1. The instrument may not have been disinfected with a chance to get germs from the saliva of a person prior to infection, such as hepatitis B, diphtheria, polio, influenza, tuberculosis, flu
2. No material quality. contaminants are heavy metals such as arsenic, lead accumulates in the body if it will cause harm to the body
3. The process of making unsafe because people do not dentists
4. customized orthodontic wire by. without the knowledge to make the arrangement of the teeth change. A toothache can cause teeth to become hacked to death. And may be rooted teeth, then dropped to
5. Wearing braces fashion, often causing a cut cheek. Or oral tissues become vulnerable to cancerous wounds and tetanus.
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