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Relevant bibliographies by topics / Mandibular prosthesis

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Academic literature on the topic 'Mandibular prosthesis'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 March 2023

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Journal articles on the topic "Mandibular prosthesis"

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Kalaignan, Parithimar, and Syed Ershad Ahmed. "Impact of mandibular resection guidance prostheses on oral health related quality of life (OHRQoL) - A prospective study." LIAQUAT MEDICAL RESEARCH JOURNAL 3, no. 3 (September 29, 2021): 79–85. http://dx.doi.org/10.38106/lmrj.2021.3.3-06.

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This prospective study was aimed to measure the impact of mandibular resection guidance prostheses on oral health-related quality of life (OHRQol). A total of 35 patients with mandibulectomy defects were included. All the patients were rehabilitated with mandibular resection guidance prostheses respectively. These patients were subjected for assessment of OHRQol. The assessment was done by using OHIP-Edent-19 and a novel scale—maxillofacial prosthesis performance scale (MFPPS). The assessment was done on all the patients at two weeks and three months of prosthesis function. The scores of OHIP-Edent, and MFPPS for mandibular resection guidance prostheses after two weeks were 33.20and 18.74 respectively. The scores of OHIP-Edent and MFPPS for mandibular resection guidance prostheses prostheses at three months were 27.71and 15.20 respectively. These findings show significant improvements of prosthesis in terms of functional, physical, psychological and social parameters after long-term follow-up (3 months).

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B, Annapoorani, and Kasim Mohamed K. "Prosthetic management of a Hemi-mandibulectomy patient with Definitive Removable Prosthesis - A case report." JOURNAL OF CLINICAL PROSTHODONTICS AND IMPLANTOLOGY 3, no. 2 (December 30, 2021): 42–45. http://dx.doi.org/10.55995/j-cpi.2021009.

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The loss of continuity of the lower jaw following surgical excision of tumor results in deviation of remaining mandibular segment toward the resected side. Swallowing, speech, mastication, and mandibular movements are adversely affected by mandibular surgery. Prosthetic rehabilitation plays a major role in these patients, by fabricating the whole array of prostheses to meet specific patient needs. This case report describes about the patient diagnosed with squamous cell carcinoma of alveolus on the left side. The patient had undergone hemimandibulectomy followed by soft tissue reconstruction. As a result, mandible deviated to the affected side with trismus due to scar contraction. Second surgery was planned to remove the scar tissue and to improve mouth opening. Few days following second surgery, guiding flange prosthesis was fabricated to reduce the deviation and to guide the mandible close to occlusion. After three months, a removable cast partial prosthesis was fabricated, for the defect side which was supported by a wing to compensate for lack of underlying structures. It is imperative to provide such patients with guiding flange prosthesis three to four weeks after surgical management to guide mandible to occlusion and minimize the mandibular deviation. Failure to do so will complicate the occlusion. Subsequently patient can be rehabilitated with removable prosthesis to restore the function

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Saleem, Mohammed, Rayeesa Saleem, and Rufus Allwyn Meshack. "Prosthetic Management of Edentulous Mandible using Endosseous Implants and Overdentures." Journal of Contemporary Dental Practice 12, no. 2 (2011): 135–37. http://dx.doi.org/10.5005/jp-journals-10024-1023.

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ABSTRACT The choice of a suitable prosthesis for a specific case is determined to a great extent by the underlying residual bone as well as the mucosa. Also of significance are the expectations and demands of the patient from the prosthesis. The following case report discusses the rehabilitation of a complete edentulous mandibular arch with an implant retained mandibular over denture. Clinical Significance Implant retained fixed or removable prostheses are good treatment options in patients who have a compromised edentulous foundation. How to cite this article Saleem M, Saleem R, Meshack RA, Guru R. Prosthetic Management of Edentulous Mandible using Endosseous Implants and Overdentures. J Contemp Dent Pract 2011;12(2):135-137.

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Bacchiocchi, Danilo, and Andrea Guida. "The Ball Welding Bar: A New Solution for the Immediate Loading of Screw-Retained, Mandibular Fixed Full Arch Prostheses." International Journal of Dentistry 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/2679085.

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Purpose. To present a new intraoral welding technique, which can be used to manufacture screw-retained, mandibular fixed full-arch prostheses. Methods. Over a 4-year period, all patients with complete mandibular edentulism or irreparably compromised mandibular dentition, who will restore the masticatory function with a fixed mandibular prosthesis, were considered for inclusion in this study. The “Ball Welding Bar” (BWB) technique is characterised by smooth prosthetic cylinders, interconnected by means of titanium bars which are adjustable in terms of distance from ball terminals and are inserted in the rotating rings of the cylinders. All the components are welded and self-posing. Results. Forty-two patients (18 males; 24 females; mean age 64.2±6.7 years) were enrolled and 210 fixtures were inserted to support 42 mandibular screw-retained, fixed full-arch prostheses. After two years of loading, 2 fixtures were lost, for an implant survival rate of 97.7%. Five implants suffered from peri-implant mucositis and 3 implants for peri-implantitis. Three of the prostheses (3/42) required repair for fracture (7.1%): the prosthetic success was 92.9%. Conclusions. The BWB technique seems to represent a reliable technique for the fabrication of screw-retained mandibular fixed full-arch prostheses. This study was registered in the ISRCTN register with number ISRCTN71229338.

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Venezia, Pietro, Ferruccio Torsello, Vincenzo Santomauro, Vittorio Dibello, and Raffaele Cavalcanti. "Full Digital Workflow for the Treatment of an Edentulous Patient with Guided Surgery, Immediate Loading and 3D-Printed Hybrid Prosthesis: The BARI Technique 2.0. A Case Report." International Journal of Environmental Research and Public Health 16, no. 24 (December 17, 2019): 5160. http://dx.doi.org/10.3390/ijerph16245160.

