O processo de fusão completa foi investigado para a reação ANTPOT. 18 O + ANTPOT 10 B dentro do intervalo de energia de bombardeio 29,0 Mev <E IND. LAB < 72,0 Mev, no intervalo angular 5º < IND. LAB. < 27º. Para esta finalidade foi desenvolvida e construída uma câmara de ionização sensível à posição de alta resolução. Resultados experimentais comparados com previsões de modelos e sistemáticas encontradas na literatura permitem rejeitar a limitarão pelo núcleo composto para e seção de choque de fusão em energias até aproximadamente cinco vezes a barreira coulombiana. Ajustes das intensidades relativas elementares por cálculos em base e o modelo estatístico revelam uma difusividade considerável das seções de choque parciais de fusão no espeço de momento angular. Análises sistemáticas das alturas (V IND. B) e raios da barreira de fusão (R IND. B) pare núcleos vizinhos sugerem uma grande importância da difusividade da matéria nuclear na competição entre os processos de fusão e quasi-elásticos. Cálculos dentro deste contexto foram realizados. / The 18 O + 10 B within the bombarding energy range of 29,0 Mev < E LAB < 72,0 Mev, covering the 5° angular range. For this purpose, a high resolution position sensitive ionization chamber has been developed and constructed. Experimental results compared to model predictions and experimental systematics found in the literature allows to reject compound nucleus limitation to the fusion cross section up to energies as high as five times the coulomb barrier. Statistical model fits to the residues elementary distributions reveal a quite difuse partial fusion cross section in the angular momentum space. Systematic analysis of fusion barrier height (VB) and radius for neighbouring nuclei point out the importance of the nuclear matter diffuseness in the competition between the fusion and quasi-direct process. Calculations within this framework were performed.

Um dos obstáculos na confecção das próteses totais é a diminuição de espaço intermaxilar para a montagem dos dentes artificiais posteriores, particularmente dos segundos molares, que influencia o tempo dispendido pelo profissional, pois gera a necessidade de desgaste da base de prova e muitas vezes do próprio dente. Na tentativa de contornar esse obstáculo, em alguns casos, tem-se suprimido a montagem dos segundos molares, uma vez que a ausência destes elementos não influencia a estética, fonética e conforto. Não há relatos na literatura que abordam este assunto, apesar de existirem estudos com arco encurtados e de performance mastigatória de próteses. O objetivo deste estudo foi comparar a eficiência mastigatória de pacientes portadores de próteses totais maxilomandibulares com arco reduzido (sem os segundos molares superiores e inferiores) e com o arco completo. Vinte indivíduos usuários de próteses totais maxilomandibulares, divididos em dois grupos aleatoriamente, receberam aparelhos protéticos novos. O grupo 1 recebeu as próteses sem os segundos molares e o grupo 2, com segundo molares. Após as consultas de controle, foi realizado o primeiro teste de eficiência mastigatória com Optocal. Quinze dias após o primeiro teste de performance mastigatória, foi realizado um novo teste, neste momento foram posicionados os segundos molares no grupo 1 e removidos no grupo 2. O material cominuído foi tratado e peneirado em uma pilha de peneiras sob vibração. A média e desvio padrão da eficiência mastigatória dos sujeitos no teste com todos os dentes posicionados foi de 4 e 0,68, respectivamente. Enquanto que, no teste sem os segundos molares foi de 4,22 e 0,92, respectivamente. Em relação ao momento da remoção dos segundos molares, a média do grupo 1 foi de 4,22 e desvio padrão de 0,63 e, do grupo 2 foi de 3,78 e 0,72, respectivamente. De acordo com a análise estatística realizada (p<0,05) não houve diferença na eficiência mastigatória em próteses totais maxilo-mandibulares com arco dental terminando em primeiro ou segundo molares. Portanto, a montagem de dentes até primeiros molares pode ser executada quando necessário, sem que haja comprometimento da eficiência mastigatória. / One obstacle when placing posterior