Marginal and internal fit and intaglio surface trueness of interim crowns fabricated from tooth preparation of four finish line locations

Abstract This study evaluated the marginal and internal fit intaglio surface trueness of interim crowns fabricated from tooth preparation scanned at four finish line locations. The right maxillary first molar model was using a ceramic material placed in locations (supragingival, equigingival, subgingival, subgingival with cord). Intraoral scanning performed. Crowns were designed based on area. Interim stereolithography three-dimensional (3D) printer (N = 16 per location). Marginal silicone replica technique. Intaglio 3D inspection software. One-way analysis variance Tukey HSD test performed for comparisons (? 0.05). showed significant differences according to ( P < 0.05); best results supragingival significantly different region, highest value location caused inaccurate due poor fabrication reproducibility region. use an intraoral scanner should be decided clinical situation needs.