Influence of different adhesion strategies on glass fiber post retention.

Background: Failures in glass fiber post (GFP) retention may be associated with low adhesion achieved in root dentin. Material and Methods: 55 single-rooted premolars were endodontically treated and distributed according to different adhesion strategies (n=11): G1: RelyX ARC (3M ESPE; etch-rinse strategy); G2: Relyx Ultimate (3M ESPE; etch-rinse strategy); G3: AllCem (FGM; etch-rinse strategy); G4: Relyx Ultimate (3M ESPE; self-etching strategy); G5: RelyX U200 (3M ESPE; self-adhesive strategy). For Bonding Strength (BS) analysis, the roots were sectioned in slices (1.0mm thickness) corresponding to each root third and submitted to push-out test. The type of failure was assessed by scanning electron microscopy (SEM). Results: The highest BS averages were found in G2 and G3. However, in the middle and apical root thirds, G3 showed statistically similar results to G4 and G5. In the cervical and middle third, G1 was statistically similar to G4 and G5. The mixed type of failure was the most common in all groups. Conclusions: Self-etching (G4) and self-adhesive resin (G5) cements, showed similar BS results of immediate bonding in the cementation of GFP compared to conventional resin cements (G1, G2, G3). Key words:Dental Cements, Dentin-Bonding Agents, Post and Core Technique, Dental Bonding.

Evaluation of different composite resin finishing and polishing protocols by confocal laser scan microscopy

Aim This study aimed to analyze the influence of finishing and polishing (F/P) protocols on resin surface through roughness (Ra) values and laser scan microscopy observations. Methods Forty-eight (n=48) resin specimens were sorted into four groups (n=12), according to the type of resin used: Filtek Z250 (Z250), Filtek Z350 (Z350), Filtek One Bulk Fill (BF), Filtek P60 (P60). The specimens were sorted into six groups according to the type of F/P system used (n=2/group): Control group, Diamond bur (KG Sorensen), Soflex Pop-On Discs (3M ESPE), Soflex Spiral (3M ESPE), Dura Gloss (American Burs), and Praxis (TDV). Results The highest roughness values (Ra) were attributed to BF group for all F/P systems, except for the Soft-Lex PopOn discs. The Soft-Lex PopOn, Spiral, and Praxis discs presented a better performance for the surface treatment of the tested composite resins. Regardless of the restorative material, the use of diamond bur or single-step abrasive rubber (Dura Gloss) were associated with the highest Ra values. Conclusion The effect of F/P systems on Ra is material-dependent and instrument or system-dependent.

Evaluation of ceramic veneer adaptation by optical coherence tomography: a clinical report / Avaliação da adaptação de laminado cerâmico por tomografia de coerência óptica: relato de caso

Introduction: Ceramic veneers represent a treatment approach in aesthetic dentistry. They are indicated in cases of alterations in size, contour, form and color of the teeth. The clinical and radiographic examinations may not allow the correct identification of failures in the treatment with ceramic veneers. Objective: To report the use of Optical Coherence Tomography (OCT) for the evaluation and repair of an aesthetic oral rehabilitation involving ceramic veneers. Case report: A 24-year-old female patient complained of unsatisfied color change in the ceramic veneer placed on the right maxillary central incisor. The clinical examination showed color changes between the middle and incisal thirds of mesial surface of the tooth crown. The OCT sagittal images evidenced the presence of bubbles or gaps in the adhesive interface. The treatment consisted of repair of the restoration by infiltration of a composite resin. Conclusion: The OCT was found to be valid tool to evaluate the adaptation of the ceramic veneer placed on the maxillary central incisor (AU)

Introdução: Laminados cerâmicos representam uma abordagem de tratamento em Odontologia. São indicados em casos de alterações no tamanho, contorno, forma e cor dos dentes. O exame clínico e o emprego de radiografias convencionais podem não permitir a correta identificação de falhas no tratamento com laminados cerâmicos. Objetivo:Relatamos o uso da tomografia de coerência óptica (TCO) para avaliação da adaptação e reparo de uma reabilitação oral estética com laminados cerâmicos. Relato de caso:Paciente do sexo feminino, 24 anos, queixou-se de alteração de cor em laminado cerâmica cimentado no incisivo central superior direito. O exame clínico evidenciou alterações de cor entre os terços médio e incisal da superfície mesial do dente. As imagens obtidas por TCO mostraram a presença de bolhas ou gaps na interface adesiva da região. O plano de tratamento consistiu no reparo mediante infiltração de uma resina composta no local indicado pela TCO. Conclusão: A tomografia de coerência óptica se mostrou um método auxiliar eficaz para análise da adaptação do laminado cerâmico no incisivo superior direito. (AU)

Color stability of Bulk-Fill composite restorations.

