“…Moreover, retaining teeth via supportive periodontal treatment (SPT) was shown affordable in several settings, with both initial and long-term costs generally being lower for retained teeth than for their replacement (Pretzl et al 2009, Fardal & Grytten 2013. Such replacement via implant-supported crowns (ISCs), however, is increasingly common, but generates high initial costs (Pretzl et al 2009, Fardal & Grytten 2013, Lang-Hua et al 2013, and might also be costly long term due to technical and biological complications (Jung et al 2012).…”