artificial teeth during the manufacturing of complete dentures is the reduction of spatial relationship of the maxillae to the mandible. It affects the work time of the technician, once it requires abrasion of the denture base and the artificial tooth itself. Occasionally, the placement of the second molars is suppressed, for it does not affect aesthetics, phonetics and comfort. There are no reports in literature on this subject; despite studies involving shortened dental arches and dentures masticatory performance. The aim of this study was to compare masticatory efficiency of maxillomandibular complete denture wearers with reduced dental arch (without superior and inferior second molars) and complete dental arch. Twenty subjects were divided in two groups randomly and received new dentures. Group 1 was given complete dentures without second molars and group 2 was given dentures with second molars. After post-insertion consults, the first masticatory efficiency test was taken with Optocal. Fifteen days after the first test, a new one was taken, in which second molars were positioned in group 1 and removed from group 2. Comminuted material was treated and sieved on a stack of sieves under vibration. Mean and standard deviation of subjects masticatory efficiency with complete dental arch was 4 and 0.68, respectively. While on the tests without second molars, mean and standard deviation were 4.22 and 0.92, respectively. Analyzing the moment of removal of second molars from the dental arch, mean of group 1 was 4.22 and standard deviation 0,63 and, group 2 3.78 and 0.72, respectively. According to the statistical analysis applied to this study (p<0,05), there were no differences on masticatory efficiency in complete dentures with or without second molars. Therefore, placing artificial teeth until first molars can be done when needed, without compromising masticatory efficiency.

Os probióticos são organismos vivos que quando ingeridos em quantidades adequadas, conferem benefícios aos indivíduos. Um destes benefícios é a capacidade de inibir o crescimento de micro-organismos patogênicos como Candida. Para avaliar a redução ou inibição de Candida em usuários de próteses totais promovida pela ingestão de probióticos, foram recrutados 135 pacientes, dos quais 59 permaneceram até o final do período experimental de 8 semanas. A ingestão dos probióticos ocorreu através de sua incorporação em queijo minas frescal. Foram selecionados pacientes usuários de próteses totais, uni ou bimaxilares albergando Candida na cavidade bucal. As amostras foram coletadas através de um enxaguado bucal 1 semana antes do início do experimento e ao final do período experimental de 8 semanas. Foi determinado o número de UFC de Candida/ml da amostra. Os sujeitos da pesquisa (n=59) receberam embalagens com 20g de queijo minas frescal a cada 14 dias por 8 semanas consecutivas. Os participantes foram divididos aleatoriamente em três grupos, experimental 1 e 2, e controle. Os grupos experimentais receberam os queijos suplementados com probióticos, respectivamente, Lactobacillus acidophilus NCFM e Lactobacillus rhamnosus Lr-32, e o grupo controle recebeu o queijo sem suplementação probiótica. Os queijos possuíam semelhança quanto a aroma e cor. Além da quantificação de Candida, foram realizados testes para identificação das espécies e avaliação da atividade enzimática da fosfolipase e proteinase. Os resultados inferem que os probióticos L. acidophilus NCFM e L. rhamnosus Lr-32 suplementados em queijo minas frescal foram capazes de reduzir os níveis de Candida bucal, em pacientes usuários de próteses totais, após ingestão diária dos queijos por 8 semanas consecutivas. Antes e após 8 semanas do experimento, Candida albicans foi a espécie mais isolada dos pacientes nos três grupos avaliados. Não houve diferença significativa com relação à atividade enzimática da fosfolipase e proteinase, pelos isolados de Candida sp., antes e após 8 semanas de ingestão do queijo. Conclusão: os dados indicam que queijos contendo L. acidophilus NCFM ou L. rhamnosus Lr-32 tem o potencial de reduzir a colonização oral por Candida, sugerindo a sua utilização para reduzir o risco de candidoses da cavidade oral. / Probiotics are living organisms which when ingested in adequate amounts confer benefits to individuals. One of these benefits is the ability to inhibit the growth of pathogenic microorganisms such as Candida. Reduction or inhibition of Candida isolated from complete denture wearers, uni or bimaxillary, was evaluated by ingestion of minas frescal cheese supplemented with probiotics. 