Anxiety for adverse health effects attributed to dental restorative materials especially dentalamalgam, have been discussed extensively off and on the last 30 years. The possible health effect ofamalgam and health effect of replacements of amalgam, have been extensively studied but theresults are inconclusive and the etiology of the reactions are not entirely elucidated. Furthermore,the question of psychological influence on symptoms attributed to dental restorative materials hasbeen raised and need further examination. The aims of this thesis were to describe the change in health over time for patient with symptomsattributed to their dental materials and to determine whether replacement of their dentalrestorative materials had any impact on their perceived health. Furthermore, to determine anddescribe the personality, self-image, level of psychological symptoms and stress among thesepatients and compare the results with those of healthy controls. Finally, to evaluate regression ofLichenoid Contact Reactions and Oral lichen Planus after replacement of the dental materials. A questionnaire was mailed to 614 patients that had been referred to the School of Dentistry, Umeå,Sweden with symptoms attributed to dental materials. Among these patients a subgroup with orallichen also underwent a clinical examination at follow-up. The result showed that patients with complex symptoms had a more unfavorable long-termprognosis concerning persistent complaints than those with local symptoms only. The oralsymptoms had decreased between baseline and follow-up and the general symptoms had increased.The increase in general symptoms was contradictory since many patients experienced healthimprovement after removal of their dental restorative materials. Concerning personality thepatients was characterized mainly by high persistence and by high fatigability and asthenia as wellas psychosocially learned high self-acceptance. Regarding self-image, both patients with LocalSymptoms Only and patients with Multi Symptoms, scored significantly higher on "spontaneous"and "positive self-image" than the reference group. The Multi symptoms group scored significantlyhigher on psychological symptoms compared to the reference group. However, the Local symptomsgroup did not differ from the references. The remission of oral lesions was after an exchange ofdental materials was seen to a greater extent in patients with Lichenoid Contact Reaction than inpatients with Oral Lichen Planus. Regarding psychological parameters, there were no significantdifferences between the groups. In conclusion symptoms related to dental restorative materials seem to be multi-factorial wheredental, medical, social, and psychological factors may be involved. Patient with complex symptomshave a more unfavorable prognosis than patient with local symptoms only. Patient with symptomsself-related to their dental materials may feel improvement in general health after an exchange ofdental materials. The group of patients seems to represent personalities that could be vulnerable inthe demanding modern society, and the various mental and somatic symptoms can be interpretedas attributed to dental fillings. Patients with Local Symptoms or Multi Symptoms are equalconcerning self-image, they are impulsive with an elevated positive self-image, that can result indifficulties in setting limits. Thus in combination with high demands may result in mental stress.The Multi Symptoms group was more psychologically stressed than the group with Local SymptomsOnly and the references. Therefore, before an exchange of dental materials is commenced inpatients with oral lichenoid lesions, a correct diagnosis is needed.

