Abstract:Root resorption is a physiological event for primary teeth. However, there are cases where these teeth are maintained beyond the normal exfoliation time, even when the corresponding permanent teeth is present. Since there are few data concerning the real cause of prolonged retention of primary teeth, the exact reasons must be investigated. The aim of this study was to assess if local factors like RANKL, RANK, OPG, MCP-1, RUNX2, or systemic factors such as vitamin D, PTH and IGF-I could to be involve in the bon… Show more
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