BACKGROUND: The color stability of the composite resin is an important property that influences its clinical longevity, which remains an inherent challenge to the material. Thus, the purpose of this study was to evaluate the color stability of bulk-fill resins when exposed to dye. MATERIAL AND METHODS: Cavities were prepared in 80 bovine incisors, which were randomly assigned into 4 groups (n = 20) according with the resin composite used: P60 (Control Group - Filtek P60, 3M/ESPE), FP (Filtek Bulk-Fill Posterior, 3M/ESPE), SDR (SDR, Dentsply) and FF (Filtek Bulk Fill Flow, 3M/ESPE). All restorations were performed according to the protocol of each manufacturer, the control group was restored using the incremental technique, and the other groups using single-increment technique. The color of each restoration was measured using a portable digital spectrophotometer (Easyshade-Vita) according to the CIELab system, and then the teeth were submerged in red wine for 07 days, kept in a biological oven at 37ºC. New color registration was performed to measure the ΔE index of color variation. RESULTS: The P60 group had the lowest average ΔE (16.96), while the FF group had the highest average (28.09) and ranged from 21.19 to 26.28 in the FP and SDR groups. CONCLUSIONS: Analysis of the color variation showed that the control group had better color stability than the Bulk-Fill resins evaluated. Key words:Dental restoration failure, Food coloring agents, polymerization.

The influence of violet LED light on tooth bleaching protocols: In vitro study of bleaching effectiveness.

BACKGROUND: Employing violet LED on tooth bleaching is a recent but promising technique. This study aimed to assess the bleaching effectiveness of violet light-emitting diodes (LEDs) associated or not with bleaching gels containing hydrogen peroxide (HP) or carbamide peroxide (CP). METHODS: seventy bovine incisors were randomly assigned into 7 groups (n = 10) according to the technique and whitening product used. Group C: Artificial saliva (placebo); Group HP L-: three sessions of HP at 35 % without light activation; Group CP L-: three weeks of CP at 16 % for 4 h/day; Group HP CP L-: three sessions of HP at 35 % without light activation + 2 weeks of CP at 16 %, for 4 h/day; Group LED: four sessions with violet LED; Group HP L+: three sessions with HP at 35 % + violet LED; Group CP L+: three weeks with CP at 16 % for 4 h/day + violet LED. Color changes (ΔE and ΔL) were measured with a portable digital spectrophotometer. RESULTS: The results were similar between the groups of bleaching protocols, demonstrating that the use of the violet LED did not influence bleaching effectiveness when using HP 35 % or CP 16 % after 3 sessions. In addition, the use of the violet LED alone obtained ΔE values ​​similar to the protocols with the use of peroxides, however less variation of ΔL was observed for this group. CONCLUSIONS: The use of violet LEDs associated or not with bleaching gels was effective for tooth whitening. In addition, it was also concluded that the physical lightening technique with violet LED used alone produced less variation in dental brightness.

Influence of different thermopolymerization methods on composite resin microhardness.

BACKGROUND: Additional heat polymerization in composite resins allows greater effective-ness of microhardness, flexural strength, fracture tough-ness, wear resistance, and increased color stability. MATERIAL AND METHODS: 150 composite resin specimens were made using a 4 mm diameter and 2 mm thick bipartite steel matrix. Five resins composed of different compositions were tested (Brilliant Everglow/Coltene, Filtek One BulkFill/3M, Filtek P60/3M, Filtek Z350XT/3M, Filtek Z250XT/3M), and for each of them three types of polymerization were tested: light curing only (n=50); photopolymerization + autoclave thermopolymerization (n=50) and photopolymerization + microwave thermopolymerization (n=50). Each specimen was submitted to three indentations by means of the Vickers microhardness test, applying a load of 300gf, associated with the time of 15s. Data were analyzed descriptively by means of statistics, standard deviation and coefficient of variation and inferentially by the F test (ANOVA) in the comparison between groups. The margin of error used in statistical test decisions was 5%. RESULTS: The highest vicker microhardness averages were from the Control group (light curing only) on P60 (82.16) and Z250 XT (79.61) resins. The lowest averages were all verified on Brilliant Everglow resin in all polymerization methods studied: Photopolymerization (37.32), with microwave (43.80) and autoclave (45.12), followed by Bulk Fill 3M resin, ranged from 52.23 to 59.15. CONCLUSIONS: Both autoclave and microwave thermopolymerization methods showed similar behavior on the microhardness of the composites studied. Considering the resin type, there was a varied behavior compared to thermopolymerization, which increased the microhardness values for Brilliant Everglow resins (Coltene) and Filtek One Bulkfill (3M) and decreased for Filtek P60, Filtek Z350XT and Filtek Z250XT resins. Key words:Dentistry, composite resins, polymerization.

