Interplay between different manual toothbrushes and brushing loads on erosive tooth wear.

OBJECTIVE: To investigate the effect of different types of manual toothbrushes and brushing loads on the progression of erosive tooth wear (ETW) on enamel. METHODS: Bovine enamel specimens (n = 10) were submitted to a 5-day erosive-abrasive cycling model (0.3 % citric acid for 5 min, artificial saliva for 60 min, 4x/day). Toothbrushing was carried out 2x/day for 15 s, according to the toothbrushes tested (ultra-soft (a): Curaprox 5460; ultra-soft (b): Sensodyne Repair & Protect; soft (a): Colgate Slim Soft; soft (b): Oral-B Indicator Plus; medium: Johnson's Professional; hard: Tek) and brushing loads (1.5 N, 3 N). Surface loss (SL, in µm) was assessed by optical profilometry on conclusion of the cycling. Some of the toothbrush characteristics were evaluated. Data were statistically analyzed (α = 0.05). RESULTS: For the 1.5 N load, the hard brush showed the highest SL value, with statistical significance. The other toothbrushes did not differ significantly, except that ultra-soft (a) caused significantly higher SL than ultra-soft (b). For the 3 N load, hard and soft (a) exhibited the highest SL. Soft (b) and medium had the lowest SL value, with statistical significance. Only soft (a) and ultra-soft (b) showed significant difference between loads, with lower SL for the load of 1.5 N. None of the toothbrush characteristics were significantly correlated with SL. CONCLUSIONS: Although different degrees of enamel surface loss were observed with use of the different toothbrushes, no association was found between the toothbrush characteristics and SL. Depending on the toothbrush, the force of brushing was capable of modulating the ETW of enamel. Based on the brushing loads usually applied by healthy individuals, hard brushes are not recommended for use by patients with ETW. CLINICAL SIGNIFICANCE: The use of hard bristle brushes is not recommended for use by individuals who exert healthy forces when brushing their teeth. The toothbrush characteristics are of secondary importance in terms of causing enamel loss in ETW.

Evaluation of physical-mechanical properties of self-adhesive versus conventional resin cements

Aim: The purpose of this study was to compare the microhardness, diametral tensile strength, compressive strength and the rheological properties of self-adhesive versus conventional resin cements. Methods: Specimens of a conventional (RelyX ARC) and 3 self-adhesive (RelyX U200, Maxcem Elite, Bifix SE) types of resin cements were prepared. The Knoop test was used to assess the microhardness, using a Microhardness Tester FM 700. For the diametral tensile strength test, a tensile strength was applied at a speed of 0.6 mm/minute. A universal testing machine was used for the analysis of compressive strength and a thermo-controlled oscillating rheometer was used for the Rheology test. One-way ANOVA and Tukey's test (α=0.05) were used for data analysis. Results:According to microhardness analysis, all the cements were statistically similar (p>0.05), except for Maxcem that presented lower hardness compared with the other cements in relation to the top surface (p<0.05). In the diametral tensile strength test, Relyx U200 and RelyX ARC cements were statistically similar (p>0.05), presented higher value when compared to the Maxcem and Bifix cements (p<0.05). The compressive strength of RelyX ARC and Maxcem Elite cements was statistically higher than RelyX U200 and Bifix cements (p<0.05). Regarding the rheology test, Maxcem Elite and RelyX ARC cements showed a high modulus of elasticity. Conclusions: The self-adhesive cements presented poorer mechanical properties than conventional resin cement. Chemical structure and types of monomers employed interfere directly in the mechanical properties of resin cements

Color Stability of Acrylic Resin Teeth After Immersion in Staining Solutions / Análisis del Cambio de Color de Dientes Artificiales Tras Inmersión en Soluciones Colorantes

