Mastoid Obliteration: A Comparison of Two Techniques

Area of Science:

• Otolaryngology
• Biomaterials Science
• Surgical Innovation

Background:

• Canal wall down mastoidectomy creates a cavity requiring obliteration for optimal outcomes.
• Choosing the right obliteration material is crucial for surgical success and patient well-being.
• Bone pâté and bioactive glass are common materials with differing properties.

Purpose of the Study:

• To compare the efficacy and outcomes of mastoid obliteration using bone pâté versus bioactive glass granules.
• To evaluate cavity healing, subjective satisfaction, and obliteration effectiveness post-mastoidectomy.

Main Methods:

• A prospective, randomized, single-blind study involving 40 patients with chronic otitis media.
• Patients were divided into two groups: Group A (bone pâté) and Group B (bioactive glass).
• Assessment included cavity healing scores, subjective satisfaction, otoendoscopy, and HRCT at 4, 12, and 24 weeks.

Main Results:

• Bioactive glass demonstrated significantly better early healing at 4 weeks.
• At 24 weeks, both materials showed similar cavity healing rates and subjective satisfaction.
• Bioactive glass resulted in statistically better mastoid obliteration effectiveness and reduced external auditory canal volume.

Conclusions:

• Bioactive glass offers superior effectiveness in mastoid obliteration compared to bone pâté.
• While initial healing is faster with bioactive glass, long-term outcomes for healing and satisfaction are comparable.
• Bioactive glass is a promising material for mastoid obliteration following canal wall down mastoidectomy.