Clinical Evaluation of Postoperative Sensitivity in Class I Resin Composite Restorations / Avaliação clínica da sensibilidade pós-operatória em restaurações classe I em compósitos restauradores

Objective: To evaluate the post operative sensitivity in posterior restorations with different resin composites and adhesive systems as well as the influence of the depth and extent of the dental cavity. Material and Methods: A double-blind clinical trial was carried out with 80 class I restorations of 16 patients. The participants were divided into 4 groups according to the adhesive system + composite: F + P (Filtek P90™ + P90™); R + S (Rok™ + Stae™); P + A (P60™ + Adper SE PLUS™); E + X (Evolux™ + XPBond™ Adhesive). After 7, 15 and 30 days, the presence of postoperative sensitivity was evaluated and classified according to type and intensity. The data were submitted to Pearson'schi-square test, Fisher's exact teste, Student'st-test and ANOVA. A significance level of 5%was used for all tests. Results: The presence of post operative sensitivity was approximately 6% of the total sample. The sensitivity decreased with the evaluation time, with the smallest reduction occurring from the 7-day evaluation compared to the other evaluations. Conclusion: There was found no evidence of influence of the resin composite and adhesive type, depth and extension of the cavities for the presence of postoperative sensitivity. (AU)

Objetivo: Avaliar a prevalência da sensibilidade pós-operatória em dentes posteriores restaurados com diferentes resinas compostas e sistemas adesivos em relação a profundidade e extensão da cavidade dental. Material e Métodos: Estudo clínico duplo-cego foi realizado com 80 restaurações classe I em 16 pacientes. Os pacientes foram divididos em 04 grupos de acordo com compósito restaurador e sistema adesivo: F + P (Filtek P90™ + P90™); R + S (Rok™ + Stae™); P + A (P60™ + Adper SEPLUS™); E + X (Evolux™ + XPBond™ Adhesive). Após 7, 15 e 30 dias, a presença de sensibilidade pós-operatória foi avaliada e classificada quanto ao tipo e intensidade. Os dados foram analisados estatisticamente mediante os testes estatísticos qui-quadrado de Pearson, exato de Fisher, t de Student e ANOVA. Um nível de significância de 5%foi utilizado para todas as analises. Resultados: A presença de sensibilidade pós-operatória foi de aproximadamente 6% na amostra. A sensibilidade reduziu com o tempo de avaliação, sendo que a menor redução ocorreu da avaliação de 7 dias para as outras avaliações e a menor de 15 para 30 dias. Conclusão: Não se evidenciou influência do tipo de compósito e adesivo, profundidade e extensão das cavidades na presença de sensibilidade pós-operatória. (AU)

Multidisciplinary Approach to Smile Restoration: Gingivoplasty, Tooth Bleaching, and Dental Re-anatomization.

This article reports on the case of a patient who underwent a multidisciplinary treatment in smile design that entailed dental cosmetic techniques involving esthetic periodontal surgery, teeth bleaching, and re-anatomization of the upper incisors. The male patient presented with a chief complaint of an excessive gingival display while smiling, as well as small, darkened teeth with spaces between them. After diagnosis and patient consent, therapy began in the following stages: periodontal plastic surgery with probing, bleeding points delimitation, beveled incision, removal of the gingival band with periodontal curettes, and finishing with an electric scalpel. After 21 days following surgery, dental bleaching using a combined technique that included two sessions of in-office bleaching (35% hydrogen peroxide) and 2 weeks of at-home bleaching (carbamide peroxide 16% for 4 hours per day) was carried out, followed by dental re-anatomization using resin composite. Diagnostic waxing, mock-up, fabrication of a palatal silicone index, incremental sculpturing, and structuring the restoration of the palatal shell to the vestibular surfaces was then completed, followed by occlusal adjustment, finishing, and polishing. The multidisciplinary intervention was fundamental for the accomplishment of the proposed treatment that combined biological, functional, and esthetic concepts.

In vivo optical coherence tomographic imaging to monitor gingival recovery and the adhesive interface in aesthetic oral rehabilitation: A case report.

The available methods for veneer evaluation are limited to clinical and radiographic examinations, which may not allow the appropriate identification of failure. In this report, we demonstrate the use of optical coherence tomography (OCT) as a noninvasive diagnostic and follow-up method to evaluate gingival recovery and the adhesive interface in aesthetic oral rehabilitation involving periodontal plastic surgery and ceramic laminate veneers. OCT was efficient for evaluating both soft and hard tissues, as well as the quality of the adhesive interface. In conclusion, OCT was found to be a promising approach for the professional evaluation of aesthetic oral rehabilitation, as it was capable of generating images that enabled the analysis of gingival recovery and the adhesive interface.

Restaurações estéticas em substratos com alteração cromática ­ relato de caso / Aesthetic restorations on substrates with chromatic alterations ­ case report