ABSTRACT: The objective of this study was to evaluate the color alteration of four brands of artificial teeth (Art Plus, Trilux, Bionote and Biolux), after immersion in color solutions of coffee, red wine and urucum. We used 80 artificial teeth, which were standardized with 2 mm thickness. Then, they were subjected to finishing and polishing, and divided into 4 groups (n = 05), which were immersed in one of the 3 types of dye, plus distilled water (control). The samples were immersed daily for 4 hours, then they were removed, washed in tap water, dried with absorbent paper and immersed in distilled water for the subsequent hours in a biological glasshouse at 37 ºC, for 21 days. The evaluation of the color change was made in the periods of 0, 7, 14 and 21 days, by means of the tristimulus colorimeter. The data were subjected to the ANOVA and Tukey test with a 5 % significance. The results showed that the urucum was the substance that caused the greatest staining while the coffee and the wine did not show statistical difference. Regarding trademarks, Trilux presented a statistical difference compared to the other commercial brands, revealing colorimetric alteration only in the 14-day period. It was concluded that the composition of the artificial teeth, the type of pigmenting agent and the immersion time determine the color change.

RESUMEN: El objetivo de este estudio fue evaluar la alteración de color de cuatro marcas de dientes artificiales (Art Plus, Trilux, Bionote y Biolux), después de inmersión en soluciones colorantes de café, vino tinto y urucum. Se utilizaron 80 dientes artificiales, los cuales fueron estandarizados con 2 mm de espesor. En seguida, los mismos fueron sometidos al acabado y pulido, y divididos en 4 grupos (n = 5), los cuales fueron inmersos en uno de los 3 tipos de colorante, más agua destilada (control). Las muestras permanecieron inmersas diariamente durante 4 horas, luego fueron retiradas, lavadas en agua corriente, secas con papel absorbente e inmersas en agua destilada por las horas subsiguientes en invernadero biológico a 37 ºC, por 21 días. La evaluación del cambio de color se realizó en los períodos de 0, 7, 14 y 21 días, por medio del colorímetro tristimulo. Los datos fueron sometidos a la prueba ANOVA y Tukey con un 5 % de significancia. Los resultados demostraron que el urucum fue la sustancia que provocó mayor manchado mientras que el café y el vino no presentaron diferencia estadística. En cuanto a las marcas comerciales, el Trilux presentó una diferencia estadística en comparación con las otras marcas comerciales, revelando alteración colorimétrica sólo en el período de 14 días. Se concluyó que la composición de los dientes artificiales, el tipo de agente pigmentante y el tiempo de inmersión determinan el cambio de color.

Chemical and Mechanical Properties of Experimental Dental Composites as a Function of Formulation and Postcuring Thermal Treatment.

This study evaluated the influence of formulation and thermal treatment on the degree of conversion, fracture toughness, flexural strength, and elastic modulus of experimental composites. Six composites were analyzed at BisGMA : TEGDMA molar ratios of 1 : 1 and 7 : 3 with filler at 30, 50, and 70 wt%. The degree of conversion was analyzed by Fourier transform infrared spectroscopy, fracture toughness was measured using the single-edge notched beam, and flexural strength and elastic modulus were measured with the 3-point bend test. For all tests, one-half of the specimens received thermal treatment at 170°C for 10 min. Data were analyzed by the Kruskal-Wallis or ANOVA/Tukey's test (α = 5%). The 1 : 1 BisGMA : TEGDMA ratio showed higher properties than the 7 : 3 ratio. Although the material with 70% filler had a conversion lower than the one with 50%, it showed higher mechanical properties. The thermal treatment improved all properties in all materials. Therefore, the use of an equimolar ratio of BisGMA : TEGDMA can be paired with 70 wt% filler to design dental composites that possess increased advantageous physical and chemical properties. Furthermore, the simple and low-cost method of thermal treatment proposed for use in clinical dentistry has been shown to effectively improve the properties of all evaluated materials.

