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[PMID]:26852001
[Au] Autor:Ferreira AF; Perez FM; Limeira Júnior Fde A; de Moura Mde F; de Sousa FB
[Ad] Endereço:Master Program in Dentistry, Health Sciences Center, Federal University of Pernambuco, Av. Prof. Moraes Rego 1235, 50670-901 Recife, Pernambuco, Brazil.
[Ti] Título:Graded changes in enamel component volumes resulted from a short tooth bleaching procedure.
[So] Source:Arch Oral Biol;65:52-8, 2016 May.
[Is] ISSN:1879-1506
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:AIM: To test the hypothesis that changes in enamel component volumes (mineral, organic, and water volumes, and permeability) are graded from outer to inner enamel after a short bleaching procedure. MATERIALS AND METHODS: Extracted unerupted human third molars had half of their crowns bleached (single bleaching session, 3 × 15 min), and tooth shade changes in bleached parts were analyzed with a spectrophotometer. Ground sections were prepared, component volumes and permeability were quantified at histological points located at varying distances from the enamel surface (n=10 points/location), representing conditions before and after bleaching. RESULTS: Tooth shade changes were significant (p<0.001; 95% CI=-1/-8; power=99%), and most of the enamel layer was unaffected after bleaching, except at the outer layers. Multiple analysis of covariances revealed that most of the variance of the change in enamel composition after bleaching was explained by the combination of the set of types of component volume (in decreasing order of relevance: mineral loss, organic gain, water gain, and decrease in permeability) with the set of distances from the enamel surface (graded from the enamel surface inward) (canonical R(2)=0.97; p<0.0001; power>99%). CONCLUSIONS: Changes in enamel composition after a short bleaching procedure followed a gradient within component volumes (mineral loss>organic gain>water gain>decrease in permeability) and decreased from the enamel surface inward.
[Mh] Termos MeSH primário: Esmalte Dentário/química
Esmalte Dentário/efeitos dos fármacos
Clareamento Dental/efeitos adversos
[Mh] Termos MeSH secundário: Esmalte Dentário/citologia
Dureza/efeitos dos fármacos
Seres Humanos
Peróxido de Hidrogênio/farmacologia
Microscopia Eletrônica de Varredura
Microscopia de Polarização
Minerais/análise
Dente Serotino/efeitos dos fármacos
Espectrofotometria/métodos
Propriedades de Superfície
Clareamento Dental/métodos
Clareadores Dentários/farmacologia
Desmineralização do Dente
Permeabilidade Dentária/efeitos dos fármacos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Minerals); 0 (Tooth Bleaching Agents); BBX060AN9V (Hydrogen Peroxide)
[Em] Mês de entrada:1701
[Cu] Atualização por classe:170123
[Lr] Data última revisão:
170123
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:160208
[St] Status:MEDLINE


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[PMID]:24993262
[Au] Autor:Attin T; Wegehaupt FJ
[Ad] Endereço:Center for Dental Medicine, Clinic for Preventive Dentistry, Periodontology and Cariology, University of Zurich, Zurich, Switzerland.
[Ti] Título:Methods for assessment of dental erosion.
[So] Source:Monogr Oral Sci;25:123-42, 2014.
[Is] ISSN:0077-0892
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:Various assessment techniques have been applied to evaluate the loss of dental hard tissue and the surface-softened zone in enamel induced by erosive challenges. In this chapter, the most frequently adopted techniques for analyzing the erosively altered dental hard tissues are reviewed, such as profilometry, measuring microscope techniques, microradiography, scanning electron microscopy, atom force microscopy, nano- and microhardness tests and iodide permeability test. Moreover, methods for chemical analysis of minerals dissolved from dental hard tissue are discussed. It becomes evident that the complex nature of erosive mineral loss and dissolution might not be comprehended by a single technique, but needs application of different approaches for full understanding.
