TOPIC: BONE DEFECTS📌 POINTS TO PONDER 🔹 1.97 mm ± 33.16% is the distance between apical extent of calculus and alveolar crest. 🔹0.5–2.7 mm is the distance between attached plaque and alveolar bone. 🔹Rate of bone loss depends upon the type of disease present and tooth surface. An average of 0.2 mm/year on facial surfaces and 0.3 mm/year on proximal surfaces. 🔹 The most common bony lesion described and encountered in periodontal disease is the interdental crater. 🔹 Approximately 1.5–2 mm is the radius of action of bacterial plaque that can induce bone loss.
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