Especialización Rehabilitación Oral

URI permanente para esta colecciónhttp://hdl.handle.net/11634/220

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Resistencia a la fractura de dientes tratados endodónticamente restaurados con dos materiales de fibra de vidrio
(Universidad Santo Tomás, 2026-02-06) Bracho Rincón, Beatriz Elena; Rangel Maldonado, Jeimmy Rocío; Rodríguez Gámez, Angélica; Güiza Cristancho, Edgar Humberto; Universidad Santo Tomás
Introduction: The restoration of endodontically treated and structurally compromised teeth remains a clinical challenge, particularly due to the lack of solid evidence regarding the mechanical resistance of the most commonly used restorative materials. Objective: To compare the fracture resistance of endodontically treated teeth with substantial structural loss, restored with fiber-reinforced composites using fiberglass ribbons versus fiberglass posts. Methodology: Forty bovine mandibular incisors were prepared and received root canal treatment. The canal filling was removed up to 50% of the root length in the teeth restored with posts, and up to 4 mm in the teeth restored with fiberglass ribbons, leaving a 2-mm ferrule to place the posts and fibers. The samples were divided into two groups according to the type of restorative material: fiberglass ribbons and fiberglass posts. The fiberglass posts (Fiber Post Coltene) ® were cemented with a dual-cure resin cement (Paracore, Coltene) ®, which was also used for the core build-up. The fiberglass ribbon used was Interlig (Angelus) ®, and the core build-up was performed with Paracore (Coltene) ®. All procedures were carried out in accordance with the manufacturers’ instructions. All samples were subjected to compressive loading, and both the fracture load and the fracture pattern were recorded. Data were entered into an Excel spreadsheet and analyzed using STATA 17. Results: The compressive tests conducted with the Shimadzu universal testing machine (AGS-X model, Japan) showed notable differences between the two materials: the fiberglass ribbons required less force to reach fracture, although the differences were not statistically significant. Regarding the type of fracture, the results favored the posts (p = 0.004), while the ribbon group showed a higher prevalence of unfavorable fractures. In terms of fracture location, coronal fractures were more frequent in the post group (p = 0.010), whereas unfavorable fractures in the ribbon group tended to occur in the cervical and middle thirds. Conclusion: Fiberglass posts demonstrate greater resistance to compressive forces, and the fractures observed in teeth restored with posts were more favorable.
Evaluación clínica de pilares con base de titanio Revisión sistemática y metaanálisis
(Universidad Santo Tomás, 2025-09-04) Salas Mendoza, Katiuska Lilieth; Gutierrez Sanguino, Andrea Fernanda; Guzman Vargas, Lina Alexandra; Ladino Montenegro, Luis Gabriel
Introduction: Tooth loss impacts function, aesthetics, and overall health, requiring treatments that consider these factors. Dental implants have proven highly effective in oral rehabilitation, with high success rates. Titanium is the standard material due to its osseointegration and durability, although zirconia offers aesthetic advantages. However, mechanical, biological, and aesthetic complications may arise. The selection of the abutment and the appropriate connection influence the functional stability and longevity of the restoration. Objective: To evaluate the clinical performance of titanium-based implants in terms of survival, marginal bone loss, and peri-implantitis through a systematic review of randomized clinical trials published between 2020 and 2024, synthesizing the literature through a meta-analysis. Materials and methods: A systematic review and meta-analysis was conducted on Ti Base abutments with 12 months of follow-up. The study population included randomized clinical trials in databases such as PubMed, Scopus, Web of Science, Cochrane Library, Embase, and Google Scholar. RoB 2 was used to assess the risk of bias, and RevMan was used for statistical analysis. Sixteen studies were included in the systematic review and three in the meta-analysis. Data collection was organized in Excel, and irrelevant documents were discarded. Conclusions: Titanium abutments have high survival rates (98.7%–100%), low incidence of peri-implantitis, and insignificant marginal bone loss. The lower probing depth observed at 4 and 5 years suggests greater peri-implant stability. Long-term follow-up is recommended to evaluate bone evolution and peri-implant health
