Please explain why the dental laboratory technician needs a reproduction of the opposing (opposite) arch of the patient's mouth for designing an indirect restoration like an all-porcelain crown.

Additionally, list at least two types of dental materials that can be used in the office for capturing the bite registration to send to the lab.

The dental laboratory technician requires reproduction of the opposing arch of the patient's mouth for designing an indirect restoration, such as an all-porcelain crown, because it provides critical information about the patient's occlusion or bite.

Two types of dental materials that a dentist may use in the office to capture the bite registration include vinyl polysiloxane (VPS) and polyether. VPS is a type of impression material that is easy to mix and provides accurate detail reproduction.

It is also dimensionally stable, allowing for multiple pours of the impression without distortion. Polyether is another type of impression material that is known for its accuracy and tear strength. It has a fast setting time, which can help to save time in the office.

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