Which cusps are non-functional in standard occlusal function?

Which cusps are non-functional in standard occlusal function?

• A. Functional Cusps
• B. Non-functional Cusps
• C. Centric Contacts
• D. Working Side

Answer: (B)

In standard occlusal function, only certain cusps actually contact the opposing dentition in centric occlusion. The cusps that do this are the maxillary buccal cusps and the mandibular lingual cusps. The cusps that do not participate in centric contact are the maxillary palatal (lingual) cusps and the mandibular buccal cusps. These are considered non-functional in centric occlusion because they lie out of occlusion when the jaws are closed and typically come into play mainly during eccentric (non–centric) movements to guide the mandible and help protect the dentition. So, non-functional cusps are the ones that do not contribute to centric occlusal contacts.

In standard occlusal function, only certain cusps actually contact the opposing dentition in centric occlusion. The cusps that do this are the maxillary buccal cusps and the mandibular lingual cusps. The cusps that do not participate in centric contact are the maxillary palatal (lingual) cusps and the mandibular buccal cusps. These are considered non-functional in centric occlusion because they lie out of occlusion when the jaws are closed and typically come into play mainly during eccentric (non–centric) movements to guide the mandible and help protect the dentition. So, non-functional cusps are the ones that do not contribute to centric occlusal contacts.