Alterações cromáticas dos dentes contribuem para a insatisfação dos pacientes, repercutindo de maneira negativa nas suas relações interpessoais, sendo esta estética um conceito altamente subjetivo, estando associado a diversos fatores e expectativa do paciente. Dessa forma, a evolução tecnológica dos materiais restauradores trazem consigo a busca constante da Odontologia por tratamentos estéticos de excelência. Com o intuito de recuperar a estética do sorriso em situações desafiadoras de escurecimento dental, o cirurgião-dentista dispõe de algumas opções de tratamento, das quais, as facetas diretas em resina composta e as facetas indiretas em cerâmica apresentam diferentes particularidades e aplicações clínicas. Este trabalho teve como objetivo casos clínicos de facetamento vestibular direto e indireto de dentes anteriores, empregando resina composta e cerâmica odontológica, realizando uma análise comparativa entre ambas as técnicas restauradoras para que os profissionais possam compreender a indicação, vantagem, desvantagem e contraindicação de tais modalidades restauradoras, visando alcançar o sucesso do tratamento e a satisfação do paciente. Como toda técnica, elas apresentam vantagens e desvantagens. A técnica direta apresenta limitações, como a menor estabilidade de cor e a dificuldade de mascarar substratos escurecidos, em contrapartida, apresentam menor custo, tratamentos mais rápidos e menor/nenhum desgaste da estrutura dental. A técnica indireta apresenta limitações quanto ao tempo de finalização do tratamento e maior custo, porém, apresenta boa estabilidade de cor, alta resistência e boa recuperação periodontal. Concluiu-se que as facetas estéticas, obtidas por meio da técnica direta e indireta, representam alternativas restauradoras viáveis e de ampla aplicabilidade clínica (AU).

The present study aimed at clinical cases of direct and indirect vestibular facet of anterior teeth, using composite resin and dental veeners, performing a comparative analysis between both restorative techniques so that professionals can understand the indication, advantage, disadvantage, and contraindication of sush modalities to achieve treatment success and patient satisfaction. In this way, the technological evolution of restorative materials brings with it the constant search of Dentistry for aesthetic treatment of excellence. In order to recover the aesthetics of the smile in challenging situations of dental dimming, the dentist has some options of treatment, of which, the direct facets in composite resin and the indirect facets in ceramics present different peculiarities and clinical applications. The present study aimed at clinical cases of direct and indirect vestibular facet of anterior teeth, using composite resin and dental ceramics, performing a comparative analysis between both restorative techniques so that professionals can understand the indication, advantage, and disadvantages. The direct one has limitations sush as the lower color stability and the difficulty of the masking darkened substrates, in contrast, they present lower costs, faster treatments and less/no wear of dental structure. The indirect technique has limitations regarding the time of treatment completion and higher cost, but it presents good color stability, high resistance, and good periodontal recovery. It was concluded that the aesthetic facets, obtained through the direct and indirect technique, represent feasible restorative, alternatives, and wide clinical applicability (AU).

Reabilitação estética de dentes anteriores fraturados / Aesthetic rehabilitation of anterior fractured teeth

As fraturas coronárias causam comprometimento estético e alteração da mastigação e fonação, interferindo diretamente na qualidade de vida do indivíduo. Diante deste problema, para reabilitação do paciente, pode-se realizar a colagem do fragmento (quando existente) ou restaurações em resina composta ou cerâmica. O objetivo deste trabalho é relatar um caso clínico de reabilitação estética de dentes anteriores fraturados. Paciente procurou atendimento na clínica do Curso de Especialização em Dentística do Centro de Pós-Graduação em Odontologia (CPGO) em Recife/PE queixando-se da fratura nos incisivos centrais superiores. Ao exame clínico e radiográfico, constatou-se fratura coronária oblíqua de esmalte e dentina, sem comprometimento biológico. O paciente foi submetido ao tratamento clareador dental e os dentes foram restaurados diretamente com resina composta com o auxílio de uma guia palatina em silicone. O resultado evidenciou satisfação expressa pelo paciente. Concluiu-se que a técnica de clareamento dental foi eficaz, facilitando o alcance do mimetismo e cor ideal da resina composta a ser empregada; a utilização da guia palatina confeccionada em silicone de adição possibilitou anatomização adequada da face lingual e definição do contorno; o tratamento realizado apresentou excelente reprodução da forma, cor e textura da estrutura dental, permitindo a restauração de um sorriso harmônico (AU).

Coronary fractures cause aesthetic impairment and alteration of chewing and phonation, directly interfering in the individuals quality of life. Faced with this problem, for patient rehabilitation, the fragment can be bonded (when existing) or composite resin or ceramic restorations. The aim of this paper is to report a clinical case of aesthetic rehabilitation of fractured anterior teeth. Patient sought care at the Clinic of the Specialization Course in Dentistry of the Postgraduate Center in Dentistry (CPGO), Recife/PE, complaining of fracture in the maxillary central incisors. Clinical and radiographic examination revealed oblique coronary fracture of enamel and dentin, without biological impairment. The patient underwent dental bleaching treatment and the teeth were restored directly with composite resin with the aid of a silicone palatal guide. The result showed satisfaction expressed by the patient. It was concluded that the tooth whitening technique was effective, facilitating the reach of mimicry and ideal color of the composite resin to be employed; the use of the palatal guide made of addition silicone allowed adequate anatomy of the lingual face and definition of the contour; the treatment performed presented excellent reproduction of the shape, color and texture of the dental structure, allowing the restoration of a harmonious smile (AU).

