Loss of a primary tooth can happen from trauma or tooth extraction. One of the consequences of this loss is that the permanent molars tilt in the space left by the primary tooth.
That inclination will cause a bad bite and in addition to taking away space from the future permanent tooth that will erupt. Space maintainers protect the space left by the primary tooth, for when new permanent teeth appear.
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ORTHODONTICS : Serial extraction of primary teeth
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Source: Youtube / VillageGreenDental60
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