Education
Maryam Omidkhoda; Farzin Heravi; Fatemeh Shahrestani; Mohamad Noori
Abstract
Aim: The purpose of the present study was to evaluate the accuracy of Dolphin Imaging version 11.8 software, in predicting soft and hard tissue changes after orthognathic jaw surgery.Methods: In this retrospective study, pre- and postoperative cephalograms and photographs of 20 patients were scanned ...
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Aim: The purpose of the present study was to evaluate the accuracy of Dolphin Imaging version 11.8 software, in predicting soft and hard tissue changes after orthognathic jaw surgery.Methods: In this retrospective study, pre- and postoperative cephalograms and photographs of 20 patients were scanned and inserted into Dolphin Imaging version 11.8 software and traced by the software. Cephalometric superimposition was performed before and after the operation to determine the extent of changes in each jaw. The software then simulated postoperative images according to the calculated changes for each patient.Results: The results of this study showed that the upper lip had the highest accuracy in both sagittal and vertical axes. The highest reliability was in the upper lip with 80% error in the sagittal axis and the tip of the nose with 80% error in the vertical axis. The lowest accuracy in our study was related to soft tissue Menton which had the least reliability with an error frequency of 35% and 45% in the sagittal and vertical axis, respectively.Conclusion: Based on the method used and the findings obtained by digital measurements, it can be concluded that the Dolphin Imaging version 11.8 software can be used to reliably predict hard tissue as well as soft tissue, especially in the upper lip area.
Shekoufeh Mohammadi; Ladan Eslamian; Reza Motamedian
Volume 15, Issue 2 , September 2020, , Pages 1-7
Abstract
Context: The nose and lips area play an important role in facial appearance and nasolabial angle (NLA) can be considered as a determinant factor for attractiveness. The perception of beauty and attractiveness is vastly influenced by media and thus, can change with trends over time. The aim of this study ...
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Context: The nose and lips area play an important role in facial appearance and nasolabial angle (NLA) can be considered as a determinant factor for attractiveness. The perception of beauty and attractiveness is vastly influenced by media and thus, can change with trends over time. The aim of this study was to conduct a systematic review of literature on NLA in faces perceived as attractive over time and in different ethnic groups.
Evidence acquisition: This study was performed following Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) guideline. We conducted an electronic search using PubMed, Scopus, and Embase databases with the employment of MeSH and free text terms "beauty"[MeSH], "esthetics"[MeSH], "soft tissue", "nasolabial angle", "attractive" and "cephalometric analysis". The inclusion criteria were studies that indicated facial attractiveness by a panel of at least 10 judges, evaluated the soft tissue profile characteristics, and reported the preferred NLA.
Results: The search results revealed 271 related articles, of which 21 studies investigated NLA as a conducive factor in profile attractiveness and were included in the review. The range of preferred NLA was 86° to 107° for men and 84° to 123.12° for women.
Conclusions: The most pleasing lip position and subsequently NLA is influenced by variables including the observer and subject’s gender, and their ethnic background as well as time. Over all, NLA in faces perceived as attractive is more obtuse in women than men. Compared to white norms, NLA is more acute among Chinese and African-Americans, while amongst Iranian women, it is not distinctly far from north American Caucasians. Over the course of time, preferred NLA has significantly changed in women but has been unwavering in men.
