What are the early symptoms of dentition thinning?

【Crowd】
There is a gap between the teeth caused by the amount of bone being greater than the amount of teeth. ​​

【Characteristics of sparseness】
1. Small amount of teeth and normal bone mass;
2. Large bone mass and normal tooth mass;
3. Small amount of teeth and large amount of bone;
4. Soft tissue factors. ​​

【Clinical manifestations】
1. The bone mass is greater than the tooth mass. ​​
2. There is a gap between the teeth.