ArticleClinical, cosmetic and investigational dentistry2023
Validity and Reliability of Polarized vs Non-Polarized Digital Images for Measuring Gingival Melanin Pigmentation.
Article in Clinical, cosmetic and investigational dentistry, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
4 citing papers in PubMed.
- Photo-Based Color Analysis in Restorative Dentistry: The Role of Artificial Intelligence Algorithms.Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] · 2026Article
- Comparison of knowledge and esthetic perception regarding gingival pigmentation between students from different non-dentistry health profession programs.BMC medical education · 2025Article
- Clinical assessment of dental color during dehydration and rehydration by various dental photography techniques.Odontology · 2025Article
- Evaluation of the degree of knowledge of gingival melanosis between professionals and students: observational and cross-sectional study.Frontiers in oral health · 2025Article
Corrections and comments
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Aim: This study aimed to compare the validity and reliability of polarized and non-polarized intraoral photography for the measurement of gingival melanin pigmentation. Materials and Methods: A case series study was conducted on ten patients scheduled for gingival depigmentation. A total of 976 polarized and non-polarized image samples were collected, capturing two rows above the gingival margin, for analysis. These images were taken both before and one year after the depigmentation procedure. Three independent evaluators assessed the photographs (an orthodontist, a general dentist, and a layperson). The Dummett Oral Pigmentation Index (DOPI) and Gingival Melanosis Record (GMR) indices were used to measure the level of gingival pigmentation. Results: The study found no significant differences between polarized and non-polarized images taken before and after depigmentation. Both methods of imaging received similar scores from the evaluators. The orthodontist identified more pigmented slides than the layperson and the general dentist. Conclusion: Both polarized and non-polarized photographic methods may be used for assessing gingival pigmentation. However, further research is warranted to confirm this finding and examine additional factors.
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Registered trials
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