Made available in DSpace on 2017-07-24T19:21:59Z (GMT). No. of bitstreams: 1 Alessandra de Souza Martins.pdf: 1474170 bytes, checksum: 6073cf2497567587b6c6179d3b9e0c13 (MD5) Previous issue date: 2016-02-03 / This study investigated the attitudes of dentists on ART since the last month of graduation until six months after graduation, in order of the interest of using the strategy in the public and private service. This is a follow-up study with a sample in the first stage of the research consisted of 400 graduating students of dentistry courses 10 colleges of the Paraná state and the second time, these 400 students, 112 answered the questionnaire, now as professionals six months graduated. The investigated variables involved: general characteristics of participants, subjects in which ART was approached and practiced during graduation; knowledge built on the strategy; instructions for use; self-perception as security for the implementation of technical and credibility attributed to ART; employment intention of the strategy; workplace; participation in professional courses geared to ART; Use of the ART after graduation; results and barriers that involve the application of this strategy. Associations between variables were assessed using the chi-square test and exact Fisher. All participating colleges address the ART and this approach occurs mainly in the disciplines of Pediatric Dentistry and Public Health. Most individuals in the two stages of the study, believes that the ART strategy interrupts the carious process and prevents tooth loss, but the intention of use, among academics, and use, for professionals, is more directed to the public service than to private practice. Also in the two moments of the research atraumatic restorations were more suitable for primary teeth and considered provisional interventions. The use of claims in private practice was significantly associated to academic who used ART during graduation (p = 0.006); have the intention not to use the strategy in the private service was significantly higher among those who do not indicate ART for permanent teeth of adults and adolescents (p <0.001). The public school students have more contact with the ART strategy in other disciplines, as well as Public Health and Pediatric Dentistry, and students of private colleges were the most indicated ART for permanent teeth. The inapplicability of ART, after graduation, was significantly associated with the professionals who work exclusively in the private service (p = 0.012) and the study subjects began to indicate more ART for permanent teeth of pregnant women (p = 0.005), elderly (p = 0.002), adults (p <0.001) and females (p <0.001), and considers it as definitive procedure more (p = 0.008). This study identified that the ART is not considered a definitive therapy, and less suitable for the permanent dentition and for private practice. In addition, continuing education experienced by professionals seems to interfere in their attitudes towards ART strategy. / Este estudo investigou as atitudes de cirurgiões-dentistas sobre o ART, desde o último mês de graduação até seis meses após a formatura, em relação ao interesse de utilização da estratégia no serviço público e privado. Trata-se de um estudo de seguimento cuja amostra, na primeira etapa da pesquisa, foi composta por 400 acadêmicos concluintes dos cursos de odontologia de 10 faculdades paranaenses e no segundo momento, desses 400 acadêmicos, 112 responderam ao questionário,agora como profissionais formados há seis meses. As variáveis investigadas envolveram: características gerais dos participantes, disciplinas em que o ART foi abordado e praticado durante a graduação; conhecimento construído sobre a estratégia; indicações de uso; autopercepção quanto à segurança para a execução da técnica e credibilidade atribuída ao ART; pretensão de emprego da estratégia; local de trabalho; participação do profissional em cursos voltados ao ART; utilização do ART ao longo do período de formado; resultados e barreiras que envolvem a aplicação dessa estratégia. As associações entre as variáveis foram verificadas mediante os testes qui-quadrado e exato de Fischer. Todas as faculdades participantes abordam o ART e essa abordagem se dá majoritariamente nas disciplinas de Odontopediatria e Saúde Coletiva. A maioria dos indivíduos, nas duas etapas do estudo, acredita que a estratégia ART interrompe o processo carioso e evita a perda do elemento dentário, porém a pretensão de uso, entre os acadêmicos, e o uso, para os profissionais, está mais direcionada para o serviço público do que para o consultório privado. Também nos dois momentos da pesquisa as restaurações atraumáticas foram mais indicadas para dentes decíduos e consideradas intervenções provisórias. A pretensão de uso no consultório privado associou-se significativamente aos acadêmicos que utilizaram o ART durante a graduação (p=0,006); já a intensão de não utilizar a estratégia no serviço privado foi significativamente maior entre os que não indicam o ART para dentes permanentes de adultos e adolescentes (p<0,001). Os alunos das escolas públicas tem mais contato com a estratégia ART em outras disciplinas, além da Saúde Coletiva e da Odontopediatria, e os alunos das faculdades privadas foram os que mais indicaram o ART para dentes permanentes. A não aplicabilidade do ART, após a formatura, associou-se significativamente aos profissionais que trabalham exclusivamente no serviço privado (p=0,012) e os sujeitos do estudo passaram a indicar mais o ART para dentes permanentes de gestantes (p=0,005), idosos (p=0,002), adultos (p<0,001) e adolescentes (p<0,001) e a considera-lo mais como procedimento definitivo (p=0,008). Este estudo identificou que o ART não é considerado uma terapia definitiva, sendo menos indicado para a dentição permanente e para o consultório particular. Além disso, a educação permanente vivenciada pelos profissionais, parece interferir em suas atitudes perante a estratégia ART.

