Maxillary Reconstruction Using Subperiosteal Dental Implants: A Clinical Report

Hannah Machine, Sassan Nadjmi

Full text link: https://pubmed.ncbi.nlm.nih.gov/40325352/

Maxillary Reconstruction Using Subperiosteal Dental Implants: A Clinical Report

1. Scientific Reference

• Study Title: Maxillary Reconstruction Using Subperiosteal Dental Implants: A Clinical Report
• Authors: Hannah Machine, Sassan Nadjmi
• Journal: Journal of Prosthodontics
• Year of Publication: Not specified in the provided information.
• DOI: 10.1111/jopr.14066

2. Scientific Background

Rehabilitating patients with severe maxillary bone loss remains one of the greatest challenges in implant dentistry and oral reconstruction. This challenge becomes even more complex following partial maxillary resection performed for the management of odontogenic or oncologic conditions, where conventional implant placement is often compromised by insufficient residual bone volume. In such situations, treatment alternatives that avoid extensive bone grafting are of considerable clinical interest.

Recent advances in digital planning and CAD/CAM manufacturing have renewed interest in subperiosteal implants by enabling patient-specific frameworks that closely match individual maxillary anatomy. The present clinical report contributes to this evolving field by illustrating the use of a customized titanium subperiosteal implant for prosthetic rehabilitation after hemi-maxillectomy. Rather than evaluating long-term clinical outcomes, the report demonstrates the practical application of this digital workflow in a highly complex reconstructive scenario.

3. Study Objective

The purpose of this clinical report was to document the rehabilitation of a patient who underwent hemi-maxillectomy using a custom-made titanium subperiosteal implant supporting a maxillary implant-assisted complete denture. The authors aimed to illustrate the clinical application of this treatment approach in a patient presenting with severe maxillary bone deficiency where conventional bone augmentation was not considered feasible.

4. Methodology

This publication is presented as a clinical case report.

According to the information provided, treatment involved the placement of a patient-specific titanium subperiosteal framework designed using digital planning and CAD/CAM technology. Following surgical insertion, the framework was restored with an implant-assisted maxillary complete denture.

The abstract does not specify the surgical protocol in detail, the number of implants or fixation components, the duration of follow-up, clinical assessment criteria, or outcome measures. These aspects are not described in the available information.

5. Main Findings

The report describes the successful clinical implementation of a customized titanium subperiosteal implant in a patient previously treated with hemi-maxillectomy for ameloblastoma. The customized framework enabled rehabilitation with a maxillary implant-assisted complete denture despite substantial loss of supporting bone.

Rather than presenting quantitative clinical outcomes, the publication emphasizes the feasibility of combining digital design technologies with subperiosteal implant concepts in complex reconstructive cases. The authors also highlight that modern CAD/CAM manufacturing allows these implants to be accurately adapted to each patient’s residual bone anatomy.

No numerical outcomes, implant survival rates, complication rates, prosthetic performance data, or long-term follow-up results are reported in the available abstract.

6. Clinical Analysis

This clinical report highlights the potential role of digitally designed subperiosteal implants in selected patients presenting with extensive maxillary defects. Unlike conventional endosseous implant therapy, this approach relies on a patient-specific framework that conforms to the remaining bone surface, offering an alternative when bone augmentation procedures are not feasible.

The primary value of this publication lies in demonstrating the technical feasibility of integrating digital planning with personalized implant manufacturing in a complex reconstructive setting. It illustrates how advances in CAD/CAM technology have transformed a historical implant concept into a contemporary treatment option for carefully selected cases.

From a clinical perspective, however, the findings should be interpreted cautiously. As a single case report, the study does not provide evidence regarding reproducibility, long-term implant survival, biological stability, mechanical complications, or patient-reported outcomes. Consequently, while the report expands the range of reconstructive possibilities available to clinicians managing severe maxillary deficiencies, it should be viewed as descriptive clinical evidence rather than confirmation of treatment effectiveness. Larger prospective studies will be required to define the long-term clinical performance of digitally manufactured subperiosteal implants.

7. Clinical Applications

Based on the available information, this treatment approach may be relevant for patients presenting with severe maxillary bone deficiency, particularly following partial maxillary resection, when conventional implant placement and bone augmentation are not viable treatment options.

The report also illustrates the integration of digital workflow and CAD/CAM technology into implant reconstruction, supporting the fabrication of customized titanium frameworks tailored to individual anatomical conditions. The findings specifically relate to implant-assisted complete maxillary prosthetic rehabilitation following hemi-maxillectomy. The available data do not support extending these indications beyond the clinical situation described.

8. Level of Evidence, Limitations and Transparency

This publication represents a clinical case report, which corresponds to a low level of clinical evidence.

The findings are based on a single patient and therefore cannot establish the effectiveness, predictability, or long-term safety of customized subperiosteal implants.

The available abstract does not provide information regarding follow-up duration, clinical evaluation methods, complications, or study limitations beyond the inherent constraints associated with a case report.

No conflicts of interest, industry affiliations, or financial disclosures are mentioned in the information provided.

9. Key Study Points

• Study type: Clinical case report.
• Level of evidence: Low.
• Study population: One patient.
• Number of patients: One.
• Number of implants: Not specified in the provided information.
• Follow-up period: Not specified in the provided information.
• Primary outcome evaluated: Maxillary reconstruction using a customized titanium subperiosteal implant supporting an implant-assisted complete denture.
• Main finding: The report demonstrates the clinical feasibility of this personalized reconstructive approach following hemi-maxillectomy.
• Scientific conclusion: Digitally designed CAD/CAM subperiosteal implants may represent a reconstructive option for selected patients with severe maxillary bone deficiency when bone augmentation cannot be performed.
• Limitations: Single clinical case; no quantitative outcomes or long-term follow-up data available in the provided abstract.

10. Scientific Impact

This report contributes to the growing body of literature describing the modern evolution of subperiosteal implant therapy through digital technologies and patient-specific manufacturing. It illustrates how CAD/CAM workflows have revitalized a historical implant concept by enabling highly individualized reconstruction in anatomically challenging cases.

Although the publication does not provide comparative clinical evidence, it offers valuable documentation of a contemporary application in maxillary rehabilitation following oncologic surgery. Its scientific contribution is therefore primarily technical and descriptive rather than confirmatory. Future investigations involving larger patient cohorts, standardized outcome measures, and long-term follow-up will be necessary to determine the predictability, longevity, and clinical indications of digitally manufactured subperiosteal implants.

11. Editorial Conclusion

This clinical report presents an example of digitally planned maxillary reconstruction using a customized titanium subperiosteal implant following hemi-maxillectomy. It demonstrates how CAD/CAM technology can facilitate implant-supported rehabilitation in patients with severe bone deficiencies who are not suitable candidates for bone augmentation. Given the limited level of evidence and the absence of long-term outcome data in the available abstract, the findings should be interpreted as an encouraging clinical illustration rather than definitive evidence supporting widespread clinical adoption.