Does comsumption of staining drinks compromise the result of tooth whitening?

After dental bleaching procedures dentists commonly advise patients to reduce the consumption of beverages that may cause the teeth to stain, however, the effectiveness of teeth whitening may not be directly affected by diet. It was evaluated through in vitro study whether contact with dyes through in-office bleaching sessions with 35% hydrogen peroxide would influence the effectiveness of treatment. Sixty bovine incisors were randomly assigned into 5 groups (n = 12) according to contact frequency and type of dye solutions. All dental elements received three in-office bleaching sessions with 35% hydrogen peroxide one week apart. Except for GCTRL (control), all experimental groups were submerged in dyes (coffee or wine) for 5 min once a day. In groups GC24 and GW24 contact with the dyes was made from 24 hours after each bleaching session, while in groups GC72 and GW72, from 72 hours. The color was measured with a digital spectrophotometer. Data were expressed as statistics: mean and standard deviation. Contact with dyes during in-office bleaching treatment with 35% hydrogen peroxide did not influence the staining averages after three bleaching sessions. The speed of the whitening effect was influenced by contact with coffee from 24 hours after the sessions and with wine from 24 hours and 72 hours after the whitening session. The whitening result was reversed after one week for all groups, especially for groups that came in contact with red wine either 24 hours or 72 hours after session and coffee after 24 hours. Contact with dyes during in-office bleaching treatment did not influence the final staining averages after three bleaching sessions although there was influence on speed of the whitening effect between the sessions

Color stability of Bulk-Fill composite restorations

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. 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 ?E index of color variation. The P60 group had the lowest average ?E (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. Analysis of the color variation showed that the control group had better color stability than the Bulk-Fill resins evaluated

Dental Whitening: Self-Referred Needs versus Professional Indication

Objective: To analyze the self-reported need of patients compared to professional indications for tooth whitening. Material and Methods: Initially, 58 undergraduate students responded to a form that highlighted the question: "Do you think you need to have your teeth whitened?" Among those who answered positively to the previous question, ten individuals were photographed with their smiles. In addition, they were asked to point out, on the Vita 3D-Master scale, which color they believed their teeth had, a value that was compared to the actual color obtained by a spectrophotometer. Finally, the photographs were presented to dentists, who were asked about the indication or not of the whitening treatment. Results: Most interviewees (63.8%) self-reported the need for whitening, as well as there was a greater incidence of a positive indication among professionals (53.9%). Pearson's Chi-square test revealed a relationship between patient gender and the training course on the desire to have teeth whitened. Among the professionals, the specialty, as well as time since graduation, interfered in the indication for whitening. Conclusion: Professionals and patients share the aesthetic ideal directly related to light teeth; most patients self-perceive the color of their teeth darker than it actually is; the opinion about the color of the teeth has an extremely subjective character and varies greatly from one professional to another

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 polyme-rization were tested: light curing only (n=50); photopolymerization + autoclave thermopolymerization (n=50) and photopolymerization + microwave thermopolymerization (n=50). Each specimen was submitted to three indenta-tions 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 mi-crohardness of the composites studied. Considering the resin type, there was a varied behavior compared to thermo-polymerization, 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

Conservative smile enhancement: a case report and brief review on multidisciplinary approach in aesthetic dentistry

ABSTRACT The gingival contour, the color of the teeth and the presence of interincisal diastema are seen as unsightly factors, being highly harmful from a social point of view. The present study aimed to report a comprehensive and conservative esthetic treatment executed with a multidisciplinary approach in a 20-year-old female patient that presented darkened teeth with poor spacing and excessive gingival display while smiling, as well as present a brief literature review on multidisciplinary approach in esthetic dentistry. After clinical examination and diagnosis, a treatment plan was elaborated to meet the patient’s expectations with a conservative approach. After patient consent, therapy began with supervised home-based tooth whitening with 22% carbamide peroxide applied one hour/daily for 14 days, followed with gingival recontouring surgery and, after a healing period of 30 days, diastemas closure with direct composite resin technique, occlusal adjustment, finishing, and polishing. The multidisciplinary approach was fundamental for the accomplishment of the proposed treatment, achieving satisfactory esthetic and functional results

Influence of different adhesion strategies on glass fiber post retention

Failures in glass fiber post (GFP) retention may be associated with low adhesion achieved in root dentin.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).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.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)

Oral Health Care of Children and Adolescents with Different Impairments of Cerebral Palsy: Barriers and Challenges

Objective: To evaluate the barriers to access and oral health care faced by children and adolescents with Cerebral Palsy (CP) according to their motor impairment through the perception of caregivers. Material and Methods: A case series study was carried out at three health institutions in Pernambuco, Brazil. The study sample consisted of 94 caregivers of 5-to-18-year-old patients with CP, according to GMFCS (The Gross Motor Function Classification System). Data were collected using a semi-structured form to evaluate the barriers to access and analyzed statistically by the chi-square and Fisher exact tests, adopting a 5% level of significance. In addition, binary logistic regression was performed to determine the weight of the variables in explaining the outcome variable. Results: There were major difficulties involving transportation (p=0.04) and structural accessibility to dental services (p<0.01) among children and adolescents with severe CP. In addition, the more severe the CP, the greater the difficulty of accessibility (OR=4.09,) and the lower the income (OR=8.80), the greater the motor impairment. Conclusion: Despite the availability of access to dental services, low-income families have more severe CP patients, contributing to the daily difficulties already faced by them in oral health care