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Purpose: To describe a technique intended to transfer of the intermaxillary and occlusal relationships in a fully digital environment from a complete denture to an implant-supported 3D-printed hybrid prosthesis (an acrylic resin complete fixed dental prosthesis supported by implants). Methods: In edentulous cases, the physiological mandibular position should be determined before the immediate loading procedures. In some cases, the use of interim removable prostheses for a few weeks could be useful to test the new occlusion in centric relation and to verify the prosthetic project. When the correct intermaxillary relationships are achieved, it is difficult to transfer them from the provisional to the final prostheses, as impressions or scans of edentulous arches do not have reference points for intermaxillary records. This paper presents a complex case and the technique used to transfer information from a complete denture to an implant-supported prosthesis with a digital workflow. A prosthetic stent has been used to scan the edentulous mandibular arch and to record the intermaxillary relation. Results: The delivery of the hybrid implant-supported prostheses was carried out with no problems and minimal occlusal adjustments. The patient was extremely satisfied with the treatment and the situation remained stable at the 1-year follow up. Conclusions: The approach described in the present article predictably maintains prosthetic information and allows the delivery of a final implant-supported restoration with the same occlusal relationship as the one tested with the provisional diagnostic dentures.

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Mai, Hai Yen, Jae-Min Seo, Jae-Kwang Jung, and Du-Hyeong Lee. "Strategic Use of CAD-CAM Interim Restoration for the Recovery of the Vertical Dimension of Occlusion in the Posterior Partially Edentulous Jaw." Applied Sciences 10, no. 21 (October 31, 2020): 7735. http://dx.doi.org/10.3390/app10217735.

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Occlusal contact loss occasionally occurs following the placement of implant-supported fixed dental prostheses in the posterior region. This complication is caused by the change in the vertical dimension of occlusion after the recovery of mastication. The change is probably related to the prosthesis sinking phenomenon and previous mandibular dislocation. The use of interim prostheses could help re-establish the vertical dimension of occlusion. The definitive prostheses can then be accurately fabricated using digital techniques in the newly established vertical dimension. In this case report, we introduce a protocol incorporating a computer-aided design and computer-aided manufacturing (CAD-CAM) interim prosthesis and digital techniques to minimize the occurrence of unexpected initial occlusal changes in the prosthetic treatment of implant-supported prostheses in the posterior region.

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Lazic, Vojkan, and Igor Djordjevic. "Prosthetic therapy of the lateral facial defect." Serbian Dental Journal 59, no. 3 (2012): 164–68. http://dx.doi.org/10.2298/sgs1203164l.

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Introduction. Facial defects may arise as a result of head and neck trauma or facial tumor ablation. Minor defects can be reconstructed surgically while large defects usually need combined surgical and prosthetic reconstruction. The aim of this study was to present the prosthetic reconstruction of the lateral facial defect using facial colored acrylic prosthesis. Case Report. A male patient with a maxillary defect on the left side and a large lateral facial defect on the same side received an obturator prosthesis as well as a facial colored acrylic prosthesis (facial-orbit) retained by the glasses frame. Satisfied aesthetics was accomplished. However, the stability of the prostheses during mandibular movements could not be achieved which resulted in saliva leakage over the lips. Conclusion. Better functional and aesthetic outcome could be achieved by combined surgical and prosthetic treatment of such large facial defect.

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Probst, Livia Fernandes, Tazio Vanni, Denise De Fátima Barros Cavalcante, Erica Tatiane da Silva, Yuri Wanderley Cavalcanti, Luis Augusto Passeri, and Antonio Carlos Pereira. "Cost-effectiveness of implant-supported dental prosthesis compared to conventional dental prosthesis." Revista de Saúde Pública 53 (February 7, 2019): 69. http://dx.doi.org/10.11606/s1518-8787.2019053001066.

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OBJECTIVE: To conduct a cost-effectiveness analysis of alternatives for rehabilitation treatment of mandibular edentulism in the context of the Brazilian Unified Health System (implantsupported total dental prosthesis versus conventional total dental prosthesis). METHODS: A Markov model was developed to capture long-term clinical and economic outcomes. The model’s population was comprised of a hypothetical cohort of 1,000,000 patients, aged 55 years, with total mandibular edentulism and without medical contraindications for performing surgical procedures. The adopted analysis perspective was that of the Brazilian Unified Health System. Based on the proposed model, we calculated cost – in BRL, and effectiveness – measured by quality-adjusted prosthesis year (QAPY). The time horizon of the analysis was 20 years. RESULTS: Considering a 5% discount in costs and effects, the incremental cost-effectiveness ratio of implant-supported total dental prostheses compared to conventional total dental prosthesis (BRL 464.22/QAPY) was lower than the willingness to pay threshold adopted in the model (BRL 3,050.00/QAPY). CONCLUSIONS: The results of this economic analysis showed that the rehabilitation of mandibular edentulous patients by implant-supported total prosthesis is very cost-effective when compared to conventional complete prosthesis, considering the cost-effectiveness limits employed.

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Bonnet, Anne Sophie, Marwan Daas, Michel Postaire, and Paul Lipiński. "Numerical Simulations of the Global Behaviour of Implant Supported or Retained Dental Prostheses." Materials Science Forum 638-642 (January 2010): 518–23. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.518.

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In spite of the recent efforts concerning prevention and treatment of dental diseases, total edentulism remains an important world health problem, even in industrialized countries. Different solutions to mandibular total edentulism are available from the classical removable denture to the implant supported prostheses. The aim of the present work is to compare, through finite element simulations, two distinct types of prosthetic solutions. The first one is an implant-supported prosthesis (ISP) using a “All-On-Four” base and the second one is a mandibular implant-retained overdenture (IRO) using two implants. A foodstuff situated on molar is modelled to simulate the mastication force. An orthotropic behaviour is assumed inside the symphyseal area. The results of the simulations show a strong influence of the prosthetic solution type on the stress and strain repartition in the implant and peri-implant bone. This can be explained by the difference of load transfer to bone between those two configurations. Indeed, in the implant-supported prosthesis, the totality of the mastication force is directly transmitted to peri-implant bone whereas the implant-retained solution benefits from a large participation of mucosa to the global load transfer from overdenture to bone.

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Niedzielska, Iwona, Michał Bąk, Damian Niedzielski, Hubert Okła, Jadwiga Gabor, Arkadiusz Stanula, Jarosław Paluch, and Andrzej Szymon Swinarew. "Temporomandibular Joint Prostheses: Optimal Materials for the Optimal Stomatognathic System Performance—Preliminary Study." Journal of Functional Biomaterials 12, no. 1 (January 26, 2021): 7. http://dx.doi.org/10.3390/jfb12010007.

