NCT03780764

Changes in Pulpal Blood Flow Between Conventional and Self-ligating Fixed Orthodontic Brackets During Leveling and Alignment Stage

Changes in Pulpal Blood Flow of Teeth During Leveling and Alignment Stages of Orthodontic Treatment Using 2 Fixed Orthodontic Appliances

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 22 (actual)
• Sponsor: Jordan University of Science and Technology · Academic / Other
• Sex: All
• Age: 16 Years – 22 Years
• Healthy volunteers: Accepted

Summary

\- Evaluate and compare initial changes in PBF between conventional and self-ligating fixed orthodontic brackets during leveling and alignment stage using 0.016" Nickle titanium (NiTi) and 0.016X0.022" NiTi archwires at different time intervals (20min, 24h, 72h, 1 week and 1 month) of initial arch wire placement.

Detailed description

Objectives: to evaluate and compare the initial changes in pulpal blood flow (PBF) between conventional and self-ligating fixed orthodontic brackets during leveling and alignment stage. Materials and Methods: A total of 22 patients (16 females and 6 males) aged 19± 2.53 years who presented with mild lower arch crowding were selected to participate in the study. A split mouth study design was applied for each patient. Two different fixed appliance brackets were used in the lower arch (self-ligating brackets on one side and conventional brackets on the other side of the same patients). PBF was measured for the lower right and left sides using Laser Doppler Flowmetry at different time intervals (20min, 24h, 72h, 1 week and 1 month) after the fitting of 2 alignment archwires; 0.016" NiTi and 0.016X0.022" NiTi. A repeated measures analysis of variance test and a Bonferroni post-hoc comparison test were applied to detect differences in PBF between the 2 groups.

Conditions

• Orthodontic Appliances

Interventions

Type	Name	Description
OTHER	A Pre-adjusted edgewise brackets: 3M Gemini Unitek, 0.022" Roth prescription brackets	A pre-adjusted edgewise fixed appliance (3M Gemini Unitek, 0.022" Roth prescription brackets) on one side of lower arch. The standardized bonding technique was applied according to the manufacturer's instructions. Teeth alignment was initiated using round 0.016" NiTi arch wire until 0.016X0.022" NiTi was reached. The NiTi arch wires were placed into brackets slots and tied with elastomers (figure of 8).
OTHER	Self- ligating brackets: Unitek™ Gemini SL Self-Ligating Brackets, 0.022" Roth prescription brackets	Self-ligating brackets (Unitek™ Gemini SL Self-Ligating Brackets, 0.022" Roth prescription brackets) on the other side of lower arch. The standardized bonding technique was applied according to the manufacturer's instructions. Teeth alignment was initiated using round 0.016" NiTi arch wire until 0.016X0.022" NiTi was reached. The NiTi arch wires were placed into brackets slots and held in place by bracket's gate in the self-ligating brackets side.

Timeline

• Start date: 2017-06-01
• Primary completion: 2017-12-31
• Completion: 2018-05-01
• First posted: 2018-12-19
• Last updated: 2018-12-20

Locations

1 site across 1 country: Jordan