Reproducibilidad de los movimientos funcionales excéntricos evaluados mediante articulador analógico semiajustable vs un articulador virtual
(Universidad Santo Tomás, 2025-09-05) Estupiñán Quintero, Andrés René; Díaz Morantes, Luis Carlos; Villegas Reyes, Nathalia; Cuellar Rodríguez, Lina María
Introduction: This study evaluated the reproducibility of functional eccentric mandibular movements by comparing a semi-adjustable analog articulator (Whip-Mix 2240) with a virtual articulator using Exocad software, within the field of oral rehabilitation. Materials and methods: Each patient underwent both analog and virtual articulator mounting, recording left and right lateral movements as well as maximum protrusion. An observational cross-sectional analytical study was conducted with a sample of 12 patients from the Dental Clinic at Universidad Santo Tomás, Bucaramanga campus. Objective: Reproducibility of eccentric functional movements evaluated by means of a whip-mix 2240 semi-adjustable analog articulator vs. a virtual articulator used in the area of oral rehabilitation. Results: were analyzed using intraclass correlation coefficients (ICC) and Lin’s concordance correlation coefficients (CCC). Findings revealed excellent agreement for right and left lateral movements (ICC = 0.931 and 0.969, respectively), confirming the virtual articulator's precision in reproducing these motions. In contrast, maximum protrusion showed only moderate agreement (ICC = 0.487) and was not statistically significant, indicating higher variability in this movement. Conclusions: Virtual articulators proved to be a reliable and efficient technological alternative to traditional analog methods, offering advantages such as reduced material usage, enhanced clinician-technician communication, and optimized digital workflow through CAD/CAM systems. However, limitations were identified related to operator experience, highlighting the need for larger-scale studies to support the broader clinical application of this digital approach.
Bruxismo autoinformado y asociación con la calidad del sueño en estudiantes de odontología de la Universidad Santo Tomás de Bucaramanga
(Universidad Santo Tomás, 2025-08-27) Barrera Márquez, Sharon Catalina; Castaño Zapata, Yelitze; García Gutiérrez, Mónica
Objective: To identify the relationship between self-reported bruxism and sleep quality in first- to tenth-semester undergraduate dentistry students at Santo Tomás University, Bucaramanga campus, during the 2025 academic year. Methodology: An observational, cross-sectional, analytical study will be carried out with a population composed of undergraduate dental students of the Universidad Santo Tomás Bucaramanga in the academic year 2025, selected using a stratified random sampling design. A survey divided into the application of the self-reported bruxism evaluation scale and the Pittsburgh Sleep Quality Index (PSQI) will be applied to them, in order to subsequently find the association. Results: This study aimed to determine the association between self-reported bruxism and sleep quality among dental students at Universidad Santo Tomás, Bucaramanga campus. A quantitative, observational, cross-sectional, and analytical study was conducted with a sample of 357 students. Two validated instruments were used: a self-reported bruxism scale (Cronbach’s alpha = 0.866) and the Pittsburgh Sleep Quality Index (PSQI). Results showed that 4.5% of students had bruxism, 5% had probable bruxism, and 90.5% were classified as having unlikely bruxism. Sleep disturbances were present in 80.4% of the sample, with significantly poorer sleep quality in female students (p<0.001). Significant associations were found between bruxism and factors such as gender, academic workload, physical activity, use of stimulating substances, and the presence of anxiety and/or depression. Regular exercise was identified as a protective factor, whereas alcohol and tobacco consumption and mental health conditions were associated with poorer sleep quality and higher rates of bruxism. Conclusion: In conclusion, a significant association exists between sleep quality and self-reported bruxism.
