Microcomputed Tomography
Mostrando 1-12 de 56 artigos, teses e dissertações.
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1. Physicochemical Properties and Bioactive Potential of a New Epoxy Resin-based Root Canal Sealer
Resumo O objetivo deste estudo foi avaliar as propriedades físico-químicas e o potencial bioativo de Sealer Plus, em comparação com MTA Fillapex, Sealapex e AH Plus. Tempo de presa, escoamento e radiopacidade foram avaliados com base nas normas ISO 6876. O escoamento foi também avaliado em área (mm²). A solubilidade e a alteração volumétrica dos ci
Braz. Dent. J.. Publicado em: 28/11/2019
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2. Probiotic Administration Increases Mandibular Bone Mineral Density on Rats Exposed to Cigarette Smoke Inhalation
Resumo O tabagismo é um dos principais fatores de risco para a doença periodontal, aumentando sua prevalência e gravidade. Os probióticos surgiram como uma alternativa para a prevenção e tratamento de muitas doenças, uma vez que podem modular a resposta imune do hospedeiro e promover a modificação do microbioma. Dessa forma, o objetivo do presente e
Braz. Dent. J.. Publicado em: 28/11/2019
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3. Antimicrobial Activity and Physicochemical Properties of Antibiotic Pastes Used In Regenerative Endodontics
Resumo A proposição deste estudo foi avaliar o pH, solubilidade e ação antimicrobiana da pasta de Hidróxido de Cálcio (HC), Pasta Diantibiótica (metronidazol+ciprofloxacina-DAP), Hidróxido de Cálcio adicionado a DAP (HC/DAP) e pasta Triantibiótica (metronidazol + ciprofloxacina + miociclina - TAP). a medição do pH e liberação de íons cálcio (
Braz. Dent. J.. Publicado em: 28/11/2019
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4. The use of a liner under different bulk-fill resin composites: 3D GAP formation analysis by x-ray microcomputed tomography
Abstract Gap formation of composite resin restorations is a serious shortcoming in clinical practice. Polymerization shrinkage stress exceeds the tooth-restoration bond strength, and it causes bacterial infiltration within gaps between cavity walls and the restorative material. Thus, an intermediate liner application with a low elastic modulus has been advis
J. Appl. Oral Sci.. Publicado em: 25/11/2019
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5. A comparison of the sealing abilities between Biodentine and MTA as root-end filling materials and their effects on bone healing in dogs after periradicular surgery
ABSTRACT Objectives: To compare the sealing ability and biocompatibility of Biodentine with mineral trioxide aggregate (MTA) when used as root-end filling materials. Methodology: The Cell Counting Kit-8 (CCK-8) assay was used to compare the cytotoxicity of MTA and Biodentine. Twenty-one extracted teeth with a single canal were immersed in an acidic silver
J. Appl. Oral Sci.. Publicado em: 07/10/2019
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6. Micro-CT evaluation of apical enlargement of molar root canals using rotary or reciprocating heat-treated NiTi instruments
Abstract Objective The aim of this study was to evaluate the root canal preparation and apical enlargement of molar root canals with rotary or reciprocating heat-treated nickel-titanium (NiTi) instruments, by using micro-computed tomography (micro-CT). Methodology Mesial root canals (n=48) of mandibular molars, with a curvature between 20° and 40°, wer
J. Appl. Oral Sci.. Publicado em: 12/08/2019
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7. Infrared Light-Emitting Diode (LED) Effects on Orthodontic Tooth Movement
Resumo O presente estudo tem como objetivo analisar o efeito da fototerapia LED na presença da hialinização e reabsorção radicular durante o movimento dentário ortodôntico (MDO) em ratos, e a mensuração da quantidade de movimento dentário. Oitenta ratos foram alocados em dois grupos: LED e Controle (CON), os ratos foram irradiados com um LED infrav
Braz. Dent. J.. Publicado em: 22/07/2019
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8. X-ray microtomography in comparison to radiographic analysis of mechanically damaged maize seeds and its effect on seed germination
ABSTRACT. Among the most relevant aspects of seed production, mechanical damage may affect seed germination and reduce health and vigor. This study introduces a noninvasive high-resolution imaging procedure for evaluating the mechanical damage to maize seeds and the effects on seed germination. Seeds with different levels of mechanical damage were evaluated
Acta Sci., Agron.. Publicado em: 28/03/2019
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9. Undernutrition impairs the quality of growth plate and trabecular and cortical bones in growing rats
Abstract Purpose: To investigate the effects of dietary restriction on the growth plate and long bone tissue in growing rats. Methods: Sixty male Wistar rats were randomly assigned to two groups: Control (Con) and Diet-restricted (Res). After weaning, the Res rats were offered 50% of the chow ingested by the control (ad libitum food intake). The animals
Acta Cir. Bras.. Publicado em: 18/03/2019
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10. Gliclazide reduced oxidative stress, inflammation, and bone loss in an experimental periodontal disease model
Abstract Objective The aim of this study was to evaluate the effects of gliclazide on oxidative stress, inflammation, and bone loss in an experimental periodontal disease model. Material and Methods Male albino Wistar rats were divided into no ligature, ligature, and ligature with 1, 5, and 10 mg/kg gliclazide groups. Maxillae were fixed and scanned usin
J. Appl. Oral Sci.. Publicado em: 21/02/2019
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11. Bone callus formation is highly disrupted by dietary restriction in growing rats sustaining a femoral fracture
Abstract Purpose: To evaluate the effects of food restriction on fracture healing in growing rats. Methods: Sixty-eight male Wistar rats were assigned to two groups: (1) Control and (2) Dietary restriction. After weaning the dietary restricted animals were fed ad libitum for 42 days with 50% of the standard chow ingested by the control group. Subsequentl
Acta Cir. Bras.. Publicado em: 14/02/2019
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12. Ultrasonic tips as an auxiliary method for the instrumentation of oval-shaped root canals
Abstract To evaluate the influence of novel ultrasonic tips as an auxiliary method for the rotary preparation of flattened/oval-shaped canals. Forty-five mandibular incisors were selected and divided into one of three experimental groups (n = 15): Group PFCP – ProDesign Logic 25/.05 + Flatsonic + Clearsonic + Prodesign Logic 40/.01; Group FCP – Flatsonic
Braz. oral res.. Publicado em: 11/02/2019