Browsing by Author "Astudillo Rubio, Daniela Andrea"

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Accuracy in marginal and/or internal adaptation of full-coverage fixed prostheses made with digital versus conventional impressions: an overview of systematic reviews and meta-analysis
(2023) Delgado Gaete, Bolivar Andres
Aim: The study aimed to verify compliance of the systematic reviews with the requirements established by the scientific community and demonstrate the validity and reliability of the systematic reviews conducted on the accuracy (marginal adaptation and/or internal adaptation) of the full-coverage fixed prostheses made with digital impressions versus conventional impressions. Methods: A search was performed for systematic reviews in three electronic databases, PubMed, Scopus, and Web of Science, as well as in the gray literature. In the search strategy, medical subject heading (MeSH) words were used in PubMed, and free terms were used for the titles and abstracts of each article. Each keyword was separated by the Boolean operator OR and later combined with the Boolean operator AND. Six systematic reviews were included for qualitative synthesis. To assess the methodological quality of the included systematic reviews, the AMSTAR 2 tool was used. Results: The search yielded 131 studies, of which 78 remained after removing duplicates. The title and abstract of each chosen study were assessed, and 22 articles were included for full-text reading. Finally, six studies were included, of which three studies were considered to have low confidence, while the other three were considered to have critically low confidence. In addition, the six SRs evaluated the adaptation or marginal fit, while only three studies measured internal adaptation. Conclusion: The use of digital impressions in single fixed prostheses maintains a marginal level within the limit of clinical acceptability; however, the methodological quality of systematic reviews is poor, according to the AMSTAR 2 tool.
Accuracy in the Marginal Adaptation and/or Internal Adaptation of Full-coverage Fixed Prostheses Made with Digital Impressions and Conventional Impressions: A Systematic Review
(2023) Astudillo Ortiz, Jaime Leonardo
Aim: The study aimed to verify compliance of the systematic reviews with the requirements established by the scientific community and demonstrate the validity and reliability of the systematic reviews conducted on the accuracy (marginal adaptation and/or internal adaptation) of the full-coverage fixed prostheses made with digital impressions versus conventional impressions. Methods: A search was performed for systematic reviews in three electronic databases, PubMed, Scopus, and Web of Science, as well as in the gray literature. In the search strategy, medical subject heading (MeSH) words were used in PubMed, and free terms were used for the titles and abstracts of each article. Each keyword was separated by the Boolean operator OR and later combined with the Boolean operator AND. Six systematic reviews were included for qualitative synthesis. To assess the methodological quality of the included systematic reviews, the AMSTAR 2 tool was used. Results: The search yielded 131 studies, of which 78 remained after removing duplicates. The title and abstract of each chosen study were assessed, and 22 articles were included for full-text reading. Finally, six studies were included, of which three studies were considered to have low confidence, while the other three were considered to have critically low confidence. In addition, the six SRs evaluated the adaptation or marginal fit, while only three studies measured internal adaptation. Conclusion: The use of digital impressions in single fixed prostheses maintains a marginal level within the limit of clinical acceptability; however, the methodological quality of systematic reviews is poor, according to the AMSTAR 2 tool.
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.
Influencia del consumo de azúcar en la aparición y progresión de la caries dental
(Universidad de Cuenca, 2022) Astudillo Rubio, Daniela Andrea
Primary stability with the osseodensification drilling technique for dental implants in low density bone in humans: a systematic review
(2022) Velez Astudillo, Romulo Andres; Alvarado Cordero, Jacinto José; Bravo Torres, Wilson Daniel; Astudillo Rubio, Daniela Andrea; Fereno Caceres, Klever Alejandro
Review question / Objective: - Does the osseodensification drilling technique increase primary stability in low-density bone? - The aim of the present investigation was to evaluate primary stability in dental implants in people with low density bone using the osseodensification technique. Condition being studied: The replacement of missing teeth through dental implants is currently the most practiced in dental clinics. The main criterion for determining the success of an implant is osseointegration, which is a direct structural and functional connection between vital bone and the prosthetic load-bearing surface of an implant. In the same way, primary stability must be obtained for a good lasting clinical result of the implant and to achieve this purpose, the bone density must be evaluated where the dental implant is to be placed. Salah Huwais in 2013 introduced a new osteotomy procedure (Oseodensification) for site preparation without removal and bone preservation. The Osseodensification process produces an autograft layer around the implant with the osteotomy surface, the autologous bone comes into contact through an endosteal device that accelerates osseointegration due to the nucleation of osteoblasts in the instrumented bone adjacent to the implant and has a greater primary stability due to contact between the device and the bone.
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.
