Final answer:
The Angle's classification system was developed in the 1900s to provide a classification of malocclusion and help with diagnosis and treatment planning.
Step-by-step explanation:
The classification system developed in the 1900s to provide a classification of malocclusion and help with diagnosis and treatment planning is called the Angle's classification system.
Angle's classification system categorizes malocclusion based on the relationship between the maxillary and mandibular first molars. It is divided into three classes: Class I, Class II, and Class III.
This system helps dentists and orthodontists in determining the best treatment plan for malocclusion patients.