135 patients were recruited, who 59 remained until the end of the experiment. The participants were patients in treatment at the Faculdade de Odontologia da Universidade de São Paulo. The samples were collected through a rinsed mouthwash at the base line and 8 weeks of experiment, before the installation of the new prosthesis. The samples were inoculated on Saubouraud agar dextrose with chloramphenicol plates, incubated for 24-48 hours, in order to quantify in colony-forming units per milliliter (CFU/mL) of Candida presents in the oral cavity of these patients. Subjects who presented fungus positive culture received packages containing 20g of minas frescal cheese every 14 days for 8 consecutive weeks. The participants were divided into three groups: two experimental and one control. The experimental groups received the cheeses supplemented with probiotics Lactobacillus acidophilus NCFM and Lactobacillus rhamnosus Lr-32. The control group received the cheese without probiotic supplementation. The cheeses had similarity as flavoring and coloring. In addition to the quantification of Candida, tests for species identification, phospholipase and proteinase activities were carried out. The results infer that L. acidophilus NCFM and L. rhamnosus Lr-32 supplemented in minas frescal cheese were able to reduce the levels of oral Candida in complete denture wearers, after daily intake of cheeses for 8 weeks of the experiment. At baseline and after 8 weeks of the experiment Candida albicans was the most frequently isolated from denture wearers in all groups. Furthermore, no significant difference was observed in the phospholipase and proteinase activities by isolates of Candida sp., before and after 8 weeks of ingestion of cheese. Conclusion: The data indicate that L. acidophilus NCFM and L. rhamnosus Lr-32 has the potencial to reduce Candida colonization in oral cavity, suggesting its use for reducing the risk of oral candidiasis.

Kwok-Shing Ho. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2002. / Includes bibliographical references (leaves 69-71). / Abstracts in English and Chinese. / List of Figures --- p.vi / List of Tables --- p.vii / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Overview --- p.1 / Chapter 1.2 --- Thesis Objectives --- p.6 / Chapter 1.3 --- Outline of Thesis --- p.8 / Chapter Chapter 2 --- The Spare Capacity Planning Problem --- p.9 / Chapter 2.1 --- Mathematical Model of the Spare Capacity Planning Problem --- p.12 / Chapter 2.1.1 --- Variable Definitions --- p.12 / Chapter 2.1.2 --- Objective Function and Constraints --- p.15 / Chapter 2.1.3 --- Complexity --- p.17 / Chapter 2.2 --- Greedy Algorithm - Spare Capacity Allocation and Planning Estimator (SCAPE) --- p.19 / Chapter 2.2.1 --- Working Principle of SCAPE --- p.20 / Chapter 2.2.2 --- Implementation of SCAPE --- p.22 / Chapter 2.2.3 --- Improved SCAPE --- p.23 / Chapter 2.3 --- Experimental Results and Discussion --- p.27 / Chapter 2.3.1 --- Experimental Platform --- p.27 / Chapter 2.3.2 --- Experiment about Accuracy of SCAPE --- p.27 / Chapter 2.3.3 --- Experiment about Minimization of Network Spare Capacity --- p.30 / Chapter 2.3.4 --- Experiment about Minimization of Network Spare Cost --- p.35 / Chapter 2.4 --- Conclusions --- p.38 / Chapter Chapter 3 --- Survivable All-Optical Network Design Problem --- p.39 / Chapter 3.1 --- Mathematical Model of the Survivable Network Design Problem --- p.42 / Chapter 3.2 --- Optimization Algorithms for Survivable Network Design Problem --- p.44 / Chapter 3.2.1 --- Modified Drop Algorithm (MDA) --- p.45 / Chapter 3.2.1.1 --- Drop Algorithm Introduction --- p.45 / Chapter 3.2.1.2 --- Network Design with MDA --- p.45 / Chapter 