Holographic evaluation of the marginal fits of complete crowns loaded at the central fossa

Chen, Terry Y.; Chang, Guan‐Liang; Wu, Shih Hwang

doi:10.1117/12.199877

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…Some researchers chose 500, 1 000, or 3 000 g to conduct their experiment (Chen et al, 1995;Çehreli and Iplikçioglu, 2002;Sevimay et al, 2005). According to these references, dynamic loads of 100, 150, 200, 300, 500, 1 000, 1 500, 2 000, 2 500, 3 000, 3 500, and 4 000 g were exerted on the models in this experiment.…”

Section: Discussionmentioning

confidence: 99%

Effect of proximal contact strength on the three-dimensional displacements of implant-supported cantilever fixed partial dentures under axial loading

Peng

Chen

Wang

et al. 2013

J. Zhejiang Univ. Sci. B

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Abstract:Objective: This study investigated the effect of proximal contact strength on the three-dimensional displacements of cantilever fixed partial denture (CFPD) under vertically concentrated loading with digital laser speckle (DLS) technique. Methods: Fresh mandible of beagle dog was used to establish the implant-supported CFPD for specimen. DLS technique was employed for measuring the three-dimensional displacement of the prosthesis under vertically concentrated loading ranging from 200 to 3 000 g. The effect of the contact tightness on the displacement of CFPD was investigated by means of changing the contact tightness. Results: When an axial concentrated loading was exerted on the pontic of the implant-supported CFPD, the displacement of the CFPD was the greatest. The displacement of the prosthesis decreased with the increase of contact strength. When the contact strength was 0, 0.95, and 3.25 N, the displacement of the buccolingual direction was smaller than that of the mesiodistal direction but greater than that of the occlusogingival direction. When the force on the contact area was 6.50 N, the mesiodistal displacement of the prosthesis was the biggest while the buccolingual displacement was the smallest. Conclusions: The implantsupported CFPD is an effective therapy for fully or partially edentulous patients. The restoration of the contact area and the selection of the appropriate contact strength can reduce the displacement of the CFPD, and get a better stress distribution. The most appropriate force value is 3.25 N in this study.

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Section: Discussionmentioning

confidence: 99%

Effect of proximal contact strength on the three-dimensional displacements of implant-supported cantilever fixed partial dentures under axial loading

Peng

Chen

Wang

et al. 2013

J. Zhejiang Univ. Sci. B

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“…La adaptación marginal de coronas metálicas fue estudiado por Chen, Chang y Wu en 1995 (22). Ellos observaron el efecto de la aplicación de una carga de 25N en la fosa central de cada corona protésica.…”

Section: Prótesis Dentariaunclassified

Interferometría holográfica en odontología. Revisión de literatura

Chorres

Uono

Batista

et al. 2014

Rev Estomatol Herediana.

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Bioética, principios y dilemas éticos en Odontología Bioethics, principles and ethical dilemmas in dentistry Resumen: La bioética surge por la necesidad de responder y tratar de solucionar los grandes conflictos que se presentan en la sociedad. La Bioética es un término moderno que se le atribuye la paternidad a Van Rensselaer Potter (1970) al publicar el artículo "Bioethics, the science of survival", Potter establece la existencia de una estrecha relación entre el mundo de las ciencias de la vida, sus hechos y los valores éti-cos, posteriormente la bioética se relacionó fundamentalmente con la ética médica. Tom L. Beauchamp y James F. Childress publican los "Principios de ética biomédica" el año 1979, siendo considerado un texto clásico en la ética biomédica, en la que se establece cuatro principios bioéticos: la autonomía, no maleficencia, beneficencia y justicia. El análisis y la reflexión bioética son esenciales en el ejercicio profesional del odontólogo, esto permitirá una práctica clínica basado en los valores, que involucrara a todo el personal de salud, orientando las estrategias que permitan afrontar de manera adecuada los dilemas éticos que puedan surgir durante el proceso de atención al paciente. Finalmente, la práctica de odontología requiere de profesionales de un grado más alto en valores.

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“…This method allows the detection of minute movements of the order of nanometers, as well as overall qualitative and quantitative visualization of the trajectory of the tensions generated upon load application. Holographic interferometry has been used to evaluate stress in extracted teeth (4), metallic and ceramic crowns (5,6), dental implants (7), removable dentures (8) and craniofacial displacements caused by external force in orthodontic application (9)(10)(11)(12).…”

Section: Introductionmentioning

confidence: 99%

Holographic interferometry method for assessment of static load stress distribution in dog mandible

Campos¹,

Adachi²,

Chorres³

et al. 2006

Braz. Dent. J.

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This study compared the transmission of tensions in fresh, fixed and macerated dog mandibles in order to clarify the diversity of behavior of bone tissues under dry and moist conditions. Double-exposure holographic interferometry was applied and holograms were obtained from 12 fresh hemi-mandibles under static load (control group), which were randomly assigned to 2 groups: 6 were fixed in 10% formalin and 6 were macerated. The specimens were submitted to the same initial force and their respective holograms were obtained. Analysis of the holograms showed that the fresh specimens transmitted significantly less tension than the fixed and macerated ones (p<0.05), and the tension direction was different. An average two-fold tension increment was observed in the experimental conditions. The holographic interferometry method was efficient in quantifying and qualifying tension transmission. However, depending on the type of analysis, the anatomical specimens must be fresh because macerated specimens will produce different results.

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Holographic evaluation of the marginal fits of complete crowns loaded at the central fossa

Cited by 4 publications

References 5 publications

Effect of proximal contact strength on the three-dimensional displacements of implant-supported cantilever fixed partial dentures under axial loading

Effect of proximal contact strength on the three-dimensional displacements of implant-supported cantilever fixed partial dentures under axial loading

Interferometría holográfica en odontología. Revisión de literatura

Holographic interferometry method for assessment of static load stress distribution in dog mandible

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