A charming smile opens the door of happiness and knocks down the sadness surrounding it. It is the gateway to enter this beautiful world. The whole efforts of cosmetic dentist Toronto lie in achieving a “balanced smile”. Orthodontists treat the patient to create the harmonious balance between the patient and the world by creating the most attractive smile suited to every individual patient. This can be done by appropriate positioning of the teeth and gingival scaffold within the dynamic display zone.
The smile arc is defined as the relationship of the contour of the incisal edges of the maxillary anterior teeth relative to the curvature of the lower lip. Based on this relationship, the types of smiles arcs are:
1) Straight arc
2) Consonant arc
3) Non- consonant arc
Consonant arc: In this smile arc, a curvature is formed by the incisal edges of the maxillary anterior teeth parallel to the upper border of the lower lip. Here, the centrals should appear slightly longer than the canines along the incisal plane.
Non-consonant arc or Reverse arc: In this arc, the incisal edges of the maxillary anterior teeth are curved in reverse to the upper border of the lower lip. Here, unlike the consonant arc, the centrals are shorter than the canines along the incisal plane which can be due to occlusal malfunction or loss of vertical dimension.
Straight arc: In this smile arc the incisal edges of the maxillary anterior teeth form a straight line to the upper border of the lower lip. They provide better esthetics than a reverse smile.
Based on these arcs, LR Rubin in 1950, classifies the smile into three toes:
1) The Commissure Smile
2) The Cuspid Smile
3) The complex Smile
1) The Commissure Smile: Found in 67% majority of the world’s population. The mouth corners are first pulled up and outwards and then the levators of the upper lip contract. Only the upper teeth are shown. The central incisors are the lowest incisal edge of the maxillary teeth. Some famous personalities having the commissure smiles are Dennis Quaid, Jennifer Aniston, Jerry Seinfeld, Frank Sinatra, Jamie Lee Curtis, and Audrey Hepburn.
2) The cuspid smile: Found in 31% of the population, in this smile the leavtor labiii superior is very much dominant. The lips take the shape of a diamond. First, the lips contract exposing the cuspid teeth. Later the mouth corners contract to pull lips upward and outward. The corners of the mouth are less superior to the lip height above the maxillary cuspids. There is a “gully wing” effect which allows the maxillary premolars turn. Tom Cruise, Angelina Jolie, Drew Barrymore, Sharon Stone, Linda Evangelista, and Tiger Woods have this type of smile.
3) The complex smiles: Found only in 2% of the world’s population, here both the upper and the lower lip get pulled up during the smile. The levators of both upper corners and the depressors of the lower lip contract simultaneously. Both upper and lower teeth are visible. Julia Roberts, Oprah Winfrey, Cameron Diaz, and Britney Spears have this smile pattern.
The Cosmetic dentist Toronto allows you to change the smiles you have with the orthodentistry methodology and look more pleasing and beautiful.