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Published on: December 5, 2025
Bioactive glass hydroxyapatite in fronto-orbital defect reconstruction.
Kalle M J Aitasalo1, Matti J Peltola
1Turku, Finland From the Department of Otorhinolaryngology-Head and Neck Surgery, Turku University Hospital.
This study evaluated the use of bioactive glass and hydroxyapatite in reconstructing fronto-orbital defects in patients with chronic sinusitis, trauma, or tumors. Researchers reviewed clinical outcomes in 150 patients over up to five years. They found that these materials provided stable and reliable results with few reoperations. Functional and aesthetic outcomes were generally good, and no donor-site complications were observed. However, the authors caution that long-term data are still needed to determine if these materials can fully replace traditional tissue grafts.
Area of Science:
- Biomaterials in reconstructive surgery
- Orbital and cranial defect repair
- Tissue engineering in head and neck surgery
Background:
Current reconstructive methods for head and neck defects often involve tissue grafts, which can lead to donor-site complications. Prior research has shown that synthetic biomaterials may offer alternatives with fewer risks. However, long-term outcomes remain unclear. This gap motivated a closer look at newer materials like bioactive glass and hydroxyapatite. These materials are known for osteoconductive properties and the ability to bond with bone. No prior work had resolved whether they could replace traditional grafts effectively. Their antimicrobial properties suggest potential benefits in reducing infection risks. That uncertainty drove this study to evaluate their clinical performance in real-world settings.
Purpose Of The Study:
The aim of this study was to assess the clinical effectiveness of bioactive glass and hydroxyapatite in reconstructing fronto-orbital defects. These materials were tested in patients with chronic sinusitis, trauma, and tumors. The specific problem addressed was the need for reliable, non-invasive reconstruction options. Traditional grafts have limitations, including donor-site morbidity. This study sought to determine whether these synthetic materials could provide stable and functional outcomes. The motivation came from the lack of long-term data on such biomaterials. Researchers aimed to evaluate both functional and aesthetic results. The goal was to compare these materials against conventional methods in terms of stability and complications.
Main Methods:
The study used a retrospective analysis of 150 patients who underwent fronto-orbital reconstruction. Patient records were reviewed for surgical procedures, materials used, and outcomes. The sample included patients with chronic sinusitis, trauma, and tumor resections. Data on complications and reoperations were collected over a follow-up period of up to five years. The primary tools were bioactive glass and hydroxyapatite implants. Researchers evaluated functional and aesthetic outcomes using clinical records. No new experiments were conducted—only existing patient data were analyzed. The approach focused on comparing outcomes across different patient groups.
Main Results:
Of the 62 patients with frontal sinus obliteration, three required reoperation due to mucocele formation. In the 65 trauma patients, four reoperations occurred in the orbital floor. Among the 23 tumor patients, two had reoperations for mucocele. Survival rates were high, with all benign tumor patients and six of 11 malignant tumor patients surviving. No major complications were reported in the majority of cases. Functional and aesthetic outcomes were generally favorable. Donor-site morbidity was not observed in patients using these materials. These findings suggest the materials are stable and reliable in clinical settings.
Conclusions:
The authors state that bioactive glass and hydroxyapatite appear to be stable and reliable in reconstructive surgery. They propose that these materials could serve as suitable alternatives to traditional grafts. The study suggests that these materials offer functional and aesthetic benefits without donor-site complications. However, the authors caution that long-term outcomes are still needed to confirm their effectiveness. No essential role for these materials was claimed—only that they are promising. The authors note that reoperations occurred in a small percentage of cases. They conclude that more data are required to determine if these materials can fully replace tissue grafts. Their findings support further investigation into the long-term performance of these biomaterials.
Frequently Asked Questions
The authors report good functional and aesthetic results with minimal donor-site morbidity.
A retrospective analysis of 150 patients with chronic sinusitis, trauma, or tumor resections was conducted.
Mucocele formation led to reoperations in 4.8% of frontal sinus obliteration cases.
A follow-up of up to five years was used to assess long-term stability and complications.
Two of 23 (9%) tumor and trauma patients underwent reoperation due to mucocele.
The authors propose that more long-term data are needed before these materials can fully replace tissue grafts.