3.2.2 --- Genetic Algorithm --- p.47 / Chapter 3.2.2.1 --- Genetic Algorithm Introduction --- p.47 / Chapter 3.2.2.2 --- Network Design with GA --- p.48 / Chapter 3.2.3 --- Complexity of MDA and GA --- p.51 / Chapter 3.3 --- Experimental Results and Discussion --- p.52 / Chapter 3.3.1 --- Experimental Platform --- p.52 / Chapter 3.3.2 --- Experiment about Accuracy of MDA and GA --- p.52 / Chapter 3.3.3 --- Experiment about Principle of Survivable Network Design --- p.55 / Chapter 3.3.4 --- Experiment about Performance of MDA and GA --- p.58 / Chapter 3.4 --- Conclusions --- p.62 / Chapter Chapter 4 --- Conclusions and Future Work --- p.63 / Appendix A The Interference Heuristic for the path restoration scheme --- p.66 / Bibliography --- p.69 / Publications --- p.72

As dificuldades de pronúncia percebidas por adultos jovens e idosos, ambos totalmente desdentados com ou sem próteses completas, e por adultos com dentição natural, foram investigadas e relacionadas a suas respectivas avaliações miofuncionais orais, adaptação às novas próteses e idade. Os participantes foram solicitados a julgar por procedimento psicofísico a dificuldade de pronunciar: (1) frases com predomínio de cada fonema do idioma português brasileiro e (2) frases com predominância de fonemas fricativos. Estes julgamentos foram realizados em três sessões: (1) na condição oral em que se encontravam os participantes antes de tratamento odontológico, (2) após uma semana da instalação da prótese total e (3) após aproximadamente 40 dias de uso da prótese total. As tarefas para a avaliação miofuncional de cada participante foram realizadas em cada sessão, gravadas em videocassete e posteriormente avaliadas por duas fonoaudiólogas. As avaliações miofuncionais indicaram alterações entre as sessões quanto às condições musculares, a postura de lábios e de língua, nas funções de deglutição, na mastigação e na fala dos usuários de prótese total, independente da idade dos participantes. Houve diferença entre as frases quanto à dificuldade para pronunciar, independentemente se os participantes eram ou não desdentados. As avaliações da condição muscular e das funções orais foram correlacionadas com os julgamentos de dificuldade para pronúncia, indicando que as condições musculares e funcionais dos usuários de prótese total interferem na produção de frases com determinados fonemas e na dificuldade de sua pronúncia. / Perceived difficulties of pronunciation by totally-edentulous young adults and totally-edentulous old people, both with and without complete denture, and by adults with natural dentition were investigated and related to their oral miofunctional evaluations, adaptation to the usage of complete denture, and age. For such purpose, the participants were asked to judge by psychophysical procedure the difficult to pronounce: (1) sentences with predominance of each phoneme of the Brazilian Portuguese idiom and (2) sentences with predominance of fricative phonemes. These judgments were carried out in sessions: (1) in the oral condition that the participants exhibited before the onset of the dental treatment, (2) one week after the insertion of the complete denture and (3) after approximately 40 days of routine usage of the complete denture. The tasks for miofunctional evaluations of each participant were performed before each session, videocassette recorded and further evaluated by two speech therapists. The miofunctional evaluations revealed alterations in the muscular structures, positions of the lips and tongue, functions of deglutition, mastication and speech of the users of complete dentures at the three sessions, irrespectively of the age. There were differences among the judgments regarding the difficulty to pronounce the sentences, regardless whether or not the participants were edentulous. The evaluations of the muscular condition and oral functions were correlated to the judgments of the difficulty of pronunciation, indicating that the functional and muscular conditions of the users of complete dentures interfere with the production the sentences with certain phonemes, as well as with the difficulty of their pronunciation.

