Work

An in vitro accuracy study on scan body-assisted surface based registration for conventional and zygomatic dental implants

Year: 2025

Type: article

Abstract: There are various techniques to measure accuracy of dental implant surgery, but limited data validating the techniques used to analyze accuracy. Scan-body-assisted surface-based registration (SB-SBR) is deemed theoretically accurate, but with challenges in testing accuracy. The purpose of the study was to analyze the accuracy of SB-SBR for conventional (CVI) and zygomatic implants (ZI) using 2 complementary techniques. An in-vitro study was designed using a 3D-printed model of an edentulous maxilla with CVI and ZI digitally planned and placed. SB-SBR was performed on the physical model and on a model-free virtual setting, and the implant position was compared with those of the planned implants 10 times. Outcome variables were angular and linear errors (AE and LE), with thresholds of 1° and 1 mm. Paired t-test and Wilcoxson signed-ranked test were used. Results showed greater AE for ZI versus CVI (mean difference, MD 0.42°). Apical LE was greater for ZI (MD 0.68 mm), while CVI exhibited greater platform LE (MD 0.69 mm). Overall AE remained under 1°, but the apical LE of ZI exceeded 1 mm, which could potentially lead to violation of critical structures when combined with surgical error, highlighting the need for caution when interpreting data derived from SB-SBR especially for ZI.

Source: Scientific Reports

DOI: 10.1038/s41598-025-26936-8

Authors: Michael D. Han, Sebastian Graca, Dima Ghunaim, Leila Ahmadian

Institution: University of Illinois Chicago

Language: English

Topic: Dental Implant Techniques and Outcomes

Subfield: Oral Surgery

Field: Dentistry

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $2,690