The function of space maintainer is to preserve arch length following the premature loss of a primary teeth. Early loss of primary tooth may compromise the eruption of succedaneous teeth if there is a reduction in the arch length. The Band and Crown Loop are used to maintain the loss of primary molar. https://www.spidertattooz.com/Tumma-figaro-kaulaketju-teras-kaulakoru-8mm-55cm/