Leandro Hilgert

University of Brasília | UnB · Department of Dentistry

Objectives. To assess and compare the cumulative survival rate of amalgam and atraumatic restorative treatment (ART) restorations in primary molars over 3 years. Methods. 280 children aged 6–7 years old were enrolled in a cluster randomized controlled clinical trial using a parallel group design covering two treatment groups: conventional restorati...

To investigate the effectiveness of 3 caries-preventive measures on high- and low-caries risk occlusal surfaces of first permanent molars over 3 y. This cluster-randomized controlled clinical trial covered 242 schoolchildren, 6 to 7 y old, from low socioeconomic areas. At baseline, caries risk was assessed at the tooth surface level, through a comb...

The rationale for using resin infiltration is based on the success achieved in obliterating the diffusion pathways of demineralised enamel with a low-viscosity resin. After treating enamel surface with an acid, and rinsing and drying, this resin is infiltrated into the lesion’s porous enamel, filling the voids and arresting carious lesion progressi...

We aimed to compare subjective (S) vs. objective (O) selective carious tissue removal using hand-excavation versus a self-limiting polymer bur, respectively. A community-based single-blind cluster-randomized controlled superiority trial was performed. This is a 1-year-interim analysis. 115 children (age 7-8 years) with ≥1 vital primary molar with a...

The aim was to test the null-hypothesis that there is no difference in the cumulative survival rate of retained composite resin (CR) sealants and a high-viscosity glass-ionomer Atraumatic Restorative Treatment (ART) sealant in first permanent molars calculated according to the traditional and the modified retention assessment criteria over a period...

In conventional orthodontics, the adhesive fixation of brackets plays an essential role in the success of the treatment. However, the removal of these devices at the end of the treatment can pose risks of excessive wear to the external surface of the enamel, especially when rotary instruments are indiscriminately used to remove the resin composite...

Background Considering the development of new 3D printing technologies that use different printing techniques, further studies must be conducted to evaluate the impact of different printing systems on the mechanical properties of 3D-printed materials. This study aimed to evaluate the mechanical properties of 3D-printed materials for occlusal device...

Objectives This article presents case reports highlighting over‐treatments with resin composites, often misconceived as minimally invasive procedures. Clinical Considerations Tooth‐colored restorative materials, such as ceramics and composites, have found widespread application to correct problems related to tooth color, shape, and alignment. When...

Objective This study aimed to evaluate whether the use of desensitizing dentifrices containing obliterating agents can affect bond strength of eroded/abraded dentin. Methodology A total of 100 dentin samples were obtained from human molars. The teeth were cut into 3 mm-thickness discs and allocated in five groups (n=20), according to the toothpast...

Objectives: To evaluate the knowledge, attitudes, and practice (KAP) of dentists on Minimal Intervention Dentistry (MID). Data: Cross-sectional studies that analyzed KAP outcomes on MID principles were included. Sources: Eight databases (Cochrane, DOSS, Embase, LILACS, PsycINFO, PubMed, Scopus, and Web of Science) and the grey literature were...

Naringenin is a bioflavonoid mainly found in citrus fruits. It presents many pharmacological benefits, including a remarkable anti-inflammatory activity, but its oral bioavailability is poor. To overcome this drawback, this work proposes a transdermal administration of such bioflavonoid, considering its use in the chronic treatment of inflammatory...

Objective : Determine the best disocclusion guidance in occlusal splints (OS) to manage and treat temporomandibular disorder (TMD) and sleep bruxism (SB). Study Design : The research was conducted on 7 major electronic databases and 3 gray literature sources. We included randomized and non-randomized clinical trials, and before-and-after studies....

“Professor, qual sistema adesivo é o melhor?”. “Técnica incremental ou bulk fill?”. “Restauração direta ou indireta?”. “Qual o material forrador que devo usar em cavidades profundas?”. Acredito que muitos já receberam perguntas como essas ao terminar uma aula, uma palestra ou até no direct, após compartilhar um caso nas redes sociais. Provavelmente...

Aim: Root caries are a problem in modern dentistry, but the lack of guidelines regarding their management is notable. We aim to develop and adapt a guide based on the translation of the recommendations of the international consensus as outlined by the European Organization for Caries Research (ORCA) and the European Federation of Conservative Dent...