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The aim of this study was to quantitatively evaluate alloplastic Temporomandibular Joint (TMJ) Prostheses against other treatment modalities regarding the jaw kinematics. Six patients with Temporomandibular Joint Prostheses, four with mandibular ramus Patient-Specific Implant (PSI) with condylar head preservation, and four after mandibular condylectomy were evaluated by the means of axiography (Cadiax Compact 2), which is the noninvasive three-dimensional study of condylar movements. The patients were also evaluated clinically for the mandibular movements. The study revealed that the significant movement limitations occurred bilaterally in patients fitted with TMJ prosthesis. For the protrusion movement, the vector length of the movement (L) for the TMJ prosthesis was 0.31 vs. 3.01 mm for the PSI (Kruskal–Wallis chi-squared = 9.1667, df = 2, p-value = 0.01022, post hoc Dunn p-value = 0.015) and for the laterotrusion to the operated side, the length of the vector (L) was 0.66 vs. 3.35 mm, respectively. Statistically significant differences between groups were most frequent for the laterotrusion to the unoperated side. The study shows that a further development on TMJ Prostheses geometry and materials is needed.

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Dissertations / Theses on the topic "Mandibular prosthesis"

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Carver, Keith Charles. "The in vivo antibacterial efficacy of ultrasound after hand and rotary instrumentation in human mandibular molars." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1186689182.

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Arvier, J. F. "Biocompatability of the Bosker Transmandibular Implant : components of the system in a short-term animal trial /." Title page, contents and precis only, 1987. http://web4.library.adelaide.edu.au/theses/09DM/09dma795.pdf.

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Gregolin, Rafael Ferreira [UNESP]. "Desenvolvimento, comportamento mecânico e microestrutural de uma prótese mandibular em liga de titânio produzida por sinterização direta a laser de metal (DMLS)." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/94477.

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Made available in DSpace on 2014-06-11T19:27:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-03-20Bitstream added on 2014-06-13T20:35:19Z : No. of bitstreams: 1 gregolin_rf_me_ilha.pdf: 3746269 bytes, checksum: b2a1686375b3a28a8709c13b5b75a4bd (MD5)<br>A prototipagem rápida está sendo utilizada em diversas áreas do conhecimento humano para auxiliar no estudo e muitas vezes na própria fabricação do componente usual. Atualmente, com o avanço de softwares, pode-se criar com facilidade imagens tridimensionais, ou mesmo, capturar essas imagens de equipamentos como a tomografia computadorizada e a ressonância magnética. Consegue-se reproduzir qualquer parte do corpo humano com grande perfeição e isso é utilizado na fabricação de implantes, scaffolds (arcabouços – engenharia de tecidos), materiais de auxílio e preparação em cirurgias (biomodelos). Os principais materiais utilizados na fabricação de implantes hoje são: o titânio puro, as ligas de titânio, o aço inoxidável, o polietileno, o PMMA, as ligas de cobalto-cromo e as cerâmicas. Este trabalho se propõe a fazer: um estudo mecânico e microestrutural da liga Ti-6Al-4V obtida por prototipagem rápida no processo de sinterização direta a laser de metais (DMLS) e compará-la com a liga Ti-6Al-4V produzida por processos convencionais de conformação (trefilação). Além disso, pretende realizar o desenvolvimento de uma placa condilar personalizada utilizada para patologias de distúrbios de ATM (articulação têmporo-mandibular), avaliando sua geometria pelo software ANSYS®, com o apoio da tomografia computadoriza e do software de construção de imagens tridimensionais INVESALIUS®<br>Rapid prototyping is being used in various areas of human knowledge to assist in the study and often in the usual component manufacturing. Today, with the advancement of software, you can easily create three-dimensional images, or even, capture these images of equipment such as computed tomography and magnetic resonance imaging. You able to reproduce any part of the human body with great perfection and it’s used in the manufacture of implants, scaffolds (tissue engineering), material aid and preparation for surgery (biomodels). The main materials used in the manufacture of implants today are: pure titanium, titanium alloys, stainless steel, polyethylene, PMMA, the cobalt-chromium alloys and ceramics. This paper proposes to do: mechanical and microstructural studies of alloy Ti-6Al-4V obtained by rapid prototyping process in direct metal laser sintering (DMLS) and compare it with the Ti-6Al-4V alloy produced by conventional forming process (wiredrawing). Also, make the development of a custom condylar plate used for diseases of TMJ (temporomandibular joint) disorders, assessing its geometry by ANSYS® software with the help of computerized tomography and the software to build three-dimensional images INVESALIUS®

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Gregolin, Rafael Ferreira. "Desenvolvimento, comportamento mecânico e microestrutural de uma prótese mandibular em liga de titânio produzida por sinterização direta a laser de metal (DMLS) /." Ilha Solteira, 2013. http://hdl.handle.net/11449/94477.

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Orientador: Ruis Camargo Tokimatsu<br>Banca: João Antonio Pereira<br>Banca: Cecilia Amelia de Carvalho Zavaglia<br>Resumo: A prototipagem rápida está sendo utilizada em diversas áreas do conhecimento humano para auxiliar no estudo e muitas vezes na própria fabricação do componente usual. Atualmente, com o avanço de softwares, pode-se criar com facilidade imagens tridimensionais, ou mesmo, capturar essas imagens de equipamentos como a tomografia computadorizada e a ressonância magnética. Consegue-se reproduzir qualquer parte do corpo humano com grande perfeição e isso é utilizado na fabricação de implantes, scaffolds (arcabouços - engenharia de tecidos), materiais de auxílio e preparação em cirurgias (biomodelos). Os principais materiais utilizados na fabricação de implantes hoje são: o titânio puro, as ligas de titânio, o aço inoxidável, o polietileno, o PMMA, as ligas de cobalto-cromo e as cerâmicas. Este trabalho se propõe a fazer: um estudo mecânico e microestrutural da liga Ti-6Al-4V obtida por prototipagem rápida no processo de sinterização direta a laser de metais (DMLS) e compará-la com a liga Ti-6Al-4V produzida por processos convencionais de conformação (trefilação). Além disso, pretende realizar o desenvolvimento de uma placa condilar personalizada utilizada para patologias de distúrbios de ATM (articulação têmporo-mandibular), avaliando sua geometria pelo software ANSYS®, com o apoio da tomografia computadoriza e do software de construção de imagens tridimensionais INVESALIUS®<br>Abstract: Rapid prototyping is being used in various areas of human knowledge to assist in the study and often in the usual component manufacturing. Today, with the advancement of software, you can easily create three-dimensional images, or even, capture these images of equipment such as computed tomography and magnetic resonance imaging. You able to reproduce any part of the human body with great perfection and it's used in the manufacture of implants, scaffolds (tissue engineering), material aid and preparation for surgery (biomodels). The main materials used in the manufacture of implants today are: pure titanium, titanium alloys, stainless steel, polyethylene, PMMA, the cobalt-chromium alloys and ceramics. This paper proposes to do: mechanical and microstructural studies of alloy Ti-6Al-4V obtained by rapid prototyping process in direct metal laser sintering (DMLS) and compare it with the Ti-6Al-4V alloy produced by conventional forming process (wiredrawing). Also, make the development of a custom condylar plate used for diseases of TMJ (temporomandibular joint) disorders, assessing its geometry by ANSYS® software with the help of computerized tomography and the software to build three-dimensional images INVESALIUS®<br>Mestre

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Medeiros, Rodrigo Antonio de [UNESP]. "Análise da distribuição das tensões em próteses protocolo mandibulares com estruturas fresadas por CAD/CAM e confeccionadas pela técnica convencional: análise pela fotoelasticidade e extensometria." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/148570.