Isolation of Candida spp. from denture-related stomatitis in Pará, Brazil

ABSTRACT The aim of this study was to isolate and identify Candida species from the oral cavity of denture wearers with denture-related stomatitis who were attended at the University Federal of Pará (Belém City, Pará State, Brazil). A total of 36 denture wearers with denture-related stomatitis were included, and type I (50%), type II (33%) and type III (17%) stomatitis were observed. Candida spp. were isolated from 89% of the cases and included five different Candida species. C. albicans was the most frequently recovered species (78% of the cases), followed by C. famata and C. tropicalis. We observed a significant association between Candida species isolation and unsatisfactory denture condition (p = 0.0017). Our results demonstrated the highly frequency of Candida species isolation in denture wearers with denture-related stomatitis and showed the relationship between these species and poor denture maintenance.

Isolation of Candida spp. from denture-related stomatitis in Pará, Brazil.

The aim of this study was to isolate and identify Candida species from the oral cavity of denture wearers with denture-related stomatitis who were attended at the University Federal of Pará (Belém City, Pará State, Brazil). A total of 36 denture wearers with denture-related stomatitis were included, and type I (50%), type II (33%) and type III (17%) stomatitis were observed. Candida spp. were isolated from 89% of the cases and included five different Candida species. C. albicans was the most frequently recovered species (78% of the cases), followed by C. famata and C. tropicalis. We observed a significant association between Candida species isolation and unsatisfactory denture condition (p=0.0017). Our results demonstrated the highly frequency of Candida species isolation in denture wearers with denture-related stomatitis and showed the relationship between these species and poor denture maintenance.

Effect of 10% Strontium Chloride and 5% Potassium Nitrate with Fluoride on Bleached Bovine Enamel.

BACKGROUND: Dental whitening has been increasingly sought out to improve dental aesthetics, but may cause chemical and morphological changes in dental enamel surfaces. OBJECTIVE: This study evaluated in vitro the effect of 10% strontium chloride and 5% potassium nitrate with fluoride on bovine enamel, through tristimulus colorimetry, Knoop microhardness (KHN), and roughness after bleaching with 35% hydrogen peroxide (HP). METHODS: The specimens were divided into three groups (n=15): GControl received bleaching treatment with 35% HP; GNitrate received bleaching with 35% HP followed by the application of 5% potassium nitrate with 2% sodium fluoride; and GStrontium received bleaching with 35% HP followed by the application of 10% strontium chloride on the enamel. Next, five specimens of each experimental group were subjected to KHN and tristimulus colorimetry tests, and 10 specimens were subjected to surface roughness (SR) tests. The values obtained for the different groups were compared through analysis of variance (ANOVA) followed by a post-hoc Tukey-Kramer test in addition to Student's T-test for paired data. RESULTS: In the intergroup comparison, KHN final differed statistically (p<0.05). The mean SR final of the experimental groups differed statistically from the GControl group (p<0.05). In addition, the groups did not differ in color variation (p>0.05). CONCLUSION: 10% strontium chloride and 5% potassium nitrate combined with 2% fluoride downplayed morphological changes to the enamel, without interfering with the effectiveness of the bleaching process.

Chemical Composition and Microhardness of Human Enamel Treated with Fluoridated Whintening Agents. A Study in Situ.

BACKGROUND: Dental whitening has been increasingly sought out to improve dental aesthetics, but may cause chemical and morphological changes in dental enamel surfaces. OBJECTIVE: Assess in situ the effects of high-concentration hydrogen peroxide with and without fluoride on human dental enamel using the ion chromatography test (IC) and the Knoop hardness test (KHN). MATERIAL AND METHODS: Nineteen enamel specimens were prepared using third human molars. These specimens were fixed on molars of volunteers and were divided into groups: OP38-Opalescence Boost PF38%, PO37-Pola Office 37.5% and CO-Control group. For chemical analysis (n= 3), the dentin layer was removed, keeping only the enamel, which was subjected to acidic digestion by microwave radiation. It was necessary to perform sample dilutions for the elements fluorine (F), calcium (Ca) and phosphorus (P) for quantification using the IC test. The KHN (n= 5) was performed before and after the treatments. Five indentations were made, separated by 100 µm, for each specimen using a load of 25 gf for 5 seconds in the microdurometer. The data were analyzed using ANOVA with a 5% significance level. RESULTS: The OP38 group had the largest concentrations of F, Ca and P ions. The PO37 group showed the lowest concentrations of F and Ca ions. The average KHN was not significantly different between the OP38 and PO37 groups. CONCLUSION: Enamel whitened with hydrogen peroxide containing fluoride had greater concentrations of F, Ca and P ions. The presence of fluoride in the whitening agent did not influence the enamel microhardness.