[Mh] Termos MeSH primário: Erosão Dentária/diagnóstico
[Mh] Termos MeSH secundário: Testes de Dureza
Seres Humanos
Iodetos
Microrradiografia
Microscopia
Microscopia de Força Atômica
Microscopia Eletrônica de Varredura
Minerais/análise
Imagem Óptica
Espectrometria por Raios X
Erosão Dentária/patologia
Permeabilidade Dentária/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (Iodides); 0 (Minerals)
[Em] Mês de entrada:1409
[Cu] Atualização por classe:151119
[Lr] Data última revisão:
151119
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:140705
[St] Status:MEDLINE
[do] DOI:10.1159/000360355


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[PMID]:24909461
[Au] Autor:Bulbul M; Altintas SH; Tak O; Secilmis A; Yasar A; Usumez A
[Ad] Endereço:Departments of Prosthodontics, Faculty of Dentistry, University of Gaziantep, Gaziantep, Turkey.
[Ti] Título:Effect of dentin desensitizing procedures on methyl methacrylate diffusion through dentin.
[So] Source:Niger J Clin Pract;17(4):407-12, 2014 Jul-Aug.
[Is] ISSN:1119-3077
[Cp] País de publicação:India
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Acrylic and bisacryl resins are widely used both during the temporization phase as well as for provisional restorations and the effect of external agents on dentin sensitivity can be reduced by the obliteration of the tubules. OBJECTIVE: The purpose of this study was to evaluate diffusion of methyl methacrylate monomer through dentin by high performance liquid chromatography (HPLC) after three different desensitizing procedures during the fabrication of two different provisional crown materials. MATERIALS AND METHODS: Forty extracted restoration and caries free human premolar teeth were used in this study. Thermoplastic vacuum formed material was used as a matrix to fabricate provisional restorations for each tooth before crown preparation. Teeth were prepared for a metal supported ceramic crown with 1 mm shoulder margins and then crown parts were separated from cementoenamel junction with a carborundum disk perpendicular to the long axis of the teeth. To the cementoenamel junction of each tooth a polypropylene chamber was attached that contains 1.5 cm 3 of deionized distilled water. Prepared teeth were divided into four groups ( n = 10) including control, desensitizing agent (DA) application, neodymium-doped yttrium aluminum garnet (Nd: YAG) laser irradiation (LI), and LI after DA application groups. After application of DA (except control) each group were divided into two subgroups for fabrication of provisional restorations ( n = 5). Two autopolymerizing provisional materials (Imident (Imicryl) and Systemp C and B (Ivoclar, vivadent)) were used to fabricate provisional restorations using the strips. Water elutes were analyzed by HPLC at 10 min and 24 h. RESULTS: The monomer diffusion values varied statistically according to desensitizing procedures, provisional resin systems, and the time periods. Monomer diffusion through dentin surfaces desensitized with Nd: YAG LI after DA application was the lowest. CONCLUSIONS: Nd: YAG LI in association with DA application is an effective combination to eliminate monomer diffusion through dentin to pulpal chamber.
[Mh] Termos MeSH primário: Modelos Dentários
Dentina/química
Dentina/efeitos dos fármacos
Metilmetacrilato/química
Metilmetacrilato/farmacologia
Permeabilidade Dentária/efeitos dos fármacos
[Mh] Termos MeSH secundário: Análise de Variância
Dente Pré-Molar/química
Dentina/ultraestrutura
Sensibilidade da Dentina
Difusão
Seres Humanos
Lasers de Estado Sólido
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
196OC77688 (Methylmethacrylate)
[Em] Mês de entrada:1409
[Cu] Atualização por classe:140609
[Lr] Data última revisão:
140609
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140610
[St] Status:MEDLINE
[do] DOI:10.4103/1119-3077.133970


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Ambrosano, Gláucia Maria Bovi
[PMID]:23649584
[Au] Autor:Berger SB; Tabchoury CP; Ambrosano GM; Giannini M
[Ad] Endereço:Department of Restorative Dentistry, School of Dentistry, University of North Parana, Londrina, Brazil.
