Final answer:
Malocclusion can be caused by poor oral hygiene, oral infections, and dental problems leading to malnutrition.
Step-by-step explanation:
In a class I malocclusion, a normal molar relationship exists, but malocclusion can be caused by several factors:
- Poor oral hygiene: Insufficient dental hygiene can lead to conditions like dental caries, tartar, and gingivitis, which can contribute to malocclusion.
- Oral infections: Other infections in the oral cavity, caused by different microbes, can also result in malocclusion.
- Dental problems and malnutrition: Poor oral health, including painful or loose teeth, can affect eating habits and contribute to malnutrition, which can then impact overall health and potentially lead to malocclusion.