Additive manufacturing has the potential to become a revolutionary tool in the production of improved pharmaceutical products. Nevertheless, the development of 3D medicines by fused deposition modeling (FDM) is still based on a trial-and-error method. Hence, this work designed a short and sensitive protocol based on oscillatory rheology and mechani...

Statement of problem Applying stains to the intaglio surface of computer-aided design and computer-aided manufacturing (CAD-CAM) monolithic ceramic restorations has been proposed as an option to help mask darkened substrates. However, little is known about the effects of this procedure on the adhesion between the resin cement and the ceramic. Purp...

Much of dental treatment success relies on efficient communication between professionals and patients, among members of the professional team, along with the laboratory prosthesis technician involved in the treatment. Dental photography allows us to capture details and share certain aspects of a clinical case, such as tooth shape, texture, color, a...

This before-after experimental study evaluated the impact of dental treatment on the oral health-related quality of life (OHRQoL) in children aged 6-8 years from Paranoá, DF, considering the presence or absence of cavitated dentin carious lesions pre- and post-treatment. The responsiveness and sensitivity of the questionnaires were also investigate...

Objective: This cross-sectional study aimed to determine the prevalence of dental caries, dental fluorosis, and molar-incisor hypomineralization, and their associations in a group of Brazilian schoolchildren. Methodology: Adolescents (n=411) were evaluated by two calibrated examiners for dental caries (DC), dental fluorosis (DF), and molar-incis...

Objectives To test the demineralization potential, bonding performance, and dentin biostability when using hydroxy acids for etching enamel and dentin. Methods Surface microhardness, roughness and depth of demineralization were investigated after etching enamel and dentin with 35% glycolic acid (Gly), tartaric acid (Ta), gluconic acid (Glu), gluco...

Este capítulo trata dos aspectos relacionados à abordagem de lesões de cárie, desde os estágios iniciais até o avanço em dentina. Além disso, discorre sobre a manutenção das restaurações como um dos cenários de maior interesse.

The aim of this study was to evaluate whether dentists and dental undergraduate students know the terminology of the International Caries Consensus Collaboration (ICCC), and make their restorative treatment decisions regarding carious tissue removal accordingly. Data collection was performed using an electronic questionnaire, considering: a) profil...

Resumo: O sorriso com aparência agradável exerce grande influência na harmonia facial, eleva a autoestima e produz nas pessoas um sentido de autoafirmação social. Assim, fatores que interferem de modo significativo no sorriso, como dentes conóides, podem contribuir negativamente para o bem-estar e autoafirmação provenientes de um sorriso harmônico...

Objectives: The aim of this study was to compare the caries-preventive effect and the retention rates of sealants prepared with a new modified and a high-viscosity glass-ionomer cement (GIC) in recently erupted first permanent molars. MATERIALS AND METHODS: Fifty-six children (224 teeth) were included in a split-mouth randomised clinical trial. Al...

Introduction Selective (incomplete/partial) carious tissue removal is suitable for treating deep carious lesions in teeth with vital, asymptomatic pulps. In the periphery of a cavity, removal to hard dentin is performed, while in pulpo-proximal areas, leathery or soft dentin is left to avoid pulp exposure. As the decision of what contains ‘soft’ or...

Objectives To evaluate whether an association exists between school performance, quality of life, dental caries, and dental pain in children between 6 and 8 years of age. Methods All 6‐ to 8‐year‐old children enrolled in the second year of the six public schools in Paranoá‐FD were invited to participate in this cross‐sectional study. In total, 374...

Purpose: To test the hypothesis that, in high caries-risk children, supervised toothbrushing (STB) reduces visible plaque levels and gingival bleeding to a greater extent than does unsupervised toothbrushing (USTB) in comparable children and in low caries-risk USTB children over 4 years. Materials and methods: High caries-risk schoolchildren, ag...

This book aims to define the etiological factors in dental caries and to guide the clinician towards methods of caries prevention that are evidence based. The coverage includes discussion of the active role of the biofilm and the oral environment and emphasizes the multifactorial etiology of dental caries. The opening chapters describe the early de...

