Bone deficiency no longer prevents successful implant therapy. Modern surgical options—bone grafting, sinus-lift procedures, and the use of narrow-diameter or short implants—compensate for lack of native bone and achieve high success rates in most cases. Within the first six months after a tooth is extracted, the alveolar ridge can shrink by roughly 29–63 percent horizontally and 11–22 percent vertically, making timely treatment essential for optimal functional and aesthetic outcomes. When residual posterior-maxilla height falls below 5 mm, a sinus lift restores height while maintaining implant survival around 98 percent. For horizontal deficits, ridge augmentation techniques (GBR, ridge split, or onlay grafts) yield six-year survival rates above 99 percent, statistically matching nongrafted controls. Titanium–zirconium narrow-diameter implants (3.3 mm) report five-year success between 96 and 100 percent, reducing the need for grafting. Likewise, “short” implants under 10 mm perform comparably to standard-length screws placed in grafted bone. Smoking compromises peri-implant tissues and raises failure risk; quitting at least two weeks before surgery and remaining tobacco-free through healing can accelerate recovery by about 70 percent. During the first 24 hours after surgery, avoid spitting and vigorous rinsing to preserve the blood clot; from day two, gentle warm-salt rinses and refraining from strenuous exercise promote healing. In short, with the right surgical technique, graft material, or narrow/short implant selection, high success rates can be achieved even when bone volume is insufficient.