Effect of rapid maxillary expansion on the dimension of the nasal cavity and on facial morphology assessed by acoustic rhinometry and rhinomanometry

Itikawa, Carla E.; Valera, Fabiana Cardoso Pereira; Matsumoto, Mírian Aiko Nakane; Lima, Wilma Terezinha Anselmo

doi:10.1590/s2176-94512012000400024

Cited by 10 publications

(23 citation statements)

References 14 publications

(10 reference statements)

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“…14 On the other hand, Langer et al 34 concluded that RME did not influence nasal resistance in their long-term evaluation. Itikawa et al 35 and Matsumoto et al 36 examined the effects of RME on nasal cavity dimensions of young children and observed a significant increase in nasal transverse bony width. However, no difference in nasal volume was detected as a result of mucosal compensation.…”

Section: Discussionmentioning

confidence: 99%

Short-term and long-term effects of rapid maxillary expansion on the nasal soft and hard tissue:

Truong¹,

Jeon²,

Sripinun³

et al. 2020

The Angle Orthodontist

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Objectives To evaluate nasal soft and hard tissue changes immediately post–rapid maxillary expansion (RME) and to assess the stability of these changes using cone beam computed tomography (CBCT). Materials and Methods A total of 35 treatment group (TG) patients (18 girls, 17 boys; 9.39 ± 1.4) had a pre-RME CBCT and a post-RME CBCT approximately 66 days after expansion, and 25 patients had a follow-up CBCT 2.84 years later. A total of 28 control group (CG; no RME) patients (16 girls, 12 boys; 8.81 ± 1.6) had an initial CBCT and a CBCT an average of 2.25 years later. Soft and hard tissue nasal landmarks were measured in transverse, sagittal, and coronal planes of space on CBCT scans. Differences within the same group were evaluated by paired t-tests or Wilcoxon signed-rank tests. Long-term comparisons between TG and CG were evaluated by independent-sample t-tests or Wilcoxon rank-sum tests. Results Immediately post-RME, there were statistically significant mean increases of 1.6 mm of alar base width, 1.77 mm of pyriform height, and 3.57 mm of pyriform width (P < .05). CG showed the significant increases over 2.25 years (P < .001). Compared with CG, the long-term evaluation of TG demonstrated only pyriform height and pyriform width showed a statistically significant difference (P < .01). Conclusions Although RME produced some significant increase on the nasal soft tissue immediately after expansion, it regressed to the mean of normal growth and development over time. However, long-term evaluation of TG compared with CG showed only pyriform height and pyriform width to be affected by RME.

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Section: Discussionmentioning

confidence: 99%

Short-term and long-term effects of rapid maxillary expansion on the nasal soft and hard tissue:

Truong¹,

Jeon²,

Sripinun³

et al. 2020

The Angle Orthodontist

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“…Table 2 presents recent longitudinal studies on the effect of maxillary expansion on nasal respiration. [63][64][65][66][67][68] While some studies have shown that RME improves nasal cavity dimensions and reduces nasal resistance, 63,[67][68][69] they generally have a short-term follow-up (≤1 year), a small sample size and lack of a control group. 70,71 An early highly-cited study by Hershey et al reported that RME reduced nasal resistance by 45% in 17 children aged between 11 and 14 years over a 3-month period.…”

Section: Does Nasorespiratory Obstruction Alter Dentofacial Growth?mentioning

confidence: 99%

“…Most studies have relatively sample sizes that carry a low statistical power and raise questions about data representativeness (of the overall population). 17,20,37,49,52,53,[63][64][65][66][67][68][69] The lack of an adequate control makes it difficult to measure the effect of any intervention against normal growth. 28,[64][65][66][67]69 Even studies with control groups frequently lack a properly-matched cohort, such as untreated patients with large adenoids when investigating adenotonsillectomy.…”

Section: Risk Of Biasmentioning

confidence: 99%

“…17,20,37,49,52,53,[63][64][65][66][67][68][69] The lack of an adequate control makes it difficult to measure the effect of any intervention against normal growth. 28,[64][65][66][67]69 Even studies with control groups frequently lack a properly-matched cohort, such as untreated patients with large adenoids when investigating adenotonsillectomy. 31,32,48,49,[51][52][53]63,68 The follow-up periods are often short (≤1 year) and do not account for possible relapse.…”

Section: Risk Of Biasmentioning

confidence: 99%

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Opening up on airways: the purported effect of nasorespiratory obstruction on dentofacial growth

