Final answer:
Surgical intervention would not be involved in initial periodontal therapy; this treatment phase includes non-surgical procedures such as scaling, oral hygiene instruction, removal of contributing factors, and bite adjustment.
Step-by-step explanation:
The item that would not be involved in initial periodontal therapy is surgical intervention. Initial periodontal therapy typically includes non-surgical treatments aimed at controlling the infection and restoring periodontal health. This often involves scaling with hand instruments to remove plaque and tartar, oral hygiene instruction to prevent further plaque buildup, removal of contributing factors such as calculus or defective fillings, and sometimes bite adjustment to correct occlusal discrepancies that may contribute to periodontal stress. However, surgical intervention is usually considered when these initial non-surgical treatments are not sufficient to control the disease, making it a part of more advanced therapy rather than the initial phase.