Effects of open mouth and rubber dam on upper airway patency and breathing

Kazuhiro Iwatani, Koichiro Matsuo, Soichiro Kawase, Nina Wakimoto, Akira Taguchi, Tadashi Ogasawara

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Objectives: Rubber dams increase the quality and safety of dental treatment. However, the condition of a rubber dam over an open mouth may also obstruct the route for respiration. We tested whether an open mouth with or without a rubber dam would affect upper airway patency and breathing pattern. Materials and methods: Twenty young healthy volunteers were imaged with a magnetic resonance (MR) system under three conditions: mouth closed, mouth open, and rubber dam with mouth open. Respiration was concurrently monitored with plethysmography. MRI slices of the upper airway were obtained at 5-mm thicknesses, and the size of the cross-sectional area of the upper airway was measured by image analysis software. Respiratory cycle duration and tidal volume were also measured with digital signal analysis software. Results: The volume of the upper airway became significantly decreased with the mouth open. Analysis of each cross-sectional area of the upper airway revealed that while the oropharyngeal area was significantly narrower with an open mouth, the retropalatal and hypopharyngeal areas were not affected. Placing a rubber dam had no additional influence on upper airway patency but was seen to significantly shorten mean respiratory duration and decrease tidal volume. Conclusions: Open mouth position plays the largest role in decreased upper airway patency, and open mouth position with a rubber dam may further disrupt breathing pattern. Clinical relevance: Breathing pattern may become deteriorated by airway obstruction during dental treatments requiring a rubber dam.

Original languageEnglish
Pages (from-to)1295-1299
Number of pages5
JournalClinical Oral Investigations
Volume17
Issue number5
DOIs
Publication statusPublished - 01-06-2013

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Rubber Dams
Mouth
Respiration
Tidal Volume
Tooth
Software
Plethysmography
Airway Obstruction
Healthy Volunteers
Magnetic Resonance Spectroscopy
Cross-Sectional Studies

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

Cite this

Iwatani, Kazuhiro ; Matsuo, Koichiro ; Kawase, Soichiro ; Wakimoto, Nina ; Taguchi, Akira ; Ogasawara, Tadashi. / Effects of open mouth and rubber dam on upper airway patency and breathing. In: Clinical Oral Investigations. 2013 ; Vol. 17, No. 5. pp. 1295-1299.
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Iwatani, K, Matsuo, K, Kawase, S, Wakimoto, N, Taguchi, A & Ogasawara, T 2013, 'Effects of open mouth and rubber dam on upper airway patency and breathing', Clinical Oral Investigations, vol. 17, no. 5, pp. 1295-1299. https://doi.org/10.1007/s00784-012-0810-5

Effects of open mouth and rubber dam on upper airway patency and breathing. / Iwatani, Kazuhiro; Matsuo, Koichiro; Kawase, Soichiro; Wakimoto, Nina; Taguchi, Akira; Ogasawara, Tadashi.

In: Clinical Oral Investigations, Vol. 17, No. 5, 01.06.2013, p. 1295-1299.

Research output: Contribution to journalArticle

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AU - Iwatani, Kazuhiro

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AU - Kawase, Soichiro

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AU - Taguchi, Akira

AU - Ogasawara, Tadashi

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