Surgical guides for dental implants: Measurement of the accuracy using a freeware metrology software program
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- Lo Russo Lucio
- Oral Diseases, Department of Clinical and Experimental Medicine, School of Dentistry, University of Foggia, Foggia, Italy
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- Ercoli Carlo
- Department of Prosthodontics, Eastman Institute for Oral Health, University of Rochester, Rochester, NY
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- Guida Laura
- Salus Oris srl, Vallesaccarda (AV), Italy
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- Merli Mauro
- Clinica Merli, Rimini, Italy
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- Laino Luigi
- Oral Diseases, Multidisciplinary Department of Medical-Surgical and Odontostomatological Specialties, University of Campania, “Luigi Vanvitelli”, Naples, Italy
抄録
<p>Purpose: Manufacturing-related inaccuracies of surgical guides for static computer-aided implant surgery may contribute to the overall potential error in the obtained implant position. Measuring such inaccuracies before surgery may provide quality control assessment and improve the safety and outcomes of guided implant surgery. This technical report demonstrates a workflow to measure the accuracy of a surgical guide (at the intaglio surface and sleeve housing) using a freeware metrology software program.</p><p>Methods: The scan of a milled surgical guide was aligned to and compared with its reference computer-aided design model using a freeware metrology software program (GOM Inspect suite; GOM GmbH). The trueness of the internal surface of the surgical guide was measured as an indicator of adaptation to the supporting tissues. Additionally, some features were constructed to extract the plane at the sleeve entrance and sleeve axis and to set a local coordinate system on them. Linear and angular deviations between the planned and obtained sleeve axes were measured using this system. Such measurements, together with additional known data (sleeve offset and the planned implant length), allowed the estimation of linear errors in implant position at both the implant platform and apex by applying common geometric formulas, based on the assumption that all other sources of error in implant position could be effectively controlled during the surgical procedure.</p><p>Conclusions: The proposed digital technique is a cost-effective approach for quality control of the inaccuracies of a surgical guide and predicts the related potential error in implant position.</p>
収録刊行物
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- Journal of Prosthodontic Research
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Journal of Prosthodontic Research 67 (2), 300-304, 2023
公益社団法人 日本補綴歯科学会