Reproducibility of intraoral photography for pink and white tissue assessment : Is it worth the hassle?

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Reproducibility of intraoral photography for pink and white tissue assessment : Is it worth the hassle?

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Publication Article, peer reviewed scientific
Title Reproducibility of intraoral photography for pink and white tissue assessment : Is it worth the hassle?
Author Bertl, Michael H ; Gotfredsen, Klaus ; Heimel, Patrick ; Lettner, Stefan ; Bertl, Wolfgang ; Bertl, Kristina ; Stavropoulos, Andreas
Date 2019
English abstract
PURPOSE: To assess the effect of the shooting angle variation on linear and planimetric measurements of the pink and white tissues on intraoral photographs. METHODS: From intraoral three-dimensional (3D) scans of the anterior region in 10 patients, ninety-nine two-dimensional (2D) "scan pictures" each were generated with different shooting angles, each varying in 5° horizontal and vertical increments. Eleven intraoral photographs of each patient and tooth site were taken free-hand: one shot at baseline and 5 shots after 3 and 6 months at slightly varying shooting angles. Papilla height (PH) and area (PA) and tooth crown area (TCA) were estimated on all photographs; the "best-match-to-baseline" photograph from those taken at 3 and 6 months was chosen by 6 evaluators. RESULTS: Within the first 10° of deviation from the baseline shooting angle, measurements on the 2D "scan pictures" distorted ≤0.5 mm for PH and ≤10% for PA and TCA. Compared to baseline, only 6 out of 100 photographs presented ≥0.5 mm difference in PH, none of the TCA measurements showed distortion ≥10%, and only in 4 instances a ≥10% distortion of the PA was observed. Poor to moderate inter- and intra-rater agreement in choosing the "best-match-to-baseline" photograph was found, but photographs with clinically relevant changes were only seldomly chosen. CONCLUSIONS: Deviations in the shooting angle ≤10° from the baseline shot cause clinically negligible distortions in linear and planimetric measurements. Highly comparable intraoral photographs of the anterior maxillary teeth can be captured "free-hand" in slightly varying perspective, and then selecting the "best-match-to-baseline".
DOI https://doi.org/10.1016/j.jpor.2019.04.001 (link to publisher's fulltext.)
Publisher Elsevier
Host/Issue Journal of Prosthodontic Research;4
Volume 63
ISSN 2212-4632
Language eng (iso)
Subject Distortion
Intraoral photograph
Intraoral scan
Reliability
Reproducibility
Shooting angle
Medicine
Research Subject Categories::ODONTOLOGY
Handle http://hdl.handle.net/2043/28584 Permalink to this page
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