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Volume 34 , Issue 5
September/October 2014

Pages 623629


Analysis of Select Facial and Dental Esthetic Parameters

Sarah L. Nold, Dr Med Dent/Sebastian D. Horvath, Dr Med Dent/Susanne Stampf, Dr Rer Nat/Markus B. Blatz, Prof Dr Med Dent


PMID: 25171032
DOI: 10.11607/prd.1969

This clinical study examined objective smile parameters in the natural anterior dentition. Standardized intraoral and extraoral photographs were taken of 106 Caucasian adults (54 women, 52 men) with a healthy dentition. The following parameters were analyzed: correlation of dental and facial midline, upper lip position and curvature, relationship of the maxillary anterior incisal curve with lower lip, number of teeth displayed in a smile, distance between maxillary anterior teeth and lower lip, slope of tooth, and lip arc. The simple frequency distribution of measured variables revealed an average smile with coinciding dental and facial midlines, an average smile line, and a straight upper lip curvature. With an average smile, the maxillary anterior teeth did not touch the lower lip, teeth were displayed up to the second premolar, and the maxillary anterior incisal curve was parallel to the lower lip. Oval was the most prevalent tooth form. A slope of 9 degrees was detected for the mean tooth arc and 13 degrees for the mean lip arc. The outcomes of this clinical study provide a quantifiable frame for esthetic evaluation, treatment planning, and restoration fabrication. (Int J Periodontics Restorative Dent 2014;34:623629. doi: 10.11607/prd.1969)


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