[Ti] Título:Hydrogen peroxide penetration into the pulp chamber and dental permeability after bleaching.
[So] Source:Gen Dent;61(3):e21-5, 2013 May-Jun.
[Is] ISSN:0363-6771
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:This study sought to quantify the concentration of hydrogen peroxide (HP) in the pulp chamber and evaluate changes on dental permeability after bleaching with 3 HP concentrations (10%, 35%, and 50%). This study was divided into 2 experiments and the bleaching treatments consisted of 3 applications of HP for 30 minutes during a single session. The first experiment tested HP penetration into the pulp chamber of 4 experimental groups (n = 10) of bovine crowns, which were divided by HP concentration: an unbleached control group (0% HP), 10% HP, 35% HP, and 50% HP. Acetate buffer solution was placed into the pulp chamber and after each application of HP. This solution was collected to determine spectrophotometrically the concentration of HP that reached the pulp chamber. The second experiment evaluated dental permeability. Bovine crowns were divided into 3 groups (n = 10). The crowns were connected to a permeability device and the initial permeability was measured at 10 psi. Three different concentrations of HP gels (10%, 35% and 50%) were applied to the buccal enamel surfaces and the dental permeability was measured after the first, second, and third applications of HP. The data were analyzed by 2-way ANOVA and Tukey test (P ≤ 0.05). All concentrations of HP reached the pulp chamber, although no significant differences were noted between the 3 concentrations tested (P > 0.05). However, the increase of dental permeability in the group that received 50% HP was significantly higher than the 10% HP group (P < 0.05). The results indicate that the HP bleaching treatments increased dental permeability.
[Mh] Termos MeSH primário: Cavidade Pulpar/metabolismo
Peróxido de Hidrogênio/farmacocinética
Clareadores Dentários/farmacocinética
Permeabilidade Dentária/efeitos dos fármacos
[Mh] Termos MeSH secundário: Animais
Bovinos
Esmalte Dentário/efeitos dos fármacos
Esmalte Dentário/metabolismo
Permeabilidade do Esmalte Dentário/efeitos dos fármacos
Cavidade Pulpar/efeitos dos fármacos
Dentina/efeitos dos fármacos
Dentina/metabolismo
Permeabilidade da Dentina/efeitos dos fármacos
Corantes Fluorescentes
Violeta de Genciana
Peróxido de Hidrogênio/administração & dosagem
Peróxido de Hidrogênio/farmacologia
Distribuição Aleatória
Espectrofotometria/métodos
Fatores de Tempo
Clareadores Dentários/administração & dosagem
Clareadores Dentários/farmacologia
Coroa do Dente/efeitos dos fármacos
Coroa do Dente/metabolismo
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Fluorescent Dyes); 0 (Tooth Bleaching Agents); 0 (leucocrystal violet); BBX060AN9V (Hydrogen Peroxide); J4Z741D6O5 (Gentian Violet)
[Em] Mês de entrada:1404
[Cu] Atualização por classe:151119
[Lr] Data última revisão:
151119
[Sb] Subgrupo de revista:D
[Da] Data de entrada para processamento:130508
[St] Status:MEDLINE


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Corona, Silmara Aparecida Milori
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[PMID]:22889179
[Au] Autor:Scatolin RS; Galo R; Corona SA
[Ad] Endereço:Department of Restorative Dentistry, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto-SP, Brazil. mddavidk@dreamwiz.com
[Ti] Título:In situ effect of dentifrices associated to CO2 laser in the permeability of eroded root dentin.
[So] Source:Photomed Laser Surg;30(10):573-8, 2012 Oct.
