Safe approach in "All-on-four" technique: a case report

Area of Science:

• Dentistry
• Oral Surgery
• Prosthodontics

Background:

• The All-on-Four concept offers a solution for full-arch rehabilitation in edentulous patients.
• Combining tilted and straight implants is a potential optimization for fixed prostheses.

Purpose of the Study:

• To evaluate the viability of using a combination of tilted and straight implants in the All-on-Four concept.
• To present a case report demonstrating this technique in a patient with significant mandibular atrophy.

Main Methods:

• Placement of four implants (tilted and straight) in the anterior region of a fully edentulous jaw.
• Immediate loading with a provisional, fixed, full-arch prosthesis.
• Management of a case with mandibular atrophy and specific anatomical considerations (mental foramina).

Main Results:

• The combined implant approach is a viable treatment modality.
• This method leads to a simpler, less time-consuming procedure.
• Reduced patient morbidity, decreased financial costs, and improved post-surgical comfort were observed.

Conclusions:

• The All-on-Four concept, utilizing a mix of tilted and straight implants, is an effective treatment for full-arch restoration.
• This technique offers significant advantages in terms of procedural efficiency, cost-effectiveness, and patient experience.
• The case report highlights successful application even in complex anatomical situations like severe mandibular atrophy.