The all on four implants are a total rehabilitation protocol that allows a full-arch prosthesis to be fixed on only four strategically placed implants - two axial anteriors and two tilted posteriors - to make maximum use of the available bone and avoid grafting in most cases.
At OralStudio, Medellín is indicated when you are looking to recover function, esthetics and confidence in the least number of appointments, with 3D digital planning and immediate loading when your case allows it.
What exactly is all on four implants and how does it work?
The biomechanical basis of the protocol is simple and powerful: four implants, with the posterior implants tilted to avoid anatomical structures (maxillary sinus or dental nerve) and widen the support polygon without resorting to grafts; a full arch screw-retained prosthesis is thus placed, often on the same day with a fixed provisional, and later the definitive one.
Why four implants (and not six or eight)?
For edentulous arches, the combination of two anterior and two posterior tilted implants provides sufficient stability for immediate loading in selected cases, simplifying surgery and reducing morbidity. Consensus and clinical literature maintain that four implants are sufficient to support an immediate fixed prosthesis when primary stability and occlusal control criteria are met.
Evidence and success rates
Reviews and longitudinal studies show high survival rates of implants and prostheses at 5-13 years in the maxilla, and follow-ups of up to 18 years in the mandible under the concept of All-on-4® All-on-4.
Ideal candidates and relative contraindications
The typical profile is an adult with multiple dental losses or non-rehabilitable teeth due to caries, periodontitis or fractures. Controlled systemic health and sufficient bone volume/density assessed by CT scan are required; smoking and bruxism are not ruled out at the outset, but require strict protocols and splinting. In some patients no are the best option (severe atrophies, specific esthetic expectations, need for removable segments); Therefore, the indication must be based on a comprehensive diagnosis, not on a “package”.
When not to start with all on four implants?
Untreated active periodontitis, poor hygiene, decompensated systemic diseases or inability to comply with maintenance are alerts. Your plan may require previous stages (periodontal therapy, habit control, selective grafting or even orthodontics) before a total fixed rehabilitation.
Realistic expectations: pink volume and “chunky” feel”
As the all on four implant replaces teeth and some of the lost soft tissue, the prosthesis integrates a “pink” component (prosthetic gingiva) that adds volume; this is normal and is explained at the diagnostic appointment to align expectations of sensation and phonetics.
The process at OralStudio: from simulation to a smile with All on Four Implants
The route is designed to respect your schedule and provide predictability.
1) Digital planning
We integrate CBCT + intraoral scanning + clinical photography to design position, angulation and depth of each implant; then we fabricate surgical guides and integrate the prosthetic plan with the surgical plan (prosthetically driven). This reduces uncertainty, improves fit and speeds up time.
2) Minimally invasive surgery and primary stability
Under local anesthesia and, if needed, conscious sedation, we perform necessary extractions and placement of four implants looking for primary stability suitable for immediate loading (when appropriate). The goal is to minimize wide flaps, shorten recovery and control edema.
3) Immediate temporary prosthesis (when applicable)
If we reach the torque/ISQ parameters defined in the plan, we install a temporary fixed prosthesis screwed the same day. You recover phonetics and esthetics while osseointegration occurs, with diet and guided care.
4) CAD/CAM definitive prosthesis
After integration, we design and fabricate the final prosthesis with digital flow (CAD/CAM) to optimize fit, strength and esthetics. Material and architecture depend on your occlusion, habits and expectations.
Clinical and functional benefits you will notice
Beyond “putting in teeth”, the all on four implants restore the efficient chewing, The fixed rehabilitation reduces chafing points and instability typical of removable dentures, and transmits functional load to the bone, favoring its maintenance. Fixed rehabilitation reduces chafing points and instability typical of removable dentures, and transmits functional load to the bone, favoring its maintenance.
Optimized times for demanding schedules
One of the main differentials is the immediate loading in appropriate cases: you leave with a temporary fixed smile while you heal, and return for your final in a few weeks/months, depending on the plan. This is especially valuable for executives, frequent travelers and international patients.
Simple (but non-delegable) maintenance
Your investment is protected with meticulous hygiene (interproximal brushes and water flosser), indicated rinses and regular controls for prophylaxis and occlusal adjustments. Long-term success depends on both surgery and maintenance.
Risks and complications:
No serious treatment is “risk-free”. In fixed full-arch may appear screw loosening, acrylic or ceramic fractures, mucositis/periimplantitis, etc. if care fails, and sensation of volume due to the pink component. The key is in the case selection, prosthetic design, habit control (tobacco, bruxism) and maintenance programmed.
Four vs. six dental implants
Comparative studies suggest that, when properly indicated, four implants can be non-inferior to six in 5-year marginal bone changes, with less surgical complexity. The final decision depends on your anatomy, bone density and esthetic/functional goals.
Immediate loading: essential criteria
It is not promised for everyone. Requires high primary stability, The use of the immediate loading criteria, adequate bone quality/volume and controlled occlusion to avoid micromovement, are criteria validated in immediate loading consensuses.
Dental tourism in Medellínall on four implants for international patients
Medellín is a health and design hub with a friendly climate and air connectivity; more and more patients are combining their comprehensive rehabilitation with short stays, supported by compact itineraries and bilingual communication. At OralStudio we coordinate online pre-assessment, condensed agenda (planning-surgery-provisional), lodging recommendations and remote follow-up, so that you live a safe, efficient and esthetic experience.
How to prepare your treatment trip?
Before flying, we share previous studies, medication and habits; upon your arrival, we confirm the diagnosis, perform the surgery and place a provisional if applicable. We define your second visit for the definitive one and maintain intermediate controls. This flow reduces displacements without compromising clinical quality.
What to expect when you return home
During the first weeks: soft diet, guided hygiene, avoid tobacco and efforts. If you bruxas, unloading splint to install the final. In case of any discomfort, we accompany you with telecare and we coordinate local visits if you need them, up to your control in Medellín.
Frequently asked questions about all on four implants
How long do they last?
The published results show high survival of implants and prostheses in medium and long term follow-ups, as long as you follow maintenance and controls. Longevity depends on hygiene, habits and prosthetic design.
Is grafting really avoided?
In most cases yes, thanks to the posterior tilt that takes advantage of the available bone; however, there are anatomies that require complementary procedures. The indication is personalized.
Does it look “fake”?
The goal is a natural smile: matching lip profiles and volumes, clean transition lines and stable color. The pink component is designed to harmonize with your biotype and phonetics. Catalog teeth“ occur when prosthetic/aesthetic principles are ignored or planning is skipped.
Does it cause pain?
With local anesthesia and modern protocols, surgery is well tolerated; most patients report manageable discomfort and progressive recovery. Guided planning helps reduce trauma and time.
Why choose OralStudio for your all on four implants?
Because we unite digital diagnostics, guided surgery, CAD/CAM laboratory and a multidisciplinary team. that plans first the prosthesis and then the surgery. Our approach prioritizes naturalness, function and longevity: from case selection to maintenance, we accompany you with a realistic and clear plan. If you value discreet results that look good, you are in the right place.
