alexa Retrospective study to determine the accuracy of template-guided implant placement using a novel nonradiologic evaluation method.
Dentistry

Dentistry

Journal of Medical and Dental Research

Author(s): Schnutenhaus S, Edelmann C, Rudolph H, Luthardt RG

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Abstract OBJECTIVES: With a novel, noninvasive method for determining three-dimensional accuracy, the realized implant position relative to the planned implant position was analyzed retrospectively. Additional postoperative cone beam computed tomography was thus dispensable. STUDY DESIGN: Twelve cases with distal extension situations (DESs) or single tooth gaps (STGs) were evaluated. The data sets of the planned implant position were superimposed on the actually achieved implant position, retrieved from digitizing the implant impression. The deviations were measured and statistically analyzed. RESULTS: The mean deviation was 5° in the DES group and 4° in the STG group for the implant axes, 1 mm (DES) and 0.9 mm (STG) at the implant neck, and 1.6 mm (DES) and 1.5 mm (STG) at the implant apex. The mean height discrepancy was 0.5 mm (DES) and 0.5 mm (STG). No significant differences (P > .05) were found between the DES and STG groups. CONCLUSIONS: The innovative, noninvasive evaluation method is suitable and sufficiently accurate for the assessment of larger cohorts. The results of our study showed a sufficiently high degree of accuracy when using a virtual planning program for which no radiopaque template is needed when performing cone beam computed tomography. Copyright © 2016 Elsevier Inc. All rights reserved. This article was published in Oral Surg Oral Med Oral Pathol Oral Radiol and referenced in Journal of Medical and Dental Research

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