In the Type I bone description, which region is identified as the location?

In the Type I bone description, which region is identified as the location?

• A. Posterior mandible
• B. Anterior mandible
• C. Posterior maxilla
• D. Anterior maxilla

Answer: (A)

Dense cortical bone surrounds the implant site, producing the highest primary stability; that’s what Type I bone describes. In standard bone descriptions, this very dense, homogeneous cortical bone is identified in the posterior mandible, where the bone is thick and compact. That density means you’ll feel strong resistance when drilling, so technique matters—slower drilling, generous irrigation, and careful heat management to avoid overheating, while expecting excellent initial stability once the implant is placed. The other regions—anterior maxilla, posterior maxilla, and anterior mandible—tend to have more trabecular bone or thinner cortex, correlating with less dense bone patterns than Type I. Hence, the location described for Type I bone is the posterior mandible.

Dense cortical bone surrounds the implant site, producing the highest primary stability; that’s what Type I bone describes. In standard bone descriptions, this very dense, homogeneous cortical bone is identified in the posterior mandible, where the bone is thick and compact. That density means you’ll feel strong resistance when drilling, so technique matters—slower drilling, generous irrigation, and careful heat management to avoid overheating, while expecting excellent initial stability once the implant is placed. The other regions—anterior maxilla, posterior maxilla, and anterior mandible—tend to have more trabecular bone or thinner cortex, correlating with less dense bone patterns than Type I. Hence, the location described for Type I bone is the posterior mandible.