Evaluación de la resistencia compresiva en tres tipos de resinas bulk. Estudio in vitro
(Universidad Santo Tomás) Baldovino Badillo, Marlon Alfredo; Romero Ramírez, Ingrid Alejandra; Zambrano Ojeda, María Fernanda; Toloza Ramírez, Emelina
Introduction: compression resistance is a characteristic of resins that refers to the ability of a material to resist compressive forces before fracturing. For this reason, a restorative material is sought that has physical, chemical and mechanical properties that promote optimal performance in the replacement of lost dental tissue Objective: describe the compressive strength of three types of bulk resins photopolymerized with the same lamp system for 10 seconds. Methodology: in vitro experimental study with a quantitative approach whose sample consists of 93 resin sheets designed under the same parameters distributed in 3 groups, each with 31 bulk resin samples; • Group 1: Filtek one Bulk 3m resin, Group 2: Bulk Fill Tetric Ceram ivoclar, and Group 3: Opus Bulk Fill – FGM, with 4mm monobloc apposition and photos polymerized for 10 seconds with a VALO GRAND LED type curing unit. ultradent (Power Plus 1600mw/cm2, to then be subjected to compressive forces using the Shimadzu testing machine until fracture. Finally, the statistical analysis was carried out through the Anova / Kruscal Wallis tests. Results: The maximum Compressive strength was 1771.87 N with an SD (±390.5). The resin that reported the highest compressive residence was filtek one Bulk-3m, followed by filtek one Bulk-tetric ceram and Opus Bulk Fill–. FGM The maximum fracture time was 101.5 seconds with an interquartile range of 79.7 – 121.9 seconds corresponding to the filtek one Bulk-tetric ceram resin Conclusion: There are statistically significant differences in the levels of compressive strength between the three types of bulk resin, with Filtek One and Tetric EvoCeram presenting slightly higher values than Opus Bulk Fill
Evaluación de la adaptación marginal de incrustaciones en resina compuesta cementadas con cemento resinoso dual y resina precalentada
(Universidad Santo Tomás, 2024-11-20) Pineda Méndez, Ángela María; Gómez Jiménez, Karen Dayana; Fernández Carvajal, María Consuelo; Villamizar Amaya, Ingrid Yadira
The main cause of failure of inlays is microleakage associated with marginal seal, which can be related to the type of cement used. There are multiple types of cements available on the market; however, their choice has been controversial in recent years. Aim: yo evaluate the marginal fit of composite resin inlays cemented with preheated resin and dual-cure resin cement. Materials and Methods: an in vitro experimental study was conducted using 30 premolars with healthy crowns. They were divided into two equal groups (n=15) for the subsequent cementation of resin inlays. Group 1 was cemented with preheated resin (ENA Micerium) and Group 2 with resin cement (Duolink, Bisco). A measurement of the gap between the restoration and the tooth was immediately carried out using a scanning electron microscope, and they were subjected to thermocycling (10,000 cycles) simulating one year of aging. Subsequently, the measurement process was repeated, allowing for a comparison between these values. Results: the resin cement showed a median initial misfit of 86.3 µm and 105.7 µm after being subjected to the aging process, resulting in greater deterioration of the material over time compared to the preheated resin, which remained more stable, with a median initial misfit of 83.2 µm and 88.3 µm after one year. Conclusions: The preheated resin showed better marginal fit values compared to the resin cement at time zero and after one year.
Resistencia compresiva de tres materiales para elaborar placas oclusales, sometidos o no a un proceso de envejecimiento acelerado. Estudio in vitro.
(Universidad Santo Tomás, 2024-11-26) Cárdenas Rodríguez, Jessica Tatiana; Rodríguez García, Silvia Alejandra; Medina Méndez, Darwin Moisés; Ramírez Bonilla, Jhoan Antonio; Quijano García, Maria Alexandra
Introduction: The most used non-invasive treatments for temporomandibular disorders due to their safety and convenience are occlusal splints. These devices can be made from various materials available on the market. Objective: To determine the fracture resistance of three materials used for fabricating occlusal splints, either subjected to or not subjected to an accelerated aging cycle of 6 months. Methods: Three materials commonly used for making occlusal splints were selected: Prizma 3D bioSplint LCD resin, self-curing acrylic, and Erkoloc. The splints were divided into two groups: the first group consisted of splints subjected to compressive forces using the Instron machine, and the second group consisted of splints subjected to compressive forces plus accelerated aging. A total of 54 splints of different materials were used, with 18 units each of the 3 types (self-curing acrylic, Prizma 3D bioSplint LCD resin, and Erkoloc). Nine units were subjected to accelerated aging using the BEGO hygrotherm machine for a 6-month cycle (27 splints). Subsequently, all 54 splints were subjected to compressive forces using the Instron machine, where the maximum deformation time in seconds, maximum deformation in millimeters, and force achieved in kilonewtons were evaluated. Finally, the splints were examined under a stereomicroscope to check for surface alterations. Results: The materials exhibited statistically significant differences in the evaluated variables (time, force), except in the force required to achieve maximum deformation after the aging process, where no significant differences were observed. It was found that Erkoloc is the material that exhibited the greatest deformations with less force and longer time to achieve them, indicating a more moldable and deformable material, though this capability is somewhat reduced after aging. The splints made from acrylic resin had more bubbles when observed under the stereomicroscope, and surface defects were observed in all splints of different materials, both those subjected to aging and those that were not.
