Journal Article

Effect of two types of mandibular advancement splints on snoring and obstructive sleep apnoea

J Lamont, DR Baldwin, KD Hay and AG Veale

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 20, issue 3, pages 293-297
Published in print June 1998 | ISSN: 0141-5387
Published online June 1998 | e-ISSN: 1460-2210 | DOI: http://dx.doi.org/10.1093/ejo/20.3.293
Effect of two types of mandibular advancement splints on snoring and obstructive sleep apnoea

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Snoring and obstructive sleep apnoea (OSA) both seem at least to be associated with narrowing of the upper airway and sleep-induced loss of muscle-tone. Mandibular advancement splints (MAS) have been proposed as a relatively simple method to increase oro- and hypo-pharyngeal dimensions thereby increasing the size of the airway. However, data on their effectiveness are conflicting and there are no clear indications as to which design is most effective or when they should be used. The effects of two designs of splint (types A and B) have been evaluated in 14 and nine subjects, respectively, using the Epworth Sleepiness Score (ESS) and domiciliary sleep monitoring on separate nights. Both splints reduced the median ESS (type A from 12, to 4.5; P = 0.003, type B from 7 to 4; P = 0.005). The apnoea-hypopnoea index was not affected by type A, but was reduced from 7.1 to 0.8; P = 0.005 by type B splints. There was evidence of a small improvement in overnight oxygen saturation for type B splints (P = 0.02). The splints were well tolerated and continued to be used nightly by 18 subjects. Mandibular advancement splints may offer a simple and effective alternative for the treatment of snoring and mild OSA in selected patients. Splint design may have considerable bearing on efficacy.

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Subjects: Restorative Dentistry and Orthodontics

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