Prevalência do consumo de drogas lícitas e ilícitas no complexo presidiário de Recife- PE / Prevalence of licit and illicit drug use in the Recife-PE prison complex

A organização do Estado com o sistema carcerário é notícia constante nos meios de comunicação. O consumo de drogas entre os detentos e a violência existente no âmbito prisional estão entre os principais desafios encontrados. Esta pesquisa teve como objetivo mapear o consumo de drogas no maior Complexo Prisional em população do Brasil, situado em Recife- PE. Foi realizado estudo analítico transversal, com uma amostra calculada de 756 pessoas privadas de liberdade, previamente aprovado pelo Comitê de Ética em Pesquisa através do Parecer nº 2.159.052. Um questionário sobre dados sociodemográficos e consumo de drogas foi aplicado por um anotador previamente treinado. Na análise estatística foram realizados testes específicos para comparação de proporção nos níveis de fatores qualitativos. Observou-se que 49,1% da amostra consumia drogas ilícitas com predominância do uso da maconha, sendo verificados valores significativos da prevalência desse consumo entre os mais jovens, casados e que fazem uso concomitante de tabaco e bebida alcóolica. Os achados obtidos evidenciaram a necessidade de implementar programas de atenção como forma de erradicar o consumo de drogas entre os detentos. Programas de segurança para bloquear o tráfico de drogas dentro das prisões poderão trazer uma modificação na conduta da população carcerária

I Diretriz brasileira de cardio-oncologia pediátrica da Sociedade Brasileira de Cardiologia

Sociedade Brasileira de Oncologia PediátricaUniversidade Federal de São Paulo (UNIFESP) Instituto de Oncologia Pediátrica GRAACCUniversidade Federal de São Paulo (UNIFESP)Universidade de São Paulo Faculdade de Medicina Instituto do Coração do Hospital das ClínicasUniversidade Federal do Rio Grande do Sul Hospital de Clínicas de Porto AlegreInstituto Materno-Infantil de PernambucoHospital de Base de BrasíliaUniversidade de Pernambuco Hospital Universitário Oswaldo CruzHospital A.C. CamargoHospital do CoraçãoSociedade Brasileira de Cardiologia Departamento de Cardiopatias Congênitas e Cardiologia PediátricaInstituto Nacional de CâncerHospital Pequeno PríncipeSanta Casa de Misericórdia de São PauloInstituto do Câncer do Estado de São PauloUniversidade Federal de São Paulo (UNIFESP) Departamento de PatologiaHospital Infantil Joana de GusmãoUNIFESP, Instituto de Oncologia Pediátrica GRAACCUNIFESP, Depto. de PatologiaSciEL

ANÁLISE COMPARATIVA DO USO DE LISDEXANFETAMINA E DE METILFENIDATO NO TRATAMENTO DO TDAH

  Considering the increasing prevalence of Attention Deficit Hyperactivity Disorder (ADHD) and the need for effective and safe therapeutic interventions, this research aimed to conduct a comparative analysis between lisdexamfetamine and methylphenidate in the treatment of ADHD. To this end, a comprehensive qualitative literature review was conducted, using sources such as Scielo, Google Scholar, scientific journals, institutional repositories, and virtual libraries, without specific time period limitations. Thus, it was observed that both medications demonstrated efficacy in reducing ADHD symptoms. Lisdexamfetamine showed a more prolonged and consistent effect on dopaminergic neurotransmission and a potentially more favorable side effect profile, with fewer reports of severe adverse effects compared to methylphenidate. Methylphenidate, in turn, showed significant efficacy, especially in the short term. It is concluded that both lisdexamfetamine and methylphenidate are valid therapeutic options for the treatment of ADHD, with specific advantages in different clinical contexts. The choice between these medications should consider the individual characteristics of patients and the available evidence of efficacy and safety, contributing to the optimization of treatment and the improvement of the quality of life of patients with ADHD.Considerando a crescente prevalência do Transtorno de Déficit de Atenção e Hiperatividade (TDAH) e a necessidade de intervenções terapêuticas eficazes e seguras, esta pesquisa objetivou realizar uma análise comparativa entre lisdexanfetamina e metilfenidato no tratamento do TDAH. Para tanto, procedeu-se a uma revisão bibliográfica qualitativa abrangente, utilizando fontes como Scielo, Google Acadêmico, revistas científicas, repositórios institucionais e bibliotecas virtuais, sem limitação de período específico. Desse modo, observou-se que ambos os medicamentos demonstraram eficácia na redução dos sintomas do TDAH. A lisdexanfetamina apresentou um efeito mais prolongado e consistente na neurotransmissão dopaminérgica e um perfil de efeitos colaterais potencialmente mais favorável, com menos relatos de efeitos adversos graves em comparação ao metilfenidato. O metilfenidato, por sua vez, mostrou eficácia significativa, especialmente em curto prazo. Conclui-se que tanto a lisdexanfetamina quanto o metilfenidato são opções terapêuticas válidas para o tratamento do TDAH, com vantagens específicas em diferentes contextos clínicos. A escolha entre esses medicamentos deve considerar as características individuais dos pacientes e as evidências de eficácia e segurança disponíveis, contribuindo para a otimização do tratamento e a melhoria da qualidade de vida dos pacientes com TDAH