In the childhood dental replacement phase, the permanent anterior tooth germ is located on the lingual side of the root of the baby tooth. Below, the roots of the deciduous teeth gradually absorb and cause the teeth to loosen, the same is true. At the same time, the permanent tee

1. What is double-row teeth?

During the period of childhood teeth replacement, some children's permanent teeth have grown, but the corresponding deciduous teeth are reluctant to fall off for a long time, causing the permanent teeth to erupt from the back, forming a double-row teeth one front and one back. This situation is called deciduous teeth retention , also known as "double-row teeth".

upper teeth have double rows of teeth, and the deciduous teeth have not fallen off

2. Causes of double rows of teeth formed

1. Children have good nutritional supply, which makes the germ develop early, and the dental teeth have erupted but the deciduous teeth have not fallen off.

2. The diet is too fine and the food is too soft, which makes the roots of the baby teeth fully stimulate and exercise.

3. Deciduous teeth lesions, serious deciduous teeth caries cause root absorption disorders

, etc., which prevent the deciduous teeth from falling off in time.

3. The harm of deciduous teeth retention

Untimely treatment of deciduous teeth will cause ectopic eruption of permanent teeth, resulting in uneven arrangement of teeth, affecting normal occlusal and inhibiting jaw bone development, and

affecting the shape and beauty of children's facial shape and beauty; it is not conducive to children's teeth cleaning, and

is prone to food impaction, causing bad breath, and affecting oral hygiene. The residual roots and crowns of the deciduous teeth are retained, which can easily damage the oral mucosa and cause bacterial sensation.

Lower teeth double row teeth just fell off