Impact of cone-beam computed tomography on implant planning and on prediction of implant size

Abstract

Abstract:The aim was to investigate the impact of cone-beam computed tomography (CBCT) on implant planning and on prediction of final implant size. Consecutive patients referred for implant treatment were submitted to clinical examination, panoramic (PAN) radiography and a CBCT exam. Initial planning of implant length and width was assessed based on clinical and PAN exams, and final planning, on CBCT exam to complement diagnosis. The actual dimensions of the implants placed during surgery were compared with those obtained during initial and final planning, using the McNemmar test (p < 0.05). The final sample comprised 95 implants in 27 patients, distributed over the maxilla and mandible. Agreement in implant length was 50.5% between initial and final planning, and correct prediction of the actual implant length was 40.0% and 69.5%, using PAN and CBCT exams, respectively. Agreement in implant width assessment ranged from 69.5% to 73.7%. A paired comparison of the frequency of changes between initial or final planning and implant placement (McNemmar test) showed greater frequency of changes in initial planning for implant length (p < 0.001), but not for implant width (p = 0.850). The frequency of changes was not influenced by implant location at any stage of implant planning (chi-square test, p > 0.05). It was concluded that CBCT improves the ability of predicting the actual implant length and reduces inaccuracy in surgical dental implant planning.

Evaluation of Dental Implants Using a Modified Thread Geometry in the Mandibular Premolar Region

“…Corresponding to the studies conducted by Cassetta et al, (12) in 2013 and Bornstein et al, (13) in 2014, they reported that the use of CBCT in implant dentistry vary from preoperative analysis regarding anatomic considerations, and treatment planning to postoperative evaluation. Along with, lower radiation dose, reduced costs and the relative grey density values of CBCT images making it a useful substitute for computerized tomography (CT) (14,15).…”

Planificacion de tratamiento con software para cirugía guiada en implantologia oral

“…Permite al clínico generar múltiples cortes tomográficos en diversos planos de una región anatómica que se pretenda estudiar, utilizando un haz de rayo rotacional en forma cónica, y mediante una serie de algoritmos matemáticos, obtener múltiples proyecciones con una sólo rotación, haciendo de esta forma la reconstrucción de las estructuras anatómicas en una imagen 3D (Figuras 1 y 2) 9 . En combinación con el software de planificación de implantes, el uso de imágenes de CBCT permite planificar virtualmente la posición óptima de un implante con respecto a las estructuras anatómicas vecinas y las futuras necesidades protésicas (Figuras 3-6) 11 .…”

CAD/CAM Technology in Implant Dentistry

“…More recently, a new technology called cone-beam computed tomography (CBCT) has become popular [1,[10][11][12][13]. This works by the x-ray tube emitting beams onto a 2-D sensor.…”