Evaluación del Efecto de Dos Sistemas de Pulido en la Rugosidad Superficial de la Cerámica Disilicato de Litio: Estudio In Vitro
(Universidad Santo Tomás, 2024-03-13) Canosa Alvarez, Andrea Carolina; Perez Escalante, Daniela Lizbeth; Ochoa Pedroza, Rodolfo
This in vitro study aimed to assess the impact of two polishing systems on the surface roughness of lithium disilicate ceramic, a crucial material in restorative dentistry. Initially, 30 dental samples were divided into two groups, each subjected to a different polishing system. Surface roughness was evaluated using a surface analyzer, and parameters such as Ra were employed to measure roughness amplitude. The collected data underwent statistical tests (Shapiro-Wilk and Sign test). The results revealed significant differences in surface roughness between the two polishing systems, indicating a direct influence on the surface properties of lithium disilicate ceramic. Comparison with previous research, such as Ramon's study (2022) and García-Cuerva et al. (2021), highlights consistency in the importance of the polishing system in surface roughness, though methodological differences are acknowledged. The clinical relevance of these findings lies in their contribution to optimizing polishing processes that can enhance the mechanical and aesthetic properties of lithium disilicate ceramic dental restorations. These results provide a solid foundation for future research and clinical practices, emphasizing the need to carefully consider the selection of the polishing system in dental practice to ensure optimal outcomes in terms of surface roughness and, consequently, the longevity and performance of dental restorations.
Análisis comparativo in vitro entre dos sistemas adhesivos en el sellado dentinario
(Universidad Santo Tomás, 2023-11-20) Rey Bedoya, Andres Felipe; Medina Correa, Raul Yesid; Saavedra Cantor, Angy Katherine; Jarpa Remaggi, Patricio Javier
There is a wide variety of generations present on the market, but, without parallelism in effectiveness claims, for this reason, the research considers an approach within the context of oral sensitivity and its intrinsic relationship with two currently available adhesive systems, with the purpose of determining the coverage area of the biomaterial through a comparative analysis, establishing a facilitator parameter in the choice of material and in the treatment of this condition by specialized personnel. The present in vitro experimental study analyzed 40 healthy permanent premolars distributed in two equal groups and carved with a depth thickness of 1.5 mm. The Single bond Universal adhesive system (3M ESPE) was applied to the group; and to group B the adhesive system called Prime&Bond Universal™ (Dentsply Sirona), to later analyze its coverage on the dentinal complex with the help of the Tescan brand scanning electron microscope, Mira 3 model (MEB) at 5000X and 10000X.The images were divided into a grid of 25 segments to be analyzed according to the number of unexposed tubules per segment. Results: The percentage of general coverage of the area observed in the two adhesive systems at 5000X was 82.7% DE (±25.3), and 85.9% DE (±23.6) at 10000. Individually; 75% of the 3M Single Bond Universal adhesive samples were observed with high coverage, while in Prime&bond universal™ adhesive it occurred in 65% at 5000X and it was observed that the high coverage frequency was 85%, while in Prime&bond universal™ was 80% at 10000X, in both cases no significant differences were found. It is concluded that both the 3M Single bond universal adhesive system and the Prime&bond universal™ achieved a high percentage of coverage of the dentinal tubules. Keywords: Adhesive, coverage, dentin, permanent premolar, dental biomaterials.
Comparación in vitro de la resistencia a la fractura del muñón reconstruido con dos tipos de resina: Bulk vs resina tipo Core con poste en fibra de vidrio en dientes premolares tratados endodonticamente
(Universidad Santo Tomás, 2023-11-19) Gonzalez Perez, Giovanna Catalina; Moncada Ferreira, Daniel Yesid; Garcia Gutierrez, Monica
Problem: Endodontically treated teeth that present a large loss of tooth structure are generally rehabilitated with intra-radicular structures such as posts or cores, and traditionally with a full coverage crown-type restoration. However, the physical-mechanical properties of intraradicular retainers increase the risk of vertical and horizontal fractures in the two sites of highest stress concentration: at the level of the cervical and apical third. Objective: To analyze the fracture resistance of the stump prepared for a full crown reconstructed using three different restorative materials: Bulk Resin (Group A), Bulk Resin + Fiberglass Post (Group B), Core Type Cement + Fiberglass Post glass (Group C). Results: The type of restoration that shows greater resistance to compressive forces is group B (post + bulk resin) compared to group A (bulk) and group C (Core + post). Regarding the resistance of the number of roots, according to the results: single-rooted teeth have better resistance and possibility of recovery compared to two-rooted teeth. Conclusions: There are no significant differences between the three materials used in the study, that is, the results regarding compressive resistance were similar and it is up to the clinician to make decisions about what type of treatment it entails depending on the case.
