| dc.description.abstract | Objective: Determine the lip position influence on dental aesthetics in adults older
than 19 years according to academic publications in the last 5 years.
Material and methods: A systematic research was carried out in the medical
literature (UNAM, Cochrane, BVS, Scielo, PubMed), using the following search
strategy: (lip line) OR (smile line) AND (parameters) AND (analysis) AND
(evaluation) to identify articles that reported data on lip position parameters that
influence dental aesthetics. The results of each study were extracted and classified
as follows: smile line or lip line, length of the lip with the smile line, gingival display,
smile arc, smile type and upper lip curvature.
Results: From the 4497 articles analyzed, 17 studies were selected for the final
review process. Considering the studies in this literature review, the most frequent
criteria are: a midline smile, a low gummy smile line, a consonant smile arc, a static
smile, a commissural type of smile, and an upward curvature of the upper lip.
Conclusions: An aesthetically attractive smile includes different parameters, among
those that have a positive influence are a high or medium anterior smile line, a
parallel smile arc, straight or upward upper lip curvature, type of commissural smile
and a gingival exposure less than 2 mm. | |
