BACKGROUND Hyperactivity of depressor septi nasi muscle leads to smiling deformity and nasal tip depression. Lateral fascicles of this muscle help in widening the nostrils. The purpose of this study was to evaluate the relationship between the nasal length changes and the alar base and the alar flaring changes during smile. METHODS Standard photographs are performed in the face and lateral vi...

Parameters of dental beauty change across time for varying reasons. Thus, an understanding of the factors that help or harm the attractiveness of a smile is an important step in creating attractive smiles. This study aimed to identify factors that affect smile perception and attractiveness among the Saudi population. A cross-sectional study was conducted among the Saudi population. Questionnair...

Self-perception of Smile Aesthetics and Self-esteem By: Larry D. Scarborough Jr., D.D.S. A thesis submitted in partial fulfillment of the requirements for the degree of Masters of Science in Dentistry at Virginia Commonwealth University Virginia Commonwealth University, 2011 Major Director: Bhavna Shroff, D.M.D., M.S.D., M.P.A. Professor and Graduate Program Director, Department Of Orthodontics...

BACKGROUND CREBZF is a member of the mammalian ATF/CREB family of the basic region-leucine zipper (bZIP) transcription factors. Two isoforms of CREBZF have been identified from the alternative usage of initiation codons, SMILE (long isoform of CREBZF) and Zhangfei (short isoform of CREBZF). Until recently, the physiological function of CREBZF in mammalian reproductions has not been reported. ...

Purpose To evaluate transient corneal tissue healing and biomechanical changes between laser in situ keratomileusis (LASIK) and small incision lenticule extraction (SMILE) eyes. Methods In each patient, one eye underwent LASIK and the other underwent SMILE. Optical coherence tomography (OCT) and dynamic Scheimpflug imaging (Corvis-ST) was used to assess tissue healing and biomechanics, respec...

OBJECTIVE Smile esthetics has become a major concern among patients and orthodontists. Therefore, the aim of this study was: (1) To highlight differences in perception of smile esthetics by clinicians, orthodontists and laypeople; (2) To assess factors such as lip thickness, smile height, color gradation, tooth size and crowding, and which are associated with smile unpleasantness. METHODS To ...

We investigated persuasiveness as a social outcome of the ability to produce a deliberate Duchenne smile in a role-play task and of a participant’s use of a Duchenne smile while persuading someone in a live interaction. Participants were tasked with persuading an experimenter to drink a pleasant and unpleasant tasting juice as well as not drink a pleasant and unpleasant juice while being videot...

BACKGROUND Few studies have focused on the impact of malocclusion on lip - tooth relationships during smiling and speech. AIM To evaluate the impact of different malocclusions on lip - tooth relationships during smiling and speech, using video images. METHODS One hundred and three subjects with Class I (N = 31), Class II division 1 (N = 26), Class II division 2 (N = 16) and Class III malocc...