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Introduction Energy drinks (ED) possess low pH and citric acid in their composition, making them potentially erosive beverages that can contribute to the high dental erosion rates found currently in the general population and also in young people. Objective To evaluate the mean pH and titratable acidity of commercial ED and the influence of a brand of ED on the superficial microhardness of human enamel. Material and method Ten commercial ED were selected and the pH of two lots of each ED with and without gas was obtained. Acid titration was conducted with the addition of NaOH aliquots until the pH 7 was reached. Eighteen human enamel specimens were allocated in three groups (N=6), Red Bull (RB), Red Bull Light (RBL) and distilled water (C), submitted to an acid challenge with the ED, six consecutive times, with 12 hours intervals, during three days. Knoop microhardness was measured before and after the acid challenge. Result All ED brands tested presented low pH levels ranging from 2.1 to 3.2. Regarding titratable acidity, it was found that the amount of base required promoting the neutralization of the solutions ranged from 1200μL to 3750μL. Samples of human enamel in the RB and RBL groups submitted to the acid challenge presented significantly decreased Knoop microhardness when compared with the group C. Conclusion All ED examined have potential to promote mineral loss due to the low pH and high titratable acidity. The ED analyzed promoted significant mineral losses on the dental enamel surface.

Previous studies have suggested that phototherapy may modulate orthodontic tooth movement and the incidence of root resorption. We aimed to identify a minimal dose-response relationship to LED therapy with regard to orthodontic tooth movement (OTM) and root resorption in rats. Forty-eight male Wistar rats were divided into six groups with equal and random distribution: control (C) no intervention; three daily LED irradiation (CLED); submitted only to OTM (RR); OTM and LED irradiation on the first day (LED1); OTM and two LED irradiation on the first and second days (LED2); and OTM and three LED irradiation on the first, second, and third days (LED3). Orthodontic appliance was installed in groups RR, LED1, LED2, and LED3 to promote OTM. Animals from groups CLED, LED1, LED2, and LED3 received LED therapy (940 nm, 4 J, 4 J/cm2) according to each group of treatment. After 7 days, all the animals were sacrificed. The jaws were fixed and scanned with microtomography (micro-CT). The micro-CT images were reconstructed on 2D and 3D models. These models were used to identify and measure root resorption number and dimensions (diameter, depth, and volume). The distance between the first and second molars was used to verify tooth displacement. The results showed that LED3 group had significantly lower number of root resorption. The root resorption dimensions (diameter and depth) had no significant differences among the experimental groups. LED3 group had significant tooth displacement in relation to C and CLED groups. In conclusion, three daily LED therapy doses are required to inhibit root resorption after appliance of orthodontic forces.

This qualitative study evaluated the acquisition of administration and management (A&M) competencies during graduation in a Brazilian dental school. Interviews were held with 13 dentists, whose opinions were examined with thematic content analysis. The perception about the acquisition of the competencies necessary to perform their jobs occurred when they were in the daily practice after graduation. Respondents reported being insufficiently trained, resulting in a series of difficulties to manage their daily professional activities after leaving dental school, particularly regarding financial issues. Different strategies are required and more effort needs to be placed on the development of A&M competencies to better prepare recently graduated dentists to enter the work market.

OBJECTIVE: Dental aesthetics is one of the areas of dentistry that has most advanced in terms of procedures, techniques and materials. Changes in color, shape, and texture are commonly cited as grounds for complaint, which are sometimes characterized by details, making the work challenging. The objective of this work is to report the planning and execution of a clinical case of smile harmonization with ceramic laminates for remodeling smile.CASE DESCRITION: A male patient consulted a specialist to refine the appearance of his smile that already had a satisfactory pattern of color and texture. The planning was started using digital smile planning, followed by diagnostic waxing of the elements involved. The planning approval took place through the Mock up. The dental grinding performed was minimal and followed a silicone wear guide. The pieces were made in lithium disilicate and installed under absolute isolation according to the cementing protocol of the material. The finishing and polishing completed the installation of the pieces, removing excesses and guaranteeing periodontal compatibility.CONCLUSION: We conclude that indirect aesthetic treatments currently have a minimally invasive character and are highly accepted due to their ability to remodel the smile with perfection and naturalness.