[Is] ISSN:1557-8550
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: The aim of this study was to evaluate, through a crossover 2×2 in situ trial, the effect of a desensitizing dentifrice associated with CO2 laser irradiation to control the permeability of eroded root dentin. BACKGROUND DATA: Facing the increased prevalence of erosive lesion and the need for preventive means to control painful symptoms related to them. METHODS: Eighty slabs of bovine root dentin were subjected to initial erosive challenge (citric acid 0.3%, 2 h), followed by a remineralizing period in artificial saliva (24 h). Specimens were then divided according to dentin treatment: desensitizing dentifrice, desensitizing dentifrice+CO2 laser, fluoride anticavity dentifrice. and fluoride anticavity dentifrice+CO2 laser. After a 2-day lead-in period, 10 volunteers wore an intraoral palatal appliance containing four root dentin slabs, in two phases of 5 days each. During the intraoral phase, one side of the appliance was immersed in 0.3% citric acid, and the opposite side was immersed in deionized water, four times a day. One hour after the immersions, all specimens were brushed with dentifrice slurry provided by the researcher. After a 7-day washout period, volunteers were crossed over on the different dentifrice group. Each phase having been completed, the specimens were evaluated for permeability through an optical microscope. RESULTS: Data were analyzed using ANOVA and no significant difference (p=0.272) was found between the surface treatments performed on bovine root dentin. CONCLUSIONS: It can be concluded that fluoride anticavity or desensitizing dentifrice, regardless of the association with the CO2 laser irradiation, was able to control the permeability of eroded root dentin.
[Mh] Termos MeSH primário: Dentifrícios/farmacologia
Dentina/efeitos dos fármacos
Dentina/efeitos da radiação
Lasers de Gás/uso terapêutico
Erosão Dentária/prevenção & controle
Permeabilidade Dentária/efeitos dos fármacos
Permeabilidade Dentária/efeitos da radiação
[Mh] Termos MeSH secundário: Adulto
Animais
Bovinos
Ácido Cítrico/farmacologia
Estudos Cross-Over
Dentina/metabolismo
Dentina/patologia
Dessensibilizantes Dentinários/farmacologia
Método Duplo-Cego
Feminino
Seres Humanos
Masculino
Meia-Idade
Permeabilidade
Sensibilidade e Especificidade
Fluoreto de Sódio/farmacologia
Raiz Dentária/efeitos dos fármacos
Raiz Dentária/efeitos da radiação
Adulto Jovem
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Dentifrices); 0 (Dentin Desensitizing Agents); 2968PHW8QP (Citric Acid); 8ZYQ1474W7 (Sodium Fluoride)
[Em] Mês de entrada:1311
[Cu] Atualização por classe:140731
[Lr] Data última revisão:
140731
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:120815
[St] Status:MEDLINE
[do] DOI:10.1089/pho.2012.3290


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[PMID]:19436251
[Au] Autor:Testarelli L; Milana V; Rizzo F; Gagliani M; Gambarini G
[Ad] Endereço:Department of Dental Sciences, La Sapienza University, Rome, Italy.
[Ti] Título:Sealing ability of a new carrier-based obturating material.
[So] Source:Minerva Stomatol;58(5):217-24, 2009 May.
[Is] ISSN:0026-4970
[Cp] País de publicação:Italy
[La] Idioma:eng
[Ab] Resumo:AIM: The aim of the present study was to investigate the in vitro sealing ability of a new obturating material (Real Seal 1, SybronEndo, Orange, CA, USA) and compare it with the Thermafil (Dentsply Maillefer, Baillargues, Switzerland) and One-Step systems (CMS Dental, Copenhagen, Denmark). METHODS: Forty-four freshly extracted lower premolars teeth were selected and a root canal treatment was performed using a crown-down Nickel-Titanium rotary preparation technique. Teeth were randomized into three groups (N.=14): 1) Thermafil group; 2) One/step group; 3) Real Seal 1 (RS1) group. The remaining two teeth served as controls. A fluid filtration system device was utilized to assess quantitatively the microleakage. Statistical analyses were performed by ANOVA and significance was set at 95%. RESULTS: Data clearly showed that the RS1 provided the best results, showing a minimal leakage after 24 hours. Statystical analysis showed a significant difference about the RS1 group, the Thermafil and One/Step group, while no significant differences were noted between these last two groups. Results show that the number of teeth that had no (=0) leakage was higher in the RS1 group (8 specimens) than in the remaining ones (1 and 1 specimen, respectively). CONCLUSIONS: Under the conditions of the present experimental test, the new RS1 material (carrier-based Resilon) provided excellent preliminary results showing sealing ability at 24 hours significantly better that traditional carrier-based gutta-percha systems.