Effects of Internal Bleaching on the Adhesion of Glass-Fiber Posts.

OBJECTIVE: We evaluated the effects of internal bleaching on the adhesion of glass-fiber posts (GFPs) luted with different resin cements. METHODS: Forty extracted human single-root teeth were endodontically treated and divided into four groups (n=10): G1- conventional resin cement (CRC); G2- self-adhesive resin cement (SARC); G3- bleaching + CRC; and G4- bleaching + SARC. Specimens were sectioned transversally into three slices to perform the push-out test at the coronal, middle and apical regions of the root canals. Data were analyzed using analysis of variance and Tukey's test (p<0.05). RESULTS: The push-out bond strength of GFPs luted with SARC after bleaching (G4) was significantly lower than that of the other groups (p<0.001). We found no statistically significant differences in push-out bond strength among the other groups. SIGNIFICANCE: Internal bleaching reduced the adhesion of GFPs luted with SARC. The adhesion of GFPs luted with CRC was not decreased after bleaching.

Relationship among local and functional factors in the development of denture stomatitis in denture wearers in northern Brazil / Relação entre fatores locais e funcionais no desenvolvimento de estomatite protética em usuários de dentadura no norte do Brasil

Objective: The aim of this study was to evaluate the relationship among functional and qualitative factors in the development of denture stomatitis (DS) (according to Newton's classification) in acrylic-based denture wearers residents from northern Brazil. Material and Method: A total of 99 patients who wore partial or total acrylic resin-based upper dentures were included in this study. The subjects completed an epidemiological data form that includes the patient's gender, age, local factors (hygiene habits, remove denture to sleep, use of mouthwash, present condition of the denture, age of the denture) and functional factors (vertical dimension at rest, vertical dimension of occlusion, occlusion, retention, and static and dynamic stability). To detect yeasts, samples were collected from the inner surface of the dentures and from the palatal mucosa in contact with it. Subsequently, the samples were cultured on Sabouraud dextrose agar, observing macro and microscopic characteristics. Result: In the present study, we did not find any significant relationship between the gender and disease onset. Based on the Newton classification, 36.3% of the patients presented with DS and 89.0% were colonized by yeasts; of these subjects, 50% had type I lesions, 33.3% had type II lesions, and 16.6% had type III lesions. All of the qualitative and local factors, except the use of mouthwash, were clinically relevant to the development of disease. Conclusion: Denture stomatitis in denture users in northern Brazil was multifactorial, involving local, functional and microbiological factors. .

Objetivo: O objetivo deste estudo foi avaliar a relação entre fatores funcionais e qualitativos no desenvolvimento da estomatite protética (EP) (de acordo com a classificação de Newton) em usuários de dentadura acrílica residentes no norte do Brasil. Material e Método: Um total de 99 pacientes, que usavam dentadura superior de resina acrílica parcial ou total, foi incluído neste estudo. Os participantes preencheram um formulário de dados epidemiológicos, que incluiu gênero, idade, fatores locais (hábitos de higiene, retirar a dentadura ao dormir, uso de colutório, condição atual da dentadura, idade da dentadura) e fatores funcionais (dimensão vertical de repouso, dimensão vertical de oclusão, oclusão, retenção, estabilidade estática e dinâmica). Para detectar leveduras, amostras foram coletadas da superfície interna da dentadura e da mucosa palatal em contato com esta. Posteriormente, as amostras foram cultivadas em ágar Sabouraud dextrose, observando-se características macro e microscópicas. Resultado: No presente estudo, não foi encontrada relação significante entre gênero e início da doença. Baseada na classificação de Newton, 36,3% dos pacientes apresentaram EP e 89,0% foram colonizados por leveduras; destes indivíduos, 50% tiveram lesões tipo I, 33,3% tiveram lesões tipo II e 16,6% tiveram lesões tipo III. Todos os fatores locais e qualitativos, exceto o uso de colutório, foram clinicamente relevantes para o desenvolvimento da doença. Conclusão: Estomatite protética em usuários de dentadura do norte do Brasil foi multifatorial, associando fatores locais, funcionais e microbiológicos. .

