Comparación entre la técnica tradicional y la técnica estática guiada en la remoción de postes de fibra de vidrio. Estudio in vitro

Abstract

Fiberglass posts have been widely used in the last decade, sometimes they must be removed when there is a need for endodontic retreatment. For this purpose, the traditional ultrasound technique is usually used, which generates alterations in the anatomy of the tooth, therefore, the aim is to study new alternatives with the guided static technique when removing these posts, Aim: To compare the traditional technique and the static guided technique in the removal of fiberglass posts, identifying the percentage of procedural errors, to observe the amount of dental tissue that is worn out. Method: 20 premolars with root canal treatment and cemented posts are divided into two biomodels, in one the posts are removed with traditional technique and the other with static guided technique, initial and final CBCT is compared in 3D Slicer® software where segmentation is performed and in Autodesk Meshmixer® software; which allowed individual analysis of each treated tooth. Results: The traditional technique leaves less post residue inside the root canal, but the guided static technique is more conservative with the dentin structure and reduces the probability of adverse events. Conclusions: The static guided technique proved to be a useful and safe alternative when removing a fiberglass post.