[Mh] Termos MeSH primário: Materiais Restauradores do Canal Radicular/farmacologia
Obturação do Canal Radicular
[Mh] Termos MeSH secundário: Dente Pré-Molar/efeitos dos fármacos
Guta-Percha/farmacologia
Seres Humanos
Técnicas In Vitro
Teste de Materiais
Plásticos/farmacologia
Distribuição Aleatória
Resinas Sintéticas/farmacologia
Permeabilidade Dentária/efeitos dos fármacos
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plastics); 0 (Resins, Synthetic); 0 (Root Canal Filling Materials); 0 (resilon sealer); 9000-32-2 (Gutta-Percha)
[Em] Mês de entrada:0910
[Cu] Atualização por classe:141120
[Lr] Data última revisão:
141120
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:090514
[St] Status:MEDLINE


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[PMID]:15953927
[Au] Autor:Polat S; Er K; Polat NT
[Ad] Endereço:Department of Oral and Maxillofacial Surgery, Cumhuriyet University, Faculty of Dentistry, Sivas, Turkey. spolat@cumhuriyet.edu.tr
[Ti] Título:Penetration depth of laser Doppler flowmetry beam in teeth.
[So] Source:Oral Surg Oral Med Oral Pathol Oral Radiol Endod;100(1):125-9, 2005 Jul.
[Is] ISSN:1528-395X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: The aim of this study was to determine the penetration depth of laser light in teeth for contact and noncontact probe tip. STUDY DESIGN: Fifty-one freshly extracted human mature maxillary and mandibular single rooted teeth were selected for the study. A laser Doppler flowmeter was used as a laser source. A digital camera was used to take pictures (with "night shot" mode in total darkness). When probe tip was in contact and when it was 1 mm away from the tooth, the depths of the areas illuminated in high and low density were measured. RESULTS: In contact probe, root was illuminated to 4.28 +/- 0.14 mm depth with high density and 13.27 +/- 0.27 mm depth with low density. In noncontact probe, 4.36 +/- 0.16 mm with high density and 13.28 +/- 0.30 mm with low density of illumination were seen on the root. Between contact and noncontact probe situations the difference was not statistically significant in the depth of illumination. On the other hand, in both groups the difference between areas illuminated in high and low density was statistically significant (P < .05). CONCLUSION: Contact or noncontact of the probe on tooth surface did not show any significant difference in light penetration. Besides, we think that, for the present, it is impossible to eliminate the contamination from periodontal tissues completely even if the necessary precautions (periodontal paste etc.) are taken.
[Mh] Termos MeSH primário: Fluxometria por Laser-Doppler
Lasers
Permeabilidade Dentária
[Mh] Termos MeSH secundário: Polpa Dentária/irrigação sanguínea
Seres Humanos
Fotografia Dentária
Espalhamento de Radiação
Transiluminação/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:0602
[Cu] Atualização por classe:050614
[Lr] Data última revisão:
050614
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:050615
[St] Status:MEDLINE


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[PMID]:12765095
[Au] Autor:Ponnaappa KC; Rao RN
[Ad] Endereço:Department of Conservative Dentistry and Endodontics, J.S.S. Dental College, Mysore, India.
