Preheating improved the DC for all tested adhesive systems. Also, it promoted a decrease of water sorption/solubility, except for the XP Bond adhesive system.

From the beginning of the year 2020, the world was affected by a coronavirus disease (COVID-19) pandemic, caused by SARS-CoV-2, leading to a shortage of personal protective equipment (PPE) at a global level, and thus generating exposure of health professionals to this extremely contagious virus. Within this context, the present work seeks to present an alternative for the production of face shields ''face shields,'' in which it recommends its production ''in house'' through 3D printing, in principle initiated by Prusa Research, where we download your project of support of facial protectors, proceeding with printing through the 3D printer Gtmax3D Core H5. The authors produced a face shield in ABS, in a total time of 3 hours and 44 minutes. Thus, the model presented proved to be feasible, at a low cost, adding to the list of possibilities to produce inputs necessary to maintain the fight against this epidemic.

Adverse effects of tooth bleaching on dental structures remain a topic of discussion in the literature, and the search for protocols that reduce such reported adverse effects is ongoing. The goal of this systematic literature review was to determine whether the use of tooth bleaching gels with added minerals, such as fluoride, calcium, hydroxyapatite, potassium nitrate, amorphous calcium phosphate, and casein phosphopeptide-amorphous calcium phosphate, reduced the occurrence of the main adverse effects of tooth bleaching. The electronic database search identified 16 studies that evaluated the effects of bleaching gels with added minerals on enamel hardness and/or roughness, mineral loss, post-treatment sensitivity, morphological changes, and/or cohesive enamel strength. The findings of this review suggest that the addition of minerals to bleaching gels can contribute to the reduction of most adverse effects, mainly sensitivity, without affecting treatment efficiency. How to cite this article Borges B, Vale M, Afonso F, Assunção I. Can Enhanced Peroxides Decrease the Side Effects of Tooth Bleaching? A Systematic Review of the Literature. Int J Experiment Dent Sci 2014;3(2):84-91.

O edentulismo é um desafio extremamente frequente no dia-a-dia do cirurgião dentista. A busca de soluções funcionais e estéticas para estes casos têm proporcionado diversas inovações no mercado de materiais odontológicos como, por exemplo, os implantes dentais osseointegráveis, próteses, coroas e guias cirúrgicas. O aprimoramento de materiais e métodos em Implantodontia trouxeram possibilidades de intervenção, que por meio do planejamento digital e confecção de guias cirúrgicas 3D, concedem menor tempo de trabalho para assim, ofertar ao paciente maior conforto através de técnicas menos invasivas e cruentas, com a finalidade de reestabelecer a função, estética e condição biopsicossocial do paciente. Este caso clínico visa descrever o planejamento e instalação de implante dentário cone morse imediato (Drive, Neodent®, Curitiba, Brasil) utilizando a técnica com guia cirúrgica 3D (3D Studio – Planejamento Virtual da Face®, Natal- RN, Brasil), planejada através de tomografia computadorizada cone beam analisada através do software Blue Sky Bio LLC (Libertyville, Illinois), além da realização de enxertia com estrutura óssea mineral bovina (Lumina-Bone Fino, Criteria®, SP- São Paulo, Brasil) seguido da confecção de coroa unitária e instalação de carga imediata em área estética.

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Introduction: Microneedling has been used to treat different human connective tissue disorders, promoting an increase in the permeation of active ingredients, to favour local vascularization and collagen production. Objective: To investigate the effects of microneedling associated with the permeation of cosmetological actives (drug delivery) on facial rejuvenation. Method: This was a controlled clinical trial, in which 30 volunteers with facial aging were recruited and distributed into 2 groups. G1 was treated with microneedling with associated saline and G2 received microneedling with associated drug delivery (with growth factors) in the entire facial region (full face). Both groups received two treatment sessions with an interval of 30 days between them. For result evaluation, photos were clinically analysed before and after the interventions, the facial symmetry was verified through the measurement of angles and measurement of the facial region, and a histological analysis of the eyelid region of two patients who underwent surgery blepharoplasty was carried out. Results: Both groups presented satisfactory clinical results in the photographs’ visual analysis. In the evaluation of facial symmetry, G2 showed an improvement in the measurements of the paralateronasal L-projection, nasolabial F-crease, right and left lateral palpebral crease, with p<0.01. In the histological analysis, G2 showed higher collagen and elastin increase than G1, with greater predominance of better-quality collagen (type I) when drug delivery was performed. Conclusion: The association of microneedling with growth factors promotes a greater production of collagen fibres and connective tissue reorganization, compared to microneedling with no cosmetological assets.

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