Effects of Rosmarinus officinalis essential oil on germ tube formation by Candida albicans isolated from denture wearers.

INTRODUCTION: The aim of this study was to investigate the effects of Rosmarinus officinalis essential oil on germ tube formation by Candida albicans isolated from denture wearers. METHODS: Ten C. albicans isolates recovered from denture wearers were tested using 10% fetal bovine serum with or without 4% R. officinalis essential oil. RESULTS: The essential oil from R. officinalis completely inhibited germ tube formation in the investigated C. albicans isolates. CONCLUSIONS: The results demonstrate that the essential oil of R. officinalis modulates C. albicans pathogenicity through its primary virulence factor (i.e., germ tube formation was suppressed).

Influência da composição da matriz orgânica, conteúdo inorgânico e tratamento térmico sobre diferentes propriedades de compósitos experimentais / Influence of composition of the organic matrix, filler content and thermic treatment on different properties of experimental composites

Objetivo: Analisar a influência da matriz orgânica, do conteúdo inorgânico e do tratamento térmico (TT) sobre diferentes propriedades de compósitos experimentais, tais como o grau de conversão (GC), tenacidade à fratura (KIC), resistência à flexão (RF) e módulo de elasticidade (ME). Métodos: Para o experimento foram analisadas seis formulações de compósitos experimentais com proporções molares de Bis-GMA:TEGDMA de 5:5 e 7:3, a carga utilizada foi o vidro de bário, nas concentrações de 30, 50 e 70% em peso, e os fotoiniciadores a amina e canforoquinona. O GC foi analisado através da espectroscopia no infra-vermelho (FTIR) (n=5). A KlC foi avaliada pelo método single-edge notched beam (SENB). As imagens das superfícies de fratura foram capturadas por um estereomicroscópio e a KlC calculada (n=10). A análise da RF e ME foi realizada através do teste dos três pontos (n=10). Para todos os fatores de variação estudados, metade dos espécimes imediatamente após à confecção receberam TT em estufa convencional, a 170º C por 10 minutos e a outra metade não. Após 24 horas, as amostras foram destinadas de acordo com os ensaios realizados...

Objective: To analyze the influence of organic matrix, the inorganic content and thermic treatment (TT) on different properties of experimental composites, such as the degree of conversion (DC), fracture toughness (KIC), flexural strength (FS) and elastic modulus (EM). Methods: This experiment analyzed six formulations of experimental composites with 5:5 and 7:3 molar proportions of Bis-GMA: TEGDMA. The load used was barium glass at concentrations of 30, 50 and 70% by weight and the photoinitiators, camphorquinone and amine. GC was analyzed by infrared spectroscopy (FTIR) (n=5). The KIC was evaluated by a "single-edge notched beam" (SENB). The images of the fracture surfaces were captured by a stereomicroscope and KIC calculated (n=10). The analysis FS and EM were performed by testing three points (n=10). For all the variation factors studied, half of the specimens immediately after the preparation received TT in conventional oven at 170º C for 10 minutes and the other half not. After 24 hours, the samples were designed according to the tests. Data were analyzed using ANOVA/Tukey the degree of conversion, fracture toughness and flexural strength, and Kruskal-Wallis test for the elastic modulus (=5%). Results: Analysis of GC (%) statistical significance was observed for the three variation factors analyzed individually (monomer, filler and TT), as well as for the interaction monomer x TT (p <0.001). For KIC and FS, significant changes were observed only in the three variation factors (monomer, filler and TT) analyzed individually (p<0.001). For EM, the individual factors (monomer, filler and TT) TT x filler interaction showed statistical significance (p <0.001), as well as the monomer x filler interaction (p = 0.001). Conclusions: The organic matrix and inorganic content of experimental composites influenced the GC, KIC, FS and EM, and the TT caused improvements in the properties studied.

