20.500.12556/DiRROS-28980 3D method for the volumetric evaluation and visualisation of dental biofilms a proof-of-principle study Background and objective: Traditional and planimetric plaque indices rely on plaque-disclosing agents and cannot quantify three-dimensional (3D) structures of dental biofilms. We introduce a novel computer-assisted method for evaluating and visualising plaque volume using intraoral scans (IOSs). Materials and methods: This was a 4-day, non-brushing, plaque-regrowth study (n = 15). All plaque was removed at baseline (T0). IOSs at T0 and after 4 days (T4) were used for volumetric plaque assessment in six steps: model acquisition, model superimposition, computer-aided determination of tooth-surface margins, tooth-surface superimposition, visualisation and volumetric evaluation of biofilms. Plaque formation at T4 was additionally assessed with the Turesky Modification of the Quigley-Hein Plaque Index (TMQHPlI). We used Pearson's correlation coefficients and multilevel models to investigate the relationships between TMQHPlI, volumetric plaque index (VPI) and the adjusted volumetric plaque index (AVPI, plaque volume/area). Results: VPI and AVPI positively correlated with the TMQHPlI, showing higher variability at lower TMQHPlI scores. VPI had a lower threshold for plaque detection and higher sensitivity than the TMQHPlI. VPI and TMQHPlI were highest on vestibular, maxillary and molar surfaces. Conclusion: VPI quantifies biofilm deposits, is a more precise measure for plaque detection than the TMQHPlI and can be visualised using colour-coded maps displaying areas of equal plaque thickness. computer‐assisted image analysis dental plaque dental plaque index diagnostic imaging digital technology three‐dimensional imaging računalniško podprta analiza slik zobne obloge indeks zobnih oblog diagnostično slikanje digitalna tehnologija tridimenzionalno slikanje true false true Angleški jezik Slovenski jezik Neznano 2026-04-15 13:29:40 2026-04-15 13:29:41 2026-04-16 04:06:22 0000-00-00 00:00:00 2025 0 0 str. 1687-1697 iss. 12 Vol. 52 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 616.31 0303-6979 10.1111/jcpe.70019 250085635 RAZ_Povsic_Katja_2025.pdf RAZ_Povsic_Katja_2025.pdf 1 7BC363025120B0937624AC249FE6EBCB b2bf1149d512abdb5a2353162fa67218517ac46e8df75477d91903d329e39f07 89d48add-38be-11f1-9cc3-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=43251 https://onlinelibrary.wiley.com/doi/10.1111/jcpe.70019 1 66268a2b-38be-11f1-9cc3-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=43250 Univerzitetni klinični center Ljubljana 0 0 0