ABSTRACT Objective: To evaluate the influence of an application technique of a glass-fiber post using self-adhesive resin cements on the push-out bond strength and the presence of bubbles in the root thirds. The cements were either applied according to the manufacturer's instruction or using a commercial delivering system (Centrix), at which the ce...

Objective: To evaluate the influence of an application technique of a glass-fiber post using self-adhesive resin cements on the push-out bond strength and the presence of bubbles in the root thirds. The cements were either applied according to the manufacturer’s instruction or using a commercial delivering system (Centrix), at which the cement past...

Statement of problem: The precision of fit of chairside computer-aided design and computer-aided manufacturing (CAD-CAM) complete crowns is affected by digital impression and restorative material. Purpose: The purpose of this in vitro study was to evaluate by microcomputed tomography (μCT) the marginal and internal adaptation of composite resin...

Objective: The aim of this study was to measure the clinical crown, anatomical crown, and amount of gingiva covering the enamel of anterior maxillary teeth with soft tissue cone beam computed tomography (ST-CBCT) and thus propose a protocol for the application of this noninvasive method for the planning of esthetic crown lengthening procedures to...

Background: Failed restorations in primary teeth are not always re-restored. Is re-restoration not required anymore? Objective: To compare survival rates of primary molars with intact and defective amalgam and ART restorations. Methods: A total of 649 restored primary molars, of which 162 were assessed with defective restorations for mechanica...

This in vitro study evaluated in fibroblast cultures the direct cytotoxicity of universal, self-etching and etch-and-rinse adhesive systems according to the polymerization time. Paper discs were impregnated with adhesives and light-cured (10, 20 or 40 s). The discs were then immersed in culture medium to obtain the eluates for the experimental grou...

Background: Hemostatic agents have been used clinically in dentistry for many years to control bleeding. The authors reviewed scientific publications in which researchers investigated the effects of hemostatic agents on dentin and enamel surfaces and on bonding of adhesive systems and resin cements. Types of studies reviewed: The authors screene...

Objectives: The aim of this study was to determine whether a newly developed Caries Risk Assessment (CRA) form based on the Cariogram® software could classify schoolchildren according to their caries risk and to evaluate relationships between caries risk and the variables in the form. Material and Methods: 150 schoolchildren aged 5 to 7 years old...

To evaluate the influence of solvent evaporation in the kinetics of water diffusion (water sorption-WS, solubility-SL, and net water uptake) and nanoleakage expression of adhesive systems. Material and Methods: Disk-shaped specimens (5.0 mm in diameterx0.8 mm in thickness) were produced (N=48) using the adhesives: Clearfil S³ Bond (CS3)/Kuraray, Cl...

Objectives: To evaluate the bond strength of a newly developed universal adhesive system to dentin, as a 2-step etch and rinse system, and compare to commercially available systems. Materials and Methods: Twenty-five extracted third molars were sectioned to expose middle dentin. The teeth were randomly divided into 5 groups according to adhesive sy...

WIth the development of new adhesive systems and manufacturers reccomending shorter polymerization periods for dental adhesives, there is great concern about the quality of the bond. Objectives : The purpose of this study was to evaluate the effect of polymerization time on adhesive/resin dentin bond strengths. Materials and Methods: Seventy-five e...

This study evaluated the efficacy of 2 final irrigation solutions for removal of the smear layer (SL) from root canals of primary teeth, using scanning electron microscope (SEM) analysis. Thirty primary molars were selected and a single operator instrumented the canals. The initial irrigation was done with a 1% sodium hypochlorite (NaOCl) solution....

Objectives : The aim of this study was to evaluate the effectiveness of MicroCT in detection of voids, gaps and other artfacts in the interface of self-etching and conventional adhesive resin cements by using micro–computed tomography (micro-CT). Methods : The self-etching/adhesive resin cements RelyX U100/3M ESPE, Clearfil SA Cement/ KURARAY MEDIC...

Objectives: This study evaluated the effect of different exposure times on the degree of conversion (DC) of one experimental and four commercially available dental adhesives using Fourier Transform Infrared Spectroscopy with an Attenuated Total Reflectance (FTIR-ATR) device. Methods: The dentin adhesives were divided into 5 groups: Adper Single Bon...

