Figure 2. Types of endodontic access cavity design: Group I: Proximal cavity; Group II: Truss access cavity; Group III: A standard proximal cavity with separated buccal and palatal access through the proximal cavity without removal of dentine in between the canals; Group IV: A standard proximal cavity with both buccal and palatal access without the presence of dentin in between them; Group V: A standard proximal cavity with TradAC; Group VI: Mesio-occlusal-distal cavity.