Cheung

Dreyer

Ranjitkar

2021

Australian Dental Journal

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Nasorespiratory obstruction has been purported to influence dentofacial growth adversely. This has sparked considerable debate for decades with a resurgence in interest in 'airway friendly orthodontics' among both general and specialist dental practitioners. This critical review aims to evaluate the current literature relating to two questions: does nasorespiratory obstruction alter dentofacial growth, and does early intervention targeted at alleviating nasorespiratory obstruction improve dentofacial growth? The strength of association between nasorespiratory obstruction, mouth breathing and a long face is weak. The common methodological flaws in research include unblinded and cross-sectional study designs, a lack of adequate controls, inadequate follow-up, subjective assessments and inadequate statistical power. Vertical dentofacial growth has a strong genetic influence, which implies a relatively minor contribution of environmental factors including airway obstruction. The current evidence does not support recommending procedures, such as adenotonsillectomy and maxillary expansion, with the singular aim of negating a hyperdivergent (vertical) dentofacial growth pattern. In light of low-quality evidence, both the World Health Organization guidelines and ethical principles dictate that greater emphasis is placed on avoiding harm and wastage of resources over alternative options. These findings call for quality improvement in undergraduate and postgraduate curricula and continuing professional development for health professionals.

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“…As for surgical approaches, research has demonstrated the benefits of adenotonsillectomy for 18 children with adenotonsillar hypertrophy in order to allow the return of nasal breathing, benefit to the dental occlusion, favoring the adequate morphofunctional development of the face 44 . Another article analyzed the effect of rapid maxillary expansion surgery in 29 children and it was found that this procedure, by itself, is not justified to induce a nasal breathing pattern in oral breathers 45 .…”

Section: Treatmentsmentioning

confidence: 99%

The Mouth Breathing Syndrome: prevalence, causes, consequences and treatments. A Literature Review

et al. 2014

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The Mouth Breathing Syndrome (MBS) is characterized by pattern of mouth breathing (MB) or mixed breathing chronic caused by nasal obstruction or inflammatory factors, which may be present in half of the school children. The permanence of the framework affects the individual globally, and especially their stomatognathic functions, posture and quality of life, requiring multidisciplinary care. This paper aims to provide an overview of recent scientific production on the prevalence, etiologies, sequelae and treatments in MBS. The method used was a literature review through a research in the databases of LILACS, Medline and SciELO, using defined inclusion criteria. The 45 articles chosen were distributed and analyzed in groups: prevalence (1), causes (9), consequences (28) and treatments (7). This review highlighted the lack of studies on the prevalence of MB, specially in adults, besides the preponderance of studies on the consequences rather than on the analysis of its causes and treatments. It also showed the need to sensitize health professionals to the recognition of MBS, as long as a global and early intervention with these patients.A Síndrome de Respiração Bucal, (SRB) é caracterizada por um padrão de respiração bucal (RB) ou respiração crônica mista causada por obstrução nasal ou fatores inflamatórios, que podem estar presentes em metade das crianças em idade escolar. A permanência do quadro afeta o indivíduo como um todo, especialmente as suas funções estomatognáticas, a postura e a qualidade de vida, necessitando de atendimento multidisciplinar. Este trabalho tem como objetivo fornecer uma visão geral da produção científica recente sobre a prevalência, etiologia, sequelas e tratamentos em SRB. O método utilizado foi uma revisão da literatura através de uma pesquisa nas bases de dados Lilacs, Medline e SciELO, utilizando critérios de inclusão definidos. Os The mouth breathing syndrome: prevalence, causes, consequences and treatment Martins DLL, et al J Surg Cl Res -Vol. 5 (1) 2014:47-55 4845 artigos selecionados foram distribuídos e analisados em grupos: prevalência (1), etiologia (9), conseqüências (28) e tratamentos (7). Esta avaliação destacou a falta de estudos sobre a prevalência da RB, especialmente em adultos, além da predominância de estudos sobre as consequências e não na análise de suas causas e tratamentos. A revisão também mostrou a necessidade de sensibilizar os profissionais de saúde para o reconhecimento da SRB, para uma intervenção global e precoce com esses pacientes.Descritores: Síndrome de respiração bucal. Respiração oral. Prevalência. Etiologia. Sequelas. Tratamento.The mouth breathing syndrome: prevalence, causes, consequences and treatment Martins DLL, et al

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Effect of rapid maxillary expansion on the dimension of the nasal cavity and on facial morphology assessed by acoustic rhinometry and rhinomanometry

Cited by 10 publications

References 14 publications

Short-term and long-term effects of rapid maxillary expansion on the nasal soft and hard tissue:

Short-term and long-term effects of rapid maxillary expansion on the nasal soft and hard tissue:

Opening up on airways: the purported effect of nasorespiratory obstruction on dentofacial growth

The Mouth Breathing Syndrome: prevalence, causes, consequences and treatments. A Literature Review

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