Objective: To evaluate the influence of the solvent evaporation in the kinetics of water diffusion (water sorption-Wsp, solubility-Wsl, and net water uptake) of an experimental adhesive system compared to commercial products. Method: Three commercial adhesives (Clearfil S³ Bond (CS³)/Kuraray, Clearfil SE Bond – bond/control group (CSE)/Kuraray, Op...

Objectives: The purpose of this study was to evaluate the effect of different post-polymerization protocols on the degree of conversion (DC) of three commercially available composite resins. Methods: Fifteen 0.5mm composite resin disks (shade A2) were fabricated using Z350XT (3M ESPE, EUA), Opallis (FGM, Brasil) or Empress Direct (Ivoclar Vivadent,...

Objective: Evaluate the degree of conversion (DC) of translucent, bleach, and A3 shades composite-resin (CRs) light-cured with different curing units. Method: Five disks measuring 8mm in diameter x 0.5mm in thickness were made for a translucent, a bleach, and a dentin A3 shade of three different commercially available CRs brands (Z350XT, 3M ESPE;...

This study evaluated the influence of solvent evaporation conditions of acid-etching adhesives. The medium dentin of thirty extracted human third molars was exposed and bonded to different types of etch-and-rinse adhesives: 1) Scotchbond Multi-Purpose (SBMP) ; water-based; 2) Adper Single Bond 2 (SB) ; ethanol/water-based, and 3) Prime & Bond 2.1 (...

Natural tooth behaves much as a collection of mosaics that change color according to the type of light and media in which they are found, and it is this beauty of tooth composition and form that is the inspiration to those who seek to mimic tooth in dental restorations. This stunning atlas is the culmination of more than 25 years of dedicated study...

RESUMO Restabelecer a forma, a função e a estética após a fratura coronária traumática de um elemento dental é um desafio corrente e comum na prática da Dentística. Nos casos em que o fragmento fraturado está disponível, a técnica de colagem deve ser considerada, uma vez que julga-se ter excelente custo-benefício. Na realização do procedimento de c...

A tecnologia de planejamento e produção computadori-zada de restaurações dentárias pode ser utilizada para as mais diferentes situações clínicas. Isso, associado ao grande número de empresas fabricantes de equipamentos para o conceito CAD/ CAM, resultou em uma miríade de materiais restauradores para a confecção de peças protéticas sob esse conceito...

A odontologia restauradora atual vem sendo transformada pela utilização de sistemas automatizados. As fases de impres-são, planejamento e confecção de diversos tipos de restaurações podem ser realizadas com o auxílio de técnicas e equipamentos computadorizados, no conceito de produção chamado de CAD/ CAM. O presente artigo, que é primeiro de uma sé...

Adhesive procedures are essential to most restorative protocols used in modern dentistry. Increasing demand and constant interest in new products have stimulated dental manufacturers to produce new adhesive systems and marketing campaigns that announce fast and easy bonding. However, laboratorial and clinical studies show that, usually, ease of app...

To examine the etching efficacy of three self-etching systems to unconditioned enamel and to phosphoric-acid conditioned enamel using scanning electron microscopy (SEM), and to investigate the microtensile bond strength (muTBS) of three self-etching adhesives to unconditioned enamel used according to the manufacturers' instructions, on phosphoric-a...

To assess the fracture resistance of resin-based composites (Zeta, Targis, Solidex,) and ceramic (Vitadur Alpha) inlays luted to extracted sound human premolars and classify their fracture modes. 40 extracted sound human premolars were prepared to receive an indirect inlay restoration. They were divided into four different restorative materials gro...

Purpose : To assess the fracture resistance of resin-based composites (Zeta, Targis, Solidex,) and ceramic (Vitadur Alpha) inlays luted to extracted sound human premolars and classify their fracture modes. Methods: 40 extracted sound human premolars were prepared to receive an indirect inlay restoration. They were divided into four different restor...

Este estudo procurou investigar o grau de dureza de um cimento resinoso dual cure (RelyX ARC - 3M ESPE) quando polimerizado sem o contato com a luz e quando fotoativado sob três diferentes materiais restauradores indiretos (Solidex-Shofu, Empress-Ivoclar, sistema In Ceram Alumina - Vita), com dois tipos de fotopolimerizadores: luz halógena (XL 1500...