Orientador: Angela Cristina Cilense Zuanon / Banca: Mariane Emi Sanabe / Banca: Paulo Zárate Pereira / Banca: Ticiana Sidorenko de Oliveira Capote / Banca: Carlos Alberto dos Santos Cruz / Resumo: Proposição: O objetivo deste trabalho, dividido em três estudos, foi investigar o efeito após a aplicação de ondas de ultrassom sobre cimentos de ionômero de vidro (CIV) (1) a dureza da dentina subjacente, hígida e afetada por cárie; (2) a resistência de união à dentina hígida e afetada por cárie (3) e à rugosidade do material após ensaio de escovação. Materiais e métodos: Nos três estudos foram utilizados os CIV Vitremer (VT) e Ketac Molar Easymix (KM). Para o estudo 1 foram realizados preparos cavitários (3 mm de largura, 5 mm de comprimento e 2 mm de profundidade) na face vestibular de 80 incisivos bovinos. Foi realizada a indução de lesão de cárie artificial pelo método microbiológico (n=40). Os dentes foram distribuídos em 8 grupos (n=10), segundo o substrato (hígido ou afetado por cárie), material utilizado (VT ou KM) e o tratamento recebido (com ou sem a aplicação de ondas de ultrassom). A aplicação de ondas de ultrassom foi realizada por 30 segundos. Após 30 dias de armazenagem em água os dentes foram seccionados e as leituras de dureza Knoop realizadas na dentina subjacente ao material até 200 μm de distância da interface dentina/CIV. No segundo estudo foram confeccionados 20 blocos de dentina bovina para cada material, sendo que 10 deles foram submetidos ao processo de indução de lesão de cárie artificial e subsequente remoção da dentina contaminada. Em cada bloco foram confeccionados dois corpos de prova com 1,5 cm de altura e 3 cm de diâmetro, sendo o primeiro com e o segundo sem a aplicação de 30 segundos de ondas de ultrassom. Após 24 horas, os corpos de prova foram submetidos ao ensaio mecânico de cisalhamento. No terceiro trabalho 32 espécimes de cada material, VT e KM, foram confeccionados em matriz de dente bovino, sendo que a metade recebeu ondas... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Aim: This work was divided into three studies. The objective was to investigate the effect of ultrasound application on glass ionomer cement (GIC), analyzing underlying dentin hardness, bond strength to noncarious dentin and cariesaffected dentin and the material roughness after toothbrushing test. Materials and methods: GIC Vitremer (VT) and Easymix Ketac Molar (KM) were used in these studies. In the first study, cavities (3 mm wide, 5 mm in length and 2 mm deep) were performed on the buccal surface of eighty bovine incisors. Microbiological method was used to induce artificial caries lesions (n = 40). The teeth were divided into 8 groups (n = 10), according the substrate (noncarious dentin or caries-affected dentin), the material used (VT or KM) and the treatment received (with or without ultrasound application). The ultrasound application was performed for 30 seconds, and teeth stored in water for 30 days. After that, the specimens were sectioned and transversal hardness evaluation was performed in the underlying dentin material up to depth of 200 μm. In the second study, 20 dentin blocks were used for each material. Ten of them were artificially decayed and performed subsequent removal of infected dentin. In each block, two specimens (1.5 cm high and 3 cm diameter) were performed, the first with and the second without ultrasound application. After 24 hours the specimens were shear bonding tested. For the third study 32 specimens of each material, VT and KM, were prepared using a bovine tooth matrix. Half of them received a 30 s ultrasound application during its initial setting. The surface roughness, before and after toothbrushing test, was evaluated at 24 hours (n = 16) and 30 days (n = 16). Data were analyzed by ANOVA and Tukey tests. For all the studies, the statistical tests were considered at the present level... (Complete abstract click electronic access below) / Doutor

