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Parichart Pasukdee
*
Parichart Pasukdee
Thailand
Main Instructor 鄭信忠
Department / Institution Orthodontic Division of Dental department, Taipei Medical University Hospital
Classification Research report
  • ABSTRACT
  • TITLE
Objectives :
This study was to determine whether differences in personal background, demographic such as racial, ethnic, culture, economics and other social environment affected smile perception of esthetic and smile characteristics among orthodontists, general dentists, orthodontic patients, and laypersons of Taiwanese and Thais.
Materials & Methods:
 Using a computer-based questionnaires consisted of demographics survey and multiple choices of smiling photos. Total of 1,040 Thais and 773 Taiwanese were divided to dentist group (orthodontists and general dentists) and general people (orthodontic patients and laypersons) and asked to choose the most favored digitally altered smile of each variable. The frontal smiling photos were altered in various increments of arc ratio, most posterior upper teeth visible, upper teeth exposure, upper dental midline, lower teeth exposure, buccal corridor, maxillary gingival display, and cant. The result of demographics and smile variables were compared between two countries to analyze the different smile preferences and affecting factors.
Results:
 Demographic characteristics of the raters between dentists in Thailand and Taiwan showed statistically significant differences in aspect of gender, age, marital status, and religion. There also showed statistically different preference between dentists in Thailand and Taiwan in aspect of arc ratio, most posterior upper teeth visible, upper teeth exposure, lower teeth exposure, and buccal corridor, while the statistically different were found when compared between Thais and Taiwanese in aspect of arc ratio, most posterior upper teeth visible, upper teeth exposure, upper dental midline, lower teeth exposure, and buccal corridor in frontal smiling view. Overall analysis, dentist group between two countries have more consistent preferences in smile esthetics than general people group. However, it seems that Taiwanese preferred wider smile than Thais. In addition, some personal demographic data such as age, marital status, religion can affect dentists’ perceptions of esthetic smile, while many demographic factors of general people such as age, marital status, religion, education and income can affect their perceptions of esthetic smile.
Conclusions:
 Most of the smile variables were significantly different between both dentists and general people of Thailand and Taiwan. However, comparing between dentists (orthodontists and general dentists) of two countries has less different preferences of smile esthetics than between general people (orthodontic patients and laypersons). The perception of smile esthetics is subjective and can be influenced by personal background especially among general people.

The Study of Comparison on Smile Esthetic Between Taiwanese and Thai