• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 2
  • 1
  • Tagged with
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Efeitos da laserterapia no comportamento nociceptivo e na atividade neuronal do núcleo trigeminal após lesão unilateral do disco da articulação temporomandibular em ratos / Effects of Laser therapy in nociceptive behavior and neuronal activity in trigeminal nucleus after unilateral lesion in the disc of temporomandibular joint in rats

Rodrigues, Alex de Freitas 17 February 2017 (has links)
A proposta deste trabalho foi analisar os efeitos da laserterapia de baixa potência(LLLT) no comportamento nociceptivo e na atividade neuronal do núcleo trigeminal após lesão unilateral do disco da articulação temporomandibular (ATM) em ratos. Foram utilizados 40 ratos. Foi realizado acesso cirúrgico na ATM sob anestesia geral. Os animais foram divididos em 4 grupos (n=10): Grupo 1: Lesão cirúrgica do disco articular e LLLT; Grupo 2: Sham - operado e LLLT; Grupo 3: Lesão cirúrgica do disco articular; Grupo 4, Naive: controle sem lesão articular ou LLLT. Foram realizadas 10 sessoes de LLLT com laser de GaAs com comprimento de onda de 904 nm e densidade de energia 6J/cm2.O desenvolvimento de sintomas neuropáticos foi avaliado pelo teste de Von Frey. As amostras do gânglio trigêmeo foram preparadas para determinação da expressão proteica da substancia P (SP), do receptor de potencial transiente vaniloide do subptipo-1 (TRPV-1) e do peptídeo relacionado ao gene da calcitonina (CGRP). Análise estatística foi realizada (p<0,050). Houve reversão total do limiar nociceptivo, a partir da primeira sessão no grupo1, e a partir da segunda sessão no grupo 2, e se manteve até a décima sessão. Houve um aumento da expressão de SP, TRPV-1 e CGRP no gânglio trigeminal no grupo 3 e uma diminuição significativa após a LLLT no grupo 1. Foi concluído que o uso da laserterapia tem efetividade para diminuição do comportamento nociceptivo, e que seu uso nesse modelo de lesão experimental se mostrou viável para estudo experimental das disfunções temporomandibulares. / The purpose of this study was to analyze the effects of low level laser therapy (LLLT) on nociceptive behavior and trigeminal nucleus neuronal activity after unilateral temporomandibular joint (TMJ) disc injury in rats. 40 rats were used. Surgical access to TMJ under general anesthesia was performed. The animals were divided into 4 groups (n = 10): Group 1: Surgical lesion of the articular disc and LLLT; Group 2: sham operated and LLLT; Group 3: Surgical lesion of the articular disc; Group 4, Naive: control without joint injury or LLLT. Ten sessions of LLLT were performed with GaAs laser with wavelength of 904 nm and energy density 6J / cm2. The development of neuropathic symptoms was evaluated by the von Frey test. The trigeminal ganglion samples were prepared for determination of the protein expression of substance P (SP), vanilloid transient potential receptor of subtype-1 (TRPV-1) and peptide related to the calcitonin gene (CGRP). Statistical analysis was performed (p <0.050). There was a total reversal of the nociceptive threshold, from the first session in group1, and from the second session in group 2, and remained until the tenth session. There was an increase in the expression of SP, TRPV-1 and CGRP in the trigeminal ganglion in group 3 and a significant decrease after LLLT in group 1. It was concluded that the use of laser therapy is effective in reducing nociceptive behavior, and that the use of this Model of experimental lesion proved to be feasible for the experimental study of temporomandibular disorders.
2

Efeitos da laserterapia no comportamento nociceptivo e na atividade neuronal do núcleo trigeminal após lesão unilateral do disco da articulação temporomandibular em ratos / Effects of Laser therapy in nociceptive behavior and neuronal activity in trigeminal nucleus after unilateral lesion in the disc of temporomandibular joint in rats

