aldilla; Subrata, Gantini; Hasratiningsih, Zulia; Dirgantara, Tatacipta
Padjadjaran Journal of Dentistry Vol 23, No 3 (2011): November
Publisher : Faculty of Dentistry Universitas Padjadjaran, Indonesia

The post is used to retain a core that supports the definitive restoration. One of the important factors in the prognosis of post-endodontic restoration system is the post space preparation design which effects to the distribution of stresses. The purpose of this study was to analyze the effect of post space preparation design at the cervical area of the root to the stress distribution on static loading using (two dimensions) finite element method. This was a numeric simulation study using two 2D digital models: seat and non-seat design of maxillary central incisors using commercial software of finite element. The procedures of pre-processing, solution, and post-processing were used to evaluate the distribution of internal stress caused by static loading 110 N which was applied at 135Â° angle with tooth longitudinal axis on the palatal surface of the core. Both models of restoration with cast post-core of Orden alloy were divided into 15,400 triangular elements. This study showed that the stress distribution from the loading location to the location of stress concentration and the value of maximum stress at cervical part of the root at non-seat design was lower than the seat design (seat design 3.69 times greater than non-seat). This study proved that non-seat design distributes stress better than seat design.

Analysis of submerged implant towards mastication load using 3D finite element method (FEM) Ritonga, Widia Hafsyah Sumarlina; Rusjanti, Janti; Rusminah, Nunung; Miranda, Aldilla; Dirgantara, Tatacipta
Padjadjaran Journal of Dentistry Vol 28, No 3 (2016): November
Publisher : Faculty of Dentistry Universitas Padjadjaran, Indonesia

Introduction: The surgical procedure of dental implant comprising one stage surgery for the non-submerged implant design and two stages for submerged. Submerged design is frequently used in Faculty of Dentistry Padjadjaran University as it is safer in achieving osseointegration. This study has been carried out to evaluate resistant capacity of an implant component design submerged against failure based on location and the value of internal stress during the application of mastication force using the 3D Finite Element Method (FEM). Methods: The present study used a CBCT radiograph of the mandibular patient and Micro CT Scan of one submerged implant. Radiograph image was then converted into a digital model of 3D computerized finite element, subsequently inputted the material properties and boundary condition with 87N occlusion load applied and about 29N for the shear force. Results: The maximum stress was found located at the contact area between the implant and alveolar crest with stress value registered up to 193.31MPa located within an implant body where is understandable that this value is far below allowable strength of titanium alloy of 860 MPa. Conclusion: The location of the maximum stress was located on the contact area between the implant-abutment and alveolar crest. This implant design is acceptable and no failure observed under mastication load.

KEBUTUHAN PERAWATAN PERIODONTAL PADA PASIEN OBESITAS DI LINGKUNGAN RSGM FKG UNPAD Aldilla Miranda; Nunung Rusminah; Prajna Metta
Journal of Syiah Kuala Dentistry Society Vol 2, No 2 (2017): JULY
Publisher : Dentistry Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (250.197 KB)

Body Mass Index (BMI) is very related to various periodontal index such as attachment loss, pocket depth, gingival bleeding and calculus index according to a survey conducted in the United States (the third National Health and Nutrition Examination Survey/NHANES III). This study aimed to determine the Periodontal Treatment Needs of obese patients in FKG RSGM UNPAD. This kind of research is descriptive survey method, obtained a total of 15 obese subjects according to the criteria of BMI (Body Mass Index). Then performed plaque assessment using plaque index of Silness and Loe, and assesment of Community Periodontal Index Treatment Needs (CPITN). The results showed that for the CPITN, 60% of the sample experienced bleeding gums (bleeding), CPITN score 1 and 40% of the sample experienced bleeding and calculus there, CPITN score 2. Conclusions, the results showed all of obese patients in FKG RSGM UNPAD, need OHI, and more than half need scaling and prophylaxis as periodontal treatments.Keyword: Obesity, Periodontal Disease, CPITN

