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 type of pontic is best suited for long term provisional restoration: and explain in detail?
• Less strength compared to all metal pontics
• Poor abrasion resistance
• Staining at the resin metal interface
• Permeable to oral fluids
Because of all these disadvantages, it cannot be used as a permanent restoration.