Microbial Adherence, Surface Roughness, Effectiveness and Impact on Patients Between Conventional and 3D Printed Twin Block Appliances

Launched by UNIVERSITY OF MALAYA · Apr 17, 2025

Keywords

ClinConnect Summary

This clinical trial is studying two types of Twin Block appliances, which are removable devices used to help correct the position of a child's lower jaw. The goal is to compare traditional Twin Block appliances with newer 3D-printed versions. Researchers want to see how much bacteria stick to each type, how rough the surfaces are (which could affect oral health), and how well each appliance improves jaw position and treatment outcomes. They will also gather feedback from participants about how these appliances affect their daily lives and comfort during treatment.

To participate in this study, children aged 10 to 14 who have specific dental conditions, like a certain type of bite problem (called Class II Division 1), may be eligible. Participants will be asked questions about their experiences to help understand how the type of appliance they use impacts their oral health and overall well-being. It’s important to note that some children, like those with certain medical conditions or previous orthodontic treatments, may not be eligible to join the trial.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • 1. Patients with Class II Division 1 incisor relationship
• • 2. Overjet of ≥ 7mm
• • 3. Age range of children: 10-12 years in females, 12-14 years in males
• • 4. All permanent incisors and molars erupted
• • 5. ICDAS ≥ score 3 and BPE ≥ 3
• • 6. Able to understand English or Bahasa Melayu
• Exclusion Criteria:
• • 1. Patients with craniofacial syndromes (example: cleft lip and palate)
• • 2. Patients with previous history of orthodontic treatment
• • 3. Patients with hyperdivergent facial type (MMPA \> 40º)
• • 4. Untreated gingival disease (e.g.: gingivitis, periodontitis)