system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
The direct filling gold segments can be compacted:
assistant
The correct answer is  The gold segments can be compacted by hand pressure alone, by hand pressure combined with a hand mallet, or by a mechanical device  that is activated by a spring, pneumatic pressure, or electronically (using an electromallet). 
The direction of force application, the amount of applied pressure, and the compaction pattern are critically important factors controlling the quality of the gold restoration.

Ref:Phillip’s Science of Dental Materials ed 12 pg 414