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Submitted by RODRIGO ANTÔNIO DE MEDEIROS null (rodrigomedeiros88@hotmail.com) on 2017-01-17T18:59:53Z No. of bitstreams: 1 Tese_Rodrigo Medeiros.docx: 4055404 bytes, checksum: 8420d48d6379115c0945c7b9f391bbc6 (MD5)<br>Rejected by LUIZA DE MENEZES ROMANETTO (luizamenezes@reitoria.unesp.br), reason: Solicitamos que realize uma nova submissão seguindo as orientações abaixo: Incluir o número do processo de financiamento nos agradecimentos da dissertação/tese. A versão final da dissertação/tese deve ser submetida no formato PDF (Portable Document Format). O arquivo PDF não deve estar protegido e a dissertação/tese deve estar em um único arquivo, inclusive os apêndices e anexos, se houver. Por favor, estas informações e realize uma nova submissão. Agradecemos a compreensão. on 2017-01-20T15:26:30Z (GMT)<br>Submitted by RODRIGO ANTÔNIO DE MEDEIROS null (rodrigomedeiros88@hotmail.com) on 2017-01-20T21:34:08Z No. of bitstreams: 1 Tese_Rodrigo Medeiros.pdf: 2572700 bytes, checksum: 14ceeb89edad876baa95811c229c59dd (MD5)<br>Approved for entry into archive by LUIZA DE MENEZES ROMANETTO (luizamenezes@reitoria.unesp.br) on 2017-01-23T19:00:09Z (GMT) No. of bitstreams: 1 medeiros_ra_dr_araca.pdf: 2572700 bytes, checksum: 14ceeb89edad876baa95811c229c59dd (MD5)<br>Made available in DSpace on 2017-01-23T19:00:09Z (GMT). No. of bitstreams: 1 medeiros_ra_dr_araca.pdf: 2572700 bytes, checksum: 14ceeb89edad876baa95811c229c59dd (MD5) Previous issue date: 2016-12-12<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>O objetivo desse estudo foi avaliar a distribuição de tensão, por meio dos métodos fotoelástico e extensometria, em próteses protocolo mandibulares (tipo Branemärk) com infraestruturas confeccionadas com diferentes materiais e técnicas, sob força de compressão. Foi confeccionado um modelo fotoelástico de uma mandíbula edêntula que recebeu cinco implantes 4x11 mm hexágono externo entre os forames mentonianos. Os grupos foram divididos em: Grupo I - infraestrutura fundida em níquel-cromo com revestimento oclusal em resina acrílica (n=7); Grupo II - infraestrutura fundida em níquel-cromo com revestimento oclusal em cerâmica (n=7); Grupo III - infraestrutura fresada em Zircônia estabilizada por óxido de ítrio com revestimento em cerâmica (n=7). Inicialmente, foi realizado o teste da fotoelasticidade e, posteriormente, a extensometria. Pela metodologia da fotoelasticidade, com auxílio de uma máquina de ensaio universal (EMIC) foram aplicadas cargas axiais de 70 N na região do implante mais anterior, entre os incisivos, e no centro do primeiro molar de cada lado. Por meio de imagens fotográficas e com o auxílio do programa Adobe Photoshop CS6, as imagens foram analisadas de acordo com o número de franjas de alta intensidade nos grupos testados. Para a metodologia da extensometria, as cargas foram aplicadas da mesma maneira da metodologia da fotoelasticidade e a medição das tensões foi realizada em duas regiões distintas. Para a primeira região, dois extensômetros elétricos de resistência foram posicionados horizontalmente na região mesial e distal dos cinco implantes, diretamente sobre a crista marginal do modelo fotoelástico. Para a segunda região, a resina fotoelástica foi removida da superfície vestibular e lingual de cada implante, sendo mantida1 mm de resina intacta, onde os extensômetros foram fixados verticalmente. Foram realizados os mesmos testes de compressão descritos anteriormente. Os valores de tensão registrados foram agrupados em tabelas e submetidas à análise de variância (ANOVA) dois fatores e ao teste de Tukey com significância de 5%. Os resultados das duas metodologias demonstraram menores valores de tensão para o Grupo I, quando comparado aos demais grupos. É possível concluir que as próteses protocolo com infraestrutura fundida em metal e revestimento oclusal acrílico demonstraram melhores resultados biomecânicos.<br>This study aimed to evaluate the stress distribution in full-arch fixed mandibular prosthesis (Branemärk type) with infrastructure made of different materials and techniques, and under compressive force, through photoelastic and strain gauge analysis. A photoelastic cast of an edentulous jaw was fabricated and received five external hexagon implants (4x11mm) between the mental foramen. The groups were divided into: Group I - Nickel-Chrome fused infrastructure with acrylic resin occlusal coating; Group II - Nickel-Chrome fused infrastructure with ceramic occlusal coating; Group III - Yttria-stabilized zirconia fused infrastructure with ceramic coating. First, the photoelastic analysis was performed and later the strain gauge analysis. A force of 70 N was applied by using a testing machine (EMIC) in the region of the most anterior implant, between incisors, and in the center of the first molar on each side. The images were analyzed by a blinded evaluator through images and by using Adobe Photoshop CS6, according to the number of high intensity fringes in each group. Regarding the strain gauge analysis, the stress measure was performed in two distinct regions. For the first region, two resistance strain gauges were placed horizontally in the mesial and distal regions of the five implants, directly on the marginal ridge of the photoelastic cast. For the second region, the photoelastic resin was removed on the buccal and lingual surfaces of each implant, leaving 1 mm of intact resin, where the strain gauges were placed vertically. The same compression tests described above were carried out. Data were submitted to two-way ANOVA and to the Tukey post-hoc test with 5% level of significance. The results of both methods showed lower stress values for Group I, when compared to other groups. It can be concluded that when rigid materials are used for infrastructure fabrication, the esthetic coating influences the load generated on the marginal bone around the implant. The ceramic coating showed less satisfactory results.<br>FAPESP: 2014/14088-0<br>FAPESP: 2014/11605-3

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Esfandiari, Shahrokh. "Oral health technology assessment : study of mandibular 2-implant overdentures." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=115892.

