Análisis de la precisión en la colocación de implantes dentales osteointegrados con guías estereolitográficas basado en la experiencia del cirujano

Resum

OBJECTIVES: The purpose of this study is to evaluate whether or not there are any differences in the accuracy of guided implant placement depending on the surgeon's experience level. MATERIALS AND METHODS: 15 surgeons, divided into three groups based on experience level (I – Expert, II – Intermediate, III Novice). These surgeons set six implants in five identical mandibles (for a total of 75 mandibles and 450 implants). The same planning and stereolithographic guide were used in all cases - as generated by CBCT images and implant planning software (NemoscanTM, Nemotec). After the implant placement in each mandible, another scan was taken, and the 3D images of each scan were blended with the images in the planning in order to evaluate any deviation. Any differences in platform position, apex position and angle of the implant were measured. The differences between each surgeon and each group were compared using Manova analysis. RESULTS: There were significant differences in the angle of the implant in the three groups. Group III (novice) presented the greatest angle deviation. Group III (novice) showed the greatest platform position accuracy. There were no significant differences in the groups as far as apex position. The differences, although statistically significant, are clinically irrelevant. CONCLUSIONS: The use of computer-generated stereolithographic guides in dental implantology is an accurate system with no relevant clinical differences in the surgeon's previous experience in either guided surgery or conventional implantology.