[Ti] Título:Shear bond strength of 4th & 5th generation dentin bonding agents in the presence and absence of moisture. An in vitro study.
[So] Source:Indian J Dent Res;13(3-4):147-57, 2002 Jul-Dec.
[Is] ISSN:0970-9290
[Cp] País de publicação:India
[La] Idioma:eng
[Ab] Resumo:Extracated human molars were used for the study, flat dentinal surfaces were prepared on the occlusal surfaces, and then 4th and 5th generation dentin bonding agents were used in dry and moist conditions to bond composite resin onto the flat dentin surfaces. Shear Bond Strength was measured using Instron Universal Testing machine. Failures were recorded as adhesive, cohesive and mixed. Bond strength was highest in moist condition, because the moist surface permits more porous collagen network and hence greater infiltration of adhesive monomers, than do surfaces that are air dried. Moreover, those dentin bonding agents whose primers are based on acetone show improved bond strength, because acetone aggressively pursues and displaces water in the substrate, resulting in the primer resin being carried into tissue channels and porosities. When the dentin is air dried, the water that is supporting the collagen network evaporates causing the collagen network to collapse network is greatly reduced, which in turn decreases the premeability of intertubular dentin to adhesive resin and as a result causes decrease in bond strength. 5th generation dentin bonding agent showed significant improvement in the moist dentin bond strength.
[Mh] Termos MeSH primário: Colagem Dentária
Adesivos Dentinários
Resistência ao Cisalhamento
[Mh] Termos MeSH secundário: Bis-Fenol A-Glicidil Metacrilato/química
Resinas Compostas/química
Restauração Dentária Permanente/métodos
Análise do Estresse Dentário
Dentina/fisiologia
Adesivos Dentinários/química
Seres Humanos
Técnicas In Vitro
Teste de Materiais
Metacrilatos/química
Dente Molar
Ácidos Polimetacrílicos/química
Poliuretanos/química
Permeabilidade Dentária/fisiologia
Molhabilidade
[Pt] Tipo de publicação:COMPARATIVE STUDY; EVALUATION STUDIES; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Composite Resins); 0 (Dentin-Bonding Agents); 0 (Methacrylates); 0 (Polymethacrylic Acids); 0 (Polyurethanes); 0 (prime and bond 2.0); 125523-74-2 (urethane dimethacrylate luting resin); 163063-15-8 (All-Bond 2); 454I75YXY0 (Bisphenol A-Glycidyl Methacrylate); 6E1I4IV47V (hydroxyethyl methacrylate)
[Em] Mês de entrada:0306
[Cu] Atualização por classe:141120
[Lr] Data última revisão:
141120
[Sb] Subgrupo de revista:D
[Da] Data de entrada para processamento:030527
[St] Status:MEDLINE


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[PMID]:12653316
[Au] Autor:Lambrianidis T; Kapalas A; Mazinis M
[Ad] Endereço:Department of Endodontology, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.
[Ti] Título:Effect of calcium hydroxide as a supplementary barrier in the radicular penetration of hydrogen peroxide during intracoronal bleaching in vitro.
[So] Source:Int Endod J;35(12):985-90, 2002 Dec.
[Is] ISSN:0143-2885
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:AIM: To examine pH changes in the cervical external root surface, when calcium hydroxide was used as a supplementary barrier to the protective base material during intracoronal bleaching. METHODOLOGY: Twenty-eight single-rooted human premolars extracted for orthodontic reasons were instrumented with K-Flex files, obturated with gutta-percha and subjected to thermocatalytic bleaching. The teeth were divided into four groups. In group A, a glass-ionomer cement barrier was placed at the cemento-enamel junction (CEJ) level and in group C, the barrier was placed 1 mm apical to the CEJ. In groups B and D, Ca(OH)2 was placed in contact and apical to the glass-ionomer cement at the CEJ and 1 mm apical to the CEJ, respectively. The teeth were placed in vials containing distilled water and the pH values of the medium surrounding the teeth were recorded after 1, 2, 4, 10 and 15 days, following renewal of the medium. RESULTS: The pH in the medium became acidic in all groups. No statistically significant differences existed between groups for all the experimental days (P = 0.790). CONCLUSION: The placement of Ca(OH)2 as a supplementary barrier during intracoronal bleaching did not have a significant effect in reversing the acidic pH created at the external root surface in vitro. Its potential effect during these procedures in vivo needs to be further investigated.