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There is little evidence that Health Technology Assessment (HTA) is much used in dentistry. Dental implant technology is an example of innovative oral health technology. The objectives of this research were to gather the evidence needed for the assessment of overdenture implant treatment so that both patients and dental practitioners can make informed decisions about this technology. These objectives included 1) investigating what types of dental clinicians adopt and provide dental implants 2) determining the effect of the clinicians' experience in the provision of implant supported prostheses and 3) measuring the patients' preference in provision of mandibular 2-implants overdenture technology.<br>For the first part, a cross-sectional survey was sent to all licensed Canadian Dentists to measure the adoption and provision of implant technology. For the second part, we used the data on the first 140 edentulous elders who were enrolled in a randomized controlled clinical trial to compare the effects of mandibular conventional (CD) and 2-implant overdentures (IOD) on nutrition. The change in patient ratings of satisfaction after treatment, laboratory costs and the number of unscheduled visits were compared. For the last part, edentulous elders (N=36) who were wearing maxillary dentures and either a mandibular conventional denture (CD, n=13) or a two-implant overdenture (IOD, n=23) participated in this study. Participants' preference was measured during a 20-minute interview.<br>Multivariate regression analysis on the data from the first part of the study shows that the Dentist's gender, province of practice, specialty, and whether they practice alone or in association with other practitioners, are significantly associated with the adoption of implant technology (p<0.05). It is also shown that there was no difference in satisfaction scores for either prosthesis between the groups treated by experienced specialists or new dentists. Furthermore, it is shown that IOD wearers were willing to pay three times more than the current cost of conventional dentures for implant prostheses (p<0.05).<br>Overall, the results of this study 1) inform decision makers on what types of clinicians provide implant technology and 2) suggest that, with minimal training, all dental clinicians irrespective of their specialty, can provide successful implant overdenture prostheses that edentulous patients are willing to pay for.

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Müller, Rainer, Andreas Höhlein, Annette Wolf, Jutta Markwardt, Matthias C. Schulz, Ursula Range, and Bernd Reitemeier. "Evaluation of Selected Speech Parameters after Prosthesis Supply in Patients with Maxillary or Mandibular Defects." Karger, 2013. https://tud.qucosa.de/id/qucosa%3A71635.

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Background: Ablative surgery of oropharyngeal tumors frequently leads to defects in the speech organs, resulting in impairment of speech up to the point of unintelligibility. The aim of the present study was the assessment of selected parameters of speech with and without resection prostheses. Patients and Methods: The speech sounds of 22 patients suffering from maxillary and mandibular defects were recorded using a digital audio tape (DAT) recorder with and without resection prostheses. Evaluation of the resonance and the production of the sounds /s/, /sch/, and /ch/ was performed by 2 experienced speech therapists. Additionally, the patients completed a non-standardized questionnaire containing a linguistic self-assessment. Results: After prosthesis supply, the number of patients with rhinophonia aperta decreased from 7 to 2 while the number of patients with intelligible speech increased from 2 to 20. Correct production of the sounds /s/, /sch/, and /ch/ increased from 2 to 13 patients. A significant improvement of the evaluated parameters could be observed only in patients with maxillary defects. The linguistic self-assessment showed a higher satisfaction in patients with maxillary defects. Conclusion: In patients with maxillary defects due to ablative tumor surgery, an increase in speech performance and intelligibility is possible by supplying resection prostheses.

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Pizzol, Karina Eiras Dela Coleta. "Alterações do tecido mole, espaço faríngeo e estabilidade após avanço maxilo-mandibular xom rotação anti-horária e prótese total de ATM /." Araraquara : [s.n.], 2008. http://hdl.handle.net/11449/104485.

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Orientador: João Roberto Gonçalves<br>Banca: Ary dos Santos-Pinto<br>Banca: Roberto Henrique Barbeiro<br>Banca: Darceny Zanetta Barbosa<br>Banca: Terumi Okada<br>Resumo: Este estudo avaliou a resposta do tecido mole, do espaço faríngeo e a estabilidade após avanço maxilo-mandibular com rotação anti-horária e reconstrução da ATM com próteses totais articulares do tipo TMJ Concepts system®. As mudanças cirúrgicas e pós-cirúrgicas foram analisadas utilizando-se telerradiografias laterais. Com o movimento cirúrgico, houve redução do ângulo do plano oclusal (14,9 ± 8,0°) e aumento do espaço aéreo faríngeo - PASnar (4,9mm). A região anterior da maxila moveu-se para a frente e para cima enquanto a porção posterior, para a frente e para baixo. A mandíbula avançou, e sofreu rotação no sentido anti-horário. No período pós-cirúrgico, a maxila apresentou alterações mínimas no plano horizontal, enquanto todas as medidas mandibulares permaneceram estáveis. A postura da cabeça (OPT/NS) mostrou flexão imediatamente após a cirurgia e extensão em longo prazo, enquanto a curvatura cervical (OPT/CVT) não apresentou mudanças. Os resultados cirúrgicos mostraram ainda aumento das distâncias entre a terceira vértebra cervical (C3) e o mento e desta com o hióide, permanecendo estáveis durante o período de observação. A distância entre o osso hióide e o plano mandibular reduziu durante e após a cirurgia. Já a resposta do tecido mole evidenciou diferentes razões entre tecido duro/mole nos pacientes com e sem genioplastia. As mudanças horizontais na morfologia do lábio superior após avanço, impacção da maxila, sutura em VY e sutura da base alar mostraram maior movimento do que as mudanças observadas em tecido duro. O avanço maxilo-mandibular com rotação anti-horária do plano oclusal associado a próteses totais de ATM (TMJ Concepts system®) mostrou-se estável durante o período de observação. O espaço aéreo faríngeo aumentou... (Resumo completo, clicar acesso eletrônico abaixo)<br>Abstract: This study evaluated stability, soft tissue response and oropharyngeal airway space changes after maxillo-mandibular advancement and counter-clockwise rotation with TMJ reconstruction using TMJ Concepts system® total joint prostheses. Lateral cephalograms were analyzed to estimate surgical and post surgical changes. During surgery, the occlusal plane angle decreased 14.9 ± 8.0° and the retroglossal airway space (PASnar) increased 4.9mm. The anterior region of maxilla moved forward and upward while the posterior nasal spine moved downward and forward. The mandible changed forward and rotated in a counter-clockwise direction. At long-term follow-up evaluation the maxilla showed minor horizontal changes, while all mandibular measurements remained stable. Head posture (OPT/NS) showed flexure immediately after surgery and extension long-term post surgery, while cervical curvature (OPT/CVT) had no significant changes. Surgery increased the distances between the third cervical vertebrae (C3) and menton, and C3 and hyoid, remaining stable afterwards. The distance from the hyoid to the mandibular plane decreased during surgery and in the longest follow-up. Soft tissue response indicated different hard/soft tissue ratios between patients with or without genioplasties. Horizontal changes in upper lip morphology after maxillary advancement/impaction, VY closure, and alar base cinch sutures showed greater movement, than observed in hard tissue. TMJ Concepts total joint prostheses associated with maxillo-mandibular advancement and counter-clockwise rotation showed to be stable during the follow-up observation period. Immediate increase in oropharyngeal airway dimension, was influenced by post-surgical changes in head posture but remained stable over the follow-up period. Soft tissue changes showed a known predictable response.<br>Doutor

