Standardization of three-dimensional pose of cylindrical implants from intraoral radiographs: a preliminary study

BMC Oral Health

Bruno Carlo Brevi¹  Miguel Peñarrocha-Diago²  David Peñarrocha-Oltra²  Ugo Covani³  Paolo Toti⁴  Saverio Cosola⁵ 

[1] Department of Maxillo-Facial Surgery (Acting Director: Dr. Bruno Brevi), Hospital and University of Pisa, Via Piero Trivella, 56124, Pisa, Italy;Department of Stomatology, Faculty of Medicine and Dentistry, University of ValenciaGascó, Oliag Street 1, 46010, Valencia, Spain;Department of Stomatology, Tuscan Stomatological Institute, Foundation for Dental Clinic, Research and Continuing Education, Via Padre Ignazio da Carrara 39, 55042, Forte Dei Marmi, Italy;Department of Stomatology, Tuscan Stomatological Institute, Foundation for Dental Clinic, Research and Continuing Education, Via Padre Ignazio da Carrara 39, 55042, Forte Dei Marmi, Italy;Department of Multidisciplinary Regenerative Research, “Guglielmo Marconi University”, Via Plinio 44, 00193, Rome, Italy;Department of Stomatology, Tuscan Stomatological Institute, Foundation for Dental Clinic, Research and Continuing Education, Via Padre Ignazio da Carrara 39, 55042, Forte Dei Marmi, Italy;Department of Stomatology, Faculty of Medicine and Dentistry, University of ValenciaGascó, Oliag Street 1, 46010, Valencia, Spain;

关键词: Dental informatics/bioinformatic;    Computer simulation;    Dental implant(s);    Digital imaging/radiology;    Mathematical modeling;   

DOI  :  10.1186/s12903-021-01448-9

来源: Springer

【 摘 要 】

BackgroundTo introduce a theoretical solution to a posteriori describe the pose of a cylindrical dental fixture as appearing on radiographs; to experimentally validate the method described.MethodsThe pose of a conventional dental implant was described by a triplet of angles (phi-pitch, theta-roll, and psi-yaw) which was calculated throughout vector analysis. Radiographic- and simulated-image obtained with an algorithm were compared to test effectiveness, reproducibility, and accuracy of the method. The length of the dental implant as appearing on the simulated image was calculated by the trigonometric function and then compared with real length as it appeared on a two-dimensional radiograph.ResultsTwenty radiographs were analyzed for the present in silico and retrospective study. Among 40 fittings, 37 resulted as resolved with residuals ≤ 1 mm. Similar results were obtained for radiographic and simulated implants with absolute errors of − 1.1° ± 3.9° for phi; − 0.9° ± 4.1° for theta; 0° ± 1.1° for psi. The real and simulated length of the implants appeared to be heavily correlated. Linear dependence was verified by the results of the robust linear regression: 0.9757 (slope), + 0.1344 mm (intercept), and an adjusted coefficient of determination of 0.9054.ConclusionsThe method allowed clinicians to calculate, a posteriori, a single real triplet of angles (phi, theta, psi) by analyzing a two-dimensional radiograph and to identify cases where standardization of repeated intraoral radiographies was not achieved. The a posteriori standardization of two-dimensional radiographs could allowed the clinicians to minimize the patient’s exposure to ionizing radiations for the measurement of marginal bone levels around dental implants.

【 授权许可】

CC BY