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Assessment of reference areas for superimposition of serial 3D models of patients with advanced periodontitis for volumetric soft tissue evaluation
Author(s) -
Kuralt Marko,
Fidler Aleš
Publication year - 2021
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/jcpe.13445
Subject(s) - superimposition , intraclass correlation , periodontitis , medicine , orthodontics , reproducibility , dentistry , mathematics , computer science , statistics , artificial intelligence
Aim This study aimed to determine the optimal reference area for superimposition of serial 3D dental models of patients with advanced periodontitis. Materials and Methods Ten pre‐ and post‐periodontal treatment 3D models (median time lapse: 13.1 months) of patients with advanced periodontitis were acquired by intraoral scanning. Superimposition was performed with the iterative closest point algorithm using four reference areas: (A) all stable teeth, (B) all teeth, (C) third palatal rugae and (D) the whole model. The superimposition accuracy was evaluated at two stable evaluation regions using the mean absolute distance and evaluated with two‐way ANOVA and post‐hoc multivariate model. The intra‐ and inter‐operator reproducibility was calculated by intraclass correlation coefficient (ICC). Results Superimposition accuracy evaluated at stable tooth evaluation region were 71 ± 29 μm, 73 ± 21 μm, 127 ± 52 μm and 113 ± 53 μm for areas A, B, C and D, respectively. All reference areas showed similarly high ICC values >0.990, except for reference area C showing ICC of 0.821 (intra‐operator) and 0.767 (inter‐operator) for tooth evaluation area. Conclusions Area A and B provide the highest accuracy for superimposition of serial 3D dental models acquired by intraoral scanning of patients with advanced periodontitis.