Does hyperbaric oxygen therapy pressure reduce mechanical stability of implants?

Area of Science:

• Biomaterials Science
• Dental Implantology
• Hyperbaric Medicine

Background:

• Hyperbaric oxygen therapy (HBOT) is recognized for enhancing bone healing, particularly in conditions like diabetes mellitus.
• However, pressure variations during HBOT can lead to dental barotrauma.
• Understanding the impact of HBOT on dental implant stability is crucial for patient safety and treatment efficacy.

Purpose of the Study:

• To investigate the mechanical stability of dental implants subjected to varying cycles of hyperbaric oxygen therapy (HBOT).
• To assess potential risks of dental barotrauma on implant osseointegration and stability under simulated HBOT conditions.

Main Methods:

• Thirty-five dental implants were placed in bone blocks and divided into five groups: control, and groups exposed to 1, 3, 5, or 7 cycles of HBOT.
• Each HBOT cycle involved exposure to 2.4 bar pressure with 100% oxygen.
• Implant stability was quantitatively measured using resonance frequency analysis (RFA) and a removal torque (RT) meter device.

Main Results:

• A statistically significant decrease in implant stability, measured by RFA, was observed in groups exposed to 5 and 7 HBOT cycles compared to the control and 1, 3 HBOT groups (p < 0.001).
• No significant difference in RFA values was found between the 5 and 7 HBOT cycle groups.
• While a slight decrease, the reduction in implant stability was statistically significant for implants exposed to 5 and 7 HBOT cycles.

Conclusions:

• Exposure to 5 and 7 cycles of hyperbaric oxygen therapy (HBOT) at 2.4 bar can lead to a statistically significant, albeit slight, reduction in dental implant mechanical stability.
• These findings suggest a potential risk associated with higher HBOT exposure levels on implant osseointegration.
• Further research is warranted to establish safe HBOT protocols for patients with dental implants.