Influence of Kennedy class and number of implants on the accuracy of dynamic implant navigation: An in vitro study using an X-ray free evaluation methodology.

Autor: Rutkunas V; Institute of Odontology, Faculty of Medicine, Vilnius University, Vilnius 03101, Lithuania., Gendviliene I; Institute of Odontology, Faculty of Medicine, Vilnius University, Vilnius 03101, Lithuania., Auskalnis L; Institute of Odontology, Faculty of Medicine, Vilnius University, Vilnius 03101, Lithuania., Mangano F; Honorary Professor in Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China., Zlatev S; CAD/CAM Center of Dental Medicine at the Research Institute, Medical University-Plovdiv, Plovdiv 4000, Bulgaria., Ivanova V; Oral Surgery Department, Faculty of Dental Medicine, Medical University of Plovdiv, Plovdiv 4000, Bulgaria., Mijiritsky E; Head and Neck Maxillofacial Surgery, Tel-Aviv Sourasky Medical Center, Department of Otolaryngology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 699350, Israel., Borusevicius R; Institute of Odontology, Faculty of Medicine, Vilnius University, Vilnius 03101, Lithuania. Electronic address: rokas.borusevicius@gmail.com.
Jazyk: angličtina
Zdroj: Journal of dentistry [J Dent] 2023 Dec; Vol. 139, pp. 104679. Date of Electronic Publication: 2023 Sep 06.
DOI: 10.1016/j.jdent.2023.104679
Abstrakt: Objectives: The aim of this in vitro study was to evaluate the accuracy of fully guided dynamic implant navigation surgery in Kennedy I, II, and III class dental arch defects with two different implant designs, using an X-ray free evaluation method.
Methods: Polyurethane resin maxillary models simulated posterior edentulous defects. Four cone beam computed tomography (CBCT) scans and four intraoral (IOS) scans were obtained for each model and a digital wax-up with the correct implant positions was made. The accuracy of implant positions was evaluated using an IOS-based X-ray-free method (3Shape). Four deviation characteristics were evaluated: insertion point, depth deviation, horizontal and angle deviation.
Results: The insertion point deviation measures ranged from 0.19 mm to 1.71 mm. Depth (s) and (u) deviations ranged from -1.47 mm to 0.74 mm and from 0.02 mm to 1.47 mm, respectively. Horizontal deviation ranged from 0.09 mm to 1.37 mm.
Conclusions: There is a tendency of a decreasing insertion point deviation for an increasing number and distribution area of the teeth (increasing Kennedy class number). Kennedy class II and distal implant position had the most influence for the higher deviations.
Clinical Significance: Dynamic implant guidance provides accurate spacing, angulation, depth and position of the implants. It is important to understand how the number of missing teeth and implant design could influence the accuracy of dynamic implant navigation. Thus, it is important to evaluate factors influencing the accuracy of dynamic systems by using a X-ray-free post-operative method and to overcome the limitations of providing multiple CBCT scans.
Competing Interests: Declaration of Competing Interest The authors declare no conflict of interests. The Navident and Oral Reconstructive Foundation donated the materials for the study. The study was supported by the Lithuanian Business Support Agency grant Nr. J05-LVPA-K-01-0055 and DIGITORUM research team.
(Copyright © 2023. Published by Elsevier Ltd.)
Databáze: MEDLINE
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