Related Experiment Video
Updated: May 28, 2026

Midface Hypoplasia and Cranial Base Morphology in Syndromic Craniosynostosis: A Comparative Analysis Study Using a Predictive Regression Model
Published on: November 4, 2025
Craniofacial growth variations in nasal-breathing, oral-breathing, and tracheotomized children
Silvia Fuerte Bakor1, Donald H Enlow, Paulo Pontes
1Department of Otorhinolaryngology Head and Neck Surgery, Universidade Federal de São Paulo, São Paulo, Brazil. sfb@uol.com.br
Insights
Childhood tracheotomies may lead to abnormal facial growth, similar to oral breathing patterns. This study compared craniofacial development in nasal, oral, and tracheotomized children, finding significant differences in muscle activity and facial measurements.
Area of Science:
- Craniofacial development
- Pediatric respiratory influences
Background:
- Childhood oral breathing can cause muscular imbalances and facial deformities.
- Facial growth alterations in tracheotomized children are not well-documented.
- Understanding breathing mechanism impacts on facial development is crucial.
Purpose of the Study:
- To evaluate craniofacial development in children based on breathing mechanisms.
- To compare nasal, oral, and tracheotomized breathing patterns.
- To identify potential facial growth consequences of tracheotomies.
Main Methods:
- Electromyography of masseter and suprahyoid muscles.
- Measurement of facial, maxillary, and mandibular widths.
- Assessment of nasion-sella-gnathion angle and facial index.
Main Results:
- Tracheotomized children showed greater masseter than suprahyoid muscle activity, similar to nasal breathers.
- Oral breathers exhibited reduced muscle activity and facial width measurements.
- Tracheotomized children displayed increased suprahyoid activity during occlusion, akin to oral breathers.
Conclusions:
- Childhood tracheotomy may negatively impact craniofacial development.
- Facial growth patterns in tracheotomized children resemble those of oral breathers.
- Abnormal facial growth variations can result from childhood tracheotomies.
Introduction:
Childhood oral breathing can alter muscular balance and lead to facial deformities. No articles in the literature have reported on the alteration of facial growth patterns in patients who have received tracheotomies. The purpose of this study was to evaluate craniofacial developmental consequences originating from variations in breathing mechanisms in children who are nasal breathers or oral breathers, and those who have been tracheotomized.
Methods:
The sample was divided into 3 groups of 10 each. The nasal group had a mean age of 13.9 years, the oral group had a mean age of 12.7 years, and the tracheotomy group had a mean age of 12.8 years. The masseter and suprahyoid muscles were evaluated with electromyography. The following measurements were made: facial, maxillary, and mandibular widths; nasion-sella-gnathion angle; and facial index.
Results:
The tracheotomized group was similar to the nasal group for greater activity of the masseter muscles than of the suprahyoid muscles during mastication, as well as in the measurements of facial, maxillary, and mandibular widths. The oral group showed reductions in each category. The tracheotomized group was similar to the oral group during maximum dental occlusion for significantly higher activity of the suprahyoid muscles compared with the masseter muscles, with reductions in vertical values.
Conclusions:
A childhood tracheotomy might affect facial development in a way comparable with that of oral breathers, including abnormal facial growth variations.
Related Concept Videos
Trachea
Anatomical Features:
Location: About half of the trachea is situated in the neck, anterior to the esophagus, and extends from the larynx (at the level of the...
Physical Assessment of the Respiratory Tract II: Inspection
Chest Configuration
The chest configuration can...
Anatomy of Respiratory System I: Upper Respiratory Tract
Nose and nasal cavity
The nose and nasal cavity represent the main external openings of the respiratory tract.
Assessment of Airway, Skin Color, and Use of Accessory Muscles
Introduction
The initial evaluation of a patient's respiratory system...
Physical Assessment of the Respiratory Tract I: Health History
Subjective Data
Subjective data provides vital information about the patient's health history and symptoms. This data is typically collected through interviews in which patients describe their experiences, symptoms, and concerns.
Health history and key...
Oxygen Delivering System III: Tracheostomy and T-piece
Tracheostomy
A tracheostomy is a surgically created opening (stoma) in the anterior part of the trachea. It is used to establish a patient airway, bypass an upper airway obstruction, simplify the removal of secretions, permit long-term...

