Evolutionary Changes in Bridge Designs

Madhok, Dr Sakshi; Madhok, Dr Saksham

doi:10.9790/0853-13645056

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…The usefulness of fixed-fixed bridges is constrained by complex clinical settings. As a result, there are many designs that take into account the patient's needs, anatomical constraints, and biomechanics [14]. A cantilevered single-abutment fixed partial prosthesis can be used to treat patients with distal extension edentulous space [15].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Tensile Bond Strength of Fixed-Fixed Versus Cantilever Single- and Double-Abutted Resin-Bonded Bridges Dental Prosthesis

et al. 2022

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Resin-bonded fixed dental prostheses (RBFDP) are minimally invasive alternatives to traditional full-coverage fixed partial dentures as they rely on resin cements for retention. This study compared and evaluated the tensile bond strength of three different resin-bonded bridge designs, namely, three-unit fixed-fixed, two-unit cantilever single abutment, and three-unit cantilever double-abutted resin-bonded bridge. Furthermore, the study attempted to compare the tensile bond strengths of the Maryland and Rochette types of resin-bonded bridges. Based on the inclusion and exclusion criteria, a total of seventy-five extracted maxillary incisors were collected and later were mounted on the acrylic blocks. Three distinct resin-bonded metal frameworks were designed: three-unit fixed-fixed (n = 30), two-unit cantilever single abutment (n = 30), and a three-unit cantilever double abutment (n = 30). The main groups were further divided into two subgroups based on the retainer design such as Rochette and Maryland. The different prosthesis designs were cemented to the prepared teeth. Later, abutment preparations were made on all specimens keeping the preparation as minimally invasive and esthetic oriented. Impression of the preparations were made using polyvinyl siloxane impression material, followed by pouring cast using die stone. A U-shaped handle of 1.5 mm diameter sprue wax with a 3 mm hole in between was attached to the occlusal surface of each pattern. The wax patterns were sprued and cast in a cobalt–chromium alloy. The castings were cleaned by sandblasting, followed by finishing and polishing. Lastly, based on the study group, specimens for Rochette bridge were perforated to provide mechanical retention between resin cement and metal, whereas the remaining 15 specimens were sandblasted on the palatal side to provide mechanical retention (Maryland bridge). In order to evaluate the tensile bond strength, the specimens were subjected to tensile forces on a universal testing machine with a uniform crosshead speed. The fixed-fixed partial prosthesis proved superior to both cantilever designs, whereas the single abutment cantilever design showed the lowest tensile bond strength. Maryland bridges uniformly showed higher bond strengths across all framework designs. Within the limitations of this study, the three-unit fixed-fixed design and Maryland bridges had greater bond strengths, implying that they may demonstrate lower clinical failure than cantilever designs and Rochette bridges.

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Section: Introductionmentioning

confidence: 99%

Comparison of Tensile Bond Strength of Fixed-Fixed Versus Cantilever Single- and Double-Abutted Resin-Bonded Bridges Dental Prosthesis

et al. 2022

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“…Gigi tiruan cekat memiliki beberapa bagian penting yaitu pontik, konektor, retainer, dan gigi penyangga. 6 Gigi yang akan dijadikan sebagai gigi penyangga harus dipreparasi agar dapat ditempati retainer serta untuk mendapatkan retensi dan resistensi untuk gigi tiruan tersebut. 7 Retensi dan resistensi tergantung pada beberapa faktor seperti sudut preparasi dinding aksial, tinggi preparasi, geometri, kekasaran permukaan, bahan sementasi serta luas permukaan yang dipreparasi.…”

Section: Pendahuluanunclassified

<p>Perbedaan kekuatan tensil antara koping logam gigi tiruan cekat dengan variasi sudut preparasi dinding aksial</p><p>Differences in the tensile strength between coping metal of fixed denture with variations in axial wall preparation angle</p>

Theresia

Tarigan

2019

JKG

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Sudut dinding aksial adalah sudut yang terbentuk selama preparasi gigi penyangga. Pemilihan sudut preparasi yang tepat merupakan suatu yang hal yang sangat penting karena sudut preparasi yang terlalu kecil dapat menghasilkan daerah undercut (gerong) yang tidak diinginkan dan sudut yang terlalu besar dapat mengakibatkan gigi tiruan yang kurang retentif. Tujuan penelitian ini adalah untuk mengetahui perbedaan kekuatan tensil koping logam gigi tiruan cekat dengan sudut preparasi dinding aksial 3°, 6°, dan 10°. Metode: Jenis penelitian adalah eksperimental murni. Sampel penelitian 27 gigi premolar rahang atas yang ditanam pada resin akrilik swapolimerisasi. Semua gigi dipreparasi hingga sisa tinggi gigi 5 mm dan diameter 4 mm kemudian sudut dinding aksial dibentuk. Data dianalisis dengan menggunakan uji ANOVA satu arah dan post-hoc LSD. Hasil: Terdapat perbedaan signifikan (p < 0,05). Kelompok 1 memiliki kekuatan tensil tertinggi (mean 1,57 ± 0,04 MPa), kelompok 2 (mean 1,23 ± 0,04 MPa), dan kelompok 3 (mean 0,91 ± 0,05 MPa). Simpulan: Perbedaan kekuatan tensil antara koping logam gigi tiruan menurun seiring dengan meningkatnya variasi sudut preparasi dinding aksial. Kata kunci: Sudut dinding aksial, kekuatan tensil, gigi penyangga Differences of the tensile strength between coping metal of fixed denture with axial wall preparation angle variations

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Effects of silkworm fiber position on flexural and compressive properties of silk fiber-reinforced composites

et al. 2018

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Background: Fiber-reinforced composites represent a combination of fiber-reinforced composite materials. The availability of fiber within dentistry in Indonesia is limited and, therefore, requires lengthy advance ordering. The increasing use of fiber derived from natural materials, such as silk, is of greater concern due to its considerable mechanical strength, biocompatibility and wider availability. The application of fiber will increase the mechanical strength of fiber-reinforced composites, including both flexural and compression strength. One factor affecting the mechanical strength of fiber is the laying of fiber or fiber position. Purpose: The purpose of this research is to establish the influence of silkworm fiber position on both the flexural and compression strength of silk fiber-reinforced composites. Methods: Flexural strength and compression strength tests using a universal testing machine involved the division of the research population into three treatment groups: compression side, neutral side and tension side. Results: The results of data analysis indicated that the tension side group possessed the highest flexural strength (121.42 MPa), while the compression side group demonstrated the highest compression strength (337.65 MPa). A one-way ANOVA analysis test produced a significant result of p = 0.000 (<0.05) both for silkworm fiber position effect and compression strength of silk fiber reinforced composites. Conclusion: The position of silkworm fiber will affect its flexural strength as well as that of the compression of silk fiber-reinforced composites.

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Evolutionary Changes in Bridge Designs

Cited by 3 publications

References 13 publications

Comparison of Tensile Bond Strength of Fixed-Fixed Versus Cantilever Single- and Double-Abutted Resin-Bonded Bridges Dental Prosthesis

Comparison of Tensile Bond Strength of Fixed-Fixed Versus Cantilever Single- and Double-Abutted Resin-Bonded Bridges Dental Prosthesis

<p>Perbedaan kekuatan tensil antara koping logam gigi tiruan cekat dengan variasi sudut preparasi dinding aksial</p><p>Differences in the tensile strength between coping metal of fixed denture with variations in axial wall preparation angle</p>

Effects of silkworm fiber position on flexural and compressive properties of silk fiber-reinforced composites

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