Which material would NOT typically be used in the construction of ramus frame implants?

The correct choice indicates that plastic is not a material typically used in the construction of ramus frame implants. Ramus frame implants, which are designed to provide support in the jawbone for dental prosthetics, require materials that offer excellent biocompatibility, mechanical strength, and stability over time.

CP titanium (commercially pure titanium) and titanium alloys are preferred because they have a favorable modulus of elasticity, excellent corrosion resistance, and good osseointegration properties. Surgical steel, while not as commonly used as titanium materials due to issues like corrosion and lesser biocompatibility, is still a strong metal option for various surgical applications, although its use in dental implants may be limited based on the specific clinical requirements.

Plastic does not meet these rigorous demands for load-bearing applications like ramus frame implants. It lacks the necessary mechanical strength and stability, especially in the oral environment where forces from chewing and the presence of moisture can degrade it over time. Therefore, plastic is not suitable for such biomedical applications where longevity and strength are crucial.