Replace a Full Arch of Teeth With Four Dental Implants
All-on-4 dental implants give patients missing most or all of their teeth a permanent, fixed solution in a single surgery day, without the waiting, the adhesives, or the limitations that come with removable dentures. Dr. Chris Cappetta, DDS, is a member of the Academy of Osseointegration and a graduate of the University of Texas Health Science Center at San Antonio. He has been placing and restoring full-arch dental implants at Fountain of Youth Dental for over 35 years.
Patients from Rogers Ranch, The Rim and the medical district area choose Fountain of Youth Dental for All-on-4 because Dr. Cappetta handles every phase of the restorative treatment in one office, from the 3D cone beam imaging used to plan implant placement to the final permanent bridge. The practice sits on Medical Dr inside San Antonio’s South Texas Medical Center, where the standard of clinical precision reflects the medical campus it is part of. You will not be referred to a specialist for any phase of this procedure.
Why All-on-4 Works: The Angled Implant Explained
Most patients know that All-on-4 uses four implants to support a full arch of teeth. What most patients do not know is why four implants are enough, and the answer is in how they are positioned. The two front implants are placed vertically, exactly like traditional single-tooth implants. The two rear implants are angled at approximately 30 to 45 degrees. That angle is not a shortcut. It is the clinical key to why All-on-4 works so well.
Angling the posterior implants allows Dr. Cappetta to anchor them into the denser bone at the front of the jaw, which most patients retain even after years of tooth loss. This strategic placement does the following:
- Two front implants placed vertically into the anterior jawbone for stability
- Two rear implants angled 30 to 45 degrees to maximize contact with available bone
- Angled placement uses the densest available bone without requiring a bone graft first
- Chewing forces distributed more evenly across the full arch through the angled design
- Titanium posts begin integrating with the jawbone immediately after placement
- Temporary full-arch bridge attached the same day so you leave with functional teeth
In his 35 years of implant dentistry, the most common finding Dr. Cappetta sees in patients who arrive believing they need bone grafting before any implant work is that the bone volume in the front of their jaw is actually sufficient for All-on-4 placement. Most patients who come in resigned to a bone graft first walk out of the consultation with a surgery date instead.
What Happens on Surgery Day and After
Surgery day at Fountain of Youth Dental begins with a final review of the 3D imaging and a discussion of anesthesia options. Most All-on-4 procedures are completed under local anesthesia with sedation available for patients who want it. The full surgery typically takes two to four hours per arch, and by the time you leave the office a temporary full-arch bridge is already in place. Most patients eat soft foods the same evening.
The healing phase is where the real work happens, and it is what most practices gloss over. The temporary bridge functions immediately but the implants need four to six months to fully integrate with the bone before the permanent bridge is fitted. Monitoring appointments during that window track healing, gum tissue health, and implant stability. Once osseointegration is confirmed, the permanent bridge is placed and the case is complete. In Dr. Cappetta’s experience, the most common reason an All-on-4 case takes longer than projected is slower-than-expected healing in patients who smoke or have conditions that affect blood flow. He flags any risk factors at the consultation so there are no surprises during recovery.
