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CLINICAL FACTORS AFFECTING THE ACCURACY OF GUIDED IMPLANT SURGERY-A SYSTEMATIC REVIEW AND META-ANALYSIS
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DOI：10.1016/j.jebdp.2017.07.007.png)
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Abstract
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Objectives To systematically review the current dental literature regarding clinical accuracy of guided implant surgery and to analyze the involved clinical factors. Material and Methods PubMed and Cochrane Central Register of Controlled Trials were searched. Meta-analysis and meta-regression analysis were performed. Clinical studies with the following outcome measurements were included: (1) angle deviation, (2) deviation at the entry point, and (3) deviation at the apex. The involved clinical factors were further evaluated. Results Fourteen clinical studies from 1951 articles initially identified met the inclusion criteria. Meta-regression analysis revealed a mean deviation at the entry point of 1.25 mm (95% confidence interval [CI]: 1.22-1.29), 1.57 mm (95% CI: 1.53-1.62) at the apex, and 4.1 degrees in angle (95% CI: 3.97-4.23). A statistically significant difference (P<.001) was observed in angular deviations between the maxilla and mandible. Partially guided surgery showed a statistically significant greater deviation in angle (P<. 001), at the entry point (P<. 001), and at the apex (P<. 001) compared with totally guided surgery. The outcome of guided surgery with flapless approach indicated significantly more accuracy in angle (P<. 001), at the entry point (P<.001), and at apex (P<.001). Significant differences were observed in angular deviation based on the use of fixation screw (P<. 001). Conclusions The position of guide, guide fixation, type of guide, and flap approach could influence the accuracy of computer-aided implant surgery. A totally guided system using fixation screws with a flapless protocol demonstrated the greatest accuracy. Future clinical research should use a standardized measurement technique for improved accuracy.
Keywords:
Dental implants
Computer-assisted
Guided surgery
Surgical guides
Accuracy
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