Akademik Veri Yönetim Sistemi
Odontology, 2026 (SCI-Expanded, Scopus)
This study evaluated the initial effect of dental loupe use on the 3D accuracy of laminate veneer preparations performed by prosthodontic specialty residents under standardized in vitro conditions. Twenty-six residents completed two maxillary right central incisor (#11) typodont preparations using a within-participant fixed-order protocol (unaided vision followed by loupes). Prepared specimens were scanned, anonymized, and compared with a criterion reference preparation using Geomagic Control X–based 3D metrology analysis. The primary 3D accuracy outcome was root mean square (RMS) deviation across five regions of interest: the full prepared surface, cervical, middle, and incisal thirds, and a 0.5-mm marginal band. Average signed deviation (Avg) was used as a secondary descriptive measure to characterize the direction of preparation errors. No statistically significant differences were found between loupe-assisted and unaided preparations for RMS outcomes (all p > 0.05). Avg analysis showed a similar directional pattern under both conditions, with a tendency toward over-reduction in the cervical, middle, and marginal regions and under-reduction in the incisal region. Within the limitations of this in vitro study, immediate loupe introduction without an extended adaptation period did not significantly improve RMS-based laminate veneer preparation accuracy compared with unaided vision. In addition, Avg analysis showed no clear change in the directional pattern of preparation errors.