Resistencia a la flexión de las restauraciones dentales posteriores impresas en 3D: una revisión narrativa de la literatura
(Universidad de Cuenca, 2023-10-12) Orellana Vélez, José Enrique; Gavilanes Sarmiento, Sebastián Anthony; Astudillo Rubio, Daniela Andrea
The objective of this narrative review was to compare and analyze published articles on the mechanical properties of 3D printed fixed dental restorations compared to restorations fabricated with CAD/CAM and/or conventional milled composite and/or acrylic resins and to answer the following research question: Do 3D printed posterior restorations have increased flexural strength compared to restorations made of composite resin and/or acrylic resin? Articles were searched using the following electronic databases: PubMed, GOOGLE SCHOOLAR. This literature review was structured based on the guidelines given by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). The PICO/PECO (Participant, Intervention/Exposure, Comparison, Outcome) focused question was: "Do restorations printed on 3D printers (I) for the posterior sector (P) have higher flexural strength (O) compared to restorations made of composite resin and/or acrylic resin (C)?". Of the two hundred and thirty-five titles, which were recognized after a primary search, fourteen articles were included in the analysis. The evidence available after performing this narrative review indicates that 3D-printed posterior fixed restorations have comparable mechanical behavior to CAD/CAM- engineered posterior fixed restorations in terms of flexural strength.
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
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.
Restauración de dientes tratados endodónticamente usando fibras de polietileno vs postes de fibra de vidrio
(Universidad de Cuenca, 2025-09-17) Calle Sarmiento, Adriana Estefanía; Maita Narváez, Karla Estefanía; Astudillo Rubio, Daniela Andrea
Endodontically treated teeth lose mechanical properties due to various factors, generating a decrease in the elasticity modulus and biochemical changes in the dentin, playing an important role in the risk of fracture; therefore, their restoration has been a major challenge after the search for a successful prognosis. For these reasons, a literature review was carried out to analyze two types of materials, fiberglass posts and polyethylene fibers, since these have been frequently used in current dentistry, seeking to reinforce the restoration in teeth with endodontic treatment. The research was based on identifying different factors that influence the failure of the treatment and in turn the properties of these materials and their contribution to fracture resistance. The results were focused on identifying that material that allows us to achieve a better restoration in endodontically treated teeth and in turn guarantees a lower risk of dental fracture.
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
Therapies for sleep bruxism in dentistry: A critical evaluation of systematic reviews.
(2023) Pacheco Sanchez, Mishelle Sthefanya
The aim of the study was to evaluate the methodological quality and the risk of bias of systematic reviews with regard to the literature on therapies for sleep bruxism (SB) in dentistry, applying the AMSTAR 2 (A MeaSurement Tool to Assess systematic Reviews) qualitative guide, as well as the effectiveness of various kinds of treatment of SB. Initially, a total of 1,499 articles were obtained from 4 databases and 2 websites. Relevant articles were obtained from the PubMed, Scopus, Cochrane, and Embase databases as well as from Google Scholar and OpenGrey. Six systematic reviews that met the eligibility criteria were included. The methodological quality of all systematic reviews, assessed with the AMSTAR 2 tool, was critically low. Regarding treatment effectiveness, 5 systematic reviews reported on pharmacological management (botulinum toxin type A (BTX-A), clonazepam and clonidine), 2 reported on oral appliances (OAs) (stabilizing splints and mandibular advancement devices (MADs)) and 1 study addressed the effects of biofeedback (BF). The results of the therapies were diverse and confusing. The available research is not conclusive, and does not show clear evidence or a consensus on the part of researchers on the most effective treatment for the management of SB. More research of better methodological quality is needed in this area.
Tratamiento de las lesiones de manchas blancas: un enfoque de mínima intervención
(Universidad de Cuenca, 2024-09-16) Sigüenza González, Kassandra Elizabeth; Cordero Coronel, Maria Isabel; Astudillo Rubio, Daniela Andrea
This case report explores minimally invasive alternatives to address a common problem in dental aesthetics, the presence of white spots on healthy teeth. The objective is to identify non-invasive techniques for the removal of these white spots. Two patients with white spot lesions on the vestibular surface were selected, and three methods were applied: microabrasion (Opalustre, Ultradent), infiltration (Icon Vestibular, DMG), and a combination of both, following the manufacturers' instructions. The results showed that the techniques effectively eliminated white spot lesions when they did not exceed 0.20 mm in enamel depth. In conclusion, it was determined that enamel alterations, whether due to early-stage caries, hypomineralization, or hypoplasia, can be successfully treated with microabrasion and infiltrating resins, preserving tooth structure without compromising its integrity.