Abstract
Computer-aided implantology has developed rapidly in recent years, this study aimed to compare the accuracy of guided-surgery between anterior immediate and delayed implantation, and simultaneously assess the effect of full-guided and half-guided templates on accuracy values. Seventy-six implants were inserted in 63 patients using full-guided or half-guided template in the anterior zone. Postoperative cone beam computed tomography (CBCT) was matched with preoperative planning to evaluate the deviation between actual and planned implants. No statistical difference was found in any deviation between immediate and delayed implantation (p > 0.05). In anterior immediate implantation, the global coronal, apical, depth and angular deviations of full-guided templates were all significantly lower than those of half-guided templates (0.66 ± 0.26 vs. 1.10 ± 0.76 mm, 0.96 ± 0.41 vs. 1.43 ± 0.70 mm, 0.46 ± 0.24 mm vs. 0.93 ± 0.79 mm and 1.69° ± 0.94° vs. 2.57° ± 1.57°). While in delayed implantation, full-guided templates only perform better with statistical significance on global apical and depth deviation (1.01 ± 0.42 vs. 1.51 ± 0.55 mm and 0.32 ± 0.26 vs. 0.71 ± 0.47 mm). After excluding the influence of depth deviation, the coronal and apical deviations between the two systems in immediate implantation and the apical deviations in delayed implantation had no statistical difference. Within the limit of this study, the results suggested the accuracy of guided-surgeries for anterior immediate and delayed implantations was comparable, and full-guided template was more accurate for immediate and delayed implantation.
Highlights
Over the last decades, the computer-aided implantology (CAI) has drawn more and more attention with the potential for a more accurate, predictable and less invasive surgery [1,2,3]
Within the limit of this study, the results suggested the accuracy of guided-surgeries for anterior immediate and delayed implantations was comparable, and full-guided template was more accurate for immediate and delayed implantation
The purpose of this study was to investigate the accuracy of guided-surgery between anterior immediate and delayed implantation, and assess the effect of full-guided and half-guided templates on accuracy values in different implanting timings, to determine which was the best choice in clinical practice
Summary
The computer-aided implantology (CAI) has drawn more and more attention with the potential for a more accurate, predictable and less invasive surgery [1,2,3]. Unlike traditional free hand surgeries based on the operators’ experience and imagination, CAI followed the principle of “prosthesis-driven” implant placement, creating an ideal situation for anterior aesthetic restorations [4,5]. Planning software such as SimPlant® and Nobel Clinician®, in combination with three-dimensional (3D) tissue information obtained from cone beam computed tomography (CBCT) and optical scan, opened the possibility for adequate preoperative design [6,7,8,9,10]. The main purpose of this study was to compare the accuracy of guided-surgery between anterior immediate and delayed implantation, and simultaneously evaluate the influence of half-guided and full-guided template on accuracy values, aiming to provide clinicians a better choice in real operative procedures
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