Improved accuracy of digital implant impressions with newly designed scan bodies: an in vivo evaluation in beagle dogs

• DOI: 10.1186/s12903-021-01986-2
• Publication Date: 2021-12-07T11:02:33Z
• Authors: Ruoxuan Huang; Yuanxiang Liu; Baoxin Huang; Fengxing Zhou; Zhuofan Chen; Zhipeng Li
• Keywords: Beagle

Abstract Background The accuracy of digital impressions for fully edentulous cases is currently insufficient routinely clinical application. To overcome the challenge, a modified scan body was introduced, which demonstrated satisfactory in vitro. aim this study to evaluate using bodies with extensional structure versus without mandible two implants beagle dogs. Methods unilateral mandibular second premolar molar were extracted four Twelve weeks later, placed. Five repeated performed an intraoral scanner on each dog different bodies: Group I—scan (SB); II—scan (SBE). scans exported Standard Tessellation Language (STL) files serve as test data. dogs sacrificed and dissected mandibles digitalized lab provide reference Linear angular deviations calculated inspection software assessment. Statistical analysis two-way ANOVA. level significance set at α = 0.05. Results For trueness assessment, mean absolute linear/angular 119.53 μm/0.75 degrees I 68.89 μm/0.36 II. SBE more accurate than SB regarding both linear ( p 0.008) 0.049) deviations. precision 63.01 μm/0.47 38.38 μm/0.24 No significant difference found. Conclusions application significantly improved compared SB. found terms precision.