by Lui Oi Lun Irene. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2001. / Includes bibliographical references (leaves 128-132). / Abstracts in English and Chinese. / List of Figures --- p.vii / List of Tables --- p.viii / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Satisfiability Problem --- p.1 / Chapter 1.2 --- Motivation of the Research --- p.1 / Chapter 1.3 --- Overview of the Thesis --- p.2 / Chapter 2 --- Constraint Satisfaction Problem and Satisfiability Problem --- p.4 / Chapter 2.1 --- Constraint Programming --- p.4 / Chapter 2.2 --- Satisfiability Problem --- p.6 / Chapter 2.3 --- Methods in Solving SAT problem --- p.7 / Chapter 2.3.1 --- Davis-Putnam-Loveland Procedure --- p.7 / Chapter 2.3.2 --- SATZ by Chu-Min Li --- p.8 / Chapter 2.3.3 --- Local Search for SAT --- p.11 / Chapter 2.3.4 --- Integer Linear Programming Method for SAT --- p.12 / Chapter 2.3.5 --- Semidefinite Programming Method --- p.13 / Chapter 2.4 --- Softwares for SAT --- p.15 / Chapter 2.4.1 --- SAT01 --- p.15 / Chapter 2.4.2 --- "SATZ and SATZ213, contributed by Chu-Min Li" --- p.15 / Chapter 2.4.3 --- Others --- p.15 / Chapter 3 --- Integer Programming --- p.17 / Chapter 3.1 --- Introduction --- p.17 / Chapter 3.1.1 --- Formulation of IPs and BIPs --- p.18 / Chapter 3.1.2 --- Binary Search Tree --- p.19 / Chapter 3.2 --- Methods in Solving IP problem --- p.19 / Chapter 3.2.1 --- Branch-and-Bound Method --- p.20 / Chapter 3.2.2 --- Cutting-Plane Method --- p.23 / Chapter 3.2.3 --- Duality in Integer Programming --- p.26 / Chapter 3.2.4 --- Heuristic Algorithm --- p.28 / Chapter 3.3 --- Zero-one Optimization and Continuous Relaxation --- p.29 / Chapter 3.3.1 --- Introduction --- p.29 / Chapter 3.3.2 --- The Roof Dual expressed in terms of Lagrangian Relaxation --- p.30 / Chapter 3.3.3 --- Determining the Existence of a Duality Gap --- p.31 / Chapter 3.4 --- Software for solving Integer Programs --- p.33 / Chapter 4 --- Integer Programming Formulation for SAT Problem --- p.35 / Chapter 4.1 --- From 3-CNF SAT Clauses to Zero-One IP Constraints --- p.35 / Chapter 4.2 --- From m-Constrained IP Problem to Singly-Constrained IP Problem --- p.38 / Chapter 4.2.1 --- Example --- p.39 / Chapter 5 --- A Basic Branch-and-Bound Algorithm for the Zero-One Polynomial Maximization Problem --- p.42 / Chapter 5.1 --- Reason for choosing Branch-and-Bound Method --- p.42 / Chapter 5.2 --- Searching Algorithm --- p.43 / Chapter 5.2.1 --- Branch Rule --- p.44 / Chapter 5.2.2 --- Bounding Rule --- p.46 / Chapter 5.2.3 --- Fathoming Test --- p.46 / Chapter 5.2.4 --- Example --- p.47 / Chapter 6 --- Revised Bound Rule for Branch-and-Bound Algorithm --- p.55 / Chapter 6.1 --- Revised Bound Rule --- p.55 / Chapter 6.1.1 --- CPLEX --- p.57 / Chapter 6.2 --- Example --- p.57 / Chapter 6.3 --- Conclusion --- p.65 / Chapter 7 --- Revised Branch Rule for Branch-and-Bound Algorithm --- p.67 / Chapter 7.1 --- Revised Branch Rule --- p.67 / Chapter 7.2 --- Comparison between Branch Rule and Revised Branch Rule --- p.69 / Chapter 7.3 --- Example --- p.72 / Chapter 7.4 --- Conclusion --- p.73 / Chapter 8 --- Experimental Results and Analysis --- p.80 / Chapter 8.1 --- Experimental Results --- p.80 / Chapter 8.2 --- Statistical Analysis --- p.33 / Chapter 8.2.1 --- Analysis of Search Techniques --- p.83 / Chapter 8.2.2 --- Discussion of the Performance of SATZ --- p.85 / Chapter 9 --- Concluding Remarks --- p.87 / Chapter 9.1 --- Conclusion --- p.87 / Chapter 9.2 --- Suggestions for Future Research --- p.88 / Chapter A --- Searching Procedures for Solving Constraint Satisfaction Problem (CSP) --- p.91 / Chapter A.1 --- Notation --- p.91 / Chapter A.2 --- Procedures for Solving CSP --- p.92 / Chapter A.2.1 --- Generate and Test --- p.92 / Chapter A.2.2 --- Standard Backtracking --- p.93 / Chapter A.2.3 --- Forward Checking --- p.94 / Chapter A.2.4 --- Looking Ahead --- p.95 / Chapter B --- Complete Results for Experiments --- p.96 / Chapter B.1 --- Complete Result for SATZ --- p.96 / Chapter B.1.1 --- n =5 --- p.95 / Chapter B.1.2 --- n = 10 --- p.98 / Chapter B.1.3 --- n = 30 --- p.99 / Chapter B.2 --- Complete Result for Basic Branch-and-Bound Algorithm --- p.101 / Chapter B.2.1 --- n二5 --- p.101 / Chapter B.2.2 --- n = 10 --- p.104 / Chapter B.2.3 --- n = 30 --- p.107 / Chapter B.3 --- Complete Result for Revised Bound Rule --- p.109 / Chapter B.3.1 --- n = 5 --- p.109 / Chapter B.3.2 --- n = 10 --- p.112 / Chapter B.3.3 --- n = 30 --- p.115 / Chapter B.4 --- Complete Result for Revised Branch-and-Bound Algorithm --- p.118 / Chapter B.4.1 --- n = 5 --- p.118 / Chapter B.4.2 --- n = 10 --- p.121 / Chapter B.4.3 --- n = 30 --- p.124 / Bibliography --- p.128

