IADR Abstract Archives
Analaysis of Facial Proportion and Maxillary Anterior Teeth in Relation to Golden Proportion: In Thai Population
Objectives: To comparefacial types, facial proportions and analyze maxillary anteriorteeth proportions and determine the consistent relationships between tooth widths with several facial measurements with golden proportion (GP) and golden standard (GS) in Thai population.
Methods: Total 200 fully dentate adults (18-35 years) with well aligned maxillary anterior teeth without any attrition, caries and restorations were participated. Face heights and widths were measured directly by using digital caliper. For each subject, horizontal and vertical parameters of face were measured. The perceived width, actual width and heights were measured directly from casts by using digital caliper.One-way ANOVA was performed to compare crown ration of maxillary anterior teeth with different face types (α= 0.05).Pearson’s correlation was used (α= 0.05) to determine the correlation between facial proportion and teeth dimension amongdifferent facial types.
Results: In the studied population82.50% represent narrow face, 13.50% represent average and 4% represent broad face.Significant differences were found in facial index in three face types (p<0.05). Facial proportion in total population showed significant difference in BZW:IPD, MW:AW and T-SN:SN-M.Horizontal third of face in total population showed lower face was bigger than upper and middle face. No GP was found in face proportion and also no GP and GS were found compare to maxillary six anterior teeth in studied population.Width to height ratio of central incisor, lateral incisor and canine showed no significant difference with 3 face types except width to height ratio of canine between average and narrow face type (p<0.05) by One way ANOVA.No significant correlation was found between width of central incisor with interpupillarydistance and alar width.
Conclusions: The study findings may contribute to establish a guideline for prosthetic and orthodontic management by selecting proper size and form of maxillary anterior teeth to achieved proper esthetic outcome in Thai population.
Methods: Total 200 fully dentate adults (18-35 years) with well aligned maxillary anterior teeth without any attrition, caries and restorations were participated. Face heights and widths were measured directly by using digital caliper. For each subject, horizontal and vertical parameters of face were measured. The perceived width, actual width and heights were measured directly from casts by using digital caliper.One-way ANOVA was performed to compare crown ration of maxillary anterior teeth with different face types (α= 0.05).Pearson’s correlation was used (α= 0.05) to determine the correlation between facial proportion and teeth dimension amongdifferent facial types.
Results: In the studied population82.50% represent narrow face, 13.50% represent average and 4% represent broad face.Significant differences were found in facial index in three face types (p<0.05). Facial proportion in total population showed significant difference in BZW:IPD, MW:AW and T-SN:SN-M.Horizontal third of face in total population showed lower face was bigger than upper and middle face. No GP was found in face proportion and also no GP and GS were found compare to maxillary six anterior teeth in studied population.Width to height ratio of central incisor, lateral incisor and canine showed no significant difference with 3 face types except width to height ratio of canine between average and narrow face type (p<0.05) by One way ANOVA.No significant correlation was found between width of central incisor with interpupillarydistance and alar width.
Conclusions: The study findings may contribute to establish a guideline for prosthetic and orthodontic management by selecting proper size and form of maxillary anterior teeth to achieved proper esthetic outcome in Thai population.