Soft Tissue Augmentation at Single Implants With Collagen Matrix or Connective Tissue Graft: 7.5-Year Follow-Up of a RCT.

Intergroup differences fluctuated slightly across follow‐up intervals but did not reach statistical significance at any time point or overall ( p > 0.05). 3.3 Buccal Contour Changes of the Peri‐Implant Tissues At the 7.5‐year evaluation, volumetric analysis revealed minimal contour reduction in the SCTG group (−0.1 ± 0.2 mm), whereas the VCMX group demonstrated a greater decrease (−0.4 ± 0.4 mm), corresponding to an adjusted mean difference of −0.2 mm (95% CI −0.5 to 0.0; p = 0.068).

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