Tunneling connective tissue graft sebagai prosedur perawatan resesi gusi kelas I MillerTunnelling connective tissue graft as a treatment procedure for Miller Class I gingival recession Prajna Metta; Heni Puspitadewi; Aldilla Miranda; Nunung Rusminah
Jurnal Kedokteran Gigi Universitas Padjadjaran Vol 32, No 2 (2020): November 2020 (Suplemen 1)
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jkg.v32i1.18042

Pendahuluan: Resesi gusi pada regio anterior rahang atas seringkali menjadi perhatian dari segi estetik, bentuk dan fungsi. Resesi dapat terjadi pada satu atau beberapa gigi dan pada satu atau beberapa permukaan, sehingga menyebabkan kehilangan perlekatan dan terbukanya permukaan akar. Tujuan laporan kasus ini mempresentasikan keberhasilan perawatan resesi gusi kelas I Miller menggunakan teknik tunneling connective tissue graft. Laporan kasus: Pasien wanita, 37 tahun, datang dengan keluhan hipersensitifitas pada gigi depan dan belakang rahang atas serta gigi-gigi terasa lebih memanjang. Pemeriksaan klinis menunjukkan resesi gusi yang bervariasi sebesar 2-4 mm tanpa melibatkan mucogongival junction yang meluas dari gigi 15 sampai 25. Terdapat tambalan glass ionomer pada daerah servikal gigi 22 sampai 24. Hasil pengukuran lebar gusi berkeratin lebih dari 3 mm. Diagnosa dari kasus ini adalah kelainan mucogingival multipel Kelas I Miller. Rencana perawatan yang akan dilakukan adalah prosedur tunneling connective tissue graft pada regio anterior labial rahang atas 22 sampai 24. Prosedur dilakukan dengan menutup bagian akar yang terbuka menggunakan connective tissue dari daerah palatal area premolar yang kemudian difiksasi dengan teknik jahitan anchorage. Perawatan ini menunjukkan hasil berupa penambahan ketebalan gusi berkeratin dan pengurangan sensitifitas akar tanpa adanya kekambuhan setelah enam bulan pasca bedah. Simpulan: Teknik tunneling dengan connective tissue graft dapat menjadi pilihan pada perawatan resesi gusi kelas I Miller dalam kasus ini berhasil menutup seluruh permukaan akar yang terbuka dan tidak terjadi relaps setelah enam bulan.Kata kunci: Connective tissue graft, resesi, penutupan akar, tunneling.. ABSTRACTIntroduction: Gingival recession in the maxillary anterior region is often becoming aesthetical, shape, and functional concern. Recession can occur on one or several teeth and one or more surfaces, causing attachment loss and the root surface opening. This case report was aimed to present the successful treatment of Miller Class I gingival recession with the tunnelling connective tissue graft technique. Case report: Female patient, 37 years old, presented with complaints of hypersensitivity in the front and back of the maxilla and elongated-teeth sensation. Clinical examination showed gingival recession varying by 2-4 mm without involving the mucogingival junction extending from teeth 15 to 25. A glass ionomer filling was performed in the cervical area of teeth 22 to 24. The measurement result was keratinised gingival width of more than 3 mm. The case diagnosis was multiple Miller Class I mucogingival abnormalities. The treatment plan performed was the tunnelling connective tissue graft procedure in the maxillary anterior labial region 22 to 24. The procedure was performed by covering the exposed root using the connective tissue from the palatal area of the premolar area, which was then fixed with an anchorage suture technique. This treatment increase in keratinised gingival thickness and reduction in root sensitivity without recurrence after six months after surgery. Conclusion: Tunneling connective tissue graft can become an option in the treatment of Miller Class I gingival recession. In this case, it succeeded in covering the entire exposed root surface and does not relapse after six months.Keywords: Connective tissue graft, recession, root coverage, tunneling.

