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Change of chin appearance 3 weeks after chin augmentation. (A) Before procedure, (B) 3 weeks after procedure. Filler and botulinum toxin were injected into a 60-year-old woman who had a small chin (12th case from Table 1 and 2).
Source publication
Background : : For correction of small chin, surgical genioplasty, allograft implantation, and injectable filler have been widely used. Among these, the injectable fillers is a simple, non-invasive procedure that has minimal downtime and low risk of complications. It has been commonly injected at intradermal, subdermal, submuscular and supraperiost...
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Chin and jawline are landmarks of lower face. They are important for facial esthetics. Despite the availability of surgical techniques to improve lower face esthetics, minimal invasive procedures are often preferred by patients. Hyaluronic acid and calcium hydroxyapatite fillers are useful tools for enhancing appearance of chin and jawline.
Citations
... This method of placement showed a promising technique in the midface and chin. Less postoperative complications and desirable aesthetic outcomes partly are due to creating a skeletal support for the overlaying soft tissues thus reducing drooping or sagging [14][15][16][17]. ...
Recently, the use of noninvasive facial cosmetic procedures has been widely disseminated. In the face, cosmetic fillers, threads, and implants are used to reduce or delay the effects of aging or adjust facial defects caused by trauma or disease. The dentist or dental specialist may encounter these materials in the radiographic images of their patients. There are few reports in the dental literature describing the radiographic appearance of some materials along with the diseases they mimic. As the procedures and materials advance and evolve, dentists and dental specialists must be aware of their radiographic appearance to avoid errors in diagnosis. This is a report of two cases that include panoramic radiography and CBCT scan. Among these cases, there is an unusual appearance of a cosmetic filler due to a subperiosteal injection method. Moreover, it will discuss common types of cosmetic materials used in the face and their imaginological appearance. This is the key to dentists and dental specialists due to increasing use of facial cosmetic materials and a parallel increase in the use of cone beam CT and chances to encounter such findings.
Background
This study aimed to assess the correlation of social smile symmetry with facial symmetry.
Methods
In this cross-sectional study, frontal view photographs were obtained from 169 eligible patients at rest and smiling with a camera at the level of their nose tip. Several landmarks were selected for facial symmetry and measured at rest and social smiling at the two sides of the face. The respective formula was used to calculate the asymmetry index (AI). The mean values for each AI were calculated, and the correlation between the criteria for a symmetric smile in a social smile with the criteria for facial symmetry, and the correlation between the difference in symmetry criteria at rest and social smiling with facial symmetry criteria were analyzed.
Results
Significant correlations were noted between Oc-b AI (smile) and Sn-B (rest) facial AI (P = 0.046), An-a (smile) AI and Gn-a (rest) facial AI (P = 0.002), An-b (smile) AI and Sn-b (rest) facial AI (P < 0.001), Pog-a (smile) and Sn-a (rest) facial AI (P < 0.001), Nt-a (smile) and Sn-a (rest) facial AI (P < 0.001), Nt-b (smile) and Sn-b (rest) facial AI (P < 0.001), Ph-a (smile) and Sn-a (rest) facial AI (P < 0.001), Ph-b (smile) and Sn-b (smile) facial AI (P = 0.007), Oc-b AI (difference) and Gn-b (rest) facial AI (P = 0.031), Oc-Pog (difference) AI and Gn-b (rest) facial AI (P = 0.041), An-b (difference) AI and Sn-b (rest) facial AI (P < 0.001), Nt-a (difference) and Sn-a (rest) facial AI (P = 0.006), Nt-b (difference) and Sn-b (rest) facial AI (P < 0.001), and Ph-b (difference) and Sn-b (rest) facial AI (P < 0.001).
Conclusions
A significant correlation exists between social smile symmetry and facial symmetry.