Resistencia a la fractura ante fuerzas compresivas de dos resinas poliméricas para carillas indirectas cementadas con un espesor de 0,5 mm
(Universidad Santo Tomás, 2023-11-17) Álvarez Quintana, Laura Viviana; Mantilla Mantilla, Daniela; Mujica Serrano, Mayra Consuelo; Rodriguez Cuellar, Lina María
Problem. One of the most frequent failures when using resin in clinical practice is fracture and currently choosing the appropriate material continues to be a challenge. Aim. To analyze the fracture resistance to compressive forces of two polymer resins in indirect veneers with a thickness of 0.5 mm. Method. The sample was made up of 60 extracted premolars. They were divided into two groups. A group that had veneers made with 3 M Z350 resin, and with Tetric N-Ceram resin from Ivoclar. Acrylic resin cubes measuring 4.5 x 4.5 cm were made, where the teeth were positioned vertically. The preparation of the dental substrate and the veneers was carried out taking into account the protocol of each commercial house. Once this process of manufacturing the veneers was completed, it was taken to a universal testing machine (Instron). Results. The average fracture time for the two types of resins in the study was 38.9 seconds, and the average fracture resistance was 916.1N. 3M resin had 56.7% adhesive failure. For Ivoclar, 66.7% presented cohesive failure. Conclusions. Both present similar fracture resistance values and favorable behavior with respect to maximum masticatory force. The type of failure that occurred most frequently in the 3M Z350 resin was adhesive failure, different from the Tetric-N ceram resin whose most frequent failure was cohesive.
Adaptación y resistencia compresiva de dos materiales en elevación de margen cervical en restauraciones en resina de terceros molares superiores
(Universidad Santo Tomás, 2023-11-08) Ariza Sedano, Juan José; Martínez Martínez, Camilo Andrés; Pérez Santiago, Katherine; Sánchez Forero, Manuel Eduardo; Rodríguez Cuellar, Lina María
Problem: Proximal caries that extend below the enamel cement bond and expose the cervical margins below the gingival tissues are challenging, due to the difficulty of accessing this area to adequately prepare the cavity, ensure appropriate impressions and apply adhesive bonding procedures. Objective: In this research, an analysis of the materials used to fill the interproximal cavities and their interaction with the final resin is carried out, focusing on two specific characteristics, resistance to compression and mismatch. Method: 60 dental specimens of upper third molars with class 2 caries affecting the occlusal surface in pits and fissures and a distal tray extending 2 mm below the cervical line were prepared. They were divided into three groups, without elevation of the cervical margin, with elevation of the cervical margin with resin, and with elevation of the cervical margin with glass ionomer filling the gingival cavity subjected to a force of 800 Newtons, confirming the resistance and degree of adaptation of these. filling materials with the final restoration. Results: Regarding the fractures of the samples, it is important to highlight that only 20% were fractured, that is, a total of 12. Of that amount, 3 were fractured in the dental substrate, 3 in the resin and fluid, and one total of 6 in Equia forte glass ionomer. Conclusion: The maladaptation indicates that in the samples with the elevation process a greater maladaptation is evident than in the direct restoration, because 75% of the samples with margin elevation show maladaptation in the coronal Fx, the tooth and the restoration and restoration and elevation, against only 30% of the samples with restoration that suffer a mismatch between the tooth and the restoration.
Intervención educativa mediada por TICS dirigida a pacientes que asisten a la clínica de la facultad de odontología de la Universidad Santo Tomás de Bucaramanga
(Universidad Santo Tomás, 2023-08-25) Santiago Sanz, Pedro Luis; Rodríguez Cuellar, Lina María
Introduction: dental implantology is currently booming because it is considered the most predictable therapeutic option in the total or partial replacement of missing teeth, reaching favorable success rates. On some occasions, for patients, the verbal explanation offered about the proposed implant treatment is not clear enough, generating uncertainty and discomfort, which is why the present investigation is carried out. Objective: to analyze the effect generated by the educational intervention mediated by ICTs aimed at patients attending the clinic of the School of Dentistry of the Santo Tomas de Bucaramanga University. Methods: the present quasi-experimental analytical study applied a survey designed by the researcher; with 11 questions related to basic knowledge about dental implantology to 80 patients who were undergoing implant-supported treatment in order to assess the level of initial knowledge. Subsequently, a didactic tool (video) designed by the researchers is presented which contains information on dental implantology and 20 days later the survey is carried out again to determine the level of knowledge after the application of the educational too. Results: the initial level of knowledge was excellent in 56.25% and good in 40%. After the application of the didactic tool, the level of knowledge improved, reaching the category of excellent in 98.75 of the sample. The highest percentage of incorrect responses in both the initial and final surveys was evidenced in the question related to the loss of the implant with percentages of 35% and 11.25%, respectively. Conclusions: the final survey showed an increase in the level of knowledge of 42.5% of the patients after having received the information transmitted through ICT on oral implantology.
