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Published on: February 23, 2024
Comparison of 2 early treatment protocols for open-bite malocclusions
Paola Cozza1, Tiziano Baccetti, Lorenzo Franchi
1Department of Orthodontics, University of Rome Tor Vergata, Rome, Italy.
Summary
The quad-helix/crib (Q-H/C) appliance significantly improves open-bite malocclusions more than the open-bite bionator (OBB). Q-H/C therapy enhances overbite and maxillary incisor positioning.
Area of Science:
- Orthodontics
- Craniofacial Development
Background:
- Open-bite malocclusions present complex treatment challenges.
- Comparing orthodontic appliances is crucial for effective treatment planning.
Purpose of the Study:
- To compare the efficacy of the quad-helix/crib (Q-H/C) appliance versus the open-bite bionator (OBB) in treating open-bite malocclusions.
Main Methods:
- A comparative study involving 21 subjects (Q-H/C) and 20 subjects (OBB).
- Lateral cephalograms were analyzed before (T1) and after treatment (T2).
- Nonparametric Mann-Whitney U test was used for statistical comparison.
Main Results:
- The Q-H/C appliance demonstrated a significant improvement in overbite (+1.9 mm) compared to the OBB.
- Q-H/C therapy resulted in maxillary incisor extrusion (+1.5 mm) and palatal inclination (+2.9 degrees).
Conclusions:
- The quad-helix/crib (Q-H/C) appliance is more effective than the open-bite bionator (OBB) for correcting skeletal open-bite malocclusions.
- Q-H/C appliance therapy positively influences overbite and maxillary incisor position.