Space Maintainer
Space maintainer : is an intraoral fixed or removable appliances that preserve the space created by the premature loss of primary tooth or a group of teeth. 🟣 Types of space maintainers : 🔷️ 1- Removable appliances : Acrylic Partial Denture. The acrylic partial denture has been used successfully after the multiple loss of teeth in the mandible or the maxillary arch. This appliance is indicated when there has been bilateral loss of more than a single tooth and can be readily adjusted to allow for the eruption of teeth. 🔷️ 2- Fixed space maintainers : 🔘 The crown and loop : is the same as the band and loop but a stainless steel crown is used on the abutment tooth instead of the band. 🔘 the Nance holding arch : Used to maintains the maxillary 1st permanent molar positioning after prematurely loss of multiple primary molar in the same quadrant or bilateral loss of primary molars. 🔘 The passive fixed lingual arch : 1- After multiple loss of primary molars to maintain mandibular arch length and prevent mesial drifting and tipping or rotation of the permanent first molars ,also prevents lingual tipping of the permanent incisors. 2- Bilateral loss of primary molars after the eruption of lower lateral incisors. 🔘 The intra-alveolar (distal shoe) or distal extension appliance : used to prevent the mesial migration of the unerupted permanent first molar after premature loss of the primary second molar.
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