Final answer:
The correct material for constructing a custom dental tray is cold-curing acrylic resin. Dental amalgams, often used for fillings, contain mercury, which raises health concerns. X-ray images can showcase dental work such as fillings and the structure of the teeth.
Step-by-step explanation:
The student's question pertains to the material used to construct a custom dental tray for a specific patient. Based on the options provided, the correct answer is d) Cold-curing acrylic resin. This material is often used in dental laboratories to create a custom impression tray that fits the precise morphology of a patient's mouth. Alginate impression material is typically used for taking the initial impression, crown and bridge stone for creating models, and light-curing composite for restorative procedures.
Dental amalgams that contain silver and other metals are commonly used for fillings. While being economical and durable, concerns about mercury toxicity have been raised due to dental amalgams being approximately 50% mercury by weight. X-ray images, like those produced by typical X-ray machines in dental offices and shown in figures 8.25 and 30.24, can reveal the presence of fillings, among other aspects of dental health. The teeth's structure, including the crown, dentin, and enamel, may require different dental materials for various treatments.