Extraction of a primary tooth it is often a dilemma whether to merely remove the unsaveable tooth, to extract a contralateral tooth from the same arch (balance) designed to minimize centerline shift, or to extract a tooth from the opposing arch ( compensation) designed to minimize occlusal interferance by allowing teeth to maintain occlusal relationships as they drift.
Early loss of one primary canine cause centerline shift.The more crowded the dentition, the more the need for balance extraction. Centrelines shift with complete space closure, delay balancing extraction until a full orthodontics assessment is made. Loss of a primary second molar, especially the second may allow mesial drift of the first permanent molar.There is no need to balance extraction because this will have no appreciable effect in centerlines . However this extraction may allow forward movement and tilting of the adjacent first permanent molar .Therefore consideration should be given a space maintainer
Early loss of one primary canine cause centerline shift.The more crowded the dentition, the more the need for balance extraction. Centrelines shift with complete space closure, delay balancing extraction until a full orthodontics assessment is made. Loss of a primary second molar, especially the second may allow mesial drift of the first permanent molar.There is no need to balance extraction because this will have no appreciable effect in centerlines . However this extraction may allow forward movement and tilting of the adjacent first permanent molar .Therefore consideration should be given a space maintainer
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Dok, cepet lulus kuliah dok, biar bisa ngajar DDM en pencabutan seri lagi...hehehe
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