Accuracy in Mixed Dentition Arch Length Discrepancy Prediction Methods in Surabayan Children

Area of Science:

• Dentistry
• Orthodontics
• Pediatric Dentistry

Background:

• Accurate space evaluation in malocclusion is essential for effective orthodontic interceptive treatment.
• Arch length discrepancy (ALD) analysis is a key tool during the mixed dentition (MD) and growth and development stages (GDS).

Purpose of the Study:

• To analyze ALD using Sitepu, Moyers, and Tanaka-Johnston methods.
• To compare ALD measurement techniques (brass wire and segmentation) in Javanese children with Angle's Class I malocclusion during MD and GDS.

Main Methods:

• Sixty study models of Javanese children in MD and GDS were analyzed.
• Cervical vertebral maturation stage determined GDS, and Steiner's analysis assessed skeletal malocclusion.
• ALD analysis employed Moyers, Sitepu, and Tanaka-Johnston methods, alongside brass wire and segmentation techniques.

Main Results:

• Statistically significant differences in ALD were found for the maxillary arch (p < 0.05), but not the mandibular arch (p > 0.05).
• Significant differences existed between Moyers and Sitepu methods in the maxillary arch (p < 0.05).
• A significant difference was observed between Moyers segmented and brass wire methods in the maxilla (p < 0.05).

Conclusions:

• The Moyers, Sitepu, and Tanaka-Johnston methods show statistically significant differences in maxillary arch length discrepancy during mixed dentition and growth stages.
• No significant differences were found in mandibular arch length discrepancy among these methods.
• The choice of ALD analysis method can impact treatment planning for growing orthodontic patients.