Alex de Freitas Rodrigues 17 February 2017 (has links)
A proposta deste trabalho foi analisar os efeitos da laserterapia de baixa potência(LLLT) no comportamento nociceptivo e na atividade neuronal do núcleo trigeminal após lesão unilateral do disco da articulação temporomandibular (ATM) em ratos. Foram utilizados 40 ratos. Foi realizado acesso cirúrgico na ATM sob anestesia geral. Os animais foram divididos em 4 grupos (n=10): Grupo 1: Lesão cirúrgica do disco articular e LLLT; Grupo 2: Sham - operado e LLLT; Grupo 3: Lesão cirúrgica do disco articular; Grupo 4, Naive: controle sem lesão articular ou LLLT. Foram realizadas 10 sessoes de LLLT com laser de GaAs com comprimento de onda de 904 nm e densidade de energia 6J/cm2.O desenvolvimento de sintomas neuropáticos foi avaliado pelo teste de Von Frey. As amostras do gânglio trigêmeo foram preparadas para determinação da expressão proteica da substancia P (SP), do receptor de potencial transiente vaniloide do subptipo-1 (TRPV-1) e do peptídeo relacionado ao gene da calcitonina (CGRP). Análise estatística foi realizada (p<0,050). Houve reversão total do limiar nociceptivo, a partir da primeira sessão no grupo1, e a partir da segunda sessão no grupo 2, e se manteve até a décima sessão. Houve um aumento da expressão de SP, TRPV-1 e CGRP no gânglio trigeminal no grupo 3 e uma diminuição significativa após a LLLT no grupo 1. Foi concluído que o uso da laserterapia tem efetividade para diminuição do comportamento nociceptivo, e que seu uso nesse modelo de lesão experimental se mostrou viável para estudo experimental das disfunções temporomandibulares. / The purpose of this study was to analyze the effects of low level laser therapy (LLLT) on nociceptive behavior and trigeminal nucleus neuronal activity after unilateral temporomandibular joint (TMJ) disc injury in rats. 40 rats were used. Surgical access to TMJ under general anesthesia was performed. The animals were divided into 4 groups (n = 10): Group 1: Surgical lesion of the articular disc and LLLT; Group 2: sham operated and LLLT; Group 3: Surgical lesion of the articular disc; Group 4, Naive: control without joint injury or LLLT. Ten sessions of LLLT were performed with GaAs laser with wavelength of 904 nm and energy density 6J / cm2. The development of neuropathic symptoms was evaluated by the von Frey test. The trigeminal ganglion samples were prepared for determination of the protein expression of substance P (SP), vanilloid transient potential receptor of subtype-1 (TRPV-1) and peptide related to the calcitonin gene (CGRP). Statistical analysis was performed (p <0.050). There was a total reversal of the nociceptive threshold, from the first session in group1, and from the second session in group 2, and remained until the tenth session. There was an increase in the expression of SP, TRPV-1 and CGRP in the trigeminal ganglion in group 3 and a significant decrease after LLLT in group 1. It was concluded that the use of laser therapy is effective in reducing nociceptive behavior, and that the use of this Model of experimental lesion proved to be feasible for the experimental study of temporomandibular disorders.
3

Pathologies fonctionnelles mandibulaires, de l'outil numérique à la recherche applicative / Mandibular functional pathologies, numerical tool for applicative research

Jaisson, Maxime 20 September 2013 (has links)
Le principal objectif de cette thèse a été d'utiliser des outils numériques en sciences pour l'ingénieur dans le cadre d'applications médicales dont le but était de mieux appréhender la pathogénie des troubles fonctionnels, et de développer de nouvelles techniques thérapeutiques (sphère orofaciale). Dans un premier temps l'outil éléments finis s'appuyant sur des données rhéologiques a été utilisé afin de mieux appréhender la problématique de l'articulation temporo-mandibulaire. Les résultats numériques associés à une captation du mouvement de la mandibule ont permis de mieux comprendre, au sens, mécanique certains aspects mandibulaires. Par ailleurs, dans un deuxième temps, l'outil CAO a été mis en œuvre afin d'aider la préparation de la chirurgie maxillofaciale. Cette nouvelle approche a permis de mettre en œuvre une nouvelle méthodologie en chirurgie des tumeurs interruptrices en améliorant (i) le contrôle du résultat esthétique, (ii) la réduction du temps opératoire et (iii) le respect de la bonne congruence de l'ATM. / The main objective of this thesis was to use numerical engineering softwares in the framework of medical applications whose purpose was to understand the pathogenesis functional disorders, and to develop new therapeutic techniques (orofacial sphere). At first, finite elements tools based on rheological data has been used to understand the problem of TMJ. Numerical results associated with motion capture of the mandible have a better understanding the mandibular mechanical aspects. Moreover, in a second step, the CAD tools implemented to assist the preparation of the maxillofacial surgery. This new approach allowed a new methodology surgery interrupter tumors improving (i) controling the esthetic result, (ii) reducing the operating time and (iii) respecting a good TMJ congruence.

Page generated in 0.0409 seconds