The eruption of permanent teeth have a certain amount of time and sequence.
恒牙的萌出有一定的时间和次序。
2
Therefore, a deep understanding of the temporal and sequential characteristics of permanent teeth eruption will help dentists in the prevention and treatment of dental diseases.
因此，了解乳恒牙替换的时间和规律，为口腔医生对儿童口腔疾病的预防和治疗提供了参考依据。
3
The eruption of permanent teeth has certain characteristics, mainly temporal and sequential.