What Can Cause a Narrow Palate?
Along with a tongue-tie, several other factors can contribute to the development of a narrow palate.
Genetics and developmental issues for a fetus
A 2016 study with mice showed that abnormalities affecting the head and face account for developmental issues for a fetus, and the majority involve the palate or upper lip. Any condition that disrupts development of the palate in utero can lead to a narrow palate.
A number of genetic conditions can also lead to improper palate development. Ramon syndrome, pyknodysostosis [5], and Marfan syndrome [6] are three of many potential genetic causes.
Thumb sucking and pacifiers
Aggressive thumb sucking and pacifier use causes pressure in the mouth that can disrupt palate development and teeth alignment. Most of the time, children stop thumb sucking between the ages of 2 to 4 Source. Children who don’t stop sucking their thumbs by this age may be at an increased risk of improper mouth development.
Facial injury
A facial injury while the palate is still developing can disrupt proper bone growth. The University of Iowa says that injuries to the palate in children are relatively common. Most of the time, injuries heal without needing specific medical treatment.