| Abstrakt: |
The purpose of this study was to compare various formulas for idealized proportions of the maxillary incisors to the actual dimensions of natural teeth. The Mondelli formula 1 (MFl), Mondelli formula 2 (MF2), Albers formula (AF), esthetic proportion (EP) for width and height of anterior teeth, and golden ratio (GR) were calculated for a total of 50 dental students (30 women and 20 men) who participated in the study. The following measurements were obtained directly in the participant:s mouth with a digital caliper: the mesio- distal and incisogingival dimensions of the maxillary central proporincisors, lateral incisors, and canines: the intercanine distance; and the smile width. The participants were photographed, and the smile width was also measured on the photographs. The MFl and MF2 were each calculated twice, using both direct measurements and photographic measurements. The projected central incisor widths calculated using the MFl, MF2, and AF were compared among themselves and against the actual measurements using analysis of variance and Fisher test for multiple comparisons (a = 0.05). The EP and GR were analyzed using descriptive statistics. There was a statistically significant difference between all of the widths projected by the formulas and the actual widths of the central incisors (P < 0.05). Whether calculated from a direct or a photographic measurement, the incisor widths projected by the MFl and MF2 were statistically similar to each other (P > 0.05). The EP values were similar to those reported in the literature. Only 2% of the participants had an incisor width ratio (central incisor/ formulateral incisor) that matched the GR of 1.618, while 86% fell within the range of 1.2 to 1.4. Overall, the proportions calcu- lated with the MFl, MI:2, Ali EP, and GR did not exactly match the actual dimensions of natural teeth. The formulas and the formuproportions available in the literature can assist in esthetic planning, but the individual characteristics of each patient and expertise of the dentist should guide treatment for each case. [ABSTRACT FROM AUTHOR] |