Análise da eficácia antimicrobiana dos alginatos autodesinfetantes / Antimicrobial efficacy analysis and autodisinfectant alginates effectiveness

Objetivos: Avaliar in vitro a efetividade antimicrobiana dos alginatos autodesinfetantes quando comparados aos alginatos convencionais, às soluções desinfetantes de hipoclorito de sódio a 1 % e clorexidina a 2%. Métodos: O método da difusão em ágar foi empregado; microorganismos utilizados para o ensaio experimental foram o Streptococcus mutans e Staphylococcus aureus. Resultados: Uma marcante diferença entre os alginatos foi encontrada. O hidrocolóide irreversível contendo clorexidina, as soluções de hipoclorito de sódio a 1 % e clorexidina a 2% exibiram atividade antimicrobiana para os Streptococcus mutans. Conclusão: No entanto, somente as soluções de hipoclorito de sódio a 1 % e clorexidina a 2% exibiram eficácia quanto a ação antimicrobiana para os Staphylococcus aureus, tendo o alginato autodesinfetante se mostrado resistente para este tipo de microorganismo.

Biossegurança em prótese dentária: proposta de protocolo. Parte III / Dental prosthetic biosecurity: protocol proposal. Part III

Com o advento de determinadas patologias, entre as quais a AIDS, os cirurgiões-dentistas passaram a ter conhecimento básico sobre a biossegurança em prótese dentária, valorizando o controle de infecção cruzada. Porém, nem todos receberam informações suficientes para exercer com segurança medidas de controle de transmissão de doenças infecto-contagiosas por meio de uma sequência clínica de biossegurança. Este estudo se propõe a elaborar um protocolo clínico, orientando os profissionais nas atitudes que deverão ter com relação à desinfecção dos trabalhos protéticos, reduzindo as possibilidades de transmissão destas doenças nos consultórios odontológicos

Efeitos do treinamento pliométrico sobre a musculatura rotadora medial e lateral do ombro em mulheres / The effects of plyometric training on the shoulder medial and lateral rotators muscles in women

O objetivo deste estudo foi avaliar o ganho de força e potência dos músculos rotadores mediais e laterais do ombro dominante após treinamento pliométrico. Foram avaliadas 10 voluntárias sedentárias que não apresentavam acometimento músculo-esquelético. Todas as voluntárias foram submetidas a uma avaliação física e a uma avaliação isocinética para os movimentos de rotação do ombro dominante, por meio do aparelho isocinético Cybex Norm. Posteriormente, a metade da amostra foi submetida a um programa de treinamento pliométrico para os movimentos de rotação do ombro dominante e a outra metade da amostra formou o grupo controle; após o término do treinamento, as voluntárias sofreram uma nova avaliação isocinética. Os resultados foram analisados estatisticamente utilizando-se o teste t-student não pareado, considerando significantes aqueles com p ≤ 0,05. Os resultados mostraram aumento da força para a musculatura rotadora lateral e aumento de força e potência da musculatura rotadora medial após treinamento pliométrico. Concluímos que o treinamento pliométrico é eficaz para o ganho de força da musculatura rotadora medial e lateral do ombro e, não é tão eficaz para o ganho de potência, apresentando apenas um aumento desta última para a musculatura rotadora medial do ombro dominante.

The objective of this study was to evaluate the increase of force and potency of the muscles medial and lateral rotators of the dominant shoulder after plyometric training. They were appraised 10 sedentary volunteers that they did not present muscle-skeletal attack. All the volunteers were submitted to a physical evaluation and an isokinetic evaluation for the movements of rotation of the dominant shoulder, through the isokinetic apparel Cybex Norm. Later, half of the sample was submitted to a program of plyometric training for the movements of rotation of the dominant shoulder and the other half of the sample composed the control group; after the end of the training, the volunteers suffered a new isokinetic evaluation. The results were statistical analyzed using the test t-student, considering significant those with p ≤ 0,05. The results showed increase of the force for the musculature lateral rotator and increase of force and potency of the musculature medial rotator after plyometric training. We concluded that the plyometric training is effective for the increase of strength of shoulder medial and lateral rotator muscle and, it is not so effective for the potency increase, just presenting an increase of this last one for the medial rotator muscle of the dominant shoulder.