Made available in DSpace on 2014-06-11T19:31:05Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-05-07Bitstream added on 2014-06-13T20:21:49Z : No. of bitstreams: 1 coldebella_cr_dr_arafo.pdf: 1165027 bytes, checksum: 68372d3e55cbf9fcc5b26e1b2514cf7c (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Proposição: O objetivo deste trabalho, dividido em três estudos, foi investigar o efeito após a aplicação de ondas de ultrassom sobre cimentos de ionômero de vidro (CIV) (1) a dureza da dentina subjacente, hígida e afetada por cárie; (2) a resistência de união à dentina hígida e afetada por cárie (3) e à rugosidade do material após ensaio de escovação. Materiais e métodos: Nos três estudos foram utilizados os CIV Vitremer (VT) e Ketac Molar Easymix (KM). Para o estudo 1 foram realizados preparos cavitários (3 mm de largura, 5 mm de comprimento e 2 mm de profundidade) na face vestibular de 80 incisivos bovinos. Foi realizada a indução de lesão de cárie artificial pelo método microbiológico (n=40). Os dentes foram distribuídos em 8 grupos (n=10), segundo o substrato (hígido ou afetado por cárie), material utilizado (VT ou KM) e o tratamento recebido (com ou sem a aplicação de ondas de ultrassom). A aplicação de ondas de ultrassom foi realizada por 30 segundos. Após 30 dias de armazenagem em água os dentes foram seccionados e as leituras de dureza Knoop realizadas na dentina subjacente ao material até 200 μm de distância da interface dentina/CIV. No segundo estudo foram confeccionados 20 blocos de dentina bovina para cada material, sendo que 10 deles foram submetidos ao processo de indução de lesão de cárie artificial e subsequente remoção da dentina contaminada. Em cada bloco foram confeccionados dois corpos de prova com 1,5 cm de altura e 3 cm de diâmetro, sendo o primeiro com e o segundo sem a aplicação de 30 segundos de ondas de ultrassom. Após 24 horas, os corpos de prova foram submetidos ao ensaio mecânico de cisalhamento. No terceiro trabalho 32 espécimes de cada material, VT e KM, foram confeccionados em matriz de dente bovino, sendo que a metade recebeu ondas... / Aim: This work was divided into three studies. The objective was to investigate the effect of ultrasound application on glass ionomer cement (GIC), analyzing underlying dentin hardness, bond strength to noncarious dentin and cariesaffected dentin and the material roughness after toothbrushing test. Materials and methods: GIC Vitremer (VT) and Easymix Ketac Molar (KM) were used in these studies. In the first study, cavities (3 mm wide, 5 mm in length and 2 mm deep) were performed on the buccal surface of eighty bovine incisors. Microbiological method was used to induce artificial caries lesions (n = 40). The teeth were divided into 8 groups (n = 10), according the substrate (noncarious dentin or caries-affected dentin), the material used (VT or KM) and the treatment received (with or without ultrasound application). The ultrasound application was performed for 30 seconds, and teeth stored in water for 30 days. After that, the specimens were sectioned and transversal hardness evaluation was performed in the underlying dentin material up to depth of 200 μm. In the second study, 20 dentin blocks were used for each material. Ten of them were artificially decayed and performed subsequent removal of infected dentin. In each block, two specimens (1.5 cm high and 3 cm diameter) were performed, the first with and the second without ultrasound application. After 24 hours the specimens were shear bonding tested. For the third study 32 specimens of each material, VT and KM, were prepared using a bovine tooth matrix. Half of them received a 30 s ultrasound application during its initial setting. The surface roughness, before and after toothbrushing test, was evaluated at 24 hours (n = 16) and 30 days (n = 16). Data were analyzed by ANOVA and Tukey tests. For all the studies, the statistical tests were considered at the present level... (Complete abstract click electronic access below)