III Jornadas Universitarias de Prótesis Dental: odontoolimpiadas

Memoria ID-0003. Ayudas de la Universidad de Salamanca para la innovación docente, curso 2015-2016

Iv Jornadas Universitarias de Prótesis Dental: odontoolimpadas

Memoria ID-0093. Ayudas de la Universidad de Salamanca para la innovación docente, curso 2016-2017

Effect of splinting scan bodies on the trueness of complete-arch digital implant scans with 5 different intraoral scanners

Statement of problem: The absence of fixed reference points can affect the trueness of complete-arch intraoral digital implant scans. The effect of splinting intraoral scan bodies (ISBs) or the inclusion of artificial landmarks (AL) on the trueness of complete-arch digital implant scans is still unclear. Purpose: The purpose of this study was to analyze the effect of splinting ISBs or the inclusion of AL on the trueness of complete-arch digital implant scans with 5 intraoral scanners (IOSs). Material and methods: Six tissue-level dental implants (Straumann Tissue Level) were placed in an edentulous patient, and the correspondent definitive cast was digitized with a desktop scanner (IScan4D LS3i) to obtain the reference digital cast. Digital scans (n=10) were performed with 5 IOSs: TRIOS 4, Virtuo Vivo, Medit i700, iTero Element 5D, and Cerec Primescan. Three different scanning techniques were evaluated: conventional (cIOSs), splinted (sIOSs), and AL (AL-IOSs). The scan data obtained were imported into a metrology software program and superimposed to the reference digital cast by using a best-fit algorithm. The overall deviations of the positions of the ISBs were evaluated by using the root-mean-square (RMS) error (α=.05). Results: The mean ±standard deviation trueness values for the cIOSs, sIOSs, and AL-IOSs groups were 48 ±8 µm, 53 ±7 µm, and 49 ±11 µm, respectively, with no statistically significant differences (P=.06). Significant differences were found for the IOSs used with each technique (P<.001). Primescan (27 ±4 µm cIOSs; 28 ±3 µm sIOSs; 31 ±3 µm AL-IOSs) showed significantly higher trueness than iTero 5D (47 ±5 µm cIOSs; 47 ±4 µm sIOSs; 50 ±6 µm AL-IOSs) (P=.002) and TRIOS 4 (93 ±18 µm cIOSs; 76 ±18 µm sIOSs; 107 ±13 µm AL-IOSs) (P=.001) for all techniques. In addition, no significant differences were found between the techniques by using iTero 5D or Primescan (P=.348 and P=.059, respectively). Conclusions: The cIOSs, sIOSs, and AL-IOSs techniques showed similar trueness. The IOS used influenced the trueness of complete-arch digital implant scans.info:eu-repo/semantics/acceptedVersio

Wünderlich syndrome from a malignant epithelioid angiomyolipoma

Angiomyolipoma of the kidney has classically been considered as a tumor of the connective tissue composed of fat, vascular tissue, and smooth muscle. In most cases, it is a tumor with benign behavior that may appear sporadically or associated with tuberous sclerosis syndrome. Macroscopically, these tumors are greyish yellow in color, and under an optical microscope, they are characterised by presenting the three components described. In recent years, several authors have published cases of epithelioid angiomyolipomas characterized by a minimal presence of fat in the tumor, positive for the melanoma-specific antigen, HMB- 45,(1) and on occasion, positive for desmin, melan-A, and others.(2,3) Computed axial tomography and nuclear magnetic resonance studies hardly differentiate epithelioid angiomyolipomas from renal cell carcinoma.(3) We present a case of malignant epithelioid angiomyolipoma in a woman with no tuberous sclerosis, the debut of which was spontaneous retroperitoneal hemorrhage causing hypovolemic shock that required left radical nephrectomy

Analysis of time and course of surgical urologic activity. Measures to develop for improve surgical activity