Harmonização estética do sorriso ­ cirurgia periodontal, clareamento dental e fechamento de diastemas ­ relato de caso / Aesthetic harmonization of the smile ­ periodontal surgery, dental whitening, and diastema closure - case report

Este estudo teve por objetivo relatar um caso clínico de harmonização estética do sorriso com abordagem multidisciplinar integrada, envolvendo cirurgia plástica periodontal, clareamento dental associado e fechamento de diastema com resina composta aplicada diretamente pela técnica "mãos livres". Após anamnese, diagnóstico e aceita da proposta terapêutica, foi realizado o procedimento cirúrgico periodontal (gengivectomia, gengivoplastia e frenectomia labial superior). Após o período cicatricial, foi realizado clareamento dental associado com as técnicas de consultório (peróxido de hidrogênio 35% - 02 sessões) e supervisionado (peróxido de carbamida 10% - 08hs/dia - 02 semanas). O tratamento foi finalizado com restaurações adesivas diretas em resina composta à mão livre para o fechamento de diastema. A terapêutica adotada evidenciou a necessidade de conhecimento científico e habilidade técnica profissional para seu emprego; mostrou-se eficaz como alternativa acessível de tratamento; permitiu melhor equilíbrio da harmonia estética do sorriso e a satisfação do paciente (AU).

This study aimed to report a clinical case of aesthetic harmonization of the smile with an integrated multidisciplinary approach, involving periodontal plastic surgery, associated to dental whitening and diastema closure with composite resin applied directly by the "hands free" technique. After anamnesis, diagnosis, and acceptance of the therapeutic proposal, the periodontal surgical procedure was performed (gingivectomy, gingivoplasty, and upper labial frenectomy). After the healing period, dental bleaching associated with the office techniques (35% hydrogen peroxide - 02 sessions) was performed and supervised (carbamide peroxide 10% - 08hs/day - 02 weeks). The treatment was finished with free hands direct adhesive composite resin restorations for diastema closure. The therapy adopted evidenced the need for scientific knowledge and professional technical skills for its use. It proved to be effective as an accessible treatment alternative; allowed better balance of the smile aesthetic harmony and the satisfaction of the patient (AU).

Restorations with Bulk Fill restorative system: case report / Restaurações com sistema restaurador Bulk Fill: relato de caso

ABSTRACT Bulk Fill Composite resins are restorative materials that present low tension and polymerization shrinkage, allowing them to be inserted in a single increment of up to 4 mm of thickness, in a restorative cavity. This paper aims to report a clinical case of restorations done on posterior teeth with Bulk Fill restorative system, using selective acid-etching with self-etch adhesive system. Patient, male, 24 years old, presented a carious lesion on the occlusal surface of dental element 37 and an occlusal unsatisfactory amalgam restoration, on element 36. A restorative treatment with Universal Bond 3M / ESPE and bulk fill composite resin (3M / ESPE) was done. According to the case described, it was possible to observe that the materials and techniques used restored the form and function of the teeth involved, preserving pulp vitality with a satisfactory aesthetic result. The bulk fill resins employed offer practicality and decrease clinical time, with satisfactory clinical applicability in the aesthetic and functional rehabilitation of posterior teeth.

RESUMO Resinas compostas do tipo Bulk fill constituem um material restaurador que apresenta baixas tensão e contração de polimerização, podendo ser inserido em incremento único, de até 4mm de espessura, numa cavidade. Este trabalho objetiva relatar um caso clínico de restaurações em dentes posteriores com o sistema restaurador Bulk fill, empregando o condicionamento ácido seletivo com sistema adesivo autocondicionante de emprego universal. Paciente, sexo masculino, 24 anos, apresentava lesão de cárie na face oclusal do elemento dentário 37 e restauração oclusal de amálgama insatisfatória, no elemento 36. Sendo proposto e realizado tratamento restaurador com Single Bond Universal 3M/ESPE e resina composta bulk fill (3M/ESPE). De acordo com o caso descrito, foi possível observar que os materiais e técnica empregados restituíram forma e função dos dentes envolvidos, preservando a vitalidade pulpar com estética considerada satisfatória. As resinas bulk fill empregadas oferecem praticidade e diminuição do tempo clínico, tendo aplicabilidade clínica satisfatória na reabilitação estética e funcional de dentes posteriores.

Perfil dos egressos do Curso de Odontologia da Universidade Federal de Pernambuco / Profile of dentists graduate from the Federal University of Pernambuco

O objetivo deste estudo foi avaliar o perfil de egressos do curso de graduação em Odontologia da Universidade Federal de Pernambuco, formados no modelo curricular vigente até o ano de 2009, denominado 6404. Uma amostra de conveniência de 233 cirurgiões-dentistas graduados de 2003 a 2008 foi entrevistada individualmente com uso de formulário específico. Os dados obtidos foram tabulados e submetidos à análise estatística descritiva e inferencial (teste chi-quadrado Pearson ou teste Exato de Fisher) (α=5%). Verificou-se que 30,9% dos egressos atuavam somente como profissionais liberais, 15% apenas em cargo público e que 40,8% associavam o exercício liberal à docência, cargo público e/ou empresa privada. O grau de satisfação com a profissão mostrou-se diretamente relacionado à renda e não aos conhecimentos adquiridos. A renda foi influenciada pelo tipo de exercício profissional. Concluiu-se que os egressos possuem o perfil de um profissional preocupado com a educação continuada e que geralmente associa a atividade liberal a outro exercício laboral no âmbito da Odontologia. Este profissional, à medida em que apresenta mais tempo de formado, melhora sua renda mensal, mas exibe menor confiança na melhora do mercado de trabalho (AU).