Orientador: Marco Antonio Compagnoni / Banca: Débora Barros Barbosa / Banca: Lucimar Falavinha Vieira / Resumo: O objetivo do presente trabalho foi avaliar a porosidade em bases de resina acrílica de prótese total maxilar, processadas em diferentes ciclos de polimerização e confeccionadas em três espessuras (2,0, 3,5 e 5,0 mm). Cinco grupos foram estabelecidos, de acordo com os ciclos de polimerização: A) Onda-Cryl, ciclo curto em microondas; B) Onda-Cryl, ciclo longo em microondas; C) Onda-Cryl, ciclo do fabricante; T) Clássico, banho de água; Q) Jet, ciclo em câmara de pressão. Após o seu processamento, as bases de resina acrílica foram pesadas em ar e em água e a porcentagem de porosidade foi relacionada com a absorção de água no interior desse material. Os dados de % de porosidade foram submetidos ao teste de Kruskal-Wallis para a comparação entre os grupos (a= 5%). Dentro das limitações do presente estudo, concluiu-se que os ciclos de polimerização e a espessura do espécime de resina acrílica têm influência na porosidade, já que diferenças estatisticamente significantes foram encontradas entre os ciclos e espessuras avaliados. Não houve diferença de porosidade entre as bases de resina polimerizadas no ciclo T para qualquer uma das espessuras. / Abstract: The aim of this study was to evaluate the porosity on (acrylic resin) maxilar complete denture bases, processed through diferent polimerization cycles, procedure done in three different kinds of thickness (2,0, 3,5 e 5,0 mm). Five groups were proposed, according to the polimerization cycles: A) Onda-Cryl, short microwave cycle; B) Onda-Cryl, long microwave cycle; C) Onda-Cryl, manufacturing microwave cycle; T) Clássico, water bath; Q) Jet, press chamber cycle. After the process, the denture bases were weighted in air and in water, and the percent of porosity was related to the water absorption within this material. The porosityþs % data were submitted to the Kruskal-Wallis test to promote the comparison among the groups. In despite of the present paperþs limitations, we have concluded that the polimerization cycles and the specimenþs thickness of acrylic resin really influence the porosity. This result was reached because statistically significant differences were found in the cycles and thickness evaluated. It has been not observed porosity differences in the polimerized resin bases in T cycle in relation to any thickness. / Mestre

As reabilitações por próteses totais são fundamentais para a melhora da qualidade de vida de indivíduos totalmente edentados, pois reconstituem a estética facial e a função mastigatória. Existem hoje no mercado, diferentes tipos de dentes artificiais no que se refere a anatomia da superfície oclusal. Teoricamente, os dentes com cúspides mais altas proporcionariam uma melhor eficiência mastigatória. O objetivo deste estudo foi comparar a eficiência mastigatória de pacientes portadores de próteses totais maxilo-mandibulares, utilizando-se dois tipos de dentes artificiais com cúspides de alturas diferentes. Vinte indivíduos usuários de próteses totais maxilomandibulares foram selecionados. Em um primeiro momento, foram confeccionadas próteses totais com dentes de cúspides mais altas. Quinze dias após as consultas de controle, foram realizados os primeiros testes de eficiência mastigatória com Optocal. Após os testes, novas próteses, agora com dentes de cúspides mais baixas, substituíram as anteriores. Estas próteses foram confeccionadas sobre as duplicatas dos