[Mh] Termos MeSH primário: Hidróxido de Cálcio/química
Forramento da Cavidade Dentária/métodos
Peróxido de Hidrogênio/química
Clareamento Dental/métodos
[Mh] Termos MeSH secundário: Adulto
Análise de Variância
Dente Pré-Molar
Cavidade Pulpar/química
Cimentos de Ionômeros de Vidro/química
Seres Humanos
Peróxido de Hidrogênio/farmacocinética
Concentração de Íons de Hidrogênio
Técnicas In Vitro
Colo do Dente/química
Permeabilidade Dentária
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Glass Ionomer Cements); BBX060AN9V (Hydrogen Peroxide); PF5DZW74VN (Calcium Hydroxide)
[Em] Mês de entrada:0306
[Cu] Atualização por classe:141120
[Lr] Data última revisão:
141120
[Sb] Subgrupo de revista:D
[Da] Data de entrada para processamento:030326
[St] Status:MEDLINE


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[PMID]:12592921
[Au] Autor:Tilliss TS; Keating JG
[Ad] Endereço:Dental Hygiene Department, University of Colorado School of Dentistry, USA.
[Ti] Título:Understanding and managing dentin hypersensitivity.
[So] Source:J Dent Hyg;76(4):296-310; quiz 311-3, 2002.
[Is] ISSN:1043-254X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Dental hygienists frequently encounter clients who present with one or several sensitive teeth. These clients often rely on the dental hygienist to help determine the cause and to provide supportive treatment to relieve their discomfort. Therefore, it is essential for dental hygienists to fully understand the complexity of dentin sensitivity, be well informed about treatment approaches, and have an appreciation of the difficulties inherent in designing and conducting clinical hypersensitivity trials. Difficulties in designing hypersensitivity research have precluded a definitive answer concerning a best treatment approach. The purpose of this course is to present dental hygienists with current information about the pain of sensitive teeth and the associated differential diagnosis. The theory of pain transmission, etiology of dentin sensitivity, professional and self-care treatment modalities, and natural remission of tooth sensitivity will be discussed. Tooth and pulp biology will be reviewed as a means of explaining treatment and management approaches. At completion of this course, as measured by a post-test, participants with be prepared to apply the knowledge gained to their evidence-based practice to positively impact the oral health of their clients.
[Mh] Termos MeSH primário: Sensibilidade da Dentina/diagnóstico
Sensibilidade da Dentina/terapia
Educação em Saúde Bucal/métodos
Educação de Pacientes como Assunto
[Mh] Termos MeSH secundário: Higienistas Dentários/educação
Placa Dentária/complicações
Sensibilidade da Dentina/etiologia
Sensibilidade da Dentina/psicologia
Diagnóstico Diferencial
Educação em Odontologia
Medicina Baseada em Evidências
Retração Gengival/complicações
Retração Gengival/diagnóstico
Seres Humanos
Dor/psicologia
Manejo da Dor
Projetos de Pesquisa
Autocuidado/métodos
Dente/anatomia & histologia
Abrasão Dentária/complicações
Atrito Dentário/complicações
Permeabilidade Dentária/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Em] Mês de entrada:0306
[Cu] Atualização por classe:161021
[Lr] Data última revisão:
161021
[Sb] Subgrupo de revista:D
[Da] Data de entrada para processamento:030221
[St] Status:MEDLINE



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