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Development of an illustrated index of tooth appearance–perception‐based quantification of tooth discolouration and surface defects
Author(s) -
MODI SOMA,
WILLIAMS LUCY,
GREENWOOD ROSEMARY,
DAVEY NEIL,
CRAWFORD PETER
Publication year - 2010
Publication title -
international journal of paediatric dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.183
H-Index - 62
eISSN - 1365-263X
pISSN - 0960-7439
DOI - 10.1111/j.1365-263x.2010.01053.x
Subject(s) - attractiveness , medicine , dentistry , disfigurement , perception , tooth surface , orthodontics , psychology , surgery , neuroscience , psychoanalysis
International Journal of Paediatric Dentistry 2010; 20: 293–304Background. Existing indices to quantify tooth discolouration are mostly aetiology‐specific. An index of tooth appearance (IOTA), derived from all types of tooth discolouration and surface defects, would allow the quantification of attractiveness for psychological assessment and treatment planning Objective. To develop a perception based IOTA for quantification of all forms of tooth discolouration and surface defects. Methods. One hundred images of discoloured teeth were twice ranked by a panel of judges according to perceived attractiveness. Mean image score was then used to arrange the images into a continuum of attractiveness and from these, ten images were selected, to constitute the illustrated IOTA. A second panel of judges assessed 35 clinical pictures using the IOTA, on two occasions. Results. The first 100 images were assessed with a correlation of 0.79–0.81 between the two ranking sessions and with intra‐group reproducibility of 0.8–0.94. The second panel of judges used the developed IOTA quickly, with an intra‐judge correlation of 0.87 and inter‐judge reliability of 0.72 and 0.74 for two sessions. Conclusions. The IOTA could be used by clinicians as a tool for quantifying disfigurement in teeth, irrespective of aetiology or histology.