Collagen Matrix + rhPDGF-BB vs Connective Tissue Graft for the Treatment of Peri-implant Soft Tissue Dehiscences

Exclusion Criteria

• •Contraindications for surgery,
• •Systemic condition (e.g. diabetes mellitus, HIV, cancer, etc) that could compromise wound healing,
• •Patients pregnant or attempting to get pregnant (self-reported),
• •Untreated periodontitis,
• •Untreated peri-implant mucositis or peri-implantitis (Berglundh et al., 2018),
• •Smoking, defined as self-reported daily habit. Occasional smokers won't be excluded,
• •History of soft tissue grafting at the implant site showing PSTD within the last 6 months.
• •Indications for surgical intervention will be established based on patient's esthetic demands and peri-implant soft tissue phenotype.