Individualized Approach to Full-Arch prosthetics: how to choose between fixed and removable implant-supported restorations

Toshiki Nagai, DDS, MSD, FRCDC
Hawra Al-Khalaf, DDS, MSD.

Complete edentulism remains one of the most significant challenges in contemporary dental rehabilitation, profoundly impacting masticatory function, facial aesthetics, phonetics, and patient quality of life. The adoption of implant-supported prosthetic designs has significantly expanded treatment options for this patient category. However, the choice between fixed and removable full-arch prostheses still requires individualized clinical justification. The modern treatment concept moves away from universal solutions toward a personalized approach based on the anatomical, functional, and aesthetic parameters of each specific patient.

Key anatomical and aesthetic factors in selecting a prosthetic design

A crucial planning stage is a comprehensive assessment of the anatomy of the edentulous jaws and facial soft tissues. The position and size of the upper central incisor are considered the primary aesthetic benchmarks, determining smile harmony, upper lip support, and phonetic adequacy. Lip dynamics during speech and smile significantly influence the permissible level of visibility of artificial teeth and the prosthetic base. Equally important is the volume of lost hard and soft tissues, as pronounced atrophy of the alveolar ridge often requires significant prosthetic bulk to restore facial profile and the lower third. In such clinical scenarios, the choice of prosthetic design is directly linked to the possibilities of compensating for lost anatomy without compromising hygiene and long-term durability.

The form and morphology of the edentulous ridge, including within the context of the “lip-tooth-ridge” classification, play a crucial role in risk assessment and selection of the prosthetic design type, especially in maxillary rehabilitation (Fig. 1). This classification helps predict the aesthetic outcome, the need for prosthetic volume enhancement, and potential limitations of fixed restorations. Concurrently, patient preferences, their willingness to maintain the prosthesis, aesthetic expectations, and attitude toward removable designs should be considered as equally important clinical factors influencing the final decision.

Fixed and removable prostheses: what does the science say?

Results from clinical studies confirm that implant-supported rehabilitation significantly increases patient satisfaction with complete edentulism, regardless of the chosen prosthesis type. Prospective data demonstrate comparable improvements in quality of life with both fixed, implant-supported full-arch prostheses and implant-assisted removable overdentures. Although fixed restorations in some studies show slightly higher ratings for aesthetics, chewing efficiency, and subjective comfort, these differences do not always reach statistical significance. At the same time, removable prostheses demonstrate a significant improvement in oral hygiene indicators during follow-up, which is crucial for the long-term stability of peri-implant tissues.

The hygienic aspect becomes particularly significant in long-term clinical observation. The ability to remove a detachable prosthesis facilitates monitoring the condition of the mucosal lining, implants, and surrounding tissues, thereby reducing the risk of inflammatory complications. Fixed restorations, despite their high level of comfort and stability, place greater demands on patient motivation and adherence to individualized maintenance protocols. Thus, the choice of prosthetic design should consider not only the initial anatomical conditions but also the patient’s projected ability to maintain an adequate level of hygiene.

Individualization as the foundation of clinical decision-making

Contemporary implant-supported rehabilitation for patients with complete edentulism is increasingly grounded in patient-centered care principles. The decision between a fixed and removable full-arch prosthesis should be viewed not as a preference for one technology over another, but as a process of clinical analysis aimed at achieving an optimal balance between aesthetics, function, hygiene, and long-term result stability. Individualization of the prosthetic plan helps minimize complication risks and enhance patient satisfaction with the treatment.

In conclusion, it should be noted that both fixed and removable implant-supported full-arch prostheses are clinically justified and effective methods for rehabilitating complete edentulism. Their successful application is only possible with thorough diagnostics, consideration of anatomical and functional characteristics, and active involvement of the patient in the decision-making process. It is the personalized approach that remains the key factor determining the treatment prognosis and long-term clinical success.