Objetivos: El desarrollo de las unidades de gestión clínica en los servicios quirúrgicos, hacen que el Área Quirúrgica tenga una importancia vital en el desarrollo y utilización de recursos por parte de las mismas. Este trabajo pretende revisar la actividad quirúrgica de nuestro servicio durante el año 2012 y proponer medidas de mejora de los resultados. Material y Métodos: Hemos realizado una búsqueda telemática a través de la aplicación Acquiro® de la Consejería de Salud de la Junta de Andalucía de la actividad quirúrgica desde el 1 de Enero de 2012 al 31 de diciembre de 2012 de los servicios de Cirugía General, Traumatología, Ginecología y Obstetricia, Angiología y Cirugía Vascular y Urología para analizar diferentes parámetros y compararlos entre sí con la de otras especialidades. Resultados: La UGC de Urología presenta un índice de ocupación de quirófano de 0,774, encontrándose en un nivel intermedio al compararlo con las otras especialidades. Se observa que la proporción de cirugía ambulatoria es mucho más elevada en comparación con las demás especialidades. Conclusión: Para aumentar el índice de ocupación de quirófano y optimizar los recursos se propone mantener constante el personal de quirófano no médico, optimizar el número de urólogos por cirugía y el inicio y llegada a la sala quirúrgica, así como modificar el contenido de los partes quirúrgicos con el fin de no modificar la técnica quirúrgica y/o anestésica entre una y otra cirugía.Introduction: The development of clinical management units in surgical services, make the surgical area has a vital importance in the development and use of resources by them. This work reviews the surgical activity of our service in 2012 and propose measures to improve the results. Material and Methods: We conducted a search through the telematics Acquiro ® implementation of the Health of the Andalusian surgical activity from January 1, 2012 to December 31, 2012 from the services of General Surgery, Orthopedics, Gynecology and Obstetrics, Angiology and Vascular Surgery and Urology for analyzing different parameters and compare them with those of other specialties. Results: The Urology Clinic Unit presents an operating room occupancy rate of 0.774, being at an intermediate level when compared with other specialties. It is noted that the ratio of day surgery is much higher compared to other specialties. Conclusion: To increase operating room occupancy rate and optimize resources intends to maintain constant the nonmedical surgical staff, optimizing the number of urologists for surgery and the start and arrival in the operating room, and modify the contents of the parts surgical not to modify the surgical procedure and / or between one and another anesthetic surger

Influence of occlusal collision corrections completed by two intraoral scanners or a dental design program on the accuracy of the maxillomandibular relationship.

STATEMENT OF PROBLEM Occlusal collisions of articulated intraoral digital scans can be corrected by intraoral scanners (IOSs) or dental design software programs. However, the influence of these corrections on the accuracy of maxillomandibular relationship is unclear. PURPOSE The purpose of this clinical investigation was to measure the effect of occlusal collision corrections completed by the IOSs or dental design software programs on the trueness and precision of maxillomandibular relationship. MATERIAL AND METHODS Casts of a participant mounted on an articulator were digitized (T710). The experimental scans were obtained by using 2 IOSs: TRIOS4 and i700. The intraoral digital scans of the maxillary and mandibular arches were obtained and duplicated 15 times. For each duplicated pair of scans, a bilateral virtual occlusal record was acquired. Articulated specimens were duplicated and assigned into 2 groups: IOS-not corrected and IOS corrected (n=15). In the IOS-not corrected groups, the IOS software program postprocessed the scans maintaining the occlusal collisions, while in the IOS-corrected groups, the IOS software program eliminated the occlusal collisions. All articulated specimens were imported into a computer-aided design (CAD) program (DentalCAD). Three subgroups were developed based on the CAD correction: CAD-no change, trimming, or opening the vertical dimension. Thirty-six interlandmark distances were measured on the reference and each experimental scan to compute discrepancies by using a software program (Geomagic Wrap). Root mean square (RMS) was selected to compute the cast modifications performed in the trimming subgroups. Trueness was examined using 2-way ANOVA and pairwise comparison Tukey tests (α=.05). Precision was evaluated with the Levene test (α=.05). RESULTS The IOS (P<.001), the program (P<.001), and their interaction (P<.001) impacted the trueness of the maxillomandibular relationship. The i700 obtained higher trueness than the TRIOS4 (P<.001). The IOS-not corrected-CAD-no-changes and IOS-not-corrected-trimming subgroups obtained the lowest trueness (P<.001), while the IOS-corrected-CAD-no-changes, IOS-corrected-trimming, and IOS-corrected-opening subgroups showed the highest trueness (P<.001). No significant differences in precision were found (P<.001). Furthermore, significant RMS differences were found (P<.001), with a significant interaction between Group×Subgroup (P<.001). The IOS-not corrected-trimmed subgroups obtained a significantly higher RMS error discrepancy than IOS-corrected-trimmed subgroups (P<.001). The Levene test showed a significant discrepancy in the RMS precision among IOSs across subgroups (P<.001). CONCLUSIONS The trueness of the maxillomandibular relationship was influenced by the scanner and program used to correct occlusal collisions. Better trueness was obtained when the occlusal collisions were adjusted by the IOS program compared with the CAD program. Precision was not significantly influenced by the occlusal collision correction method. CAD corrections did not improve the results of the IOS software. Additionally, the trimming option caused volumetric changes on the occlusal surfaces of intraoral scans

