Influences of inter-implant distances on the accuracy of intraoral scanning techniques
- VernacularTitle:种植体间距对口内扫描印模精度的影响
- Author:
Shiyan FANG
1
;
Rong XIA
Author Information
- Keywords: intraoral scanner; digital impression; inter-implant distances; accuracy; distance deviation; angular deviation
- From: Acta Universitatis Medicinalis Anhui 2024;59(10):1875-1880
- CountryChina
- Language:Chinese
- Abstract: Objective To assess the influence of inter-implant distances on the accuracy of intraoral scanning im-pressions in vitro.Methods A master cast model with different inter-implant distances was scanned by laboratory and intraoral scanners,which were used as the reference and intraoral scan data.The distance and angular devia-tions of the scan bodies corresponding to the reference and intraoral digital scan standard tessellation language(STL)files were measured and calculated in a three-dimensional analysis software.The one-sample t-test,Spearman's correlation analysis,Brown-Forsythe F test,Games-Howell post-hoc test,and Levene's test were used for comparisons(α=0.05).Results The overall distance and angular deviations of the intraoral digital scan were(27.48±18.14)μm and(0.24±0.19)°,within clinically acceptable limits(P＜0.001).The inter-implant distances exhibited a significant positive correlation with both the scanning distance and angular deviations in terms of scanning trueness.The angular deviation differed significantly between the 1-2 group(8.13 mm)and the other distance groups.Additionally,inter-implant distances affected the precision of the intraoral scanner(P＜0.05).Conclusion The findings of this study indicate that intraoral scanning impressions of complete-arch implant-sup-ported prostheses are within clinically acceptable ranges of accuracy.Inter-implant distances≤8.13 mm can result in a higher accuracy of intraoral scanning.Increased inter-implant distances can adversely affect intraoral scanning accuracy.
- Full text:2024122600551666334种植体间距对口内扫描印模精度的影响_方诗颜.pdf
