This fact is from Furcation & Mucogingival Surgery in Periodontology. It is a commonly tested concept in NEET MDS examinations. Understanding this fact is crucial for answering MCQs correctly.
Glickman Class I-IV furcation involvement classification
Nabers probe for furcation detection
Tunnel preparation = Class III furcation through and through
Root resection = hemisection or root amputation for Class II III
Free gingival graft = increase width keratinized tissue
Connective tissue graft = root coverage gold standard = subepithelial.