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Browsing Especializaciones by Author "Astudillo Rubio, Daniela Andrea"

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    Efficacy of treatment of localized and multiple class III-RT2 gingival recessions: A systematic review
    (Universidad de Cuenca, 2023-08-03) Oyervide Soto, Angélica Catalina; Parra Martínez, Pablo Andrés; Astudillo Rubio, Daniela Andrea
    Background: Gingival recession is a problem that affects both the young population and the adult population, it is manifested by the exposure of the root surface due to a recession of the gingival margins, a large number of epidemiological studies have shown different results regarding the prevalence and severity of recessions. The main objective of the review continues to be associated with the choice of treatment for localized and multiple gingival recessions, having as a starting point that gingival recessions are defined as a more frequent aesthetic and functional defect within the oral cavity. This review followed the PRISMA guidelines. The searches were performed from PubMed, Cochrane, Embase and Web of Science without limitation of time or language until the year 2022. Of the 19 selected articles, only 6 articles were included due to the elimination of four due to being at risk of high bias. Among the main results, it is observed that the main techniques observed for the treatment of gingival recessions (single or multiple recession RT2/Miller III,) they are the free gingival graft, double pedicle flap, in addition to several modifications of the coronal displaced flap, coronal displaced flap in envelope and other currently proposed techniques such as the coronally advanced modified tunnel technique. However, despite the systematic review carried out, it is not possible to establish the most appropriate technique in the treatment of localized and multiple gingival recessions class RT2/Miller III, however, according to the authors studied, the coronally advanced flap technique (CAF) and its modifications, presenting better results in terms of root coverage.
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    Resistance of CAD/CAM composite resin and ceramic occlusal veneers to fatigue and fracture in worn posterior teeth: a systematic review
    (Universidad de Cuenca, 2023-01-25) Maldonado Torres, Karelys del Cisne; Espinoza Cárdenas, Juan Andrés; Astudillo Rubio, Daniela Andrea
    The aim of this systematic review is to summarize and analyze the scientific evidence evaluating the mechanical performance of Computer Aided Design, Computer Aided Manufacturing (CAD/CAM) composite resin and CAD/CAM lithium disilicate ceramic occlusal veneers, in terms of fatigue and fracture resistance, on severely worn posterior teeth. Currently, occlusal veneers are an alternative for treating worn posterior teeth. Even though there is scientific evidence demonstrating the good performance of lithium disilicate occlusal veneers, there are now more materials that are less brittle and have a modulus of elasticity more similar to dentin than ceramics, such as resin CAD/CAM blocks. Therefore, it is important to identify which type of material is best for restoring teeth with occlusal wear defects that can provide better clinical performance. This review followed the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines. We performed a search in the Pubmed, Embase, Web of Science, Scopus, Cochrane, Open Gray, Redalyc, Dspace, and Grey Literature Report databases, supplemented by a manual search, without time or language limitation, until January 2022, for studies evaluating the fatigue and fracture resistance of CAD/CAM composite resin Karelys del Cisne, Maldonado Torres Juan Andrés, Espinoza Cárdenas 4 and ceramic occlusal veneers. The quality of the full-text articles was analyzed according to the modified CONSORT criteria for in vitro studies, and 400 articles were initially identified. After removing duplicate studies and applying the selection criteria, the systematic review finally included 6 studies. The CAD/CAM composite resin occlusal veneers have similar mechanical performance in terms of fatigue and fracture resistance as CAD/CAM lithium disilicate occlusal veneers.
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    Resistencia a la tensión del dique de goma de varios espesores posterior a la esterilización
    (Universidad de Cuenca, 2024-11-27) Guzmán Rojas, Mariuxi Cecibel; Astudillo Rubio, Daniela Andrea
    Rubber dams play a crucial role in endodontics by isolating a tooth or group of teeth during dental procedures, effectively excluding moisture and oral contaminants during the endodontic treatment. This isolation creates a barrier and contributes to an aseptic field, thereby enhancing clinical outcomes and patient safety. Proper sterilization of rubber dams is essential to prevent cross-contamination and maintain material integrity, promoting a clean environment. The present study aimed to evaluate the tensile strength of rubber dams in two thicknesses following sterilization. A total of 60 perforated samples were divided into four groups of 15 units each. Two groups served as controls without autoclaving: Group 1 (0.13 mm) and Group 3 (0.20 mm). The remaining two groups underwent autoclaving: Group 2 (0.13 mm) and Group 4 (0.20 mm). The sterilization process involved a temperature of 121°C, a sterilization time of 20 minutes, a drying time of 20 minutes, and 2 atmospheres during a complete 40-minute cycle. A Shimadzu Latín América S.A model AGX-1kn Series Universal/Tensile Testing machine with Trapezium Lite software was employed to measure the tensile strength. The control groups (Groups 1 and 3) demonstrated superior tensile strength performance compared to the autoclaved groups (Groups 2 and 4). The autoclaved rubber dams exhibited a lower average tensile strength and less consistent results
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    Resistencia adhesiva de resina convencional a resina impresa en 3D: el papel de los tratamientos superficiales
    (Universidad de Cuenca, 2025-06-18) Idrovo Tinta, Thalia Silvana; Astudillo Rubio, Daniela Andrea
    Background: Various surface treatments such as air abrasion, hydrofluoric acid, universal adhesive, and silane have been used to enhance adhesion in dental restorations by modifying surface characteristics and increasing roughness. Objective: To evaluate the bond strength between conventional resin and definitive 3D-printed resin using different surface treatments. Methods: Seven experimental groups (n=10) were prepared, each receiving a specific surface treatment prior to composite resin repair. The control group received no treatment. Experimental groups were treated as follows: air abrasion (group A), air abrasion with hydrofluoric acid (group B), air abrasion with universal adhesive (group C), air abrasion, hydrofluoric acid, and adhesive (group D), silane (group E), and a combination of all treatments (group F). Shear bond strength tests and failure mode analyses were conducted. Results: All surface treatments significantly improved bond strength compared to the control group (9.89 ± 3.62). Group F showed the highest bond strength (23.62 ± 2.90) and mainly cohesive failures. Group A showed a bond strength of 19.41 ± 4.70, with more adhesive failures. The control group exhibited only adhesive failures. Conclusion: The combination of air abrasion, hydrofluoric acid, universal adhesive, and silane yielded the highest bond strength and cohesive failure pattern, emphasizing the importance of complex surface treatments to optimize adhesion and long-term stability in dental restorations.
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    Restauraciones provisionales en prótesis fija: revisión sistemática
    (2013) Astudillo Rubio, Daniela Andrea; Abad Coronel, Cristian Gustavo
    A systematic review of the literature was conducted through a search in digital databases on updates about the different materials used in the manufacture of provisional restorations. The comprehensive review of the literature was conducted in the period from March 2012 to March 2013, to provide contemporary scientific guidance on the subject. Reference publications were used as scientific articles, clinical and in vitro studies were found to carry out searches in Medline and Cochrane, articles published from 1970 to the present. The articles included in this review, involving topics on mechanical properties, marginal adaptation, gingival and pulpal response and color stability of different materials used in the interim treatment, which shall guide the clinical selection and processing techniques. Specific names of products and manufacturers are included in this report only when the original publications cited in the reference