Análisis In Vitro de la precisión de ajuste de pilares fabricados por Técnica de Adición y Sustracción sobre Implantes, comparación de microfiltración
(Universidad Santo Tomás, 2023-03-30) Mora Fernández, Dayana Andrea; Tapias Devia, María Fernanda; Torres Navarro, Diana Gisela; Rugeles Páez, Nohora Camila
Introduction The literature reveals a high success rate for dental implants as a long-term treatment option for the rehabilitation of missing teeth. However, even when good results are shown, different factors may influence the marginal bone loss of the implant, among which are the design of the implant, platform exchanges, surface treatment, the type of implant-abutment connection and biofilm formation in the micro-gap at the implant-abutment interface. Objective Analyze the precision of the manufactured pillars, with CAD/CAM technology, using the addition and subtraction technique corresponding to laser sintering and machining processes. Materials and method: The methodological design will be experimental in vitro, because the intentional manipulation of the variables is necessary. The sample is made up of eighteen (18) internal hexagonal connection implants, of which 6 abutments are manufactured by means of CAD/CAM and a subsequent laser sintering process, 6 abutments manufactured by means of CAD/CAM and a subsequent machining process. and 6 abutments of the commercial house Bio-horizons. Results: the pillars were observed once submerged in methylene blue, where it was possible to determine that 12 (66.7%) of the pillars in the sample did not present filtration, of which five (41.7%) correspond to the group of the precast pillars, four (33.3%) to the group of machined pillars and, finally, three (25%) of the pillars belong to the group of laser sintered ones. Regarding the pillars that presented leakage, it was evidenced that three (50%) correspond to the pillars that were manufactured by the laser sintering technique, two (33.3%) were part of the group of machined pillars and only one (16, 7) corresponded to the precast group. The data was evaluated using the Fisher's exact statistical test and it is important to highlight that no statistically significant differences were found. Conclusions: When analyzing the precision of the manufactured pillars, with CAD/CAM technology, by means of the addition and subtraction technique corresponding to laser sintering and machining processes, it is possible to conclude that the pillar had a better performance, in terms of filtration. of machined titanium than that of chromium-cobalt made by laser synthesis, without presenting statistically significant differences
Determinantes del fracaso de la rehabilitación implantosoportada realizados en la Universidad Santo Tomas, 2013-2019
(Universidad Santo Tomás, 2023-03-23) Amado Forero, Manuel Fernando; Ayala Chiquillo, Laura Marcela; Rúgeles Páez, Nohora Camila
Introduction: The dental implant is a device that is surgically integrated to the bone tissue permanently replacing the root of a tooth; constituting a more predictable therapeutic option in the total or partial replacement of lost teeth. The placement of dental implants is considered an effective treatment, however, it can lead to failure of implant-supported rehabilitation. For this reason, the present study was carried out. Objective: To analyze the determinants associated with the failure of implant-supported rehabilitation performed in the postgraduate program in oral rehabilitation at the Universidad Santo Tomás Floridablanca in the period 2013-2019. Materials and methods: A descriptive-retrospective study with a descriptive-retrospective design of clinical histories of patients attended in the postgraduate course of oral rehabilitation and who have received implant-supported rehabilitation from 2013 to 2019 in the osseointegration clinics of the Universidad Santo Tomás, Floridablanca campus. Results: Five failures were reported out of the 269 treatments reviewed. Dental implant treatment failure was reported mainly in women with an age range between 50 and 69 years of age. The systemic conditions associated with dental implant failure were osteoporosis (p=0.03) and hypertension and the main habits associated with failure were; maintaining regular oral hygiene and not having a reported periodontal risk factor, the latter with a statistical significance of p=0.004, and 2 of the 5 implant-supported oral rehabilitation treatments occurred after oral rehabilitation (p=0.00). Conclusions: The characteristics of the dental implants, the surgical procedure, the rehabilitation, the systemic conditions and habits of the patient are determining factors associated with the failure of dental implants in patients treated at the dental clinic of the Universidad Santo Tomás de Bucaramanga.
