You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following is not a factor in balanced occlusion? and explain in detail?
Definition: The bilateral, simultaneous, anterior and posterior occlusal contact of teeth in centric and eccentric positions (GPT8).
Lever balance: This is the relation of the tooth to its base of support. It is important when a bolus of food is placed in between the teeth on one side and a space exists on the opposite side . It is enhanced by the following:

Placing the teeth such that resultant direction of force on the chewing side is on the crest or slightly lingual.
Placing the teeth close to the ridge.
Denture base covering as wide an area as possible.
Reducing the buccolingual width of the teeth.

Key Concept:
Wider the ridge and narrower the teeth buccolingually, greater will be the balance.
Ref: Textbook of prosthodontics V Rangarajan Ed. 2nd