# The impact of adenoid hypertrophy across pediatric age groups on maxillomandibular development and position

## TL;DR

This study shows that adenoid hypertrophy in children affects facial development differently depending on their age, leading to issues like jaw misalignment and tooth protrusion.

## Contribution

The study reveals age-specific craniofacial changes caused by adenoid hypertrophy in children across different dentition stages.

## Key findings

- In children aged 5–8 years, adenoid hypertrophy is linked to a lower SNB angle and higher NA-Apo angle.
- By age 8–11 years, adenoid hypertrophy causes reduced SNA, SNB, and NPo–FH angles, along with increased ANB, NA-Apo, and overjet.

## Abstract

Although adenoid hypertrophy (AH) is associated with malocclusion, its age-specific impact on craniofacial development across different dentition stages remains unclear. This study aimed to assess AH-related craniofacial changes across distinct phases of dental development.

This retrospective study analyzed 180 children divided into three age groups: 3–5, 5–8, and 8–11 years. Lateral cephalometric radiographs were used to evaluate sagittal skeletal relationships (SNA, SNB, ANB), dentoalveolar position (NA-Apo), occlusal plane inclination (NPo–FH), jaw lengths (ANS-Ptm, Co-Gn), and overjet. Comparisons were made between the AH and control groups within each age cohort.

In the 3–5 year group, no significant craniofacial differences were found between AH and control subjects. Between 5–8 years, AH was linked to a significantly lower SNB angle and higher NA-Apo angle (p < 0.05). By 8–11 years, AH patients showed significantly reduced SNA, SNB, and NPo–FH angles, along with increased ANB, NA-Apo, and overjet values compared to controls (p < 0.05).

AH was associated with age-dependent craniofacial changes—such as mandibular retrusion, dental protrusion, posterior occlusal tilt, and increased overjet—without altering jaw length. Early diagnosis and timely intervention during key growth stages are crucial to prevent long-term facial abnormalities. Given the retrospective, 2D cephalometric design, causality could not be inferred, and longitudinal or treatment effects could not be assessed.