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Pizzol, Karina Eiras Dela Coleta [UNESP]. "Alterações do tecido mole, espaço faríngeo e estabilidade após avanço maxilo-mandibular xom rotação anti-horária e prótese total de ATM." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/104485.

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Made available in DSpace on 2014-06-11T19:33:22Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-09-23Bitstream added on 2014-06-13T19:23:12Z : No. of bitstreams: 1 pizzol_kec_dr_arafo.pdf: 688008 bytes, checksum: 35e9164526c1e0e9be53fc6134f7ea9a (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Este estudo avaliou a resposta do tecido mole, do espaço faríngeo e a estabilidade após avanço maxilo-mandibular com rotação anti-horária e reconstrução da ATM com próteses totais articulares do tipo TMJ Concepts system®. As mudanças cirúrgicas e pós-cirúrgicas foram analisadas utilizando-se telerradiografias laterais. Com o movimento cirúrgico, houve redução do ângulo do plano oclusal (14,9 ± 8,0°) e aumento do espaço aéreo faríngeo - PASnar (4,9mm). A região anterior da maxila moveu-se para a frente e para cima enquanto a porção posterior, para a frente e para baixo. A mandíbula avançou, e sofreu rotação no sentido anti-horário. No período pós-cirúrgico, a maxila apresentou alterações mínimas no plano horizontal, enquanto todas as medidas mandibulares permaneceram estáveis. A postura da cabeça (OPT/NS) mostrou flexão imediatamente após a cirurgia e extensão em longo prazo, enquanto a curvatura cervical (OPT/CVT) não apresentou mudanças. Os resultados cirúrgicos mostraram ainda aumento das distâncias entre a terceira vértebra cervical (C3) e o mento e desta com o hióide, permanecendo estáveis durante o período de observação. A distância entre o osso hióide e o plano mandibular reduziu durante e após a cirurgia. Já a resposta do tecido mole evidenciou diferentes razões entre tecido duro/mole nos pacientes com e sem genioplastia. As mudanças horizontais na morfologia do lábio superior após avanço, impacção da maxila, sutura em VY e sutura da base alar mostraram maior movimento do que as mudanças observadas em tecido duro. O avanço maxilo-mandibular com rotação anti-horária do plano oclusal associado a próteses totais de ATM (TMJ Concepts system®) mostrou-se estável durante o período de observação. O espaço aéreo faríngeo aumentou...<br>This study evaluated stability, soft tissue response and oropharyngeal airway space changes after maxillo-mandibular advancement and counter-clockwise rotation with TMJ reconstruction using TMJ Concepts system® total joint prostheses. Lateral cephalograms were analyzed to estimate surgical and post surgical changes. During surgery, the occlusal plane angle decreased 14.9 ± 8.0° and the retroglossal airway space (PASnar) increased 4.9mm. The anterior region of maxilla moved forward and upward while the posterior nasal spine moved downward and forward. The mandible changed forward and rotated in a counter-clockwise direction. At long-term follow-up evaluation the maxilla showed minor horizontal changes, while all mandibular measurements remained stable. Head posture (OPT/NS) showed flexure immediately after surgery and extension long-term post surgery, while cervical curvature (OPT/CVT) had no significant changes. Surgery increased the distances between the third cervical vertebrae (C3) and menton, and C3 and hyoid, remaining stable afterwards. The distance from the hyoid to the mandibular plane decreased during surgery and in the longest follow-up. Soft tissue response indicated different hard/soft tissue ratios between patients with or without genioplasties. Horizontal changes in upper lip morphology after maxillary advancement/impaction, VY closure, and alar base cinch sutures showed greater movement, than observed in hard tissue. TMJ Concepts total joint prostheses associated with maxillo-mandibular advancement and counter-clockwise rotation showed to be stable during the follow-up observation period. Immediate increase in oropharyngeal airway dimension, was influenced by post-surgical changes in head posture but remained stable over the follow-up period. Soft tissue changes showed a known predictable response.

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Reitemeier, Bernd, Michael Unger, Gert Richter, Barbara Ender, Ursula Range, and Jutta Markwardt. "Clinical Test of Masticatory Efficacy in Patients with Maxillary/Mandibular Defects Due to Tumors." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-134891.

