The main reason for the growing gap between teeth is the gingival atrophy caused by age change, which leads to the exposure of root. Another important reason is the increase of gap between teeth caused by severe periodontitis. Generally speaking, the gap between teeth due to age change can be enlarged without special treatment. If dentin hypersensitivity or even pain and discomfort is caused by more root exposure, intervention measures such as desensitization treatment and dental treatment should be taken. If periodontitis leads to the expansion of the teeth, it should be treated in turn: basic treatment of periodontitis, periodontal surgery and a series of treatments. After periodontitis is controlled again, if the gap between teeth is large, patients with high aesthetic requirements can be treated with porcelain veneer until all-ceramic crown is restored.
At present, there are 20,000 doctors engaged in orthodontics in Invisalign, and Zhou Yanheng is the certified doctor No.0001in Invisalign. Saide Sunshine Dental has about 70 orthodontists, many of whom are the first batch of certified doctors in China (in other words, Invisalign Chao 10) and official lecturers in Invisalign. He studied under Professor Zhou Yanheng's doctor of nursing, and is currently the training director of Saide Sunshine Stomatology and the director of Invisalign China Center. He completed the first tooth extraction treatment in Invisalign and the first bimaxillary protrusion treatment in China, and was the first doctor in China to give a speech at the main venue of the Invisalign International Forum.