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URI permanente desta comunidadehttps://repositorioacademico.universidadebrasil.edu.br/handle/123456789/30
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Resultados da Pesquisa
Item Avaliação comparativa entre as técnicas All-on-four e Four-on pillars em planejamentos virtuais 3D associadas a cirurgias guiadas em maxilas atróficas(Universidade Brasil, 2021) Maia, Marcelo do Lago Pimentel; Magalhães, Daniel Souza FerreiraThorough technical knowledge and anatomical understanding are critical for optimal surgical results. The difficulty of complete maxillary surgery can vary significantly depending on the complexity of the anatomy or bone defect. Guided surgery is currently a relevant option for bringing to the patient fewer surgical complications and is directly related to 3D virtual planning for the success of the case. In this work, we analyze and compare two methods of planning guided in software for the manipulation of dental implants, associated with the All-on-four (A.F.) and Four-on-pillars (F.P.) techniques used in patients with atrophic maxillae. Forty-two images of totally edentulous patients were analyzed, 30 of which were planned using ImplantViewer software for volume assessment and ImageJ software for area assessment. The volumes were acquired in a CRANEX 3D volumetric tomograph model from the Soredex brand. In each planning, the height and width of the bone remnant was used as guidance and the implants were installed virtually. The average area of the Four on-pillars technique was 4.9x (p<0.0001) greater than the average area with the All on-four technique, this represents a difference of 489%, which in the same force applied by the jaw we have a 4.9x lower pressure, that is, a better distribution of forces on the jaws. It was not possible to notice a statistical difference between the success proportions (p=0.2542), showing that the techniques have a non-different (similar) success proportion. We conclude that the area formed in the Four-on-pillars surgical planning is larger than in the All-on-four planning and also that there is no technique with successful advantages over another, therefore the Four-on-pillars technique becomes an excellent option as a treatment for atrophic jaws.Item Avaliação dos testes de resistência em luvas de látex utilizadas em procedimentos odontológicos.(Universidade Brasil, 2024) Beserra, Leidiana Viana; Costa, Mardoqueu Martins daIn clinical practice, professional activities are subject to various occupational risks, among which biological risks stand out for involving pathogens such as bacteria, fungi, protozoa, viruses, and parasites. These agents can invade the body via cutaneous, digestive, and/or respiratory routes, manifesting according to the individual’s immune response. To ensure safe practice and minimize potential contamination, biosafety measures include adopting rigorous protocols and using Personal Protective Equipment such as latex gloves. However, these products can present variations in quality and mechanical resistance among different brands, which compromises the safety of professionals and patients. Therefore, this study aimed to evaluate the quality of latex procedure gloves used in dental clinics, focusing on their mechanical resistance and impermeability. Four brands were analyzed through visual inspection and integrity testing, impermeability testing, and tensile strength tests, which made it possible to determine the maximum force, maximum tension, and elongation before rupture. Dimensional tests revealed no significant difference in glove length among the manufacturers, and width remained consistent, with no notable differences between brands A and D. In the impermeability test, deformation was observed in all brands, with gloves A and B showing no tears, while gloves C had multiple holes and gloves D exhibited leakage near the cuff. Regarding tensile strength, a good stretching capacity before rupture was found, with a maximum force ranging from 12.16 N to 17.94 N (mean of 14.86±2.45 N) and a maximum tension ranging from 38.30 MPa to 56.52 MPa (mean of 46.81±7.76 MPa). Elongation values ranged from 907.04% to 1137.21%, with a mean of 1037.32±89.20%, indicating differences in performance among the analyzed brands and underscoring the importance of carefully selecting products with proven quality control. It is concluded that significant differences exist in terms of impermeability and mechanical resistance of latex gloves, emphasizing the need for a thorough evaluation of these materials to ensure the safety of professionals and patients, thereby helping reduce biological risks in clinical practice and serving as a basis for future research on the quality of this personal protective equipment.Item Avaliação comparativa entre as técnicas All-on-four e Four-onpillars em planejamentos virtuais 3D associadas a cirurgias guiadas em maxilas atróficas(Universidade Brasil, 2021) Maia, Marcelo do Lago Pimentel; Magalhães, Daniel Souza FerreiraThorough technical knowledge and anatomical understanding are critical for optimal surgical results. The difficulty of complete maxillary surgery can vary significantly depending on the complexity of the anatomy or bone defect. Guided surgery is currently a relevant option for bringing to the patient fewer surgical complications and is directly related to 3D virtual planning for the success of the case. In this work, we analyze and compare two methods of planning guided in software for the manipulation of dental implants, associated with the All-on-four (A.F.) and Four-on-pillars (F.P.) techniques used in patients with atrophic maxillae. Forty-two images of totally edentulous patients were analyzed, 30 of which were planned using ImplantViewer software for volume assessment and ImageJ software for area assessment. The volumes were acquired in a CRANEX 3D volumetric tomograph model from the Soredex brand. In each planning, the height and width of the bone remnant was used as guidance and the implants were installed virtually. The average area of the Fouron-pillars technique was 4.9x (p<0.0001) greater than the average area with the Allon-four technique, this represents a difference of 489%, which in the same force applied by the jaw we have a 4.9x lower pressure, that is, a better distribution of forces on the jaws. It was not possible to notice a statistical difference between the success proportions (p=0.2542), showing that the techniques have a non-different (similar) success proportion. We conclude that the area formed in the Four-on-pillars surgical planning is larger than in the All-on-four planning and also that there is no technique with successful advantages over another, therefore the Four-on-pillars technique becomes an excellent option as a treatment for atrophic jaws.