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Background: The goal of the study was to evaluate the masticatory efficacy in patients who had been provided with resection prostheses after tumor removal in the maxillary/ mandibular region. These patients complained of impairment of masticatory function. Patients and Methods: 3 groups of patients were compared under clinical-experimental conditions. A uniform chewing material was masticated by the participants under standardized conditions. A sieving procedure was used to evaluate the masticatory efficacy. Analysis of the particle sizes and particle masses obtained was performed with the aid of computers. Results: The results showed that the masticatory efficacy of the patients with resection prostheses was the lowest of the 3 groups compared. The number of existing supporting zones and the location of the defect were found to be important influencing factors. Recording of the dietary habits of all patients was performed using a standardized dietary questionnaire. These data were analyzed using the corresponding software of the German Nutrition Society. With regard to the patients with resection prostheses, it was revealed that they often switched to food that did not require mastication. Conclusions: A nutritional guideline for patients with resection prostheses was developed, which is available for downloading free of charge on the Internet<br>Hintergrund: Ziel der Untersuchung war die Prüfung der Kaueffektivität bei Patienten, die mit Resektionsprothesen nach Tumorentfernung im Kieferbereich versorgt worden waren. Diese Patienten klagten über eine Einschränkung der mastikatorischen Funktion. Patienten und Methoden: Unter klinisch xperimentellen Bedingungen erfolgte der Vergleich von 3 Patientengruppen. Unter standardisierten Bedingungen zerkleinerten die Patienten einheitliches Kaugut. Zur Bewertung der Kaueffektivität wurde ein Siebverfahren eingesetzt. Die Auswertung der ermittelten Partikelgrößen und Partikelmassen erfolgte computergestützt. Ergebnisse: Die Ergebnisse zeigten, dass im Vergleich der 3 Gruppen die Kaueffektivität der Patienten mit Resektionsprothesen am geringsten war. Die Zahl der vorhandenen Stützzonen des Restgebisses und die Defektlokalisation wurden als bedeutsame Einflussfaktoren ermittelt. Die Erfassung der Ernährungsgewohnheiten aller Patienten erfolgte mittels eines standardisierten Ernährungsfragebogens. Diese Daten wurden mit der zugehörigen Software der Deutschen Gesellschaft für Ernährung ausgewertet. Bei den Patienten mit Resektionsprothesen zeigte sich, dass diese auf Nahrungsmittel ausweichen, die kein Kauen erfordern. Schlussfolgerungen: Es wurde eine Ernährungsrichtlinie für Patienten mit Resektionsprothesen abgeleitet, die zum kostenfreien Herunterladen im Internet zur Verfügung steht<br>Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich

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Books on the topic "Mandibular prosthesis"

1

Functional reconstruction of the mandible: Experimental foundations and clinical experience. Berlin: Springer-Verlag, 1987.

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Emami, Elham, and Jocelyne Feine, eds. Mandibular Implant Prostheses. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71181-2.

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Mandibular Implant Prostheses: Guidelines for Edentulous Geriatric Populations. Springer, 2018.

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Emami, Elham, and Jocelyne Feine. Mandibular Implant Prostheses: Guidelines for Edentulous Geriatric Populations. Springer, 2018.

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Attard, Nikolai John. On treatment outcomes of implant-supported mandibular prostheses in edentulous patients. 2004.

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Attard, Nikolai John. On treatment outcomes of implant-supported mandibular prostheses in edentulous patients. 2004, 2004.

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Esthetic Approach To Metal Ceramic Restoration For The Mandibular Anterior Region. QUINTESSENCE, 1990.

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Book chapters on the topic "Mandibular prosthesis"

1

Beltrán-Fernández, Juan Alfonso, Iliana Picco-Díaz, Itzel Bantle-Chávez, Carolina Alvarado-Moreno, Luis Héctor Hernández-Gómez, Juan Luis Cuevas-Andrade, Mauricio González-Rebattú, Adolfo López-Lievano, Juan Alejandro Flores-Campos, and Pablo Moreno-Garibaldi. "Design and Characterization of a Mandibular Prosthesis Prototype by Hemimandibulectomy." In Engineering Design Applications, 313–43. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-79005-3_22.

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Ashtiani, M. N., and R. Imani. "Transient Heat Transfer in a Dental Prosthesis Implanted in Mandibular Bone." In IFMBE Proceedings, 376–79. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14998-6_96.

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Beltrán-Fernández, Juan Alfonso, Eduardo Romo-Escalante, Francisco López-Saucedo, Pablo Moreno-Garibaldi, Luis Héctor Hernández-Gómez, Guillermo Urriolagoitia-Calderón, and Nayeli Camacho-Tapia. "Biomechanical Assembled Prosthesis of a Temporo Mandibular Joint Disorder Using Biocompatible Materials." In Advanced Structured Materials, 135–46. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07383-5_11.

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Nader, Samer Abi, and Samer Mesmar. "Fundamental Surgical and Prosthetic Principles of Mandibular Implant Assisted Prostheses." In Mandibular Implant Prostheses, 187–200. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71181-2_11.

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Cooper, Lyndon F. "Edentulism and the Demise of Dentures: Facts and Fallacies." In Mandibular Implant Prostheses, 3–10. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71181-2_1.

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Menassa, Mélanie, and Thomas T. Nguyen. "Loading Strategies." In Mandibular Implant Prostheses, 175–84. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71181-2_10.

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Nader, Samer Abi, and Samer Mesmar. "Case Presentation: Implant Retained Mandibular Prostheses." In Mandibular Implant Prostheses, 201–19. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71181-2_12.

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Nader, Samer Abi, and Meng François Seng. "Case Presentation: Implant-Supported Removable Mandibular Prostheses." In Mandibular Implant Prostheses, 221–34. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71181-2_13.

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Nader, Samer Abi, and Samer Mesmar. "Case Presentation: Implant-Supported Fixed Mandibular Prostheses." In Mandibular Implant Prostheses, 235–47. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71181-2_14.

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Pesun, Igor J. "Occlusal Consideration for Mandibular Implant Overdentures." In Mandibular Implant Prostheses, 249–60. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71181-2_15.

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Conference papers on the topic "Mandibular prosthesis"

1

Ionescu, Adriangabriel, and Neculai eugen Seghedin. "COMPUTER APPLICATION FOR CREATING MAXILLO-FACIAL PROSTHESES FOR CHILDREN." In eLSE 2018. Carol I National Defence University Publishing House, 2018. http://dx.doi.org/10.12753/2066-026x-18-205.