The aim of this study was to evaluate the profile of dentists that graduated from the Federal University of Pernambuco, who graduated during the curricular model that was in force until 2009, called 6404. A convenience sample consisted of 233 dentists who graduated from 2003 to 2008 were individually interviewed using a specially-designed questionnaire for data collection. Data were tabulated and subjected to descriptive and inferential statistical analysis (Pearson's chi-squared test or Fisher exact test) (α = 5%). It was found that 30.9% of the dentists were self-employed, 15% worked only in public service and 40.8% combined being selfemployed with teaching, and public service or private practice. The degree of satisfaction with the profession was directly related to income and not to the acquired knowledge. The income was influenced by the type of professional activity. It was concluded that the dentists were concerned about continuing education and generally combine being self-employed with another type of work in the dentistry setting. The longer the time that has passed since graduation, the better the monthly income for these professionals, but they have less confidence that the labor market will improve (AU).

Prefabricated composite resin veneers: a clinical case report / Facetas pré-fabricadas em resina composta: relato de caso

The authors present a complete clinical case report of functional and aesthetic rehabilitation of the smile harmony of a 23-year-old male patient through periodontal plastic surgery, tooth bleaching and prefabricated composite resin veneers, emphasizing the advantages, limitations and patient's perceptions about the treatment. After clinical and radiographic evaluations, extra and intra-oral photographs were taken, plaster study models were obtained, digital smile design and diagnostic wax-up were performed. The patient accepted and authorized the proposed dental procedures. The treatment proved to be effective, being a practical and safe approach, with aesthetic recovery of the smile harmony and patient satisfaction. (AU)

Os autores apresentam um caso clínico completo envolvendo reabilitação funcional e estética da harmonia do sorriso de um paciente de 23 anos de idade através da associação de plastia gengival, clareamento dental e facetas pré-fabricadas de resina composta, ressaltando vantagens, limitações e a percepção do paciente. Após análise clínica, radiográfica, realizouse fotos intra/extra orais, obteve-se modelos de estudo em gesso e foram realizados o planejamento digital do sorriso e enceramento diagnóstico. Os procedimentos propostos foram aceitos e autorizados pelo paciente antes da sua realização. O tratamento realizado mostrou-se efetivo como uma alternativa prática e segura, com restabelecimento estético e satisfação do paciente.(AU)

Clinical performance of class I occlusal composite resin restorations: a multicenter double-blinded randomized clinical trial / Performance clínica de restaurações oclusais classe I em resina composta: ensaio clínico randomizado duplo-cego e multicêntrico

Objective: To evaluate the 6-month clinical performance of class I occlusal composite resin restorations through a multicenter, randomized, double-blind, clinical trial. Material and Methods: Two hundred and eighty class I occlusal restorations were performed in 70 patients (aged between 17 to 50 years). The restorations were divided into four groups: G1 (Filtek P60/3M ESPE); G2 (Rok/SDI); G3 (Filtek™ P90/3M ESPE); G4 (Evolux/Dentsply). Two pre-calibrated dental practitioners performed and evaluated the restorative procedures regarding to color match, marginal discoloration, recurrent caries, wear (anatomic form) and marginal integrity according to the USPHS criteria. Results: In 85.8% of the evaluated restorations was observed the ideal score (A) for color match; 91.4% for marginal discoloration; 100% for recurrent caries; 87.7% for wear (anatomic form) and 99.3% for marginal integrity. Conclusion: The composite resins used in this study presented satisfactory and similar clinical performance in a 6-month clinical evaluation. (AU)

Objetivos: Avaliar através de um ensaio clínico randomizado duplo-cego e multicêntrico o desempenho clínico de restaurações classe I oclusais realizadas em dentes posteriores. Material e Métodos: Foram realizadas duzentas e oitenta restaurações em 70 pacientes dos gêneros masculino e feminino (entre 17 e 50 anos). As restaurações foram divididas em 4 grupos: G1 (Filtek P60/3M ESPE); G2 ( Rok/SDI); G3 Filtek TM P90/3M ESPE); G4 (Evolux/Dentsply). Dois operadores précalibrados avaliaram os procedimentos restauradores em relação a reprodução da cor, descoloração marginal, incidência de cárie, desgaste e integridade marginal de acordo com os critérios da USPHS. Resultados: De um total de restaurações avaliadas, 85,8% receberam score ideal (A) para reprodução da cor; 91,4% para descoloração marginal; 100% para incidência de cárie; 87,7% para contorno e 99,3% para integridade marginal. Conclusão: Os materiais empregados neste estudo apresentaram desempenho clínico satisfatório e semelhante após avaliação clínica de 06 meses. (AU)

