Unit:
Κατεύθυνση Οδοντική Χειρουργική (Κλινικές Ειδικεύσεις)Βιβλιοθήκη Οδοντιατρικής
Author:
Sakellaropoulos Orestis
Supervisors info:
Παναγιώτης Λαγουβάρδος, Καθηγητής,Τμήμα Οδοντιατρικής,Σχολή Επιστημών Υγείας, ΕΚΠΑ
Αφροδίτη Κακάμπουρα, Καθηγήτρια,Τμήμα Οδοντιατρικής,Σχολή Επιστημών Υγείας, ΕΚΠΑ
Απόστολος Τσολάκης, Αναπληρωτής Καθηγητής, Τμήμα Οδοντιατρικής,Σχολή Επιστημών Υγείας, ΕΚΠΑ
Original Title:
Η επίδραση της θέσης του άνω και κάτω χείλους στην ελκυστικότητα του χαμόγελου
Translated title:
The impact of the position of the upper and lower lip during smile in smile attractiveness
Summary:
Smile is a non verbative form of communication with many aspects in the social and personal life of individuals. Several muscle groups contribute to the manifestation of the smile. Upper teeth and upper and lower lips make up the smile image with lower teeth and upper gums being occasionally shown. Smile has different characteristics between the two sexes. Smile is gradually changing in the same person during age progression because its fundamental elements are changing also. The attractive smile is an esthetic composition. Achieving an attractive smile is the goal of esthetic dentistry and succeeding equals success in clinical practice.
Smile can be compromised by various factors. Smile esthetic problems have a deep interconnection. Gum exposure during smile depends on the smile line which is further defined as high, medium or low. Lower lip to incisal line distance is not fully defined. Every distance between 0 and 2 mm is considered esthetically acceptable.
Several questions concerning the impact of several smile parameters in overall smile esthetics remain unanswered. Purpose of this study is to examine the impact of the position of the upper and lower lip during smile in smile attractiveness both independently and in combination with each other. The role in smile evaluation of age, sex, education and occupation of the participants is also to be examined. The null hypothesis to be tested was that upper and lower lip position during smile has no impact in evaluating the attractiveness of the spontaneous smile and that age, sex, educational level and occupation do not affect the participants opinion on smile esthetics.
Digitally altered photos of a smile were presented to a sample of 130 participants (n=130). All photos came from one single smile photo where the upper and lower lip positions and the teeth brightness were changed. The smiles were subsequently organized in groups and the individuals were asked to choose the most attractive smile (MAS) and the least attractive smile (LAS) from each group. Age, sex, educational level and occupation were also evaluated as factors affecting the esthetic criteria of the participants.
Results show that a medium smile line is considered the most attractive and that the upper lip position is strongly correlated with the overall smile attractiveness. According to our results the lower lip position is considered the most attractive when gently touching the incisal edge of the central incisors but the lower lip position presented only a weak correlation with the overall smile attractiveness. Increased teeth brightness increased the attractiveness of the smile yet very high brightness was not considered attractive by the majority of the participants. Finally, age, sex, educational level and occupation affected the perception of MAS and LAS in different ways.
Main subject category:
Health Sciences
Keywords:
Impact, Upper lip, Lower lip, Position, Attractiveness, Smile
Number of references:
113
