What issue may cause a fracture in a bridge between teeth 6 and 11?

What issue may cause a fracture in a bridge between teeth 6 and 11?

• A. Improper alignment
• B. Cement failure
• C. Bending of metal
• D. Acid erosion

Answer: (C)

The correct identification of bending of metal as the cause of a fracture between teeth 6 and 11 can be attributed to the nature of dental prosthetics and the types of forces they encounter. When a bridge spans the space between two teeth, it is subjected to various mechanical stresses, especially from chewing forces. If the supporting structure or the metal framework of the bridge is not adequately designed to handle these forces, it may bend or deform under pressure. This bending can lead to stresses that exceed the material’s limits, ultimately resulting in a fracture. Considering the other options, improper alignment typically pertains to the fit and position of the bridge, which may create discomfort or functional issues but is less directly related to causing a fracture compared to metal bending. Cement failure pertains to the adhesive component used to secure the bridge; while it can lead to loosening or dislodgment, it does not directly contribute to structural fracture. Acid erosion, a factor affecting enamel and dentin, would lead to decay or weakening of the tooth structure and not directly cause a fracture in the metal framework of the bridge itself. Thus, bending of metal stands out as the most plausible cause of fracture in this particular situation.

The correct identification of bending of metal as the cause of a fracture between teeth 6 and 11 can be attributed to the nature of dental prosthetics and the types of forces they encounter. When a bridge spans the space between two teeth, it is subjected to various mechanical stresses, especially from chewing forces. If the supporting structure or the metal framework of the bridge is not adequately designed to handle these forces, it may bend or deform under pressure. This bending can lead to stresses that exceed the material’s limits, ultimately resulting in a fracture.

Considering the other options, improper alignment typically pertains to the fit and position of the bridge, which may create discomfort or functional issues but is less directly related to causing a fracture compared to metal bending. Cement failure pertains to the adhesive component used to secure the bridge; while it can lead to loosening or dislodgment, it does not directly contribute to structural fracture. Acid erosion, a factor affecting enamel and dentin, would lead to decay or weakening of the tooth structure and not directly cause a fracture in the metal framework of the bridge itself. Thus, bending of metal stands out as the most plausible cause of fracture in this particular situation.