Journal of Iranian Dental Association
J Iran Dent Assoc
Medical Sciences
http://jida.ir
23
journal23
2383-3041
10.52547/jida
en
jalali
1397
10
1
gregorian
2019
1
1
31
1
online
1
fulltext
en
Esthetic Perception of Recurring Esthetic Dental Proportion in
Different Lip Line Positions Among Lay People
Restorative Dentistry
Restorative Dentistry
Original
Original
<div style="text-align: justify;"><strong>Background and Aim: </strong>The proportion of smile is a useful tool for creating geometric smiles which are a critical aspect in esthetic dentistry. The aim of this study was to determine the effect of lip line position on acceptable Recurring Esthetic Dental (RED) proportion among lay people.<br>
<strong>Materials and Methods: </strong>A photograph of pose smile of a young female was taken. The position of the lip was changed by Adobe Photoshop CS6 software within three positions (low, medium, and high). Then, we created three RED proportions (54%, 62%, and 70%) for each lip line position. The photographs were ranked from most to least attractive (one to nine) by 40 lay people (20 females and 20 males) with a mean age of 19.4 years. Data were collected and analyzed using Friedman test. Pairwise comparisons were made using Bonferroni correction. The impact of gender on the ratings was evaluated using repeated measures analysis of variance (ANOVA).<br>
<strong>Results: </strong>In the medium lip line group, all three proportions had approximately the same preference rates. The 54% proportion was the least attractive one in the high lip line group (mean=6.819), and the 70% proportion was the least attractive one in the low lip line group (mean=6.881).<br>
<strong>Conclusion: </strong>The acceptable RED proportion cannot be evaluated without consideration of other factors such as lip line position. Esthetics is the result of a harmonious balance between different elements.</div>
Dental Esthetic, Smiling, Dental Photography
21
25
http://jida.ir/browse.php?a_code=A-10-1-922&slc_lang=en&sid=1
Parham
Pedram
2300319475328460021584
2300319475328460021584
No
PhD Candidate of Dental Biomaterials, Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sci-ences, Tehran, Iran
Hamid
Kermanshah
2300319475328460021585
2300319475328460021585
No
Associate Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran AND Department of Restorative Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
Reza
Nejatbakhsh
2300319475328460021586
2300319475328460021586
No
Orthodontist, Private Practice, Tabriz, Iran
Ladan
Ranjbar Omrani
ladanomrani@yahoo.com
2300319475328460021587
2300319475328460021587
Yes
Associate Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran AND Department of Restorative Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
Shiva
Rafiezadeh
2300319475328460021588
2300319475328460021588
No
Assistant Professor, Department of Restorative Dentistry, School of Dentistry, Bushehr University of Medical Sciences, Bushehr, Iran