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http://dx.doi.org/10.17245/jdapm.2021.21.6.527

Success rate of nitrous oxide-oxygen procedural sedation in dental patients: systematic review and meta-analysis  

Rossit, Marco (Department of Geriatric Dentistry, Oral Medicine, and Care for Patients with Special Needs, Universitat Internacional de Catalunya (UIC))
Gil-Manich, Victor (Department of Geriatric Dentistry, Oral Medicine, and Care for Patients with Special Needs, Universitat Internacional de Catalunya (UIC))
Ribera-Uribe, Jose Manuel (Department of Geriatric Dentistry, Oral Medicine, and Care for Patients with Special Needs, Universitat Internacional de Catalunya (UIC))
Publication Information
Journal of Dental Anesthesia and Pain Medicine / v.21, no.6, 2021 , pp. 527-545 More about this Journal
Abstract
The aim of this systematic review was to determine the success rate of nitrous oxide-oxygen procedural sedation (NOIS) in dentistry. A systematic digital search was conducted for publications or reports of randomized controlled trials evaluating the clinical performance of NOIS. Abstracts of research papers were screened for suitability, and full-text articles were obtained for those who met the inclusion and exclusion criteria accordingly. The quality of the studies was assessed using the revised Cochrane risk-of-bias tool (RoB 2). A total of 19 articles (eight randomized clinical trials with parallel intervention groups and 11 crossover trials), published between May 1988 and August 2019, were finally selected for this review. The studies followed 1293 patients reporting NOIS success rates, with a cumulative mean value of 94.9% (95% CI: 88.8-98.9%). Thirteen trials were conducted on pediatric populations (1098 patients), and the remaining six were conducted on adults (195 patients), with cumulative efficacy rates of 91.9% (95% CI: 82.5-98.1%) and 99.9% (95% CI: 97.7-100.0%), respectively. The difference was statistically significant (P = 0.002). Completion of treatment and Section IV of the Houpt scale were the most used efficacy criteria. Within the limitations of this systematic review, the present study provides important information on the efficacy rate of NOIS. However, further well-designed and well-documented clinical trials are required and there is a need to develop guidelines for standardization of criteria and definition of success in procedural sedation. Currently, completion of treatment is the most used parameter in clinical practice, though many others also do exist at the same time. To maximize NOIS efficacy, clinicians should strictly consider appropriate indications for the procedure.
Keywords
Conscious Sedation; Dental Care; Nitrous Oxide; Procedural Sedation;
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