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Updated: Jul 31, 2026

Topical Airway Anesthesia for Awake-endoscopic Intubation Using the Spray-as-you-go Technique with High Oxygen Flow
Published on: January 13, 2017
[Inhalation sedation with nitrous oxide in dental extraction]
Nitrous oxide inhalation sedation significantly reduces pain and anxiety during dental extractions compared to local anesthesia alone. Most patients preferred this method for its calming and memory-impairing effects.
Area of Science:
- Dentistry
- Anesthesiology
- Pharmacology
Background:
- Dental extractions can cause significant patient anxiety and discomfort.
- Conscious sedation techniques are employed to improve patient experience during dental procedures.
Purpose of the Study:
- To evaluate the benefits of nitrous oxide (N2O) inhalation sedation during dental extractions.
- To compare N2O sedation with local anesthesia alone and assess the impact of estazolam.
Main Methods:
- 112 patients were randomized into four groups receiving varying concentrations of N2O, with or without estazolam.
- N2O was administered as conscious sedation adjunct to local anesthesia.
- A control group (53 patients) received only local anesthesia.
Main Results:
- The N2O group showed significantly lower postoperative pain scores (MDAS) compared to the control group (P < 0.01).
- Patients receiving N2O experienced sedation and partial amnesia.
- 86.62% of patients preferred N2O inhalation sedation.
- No significant differences in anxiolytic, sedative, or amnestic effects were found among the N2O groups; estazolam showed no additional benefit.
Conclusions:
- Inhalation sedation with nitrous oxide is effective for dental extractions, providing anxiolysis, sedation, and amnesia.
- N2O offers a preferred method for managing patient comfort during dental procedures.
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