Impact of dental treatment on self-esteem and oral health selfperception of children and adolescents victims of sexual abuse / Impacto do tratamento odontológico na autoestima e autopercepção de saúde bucal de crianças e adolescentes vítimas de abuso sexual

Objective: To evaluate the oral health selfperception and the influence of dental treatment on the self-esteem of children and adolescents victims of sexual abuse. Material and Methods: It was adopted a qualitative methodology that emphasized the deepening and comprehension of the answers obtained. Six children and adolescents, from both genders, victims of sexual abuse in the last two years, aged between 10 and 15, took part of the study. A questionnaire was applied before and after the dental treatment in order to evaluate changes in the self-perception and self-esteem of the individuals. The answers were categorized into two thematic axes with the use of the qualitative content analysis: self-perception and self-esteem. Psychological attendance prior and after the dental interventions enabled to comprehend the changes observed. Results: The participants presented a coherent self-perception in relation to the present clinical situation and an increase of their self-esteem after the dental interventions. Conclusion: Dental treatment contributed to improvements regarding self-esteem and oral health self-perception in victims of sexual abuse. (AU)

Objetivo: Analisar a autopercepção da saúde bucal e a influência do tratamento odontológico na autoestima de crianças e adolescentes vítimas de abuso sexual. Material e Métodos: Utilizou-se a metodologia para análise de conteúdo qualitativa que enfatizou o aprofundamento e a compreensão das respostas obtidas. Seis crianças e adolescentes, ambos os gêneros, vítimas de abuso sexual nos últimos dois anos, com idade entre 10 e 15 anos, participaram do estudo. Um questionário foi aplicado antes e após o tratamento odontológico para avaliar mudanças na autopercepção e na autoestima dos indivíduos. Através da análise de conteúdo, as respostas foram categorizadas em dois eixos temáticos: autopercepção e autoestima. O atendimento psicológico antes e após as intervenções odontológicas possibilitou compreender as mudanças observadas. Resultados: Os participantes deste estudo apresentaram uma autopercepção de saúde bucal coerente com a realidade clínica encontrada e que houve aumento da autoestima após as intervenções odontológicas. Conclusão: O tratamento odontológico contribuiu para melhorias na autoestima e autopercepção da saúde bucal das crianças e adolescentes vítimas de abuso sexual. (AU)

COMPORTAMENTO CLÍNICO DE RESINAS COMPOSTAS EM DENTES POSTERIORES - REVISÃO SISTEMATIZADA DA LITERATURA / Clinical Behavior of Composite Resins in Posterior Teeth - Systematic Literature Review

Dentre os materiais restauradores diretos empregados na atualidade, as resinas compostas constituem a primeira opção para a restauração de dentes posteriores quando a estética é requisitada. O Objetivo deste estudo é revisar a literatura de forma sistemática, sobre a avaliação do comportamento clínico de restaurações de resina composta em dentes posteriores. Onze artigos que tratavam sobre o tema, publicados em periódicos científicos indexados no período de 2005 a 2015, foram selecionados após pesquisa bibliográfica nas seguintes bases de dados: LILACS, MEDLINE, BBO e SCIELO; utilizandose os descritores combinados: Restaurações diretas, Resinas compostas, Avaliação clínica, Dentes posteriores, Materiais restauradores. Deles foram retiradas as principais informações contidas no texto, a respeito das características de avaliação desses materiais em estudos clínicos científicos. Sete artigos relataram desempenho clínico aceitável para as restaurações avaliadas, observando-se que alguns tipos de cavidades são mais factíveis a falhas após a realização das restaurações. A utilização de resinas compostas em dentes posteriores apresenta aceitabilidade e sucesso clínico. Suas falhas são atribuídas principalmente às propriedades do próprio material restaurador e à sensibilidade da técnica restauradora, sendo mais comuns em restaurações de cavidades tipo classe II.

Among the restorers direct employees today materials, composites are the first choice for restoring posterior teeth when aesthetics are required. The aim of this study is to review the literature in a systematic way on the evaluation of the clinical behavior of composite restorations in posterior teeth. Eleven articles that dealt on the subject, published in scientific journals indexed in the period from 2005 to 2015, were selected after literature search in the following databases: LILACS, MEDLINE, BBO and SCIELO; using the combined descriptors: Direct Restorations, Composite resins, Clinical, later teeth, restorative materials. Of them were taken key information contained in the text, regarding the evaluation of characteristics of these materials in scientific clinical studies. Seven articles reported acceptable clinical performance for the evaluated restorations, noting that some types of cavities are more feasible fault after the completion of the restorations. The use of composite resins in posterior teeth presents acceptability and clinical success. Your failures are attributed mainly to the properties of the restorative material itself and the sensitivity of restorative technique, being more common in restorations of class II cavities.

