Fluoride therapy for cochlear otosclerosis? an audiometric and computerized tomography evaluation

Area of Science:

• Otolaryngology
• Audiology
• Medical Research

Background:

• Cochlear otosclerosis is a condition that can lead to progressive sensorineural hearing loss (SNHL).
• The efficacy of fluoride therapy in managing SNHL associated with cochlear otosclerosis requires further investigation.

Purpose of the Study:

• To evaluate the impact of fluoride therapy on the progression of SNHL in patients with cochlear otosclerosis.
• To compare the effectiveness of fluoride treatment against a control group of untreated patients.

Main Methods:

• A comparative study involving 19 patients treated with fluoride for 1-5 years and 22 untreated controls.
• Audiometric evaluation of sensorineural hearing loss (SNHL) at various frequencies.
• Visual assessment of CT scans for eight patients before and after fluoride treatment.

Main Results:

• Fluoride therapy significantly arrested SNHL progression at both low (250-1,000 Hz) and high (2-4 kHz) frequencies (p < 0.001 and p = 0.008, respectively).
• Treatment appeared more effective for higher frequencies in patients with initial SNHL < 50 dB.
• No significant difference in efficacy was observed between 4-year and 1-2-year fluoride treatment durations.
• Minimal SNHL deterioration occurred in six patients after discontinuing fluoride therapy.
• CT scan findings did not correlate with SNHL severity or reliably indicate fluoride therapy efficacy.

Conclusions:

• Fluoride therapy is effective in arresting the progression of sensorineural hearing loss in cochlear otosclerosis.
• The duration of fluoride treatment (1-4 years) did not substantially alter its effectiveness.
• Further research may be needed to establish optimal treatment protocols and reliable monitoring methods.