modelos funcionais das primeiras próteses, obtidas utilizando-se ágar específico para esse fim. Quinze dias após as consultas de controle, novos testes foram realizados com os segundos pares de próteses totais. Em ambos os casos, o material cominuído foi tratado e peneirado em uma pilha de peneiras sob vibração. O conteúdo de cada peneira foi pesado e os dados foram tabulados. A média e desvio padrão dos dados dos sujeitos no teste com os dentes de cúpides mais altas foi de 4,1 e 0,76, respectivamente. Enquanto que, no teste com os dentes de cúspides mais baixas foi de 3,83 e 0,95, respectivamente. De acordo com a análise estatística (p<0,05) não houve diferença na eficiência mastigatória com próteses totais maxilo-mandibulares comparando-se dois tipos de dentes artificiais diferentes quanto a altura das cúspides. / The goal of a complete denture rehabilitation, is to achieve better life quality for edentulous individuals, reconstructing the facial aesthetics and the masticatory function. Various artificial teeth with different occlusal anatomy are available in the market. Theoretically, teeth with bigger cuspal heights provide a better masticatory efficiency. The aim of this study was to compare the masticatory efficiency of complete denture wearers with artificial teeth of two cuspal heights. Twenty selected complete denture wearers was given complete dentures with higher cuspal height teeth. Fifteen days after post-insertion consults, the first masticatory efficiency test was taken with Optocal. After the test, a pair of complete dentures with lower cuspal height teeth was given to the subjects, replacing higher cuspal height teeth prosthesis. The complete dentures with lower cuspal height teeth were fabricated by means of duplicating the same rockstone models used for the higher cuspal height teeth complete dentures using agar. Fifteen days after post-insertion consults of the subjects wearing the lower cuspal height teeth, a second masticatory efficiency test was taken with optocal. On booth cases, comminuted material was treated and sieved on a stack of sieves under vibration. The content of each sieve was weighed and the data obtained was tabulated. Mean and standard deviation of subjects masticatory efficiency of complete dentures with higher cuspal height teeth were 4,1 and 0,76 respectively. While tests of complete dentures with lower cuspal height teeth was 3,83 and 0,95 respectively. According to the statistical analysis applied to this study (p<0,05), there were no differences on masticatory efficiency in complete dentures with two different cuspal height teeth.

We consider complete subgraphs of the graph induced by the noncommutativity of a ring, and prove that the graph induced by an infinite noncommutative prime ring contains an infinite complete subgraph. We also compute the clique number and the chromatic number of the graphs induced by some concrete graphs.

Metric spaces, which generalise the properties of commonly-encountered physical and abstract spaces into a mathematical framework, frequently occur in computer science applications. Three major kinds of questions about metric spaces are considered here: the intrinsic dimensionality of a distribution, the maximum number of distance permutations, and the difficulty of reverse similarity search. Intrinsic dimensionality measures the tendency for points to be equidistant, which is diagnostic of high-dimensional spaces. Distance permutations describe the order in which a set of fixed sites appears while moving away from a chosen point; the number of distinct permutations determines the amount of storage space required by some kinds of indexing data structure. Reverse similarity search problems are constraint satisfaction problems derived from distance-based index structures. Their difficulty reveals details of the structure of the space. Theoretical and experimental results are given for these three questions in a wide range of metric spaces, with commentary on the consequences for computer science applications and additional related results where appropriate.