Evaluation of acidulated dentifrice influence on fluoride releasing from glass-ionomer cements / Avaliação da influência de creme dental acidulado na liberação de flúor de cimentos de ionômero de vidro

Objetivo: Avaliar a influência da exposição a um creme dental acidulado sobre a liberação de flúorde Cimentos de Ionômero de Vidro (CIV). Material e Métodos: Confeccionou-se 27 corpos de prova divididos em 3 grupos: G1 (Maxion - R), G2 (KetacMolar 3M/ESPE) e G3 (Vittremer 3M/ESPE), subdividido em subgrupos (n = 3): A (exposição ao creme dental flúor acidulado – pH 4,5 / 7 h / 37ºC), B (exposição ao creme dental fluoretado não acidulado / 7 h / 37 ºC) e C (controle - exposição à saliva artificial). Após exposição aos cremes dentais,os corpos de prova foram imersos em saliva artificial e aferidas a liberação de flúor nos períodos de tempo:1 e 14 dias. Os dados obtidos foram submetidos a análise de variância, utilizando o pacote SPSS (Statiscal Package for Social Science). Aplicou-se seo Teste ANOVA com 5% de probabilidade, para comparação das médias e do comportamento de cada material. Resultados: A exposição ao creme dental ácido apresentou valores de liberação de flúor (ppm/mm2) que variaram, em suas médias, de 1 e 14 dias:G1A (0,269 a 0,204); G2A (0,394 a 0,038); G3A(0,080 a 0,123). Foi estatisticamente significante a relação entre os subgrupos para G1 em T1 e G3 emT1 e T14. Conclusão: a exposição ao creme dental acidulado influenciou positivamente a liberação de flúor do CIV híbrido testado e não impactou a liberação deste íon nos CIVs convencionais.

Objectives: To evaluate the acidulated dentifrice influence on fluoride releasing from glass-ionomercements. Methods: 27 specimens were constructed,divided into 3 groups: G1 (Maxion - R), G2 (KetacMolar 3M/ESPE) and G3 (Vittremer 3M/ESPE), and subdivided into 3 subgroups (n = 3): A (exposure to acidulated fluoride dentifrice – pH 4.5 / 7h /37 ºC), B (exposure to non-acidulated fluoridedentifrice / 7h / 37 ºC), C (control - exposure toartificial saliva). After exposing, the specimens were immersed into artificial saliva and the fluoridere leasing measured at the following time periods:1 to 14 days. Data were subjected to analysis ofvariance using the Statistical Package for Social Science (SPSS). ANOVA test was applied with levelof significance of 5% to compare the means and the behavior of each material. Results: The exposure to acidulated dentifrice showed fluoride releasing means values (ppm/mm2) that varied from 1 and 14days : G1A (0.269 to 0.204); G2A (0.394 to 0.038);G3A (0.080 to 0.123). The relationship among the G1 subgroups at T1 and G3 subgroups at T1and T14 was statistically significant. Conclusion:The acidulated dentifrice positively influenced onfluoride releasing of hybrid GIC but not on that ofconventional GICs.

The influence of storage time and pH variation on water sorption by different composite resins.

OBJECTIVE: The objective of this work was to assess the influence of storage time and pH cycling on water sorption by different composite resins. MATERIALS AND METHODS: Nine resin brands were selected and divided into groups: G1-ROK (SDI), G2-ICE (SDI), G3-GLACIER (SDI), G4-Z350 (3M/ESPE), G5-Z250 (3M/ESPE), G6-TPH 3 (DENTSPLY), G7-ESTHET X (DENTSPLY), G8-SUPRAFILL (SSWHITE), and G9-MASTERFILL (BIODINΒMICS). Ninety specimens, ten per group, were obtained using an aluminum matrix. Specimens measured 10 mm diameter × 2 mm width. The groups were divided into subgroups according to the immersion solution: A - control (n = 05) stored in artificial saliva pH = 7.0 and B-test (n = 05) submitted to seven consecutive days of pH cycling (cariogenic challenger) that consisted of immersion in a pH° = 4.3 solution for 6 h followed by immersion in a pH¹ =7.0 solution for 18 h and stored in artificial saliva pH = 7.0 until the end of the experiment. The specimens were weighed on six occasions: T 0 (after fabrication), T 1 (24 h), T 2 (7 days), T 3 (15 days), T 4 (30 days), T 5 (60 days), and then analyzed. The water sorption was determined by the weight difference between the specimens at the time intervals. RESULTS: The mean weight gain was exactly the same for both the subgroups within group G4. The highest means for the control subgroup were found in groups: G1, G5, G7, G8, and G9. For the pH cycling subgroup, the highest means were found in G2, G3, and G6; however, significant differences between the subgroups compared to the mean-weight gain were found for G1, G5, and G7. CONCLUSION: The water sorption of composite resins is dependent upon their storage time. The pH cycling created a significant impact on resins G1, G5, and G7. The sorption and solubility of composite resins vary according to their chemical composition.