A Review of the Effects of Expansion of the Nasal Base on Nasal Airflow and Resistance

Neeley, Wendell W.; Edgin, Wendell A.; Gonzales, David A.

doi:10.1016/j.joms.2006.06.295

Cited by 31 publications

(11 citation statements)

References 63 publications

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“…In the present study, MARPE significantly decreased the total resistance in UA during the entire respiratory cycle ( Table 7 ). This finding is in accordance with that from a previous review, 27 which suggested that expansion of the NC floor can benefit patients with a constricted maxillary arch and nasal airflow problem.…”

Section: Discussionsupporting

confidence: 93%

Investigation of the effects of miniscrew-assisted rapid palatal expansion on airflow in the upper airway of an adult patient with obstructive sleep apnea syndrome using computational fluid-structure interaction analysis

et al. 2017

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ObjectiveThe objective of this study was to investigate the effects of miniscrew-assisted rapid palatal expansion (MARPE) on changes in airflow in the upper airway (UA) of an adult patient with obstructive sleep apnea syndrome (OSAS) using computational fluid-structure interaction analysis.MethodsThree-dimensional UA models fabricated from cone beam computed tomography images obtained before (T0) and after (T1) MARPE in an adult patient with OSAS were used for computational fluid dynamics with fluid-structure interaction analysis. Seven and nine cross-sectional planes (interplane distance of 10 mm) in the nasal cavity (NC) and pharynx, respectively, were set along UA. Changes in the cross-sectional area and changes in airflow velocity and pressure, node displacement, and total resistance at maximum inspiration (MI), rest, and maximum expiration (ME) were investigated at each plane after MARPE.ResultsThe cross-sectional areas at most planes in NC and the upper half of the pharynx were significantly increased at T1. Moreover, airflow velocity decreased in the anterior NC at MI and ME and in the nasopharynx and oropharynx at MI. The decrease in velocity was greater in NC than in the pharynx. The airflow pressure in the anterior NC and entire pharynx exhibited a decrease at T1. The amount of node displacement in NC and the pharynx was insignificant at both T0 and T1. Absolute values for the total resistance at MI, rest, and ME were lower at T1 than at T0.ConclusionsMARPE improves airflow and decreases resistance in UA; therefore, it may be an effective treatment modality for adult patients with moderate OSAS.

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Section: Discussionsupporting

confidence: 93%

Investigation of the effects of miniscrew-assisted rapid palatal expansion on airflow in the upper airway of an adult patient with obstructive sleep apnea syndrome using computational fluid-structure interaction analysis

et al. 2017

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“…Focusing on breathing function, it can be hypothesised that as ME creates additional space in the oral cavity, the tongue may be spontaneously positioning itself closer to the roof of the palate implementing the nasal breathing instead of the oral breathing . The AR is a less invasive technique, which uses a reflected sound impulse to measure the cross‐sectional area of the nasal cavity as a function of distance into the nasal cavity . All the SRs assessing the functional outcomes related to nasal breathing reported positive findings, with a reduction in the nasal resistance and an improvement of the minimum cross‐sectional area, especially after decongestant use .…”

Section: Discussionmentioning

confidence: 99%

Effects of maxillary expansion on the upper airways: Evidence from systematic reviews and meta‐analyses

Bucci

Montanaro

Rongo

et al. 2019

J of Oral Rehabilitation

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Summary Background Constricted maxilla is frequently associated with reduced nasal airway dimensions. Wheatear skeletal maxillary expansion (ME) is effective on the dimension of the upper airways is still a debated issue. Objectives This overview aimed to report the evidence provided by systematic reviews (SRs) on the effect of ME on the upper airways and to assess the methodological quality of the included SRs. Methods Six electronic databases have been explored up to November 2017. After title and abstract screening, SRs addressing the effects of fixed palatal expanders on the dimension and function of the nasal airways were included. The methodological quality of the included SRs was assessed using the updated version of A Measurement Tool to Assess Systematic Review (AMSTAR‐2). Results Eight SRs were included. The methodological quality of most of the included SRs ranged between low and critically low. One SR was rated of high quality. A significant increase in nasal linear dimensions was reported both in the short and long term, but supported by low‐/critically low‐quality SRs. The significant increase in nasal cavity volume was the only outcome supported by a high‐quality SR Controversial results were found with regards to nasal function. Conclusion Whenever a constricted maxilla is present general dentists, paediatricians and ENTs should be familiar with the potential improvement provided by ME. However, due to the low/critically low quality of SRs supporting these results, ME cannot be indicated only for upper airways enhancement, but should be supported by an orthodontic indication.

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“…The functional benefit of such an increase in volume has not been fully determined . Magnusson et al .…”

Section: Discussionmentioning

confidence: 99%

Volumetric changes of the nose and nasal airway 2 years after tooth‐borne and bone‐borne surgically assisted rapid maxillary expansion

Nada

Loon

Schols

et al. 2013

European J Oral Sciences

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This study aimed to assess the effects of bone-borne and tooth-borne surgically assisted rapid maxillary expansion on the volumes of the nose and nasal airway 2 yr after maxillary expansion. This prospective cohort study included 32 patients with transverse maxillary hypoplasia. Expansion was performed with a tooth-borne distractor (Hyrax) in 19 patients and with a bone-borne distractor [transpalatal distractor (TPD)] in the remaining 13. Cone beam computed tomography scans and three-dimensional (3D) photographs of the face were acquired before treatment and 22 ± 7 months later, and were used to evaluate the volumes of the nose and nasal airway. Nasal volume increased by 1.01 ± 1.6% in the Hyrax group and by 2.39 ± 2.4% in the TPD group. Nasal airway volume increased by 9.7 ± 5.6% in the Hyrax group and by 12.9 ± 12.7% in the TPD group. Changes in the nasal volume and in the nasal airway volume between the pre- and post-treatment measurements were statistically significant, whereas differences between the treatment groups were not; 22 months after surgically assisted rapid maxillary expansion, the increases in the nasal volume and in the nasal airway volume were comparable between tooth-borne and bone-borne devices.

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A Review of the Effects of Expansion of the Nasal Base on Nasal Airflow and Resistance

Cited by 31 publications

References 63 publications

Investigation of the effects of miniscrew-assisted rapid palatal expansion on airflow in the upper airway of an adult patient with obstructive sleep apnea syndrome using computational fluid-structure interaction analysis

Investigation of the effects of miniscrew-assisted rapid palatal expansion on airflow in the upper airway of an adult patient with obstructive sleep apnea syndrome using computational fluid-structure interaction analysis

Effects of maxillary expansion on the upper airways: Evidence from systematic reviews and meta‐analyses

Volumetric changes of the nose and nasal airway 2 years after tooth‐borne and bone‐borne surgically assisted rapid maxillary expansion

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