Estudio in vitro de la resistencia compresiva del Graphenano Dental sometido a termociclado
(Universidad Santo Tomás, 2023-03-22) Ortiz Tafur, Cindy Johana; Mosquera Londoño, Julio Alberto; Rosales Contreras, Mónica Daniela; Lobo Delgado, Lumar Augusto
Introduction: Currently, nanotechnology has allowed the development of new materials used to complete or completely replace the dental piece, attributing properties that improve its behavior and durability. This G-CAM disc is indicated for the realization of permanent dental restorations. However, being such a novel compound, there is no scientific evidence to corroborate the effectiveness of its properties in the oral cavity. Objective: To evaluate the compressive strength of G-CAM subjected to thermocycling in different periods of time. Methods: The study design is experimental in vitro obtained 80 sheets of G-CAM graphene with measurements of 12 x 14 x 0.6 mm, distributed in 4 groups; T0 or control group exposed to compressive stress, and groups T1, T2 and T3, before being subjected to compression in the Instron testing machine, 1,000, 3,000 and 5,000 cycles will be applied in the thermocycler to simulate oral conditions. Finally, the values corresponding to the compressive effort and the time of occurrence of the failure in seconds were obtained to be analyzed. Results: the mean fracture resistance value of the 80 G-CAM sheets that were part of the study was 0.98 SD [±0.79-1.45 N] (5.85 SD [±2.45- 9.28] MPa), showing that the minimum fracture resistance value was 0.41 N (2.45 MPa) and the maximum value was 1.55 N (9.28 MPa). In relation to the time in seconds, it is anticipated that the average time in which the 80 plates appeared the fracture was 51.81 seconds, with a minimum time of occurrences of 20.8 seconds and a maximum time of occurrences of 87.75 seconds Conclusions: The average compressive strength of G-CAM graphene was 0.98 SD [±0.79-1.45 N] with a sample failure time of occurrence of 51.81 seconds.
Aflojamiento de tornillos de fijación a elementos transepiteliales en implantes Microdent
(Universidad Santo Tomás, 2023-03-22) Gonzalez Castro, Aurea Estefanny; Diaz Mendoza, Andrea Carolina; Martinez Jaimes, Diego Alejandro; Rúgeles Páez, Nohora Camila
Aim: To analyze the behavior of the fixation screws to transepithelial elements subjected to lateral forces, between implants with internal conical connection and internal hexagonal connection from Microdent. Methodology: In this experimental in vitro study, 20 implants attached to transepithelial elements were sampled, which were divided into two groups of 10 according to their connection: group A corresponded to the Microdent EK implant with internal hexagonal connection, platform diameter of 3.50 mm and length of 12 mm; group B corresponded to Microdent Genious, with internal conical connection, platform diameter of 3.50 mm and length of 12 mm. The screws of each group were subjected to a torque of 35 N, recommended by the manufacturer, and a cyclic machine was used. Each implant was induced to a compression bending force at 120 newton with 2550 repetitions and at the end counter torque was applied for each group using its torque wrench adjusted to the W&H Implantmed motor. Results: In the internal conical connection group the average and standard deviation in Nw was 33 (±35). In the internal hex connection group it was 17 (± 15) Nw, with statistical significance. Conclusions: The internal tapered connection group required a higher counter torque force to undergo loosening, with respect to the internal hex connection implant group, which establishes it to the internal tapered connection implant as a better option.
