The type of bone that typically encounters issues is known as the alveolar bone. Its primary function is to support and hold your teeth. When a tooth is absent, the alveolar bone starts to atrophy due to inactivity.
Moreover, the jawbone is reinforced and strengthened every time you chew. Consequently, alveolar bone loss can rapidly lead to jawbone loss as well.
Keep in mind that dental implants rely on osseointegration to function—meaning, the implant must bond with the bone to establish a stable foundation for the crown. If there is no bone available, placing an implant becomes unattainable.