Biossegurança em prótese dentária: proposta de protocolo. Parte II / Dental prosthetic biosecurity: protocol proposal. Part II

A prevenção e o controle de infecção cruzada no consultório odontológico é de suma importância, em virtude da possibilidade de transmissão de microorganismos durante todas as etapas clínicas e laboratoriais que envolvem a confecção das próteses dentárias. O objetivo deste trabalho é elaborar um protocolo clínico, com o intuito de esclarecer, junto aos profissionais, como proceder a desinfecção dos materiais protéticos por meio de uma sequência clínica de biossegurança

Reabilitação oral em paciente com desgastes dentários e perda da dimensão vertical: relato de um caso clínico / Oral rehabilitation of a patient with tooth wear and vertical dimension lost: clinical case report

Este trabalho relata o caso clínico de uma paciente, com 50 anos de idade, que apresentava desgastes dentários e perda de dimensão vertical decorrentes de hábito parafuncional. A reabilitação foi realizada por meio da recuperação da dimensão vertical com a utilização de overlays provisórias, reconstrução dos dentes desgastados com resina composta e pinos intradentinários e, finalmente, a confecção de PPR definitiva e placa interoclusal

Artglass - Propriedades e aplicações Clínicas / Artglass - Proprieties and clinical applications

Atualmente, ocorre uma intensa mudança de parâmetros seguros de indicação clínica de alguns materiais restauradores. Dentro desta realidade de alterações rápidas, podemos encontrar o Artglass, uma resina composta laboratorialmente que combina estética e durabilidade da porcelana convencional, apresenta facilidade de manuseio e favorece a fase de ajustes estéticos. O presente trabalho tem como objetivo expor as propriedades e aplicações clínicas deste material

Prevalência das lesões bucais em usuários de próteses removíveis / Prevalence of buccal lesions in removable denture wearers

O objetivo deste estudo foi avaliar a presença de lesões na mucosa oral de pacientes portadores de próteses removíveis de três instituições, bem como estudar o tempo e a forma de uso das próteses. Foram avaliados 103 pacientes, dos quais 82 eram usuários de próteses removíveis. Do total de 82 pacientes exminados, 63,41% apresentaram algum tipo de lesão de mucosa. No gênero feminino, 66,2% demonstraram algum tipo de lesão, enquanto que no gênero masculino, 45,45% apresentavam algum tipo de lesão, não sendo significante estatisticamente. Os tipos de lesões encontradas foram, em ordem decrescente, a estomatite protética, em 36,58%; a hiperplasia papilomatosa inflamatória, em 19,51%; a úlcera traumática, em 13,41%; a queilite angular, em 9,75%; a hiperplasia fibrosa inflamatória e o rebordo flácido, em 7,32%. Observou-se importante relação entre a forma de uso contínuo do aparelho e a presença de tais patologias, com exceção da queilite angular

Colagem autógena de dente anterior fraturado - Caso clínico / Autogenous dental bonding of fractured anterior tooth - clinical case

As técnicas de colagem de fragmento dental representam um grande marco na ciência e arte de restaurar dentes anteriores, permitindo o aproveitamento do próprio elemento dental fraturado, proporcionando vantagens sobre restaurações com resina composta, como, por exemplo, a estética (devolução da cor original do dente e da forma) e função (manutenção da guia incisal). É propósito do presente trabalho relatar um caso clínico em que é realizado um procedimento de colagem autógena de um fragmento dental para recuperar estética e, funcionalmente, um incisivo central superiror com diagnóstico de fratura coronária no 1/3 médio da coroa.