If you have sparse teeth with large gaps, consider whether you have missing teeth yourself. Firstly, some patients are born with missing permanent teeth, and after eruption, they will have a large gap between their teeth, which requires timely orthodontic treatment to close the gap and make the teeth straight. Secondly, if the gap between the teeth gradually becomes larger and the teeth gradually feel sparse, it is likely that the patient is suffering from chronic periodontitis, which mostly occurs in middle-aged and elderly people around 40-50 years old and requires timely periodontal treatment. If the gap between the teeth becomes very large, you can also cooperate with orthodontic treatment to close the gap after periodontal treatment, which can achieve very good results.