You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is The orthodontic diagnosis focuses on and explain in detail?
There are two types of smiles: the posed or social smile, and the emotional smile. 
The social smile is reproducible, and is the one that is presented to the world routinely. 
The emotional smile varies with the emotion being displayed. 
The social smile is the focus of orthodontic diagnosis.
Contemporary orthodontics, Proffit, 4th edition page 186