Sistemática clínica ilustrada de planificación y tratamiento de pacientes rehabilitados con coronas unitarias sobre implantes. Resolución de preguntas frecuentes

La finalidad de este proyecto es mostrar la sistemática clínica completa de coronas unitarias sobre implantes, de manera detallada y accesible para el alumno de manera instantánea y desde el Campus Virtual, tanto si se retienen por atornillado como si lo hacen por cementado. También se incluyen una serie de preguntas que permitan al alumno evaluar la calidad del tratamiento realizado, así como algunos artículos publicados en revistas JCR que tratan sobre el tema en cuestión

Sistemática clínica ilustrada de planificación y tratamiento de pacientes rehabilitados con prótesis híbridas sobre implantes. Preguntas de autoevaluación del proceso

La finalidad de este proyecto es mostrar la sistemática clínica completa de este tipo de tratamiento, con los distintos tipos de retención que pueden encontrarse hoy en día en el mercado, detallada y accesible para el aluno de manera instantánea y desde el Campus Virtual. Con esta herramienta, la secuencia de tratamiento que el alumno debe conocer una vez terminado el Grado de Odontología, puede ser consultada desde el Campus Virtual con fotografías y explicaciones de cada paso del proceso clínico; del mismo modo, la disponibilidad de un test de autoevaluación servirá como proceso de aprendizaje, ya que le orientará sobre la calidad del tratamiento que ha desempeñado, le hará darse cuenta de los posibles fallos que ha podido cometer durante el desarrollo del mismo, y supondrá que sea consciente de ellos y pueda corregirlos la próxima vez que se enfrente a este tipo de tratamientos. - Facilitar el acceso inmediato y a distancia al alumno de la secuencia detallada del tratamiento mediante prótesis híbridas. - Explicar cada paso del tratamiento de manera detallada y apoyada en ilustraciones. - Proporcionar un test de autoevaluación que sirva al alumno para plantearse posibles fallos durante el desarrollo del procedimiento

Effect of Fabrication Technique on the Microgap of CAD/CAM Cobalt-Chrome and Zirconia Abutments on a Conical Connection Implant: An In Vitro Study.

The aim of this in vitro study was to investigate the microgaps at the implant-abutment interface when zirconia (Zr) and CAD/CAM or cast Co-Cr abutments were used. METHODS Sixty-four conical connection implants and their abutments were divided into four groups (Co-Cr (milled, laser-sintered and castable) and Zirconia (milled)). After chewing simulation (300,000 cycles, under 200 N loads at 2 Hz at a 30° angle) and thermocycling (10,000 cycles, 5 to 50 °C, dwelling time 55 s), the implant-abutment microgap was measured 14 times at each of the four anatomical aspects on each specimen by using a scanning electron microscope (SEM). Kruskal-Wallis and pair-wise comparison were used to analyze the data (α = 0.05). RESULTS The SEM analysis revealed smaller microgaps with Co-Cr milled abutments (0.69-8.39 μm) followed by Zr abutments (0.12-6.57 μm), Co-Cr sintered (7.31-25.7 μm) and cast Co-Cr (1.68-85.97 μm). Statistically significant differences were found between milled and cast Co-Cr, milled and laser-sintered Co-Cr, and between Zr and cast and laser-sintered Co-Cr (p < 0.05). CONCLUSIONS The material and the abutment fabrication technique affected the implant-abutment microgap magnitude. The Zr and the milled Co-Cr presented smaller microgaps. Although the CAD/CAM abutments presented the most favorable values, all tested groups had microgaps within a range of 10 to 150 μm