Thermoplastisized GP injection technique is indicated for obturation of:
Thermo plasticized GP injection technique: 
E.g. OBTURA 3 (cooling to temperature of 71 ºC) (same for OBTURA 2)  
Disadvantage: voids can be seen if vertical compaction not combined. 
Indication: Obturation for 

Internal resorption 
Perforation 
Complex root anatomy (most important) 
Open apex (obturation done with apical barrier).
Internal resorption.
Perforation.
Complex root anatomy.
All of the above.
All of the above.