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1.
Int. j interdiscip. dent. (Print) ; 13(3): 207-211, dic. 2020. tab
Article in Spanish | LILACS | ID: biblio-1385154

ABSTRACT

RESUMEN: Introducción: La confección de restauraciones indirectas ha sido tradicionalmente realizada mediante técnicas convencionales de laboratorio, la cual involucra la realización de una serie de pasos y la necesidad de que el paciente asista a varias sesiones clínicas. En las últimas décadas ha sido incorporada la técnica CAD/CAM, la cual ha simplificado la confección de restauraciones indirectas. Es necesario comparar el desempeño clínico de ambas técnicas. Métodos: Realizamos una búsqueda en Epistemonikos, la mayor base de datos de revisiones sistemáticas en salud, la cual es mantenida mediante el cribado de múltiples fuentes de información, incluyendo MEDLINE, EMBASE, Cochrane, entre otras. Extrajimos los datos desde las revisiones identificadas, analizamos los datos de los estudios primarios, realizamos un metaanálisis y preparamos una tabla de resumen de los resultados utilizando el método GRADE. Resultados y conclusiones: Identificamos tres revisiones sistemáticas que en conjunto incluyeron ocho estudios primarios, de los cuales, cinco corresponden a ensayos aleatorizados. Concluimos que la técnica CAD/CAM probablemente aumenta la falla de la restauración y la pérdida de retención. Por otra parte, podría disminuir levemente la pérdida de vitalidad y tener nula o poca diferencia en el riesgo de extracción dentaria, riesgo de caries secundaria y cambio de color superficial, pero la certeza de la evidencia es baja.


ABSTRACT: Introduction: Conventional laboratory techniques for indirect restoration involve multiple stages and several clinical sessions for patients. In the last decades, the CAD/CAM technique has been incorporated in clinical practice, simplifying the fabrication process of indirect restorations. A comparative assessment of the clinical performance of both techniques is required. Methods: We searched in Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others. We extracted data from the systematic reviews, reanalyzed data of primary studies, conducted a meta-analysis and generated a summary of findings table using the GRADE approach. Results and conclusions: We identified three systematic reviews including eight studies overall, of which five were randomized trials. We conclude that CAD/CAM technique probably increase the risk of restoration failure and loss of retention. On the other hand, CAD/CAM technique may slightly reduce the risk of loss of vitality and may make little or no difference to the risk of tooth extraction, risk of secondary caries and superficial color change, but the certainty of the evidence is low.


Subject(s)
Humans , Computer-Aided Design , Dental Restoration, Permanent/methods
2.
The Journal of the Korean Orthopaedic Association ; : 1002-1007, 2006.
Article in Korean | WPRIM | ID: wpr-650861

ABSTRACT

PURPOSE: To compare the radiologic and clinical outcomes of total knee arthroplasty (TKA) performed using a navigation system with those obtained using the conventional technique. MATERIALS AND METHODS: Forty-one TKAs were performed using a navigation system (navigation group) and forty-eight by conventional surgery (conventional group). Radiologic results outside the range defined by +/-3degrees of optimum were classified as outliers. Range of motion and HSS scores at final follow-up were also compared. RESULTS: Mean mechanical axes were 0.3degrees valgus for navigation and 0.5degrees varus for the conventional group, which were not statistically different. However, two outliers occurred in the navigation group, which was significantly less than the 14 that occurred in the conventional group. Mean coronal inclination of the femoral component was significantly different in the two groups as were the outlier numbers. Although outlier numbers significantly differed in sagittal inclination of the femoral or tibial components or coronal inclination of the tibial component, there were no statistical differences in terms of mean values. Differences in ROM and HSS scores were also not observed between the two groups. CONCLUSION: The navigation system helped increase alignment accuracy of the lower extremity, but no significant difference was observed in clinical results between the two study groups.


Subject(s)
Arthroplasty , Follow-Up Studies , Knee , Lower Extremity , Range of Motion, Articular
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