Estudio de la disponibilidad ósea implantológica en la región intermentoniana mediante TC de haz cónico

2008 
espanolObjetivos: Analizar la disponibilidad osea en la region intermentoniana y demostrar la variabilidad en el diagnostico mediante radiografia panoramica y TC (Tomografia computarizada) de haz conico (TCHC). Material y metodo: En 50 pacientes y en cinco areas de cada uno, se midieron una serie de parametros relacionados con la disponibilidad osea implantologica sobre las imagenes de ambas exploraciones. Resultados: La Rx panoramica subestima las medidas verticales y horizontales con respecto a la TCHC, implantologicamente la region intermentoniana presenta en toda su extension la misma altura osea remanente, la correlacion a uno y otro lado de la linea media resulto muy significativa para todos los parametros estudiados y el 20 % de la muestra presentaba alguna concavidad vestibular y/o lingual. Conclusion: La TC de haz conico es un ventajoso sistema para el diagnostico implantologico de la region intermentoniana, especialmente porque la dosis de radiacion emitida es minima y la precision geometrica es alta. EnglishObjectives: To analyze the availability of bone in the interforaminal region and to demonstrate the variation in diagnosis between panoramic x-ray and cone-beam computed tomography (CBCT). Material and methods: In 50 patients and in 5 areas of each, a series of parameters concerning available bone were measured on both the panoramic and the CT images. Results: Panoramic images underestimate the vertical and horizontal measurements when compared with CBCT. Regarding implant treatment, the interforaminal region presents the same remaining bone height throughout its full extent, the correlation between one side of the midline and the other was highly significant for all the parameters studied, and 20% of the sample showed some buccal and/or lingual concavity. Conclusion: Cone-beam CT is an advantageous system for interforaminal implant treatment planning, especially since the reported radiation dose is minimal and geometric accuracy is very high.
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