Which space maintainer is indicated for bilateral maxillary loss after premature loss of a primary molar?

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Multiple Choice

Which space maintainer is indicated for bilateral maxillary loss after premature loss of a primary molar?

When both sides of the upper jaw have lost primary molars early, you need a fixed appliance that can reliably hold the two maxillary molars in their positions and prevent them from tipping forward, which would waste space for the erupting permanent teeth. The Nance holding arch does exactly that: bands on the upper first molars connected by a palatal acrylic button that sits against the palate. This palatal support resists mesial movement of the molars and helps preserve the arch length and transverse width, keeping space for the erupting premolars on both sides. This is especially advantageous in bilateral maxillary loss because a fixed approach provides stability across the midline and doesn’t rely on patient cooperation like a removable appliance would. In contrast, a lingual arch is typically used in the mandible, not the maxilla, and a band-and-loop is best suited for a single missing primary molar or unilateral situations. A removable space maintainer is less stable and depends on the child’s compliance, making it less ideal for preserving bilateral maxillary space.

When both sides of the upper jaw have lost primary molars early, you need a fixed appliance that can reliably hold the two maxillary molars in their positions and prevent them from tipping forward, which would waste space for the erupting permanent teeth. The Nance holding arch does exactly that: bands on the upper first molars connected by a palatal acrylic button that sits against the palate. This palatal support resists mesial movement of the molars and helps preserve the arch length and transverse width, keeping space for the erupting premolars on both sides.

This is especially advantageous in bilateral maxillary loss because a fixed approach provides stability across the midline and doesn’t rely on patient cooperation like a removable appliance would. In contrast, a lingual arch is typically used in the mandible, not the maxilla, and a band-and-loop is best suited for a single missing primary molar or unilateral situations. A removable space maintainer is less stable and depends on the child’s compliance, making it less ideal for preserving bilateral maxillary space.

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