Aflojamiento de tornillos de fijación implante-pilar en implantes de conexión cónica interna y conexión hexagonal interna: una revisión sistemática
(Universidad Santo Tomás, 2022-01-27) Marriaga Padilla, Angie Lucía; Rodríguez Vargas, Diana Alexandra; Sepúlveda Conde, Paola Andrea; Rugeles Páez, Nohora Camila; Universidad Santo Tomas
Introduction: The design of the implant-abutment connection has a significant attribution to the bearing capacity and failure of the implants. One of the main failures is the loosening of the, which can lead to the appearance of biological problems, such as the infiltration of bacteria through a space. Objective: The purpose of this review is to analyze the presence of implant-abutment fixation screw loosening in implants with internal conical connection and internal hexagonal connection. Methods: In the present systematic review, a sample of 21 articles from the PubMed, Dentistry Oral, Google Scholar, Scopus, Springer Link, Web of Science, Embase, Science Direct and Biomed Central databases was included, which met the criteria selection of the study. Results: Screw loosening occurred in 9.5% of all implants, 71.4% of the loosening occurred between 0 and 60 minutes, the torque applied to each of the screws ranges between 20 and 35 Ncm, there is an average loosening of 8.9% for implants with conical connection and 10% for hexagonal connection. Causes of loosening include parafunctional habits, cantilever and arch position, screw head shape, and tissue entrapment. Conclusions: The presence of loosening is multifactorial. The applied torque was on average 30 Ncm, the presence of loosening was greater in the conical connection, however, this may be due to the size of the sample for each connection.
Resistencia a la fractura ante fuerzas compresivas en láminas de G-CAM Grafeno y Vita Enamic. Comparación in vitro
(Universidad Santo Tomás, 2022-01-19) Landinez Jaimes, Tatiana Paola; Pineda Castañeda, Karen Lorena; Trujillo Ramírez, Paola Andrea; Lobo, Lumar; Universidad Santo Tomás
The loss of dental structure is due to various factors such as trauma, caries, iatrogenesis generating wear of the tooth structure, being solved with different restorative procedures, a fundamental reason why suitable materials are sought to restore aesthetics and mainly function. Objective To evaluate the compressive resistance to fracture in G-CAM Graphene and Vita Enamic sheets. Materials and methods An in vitro test was carried out, where there was more than one comparison group, characterized by the intervention in group 0 and in group 1 a total of 40 slides were used, 20 for group 0: G-CAM Graphene and 20 for group 1: Vita Enamic. Variables such as: material, resistance, time, and fracture were evaluated. The data were entered in the Excel ® software and analyzed in Stata 14 ® with a descriptive analysis of the variables, through proportions, frequency measures, central tendency, and dispersion, finally the distribution of the data was evaluated using the Shapiro Wilk W test. Results They showed a global mean of the two compared groups of 1.26 [± 0.54] Nw (7.53 [± 3.25] MPa), with a mean global time of occurrence of the fracture 1.01 [ ± 0.49] in Minutes (61.0 [± 29.9] Sec). For G-CAM Graphene the maximum resistance to fracture was 1.67 [± 0.41] Nw (9.95 [± 2.46] MPa), with an occurrence time of 1.2 [± 0, 53] in Minutes (77.58 [± 32.37] Sec). For the Vita Enamic, the value recorded in maximum resistance to fracture was 0.85 [± 0.30] Nw (5.11 [± 1.81] MPa), with an occurrence time of 0.73 [± 0, 24] in Minutes (44.20 [± 14.47] Sec). Conclusions The compressive resistance to fracture between the G-CAM Graphene and Vita Enamic sheets showed statistically significant differences, with G-CAM Graphene being superior.
Evaluación estética de pacientes con implante único anterior en la Universidad Santo Tomás, años 2007 a 2018
(Universidad Santo Tomás, 2021-04-21) Anaya Caro, Carlos Javier; Grillo Santander, Juan Sebastián; Amaya Moreno, Edwin Mauricio; Mora Ojeda, Gabriel Mauricio; Universidad Santo Tomas
Throughout the work, a literature review is carried out on the aesthetics associated with dental implants, the parameters related to their clinical longevity from an aesthetic, biological and mechanical point of view, involving hard and soft tissue conditions; taking into account numerous variations associated with the integrity of marginal tissue. Within these evaluation parameters we have two indices: Pink Aesthetic Index and White Aesthetic Index. Objective: To evaluate the aesthetic indices in patients treated at the Santo Tomás University with a single anterior implant, in the period from 2007 to 2018. Results: An acceptable PES was evidenced in 74% of the sample and an acceptable WES in 85%. There was a statistically significant association (p = <005) between the thick periodontal phenotype and acceptable ESP, as well as an implant placement time greater than 3 years and acceptable ESP in 70% of the sample. Conclusions: The Pink Esthetic Score and the White Esthetic Score are an objective tool that allows evaluating the aesthetic conditions of definitive single-unit restorations supported by dental implants in the anterior sector.

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