This document discusses periodontal surgery techniques and outcomes. It compares outcomes of different techniques such as open flap debridement (OFD), OFD with bone graft, and guided tissue regeneration (GTR). OFD results in limited pocket reduction and clinical attachment level (CAL) gain of 1.5mm, while OFD with bone graft achieves 2.1mm CAL gain and 1.1mm bone fill. GTR achieves prominent pocket reduction and 4.2mm CAL gain and 3.2mm bone fill. The document also discusses the minimally invasive surgical technique (MIST) which aims to reduce surgical trauma and allow stable primary closure. MIST results in less post-operative discomfort and faster healing compared to