The effect of immediate implant placement on alveolar ridge preservation compared to spontaneous healing after tooth extraction: soft tissue findings from a randomized controlled clinical trial

to compare soft tissue dimensional changes and relative differences in soft and hard tissue volumes 4 months after single tooth extraction and 3 different treatment modalities: spontaneous healing (SH) and alveolar ridge preservation by means of a deproteneized bovine bone mineral and a collagen matrix, with (IMPL/DBBM/CM) or without (DBBM/CM) immediate implant placement.