Stress distribution analysis of seat and non-seat preparation design for orden cast post using 2D finite element method Aldilla Miranda; Gantini Subrata; Zulia Hasratiningsih; Tatacipta Dirgantara
Padjadjaran Journal of Dentistry Vol 23, No 3 (2011): November 2011
Publisher : Faculty of Dentistry Universitas Padjadjaran

The post is used to retain a core that supports the definitive restoration. One of the important factors in the prognosis of post-endodontic restoration system is the post space preparation design which effects to the distribution of stresses. The purpose of this study was to analyze the effect of post space preparation design at the cervical area of the root to the stress distribution on static loading using (two dimensions) finite element method. This was a numeric simulation study using two 2D digital models: seat and non-seat design of maxillary central incisors using commercial software of finite element. The procedures of pre-processing, solution, and post-processing were used to evaluate the distribution of internal stress caused by static loading 110 N which was applied at 135° angle with tooth longitudinal axis on the palatal surface of the core. Both models of restoration with cast post-core of Orden alloy were divided into 15,400 triangular elements. This study showed that the stress distribution from the loading location to the location of stress concentration and the value of maximum stress at cervical part of the root at non-seat design was lower than the seat design (seat design 3.69 times greater than non-seat). This study proved that non-seat design distributes stress better than seat design.

Analysis of submerged implant towards mastication load using 3D finite element method (FEM) Widia Hafsyah Sumarlina Ritonga; Janti Rusjanti; Nunung Rusminah; Aldilla Miranda; Tatacipta Dirgantara
Padjadjaran Journal of Dentistry Vol 28, No 3 (2016): November 2016
Publisher : Faculty of Dentistry Universitas Padjadjaran

Introduction: The surgical procedure of dental implant comprising one stage surgery for the non-submerged implant design and two stages for submerged. Submerged design is frequently used in Faculty of Dentistry Padjadjaran University as it is safer in achieving osseointegration. This study has been carried out to evaluate resistant capacity of an implant component design submerged against failure based on location and the value of internal stress during the application of mastication force using the 3D Finite Element Method (FEM). Methods: The present study used a CBCT radiograph of the mandibular patient and Micro CT Scan of one submerged implant. Radiograph image was then converted into a digital model of 3D computerized finite element, subsequently inputted the material properties and boundary condition with 87N occlusion load applied and about 29N for the shear force. Results: The maximum stress was found located at the contact area between the implant and alveolar crest with stress value registered up to 193.31MPa located within an implant body where is understandable that this value is far below allowable strength of titanium alloy of 860 MPa. Conclusion: The location of the maximum stress was located on the contact area between the implant-abutment and alveolar crest. This implant design is acceptable and no failure observed under mastication load.

THE ENAMEL ROUGHNESS AFTER CONVENTIONAL VERSUS AIR POLISHING: A SYSTEMATICAL REVIEW David Tjoea; Maria Theresia Beatrix; Prajna Metta; Aldilla Miranda; Amaliya Amaliya
B-Dent: Jurnal Kedokteran Gigi Universitas Baiturrahmah Volume 8, Nomor 2, September 2021 (Special Edition)
Publisher : Universitas Baiturrahmah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33854/jbd.v8i2.896

Introduction: Polishing after scaling and root planing provides a smoother tooth surface and improves patient convenience. Recently, a novel polishing system using the air-driven high-pressured device is introduced, but the advantage over conventional polishing is still questionable. This article aims to provide a comprehensive literature study regarding dental polishing by comparing the surface roughness after conventional and air polishing systems. To conduct this review, Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed. Studies published before November 29th, 2019 were systematically reviewed under “air-polishing”, “enamel roughness”, “conventional polishing”, “scanning electron microscopy” and “10 years” publication dates files with PubMed and Google Scholar database. Review: Dental polishing assists the removal of dental plaque and stains to achieve healthy periodontal tissue. The air-polishing device cleans the deeper surface with minimal damage on enamel, the efficacy depends on handpiece degree angulation to the enamel surface, time of exposure, and the powder particle size used. The air-driven device takes a shorter working time and is easy to handle compared to conventional polishing. Prophylaxis paste in conventional polishing is abrasive, hence flattening the enamel surface. Conclusion: Both techniques show efficacy in polishing procedures, nevertheless air polishing provides a smoother surface compared to conventional devices.

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