Photographs as a means of assessing developmental defects of enamel

Abstract

Objectives: To evaluate the validity and reliability of photographic examinations for developmental defects of enamel (DDE) in maxillary and mandibular incisors and canines using a standardized process. Methods: The anterior teeth of 257 children were examined 'wet', both clinically and photographically for DDE, using the modified Federation Dentaire Internationale (FDI) (DDE) Index. A series of five standardized photographs were taken for each child: a frontal view perpendicular to the four incisors; two lateral views, each showing the lateral incisors and canines on each side of the dental arch; and the superior and inferior views, retaking of the frontal view with the camera held at approximately 30°above and below the horizontal plane. The photographs taken for each child were viewed as three different sets; the 'five-view' (frontal, two lateral views plus superior and inferior views), 'three-view' (frontal and two lateral views), and 'one-view' (frontal view only) slide sets. Results: Using 'one view' slides, 91.7% of teeth could be examined photographically. Whereas using multiple views 99.9% of teeth could be assessed. At the subject level, agreements between clinical diagnoses (gold standard) and photographic examinations were substantial to almost perfect (k = 0.73-0.86). At the tooth level, agreement was best for incisors (k = 0.71 or higher). The intra-examiner reproducibility was high for the photographic assessments at both subject and tooth levels (k = 0.71-0.95). Conclusions: Multiple-view photographic slides of 'five-view' and 'three-view' are valid and reliable for assessing DDE on the 12 anterior teeth, while a 'one-view' (frontal) was acceptable to study only the incisors. © Blackwell Munksgaard, 2005.