Dentoskeletal morphology in children with Deckbiss

Area of Science:

• Orthodontics
• Craniofacial Morphology
• Pediatric Dentistry

Background:

• Deckbiss malocclusion presents unique dentoskeletal characteristics.
• Understanding variations is crucial for effective orthodontic treatment planning.
• Previous research has not fully elucidated the specific morphological differences between Deckbiss subtypes.

Purpose of the Study:

• To compare the dentoskeletal morphology of Deckbiss malocclusions with Class I molar relationship (Class I/2) and Class II molar relationship (Class II/2).
• To identify consistent features and variations within Deckbiss malocclusions.
• To analyze the influence of age on dentoskeletal morphology in these groups.

Main Methods:

• Lateral cephalometric radiographs were used for analysis.
• 176 Class I/2 and 156 Class II/2 Deckbiss malocclusions were evaluated.
• Subjects were children aged 8–10 and 11–13 years.

Main Results:

• Short lower face and obtuse interincisal angles were consistent in both Deckbiss groups.
• Class II/2 samples showed more pronounced mandibular retrusion, skeletal Class II jaw base, reduced mandibular plane angle, hypodivergency, and upper incisor retroclination.
• Class I/2 samples exhibited more lower incisor retroclination, with age-related retrusion noted in younger subjects.

Conclusions:

• Deckbiss malocclusion exhibits untypical dentoskeletal morphology beyond a short lower face and obtuse interincisal angle.
• Distinct morphological differences exist between Class I/2 and Class II/2 Deckbiss malocclusions.
• Age influences dentoskeletal morphology, particularly in the Class I/2 group, with retrusion more common in younger children.