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Maxillofacial prosthetics in the case of growing children has experienced different approaches over time, taking into consideration the complexity and the relative unpredictability of the mandible's bone growth. At present, the quantification of the mandibular growth is done by using direct measurements of the 3D model generated by the computed tomography, together with the possibility of highlighting the different growth rates between genders. The surgeries are based on two approaches: the autogenous grafts collected from the rib, which have an unpredictable growth rate or, in more severe cases, the implantation of a total temporomandibular joint prosthesis. The last one mentioned requires numerous adjustments throughout the patient's life, because of the mandibular growth. The purpose of this paper is to present a complete temporomandibular joint prosthesis, provided with a capsule which contains a distractor mechanism that can be adjusted with minimal invasiveness at certain periods of time during the child's growth, without the need of complex surgery. Proximal, both the components of the mandibular part and the fossa follow the anatomical shape of the implantation surroundings and are provided with holes for monocortical screws fixation. The fossa component allow the replication to some extent of anatomical and functional route, crossed by the condylar head during the maximum mouth opening while the movement inside the distractor component is based on a rack-and-pinion assembly, commanded by the pinion rotation (screwing) which ensure a good access and adjustment of the mechanism from outside the body. This mechanism is encapsulated in a biocompatible material and attached through fixation to the upper surface of the mandibular base component, the surface which is generated by the condilectomy plane. Thus, this paper describes a method of conceiving, designing, building and manufacturing of such a total prosthesis with a distractor. The computer route begins with data acquisition, 3D model reconstruction from DICOM files generated by the computer-tomography scan, processing, editing, and filtering by "Remesh" operations, artifact removal and export to STL format of the anatomical model. The design process of prosthetic structures and the establishment for each one their own technological paths is made according to the chosen manufacturing technologies: 3D print, respectively CNC.

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Ilavarasi, P. U., and M. Anburajan. "Design and finite element analysis of mandibular prosthesis." In 2011 3rd International Conference on Electronics Computer Technology (ICECT). IEEE, 2011. http://dx.doi.org/10.1109/icectech.2011.5941765.

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Bosshard, V., J. Masse, and F. Series. "Usefulness of Phrenic Nerve Stimulation Applied during Wakefulness To Predict Treatment Success with Mandibular Advancement Prosthesis in Sleep Apnea Patients." In American Thoracic Society 2009 International Conference, May 15-20, 2009 • San Diego, California. American Thoracic Society, 2009. http://dx.doi.org/10.1164/ajrccm-conference.2009.179.1_meetingabstracts.a3597.

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Elkhadem, A. H., S. A. Fawzy, A. M. Ibrahim, and S. M. Elsayed. "The Effect of Implant Tilting on the Stresses Transmitted to the Implants in Cantilever Mandibular Prosthesis: A Three Dimensional Finite Element Analysis." In 2008 Cairo International Biomedical Engineering Conference (CIBEC). IEEE, 2008. http://dx.doi.org/10.1109/cibec.2008.4786087.

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Hasan, Md Abu. "Effects of Lingualized and Linear Occlusion Schemes on the Stress Distribution of an Implant Retained Overdenture Using Finite Element Analysis." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52265.

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This study compares the effects of lingualized and linear occlusion schemes on the stress distribution of an implant retained mandibular overdenture (IRO) using finite element analysis (FEA). A high fidelity solid model of mandibular overdenture incorporating cusps and fossae of occlusal surface with two anterior implants in the canine regions and residual ridge support in the posterior region of the alveolar bone was modeled in SolidWorks and imported to ANSYS for stress analysis. The load was applied vertically to the central grooves and buccal cusp tips of the premolars and molar teeth for the lingualized and linear occlusion respectively. The loading magnitudes were 200 N on the premolars and 200 N on the molar teeth with multiple contact locations. The results show that the linear occlusion scheme generated higher stress in the implants and the prosthetic bar than the lingualized occlusion. The locations of high stress concentrations were the neck of the implants and the implant-prosthetic bar intersection for both the occlusion schemes. However, in the cortical bone lingualized occlusion loading scheme generated higher stress (max principal stress) than the linear one suggesting possibility of greater bone loss. The results of this study could be used to comprehend the stress distribution in the denture teeth, base, bone-implant interface and surrounding bone for the two occlusion concepts and may be of help to the clinicians in choosing the right scheme for the edentulous patients.

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Hasan, Md Abu, and Panos S. Shiakolas. "3D Finite Element Stress Analysis of an Implant Supported Overdenture Under Bruxism and Lingualized Loading Conditions." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51688.

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Bruxism is a nonfunctional motor activity that is characterized by grinding and clenching of the teeth. It has been postulated that bruxism causes excessive occlusal load on the dental implant and its superstructures leading to biological and biomechanical complications. While many researchers suggest that grinding/clenching causes early implant complications and accelerated bone loss, others indicate that the long term effects are still unclear. The goal of this study is to analyze the effect of bruxism loading condition on the stress distribution of an implant supported overdenture (ISO) using finite element analysis (FEA) and compare the results with one of the most functionally efficient occlusion schemes in the clinical dentistry — lingualized occlusion. A high fidelity solid model of a mandibular denture encompassing lingual and buccal cusps, mesial and distal fossae supported by four implants and a connecting titanium prosthetic bar, resting on alveolar bone were modeled in SolidWorks 2013 following proper clinical guidelines and imported to ANSYS 15.0 for stress analysis. The results of the study demonstrate that the stress distribution in the implant prostheses and surrounding bone is significantly affected due to bruxism as compared to the lingualized loading. While the location of the maximum stress concentration was the same (neck of the posterior implants) for both loading conditions, there was an increase of approximately 115% von-Mises stress for bruxism loading condition as compared to the lingualized occlusion. The maximum principal stress in the cortical bone surpassed the ultimate tensile strength limit of the jaw bone implying possibility of bone resorption in the peri-implant area.

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7

Kashi, Ajay, Amit Roy Chowdhury, and Subrata Saha. "Finite Element Analysis of TMJ Implant." In ASME 2009 4th Frontiers in Biomedical Devices Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/biomed2009-83052.

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The TMJ is a bilateral joint of the jaw that functions as a single entity during normal masticatory activities, speaking, yawning and swallowing. TMJ replacement has been indicated in cases of joint trauma, advanced degenerative disease, tumors, developmental anomalies and ankylosis of the joint following injury. Alloplastic replacement of the TMJ (an artificial replacement in the form of a TMJ condylar implant with a glenoid fossa component that articulates with the undersurface of the skull on the temporal bone) renders the anatomical space devoid of the natural mandibular condyle (Fig. 1). Compared to hip and knee prostheses, TMJ implants have not been studied in detail. The goals of this study were to quantify the stress distribution in a commercially available TMJ implant (TMJ Implants, Inc, CO), bone and implant-bone interface, to compare the stresses and strains with different bone conditions, and to compare the stresses and strains with different implant materials using a finite element software package.

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