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Comparative Analysis of Space Maintenance Using Transpalatal Arch and Nance Button.

Andrea Martín-Vacas, Antonia M Caleya, Nuria E Gallardo

The Journal of Clinical Pediatric Dentistry

|May 5, 2021

Summary

The Transpalatal Arch (TPA) and Nance Button (NB) are used for space maintenance after early tooth loss. The Nance Button proved more effective than the TPA in preventing space loss, particularly after unilateral second primary molar loss.

Keywords:

Nance button pediatric dentistry space loss space maintainers transpalatal arch

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Area of Science:

Orthodontics
Pediatric Dentistry
Dental Materials Science

Background:

Premature loss of primary molars can lead to significant space loss in the dental arch.
Space maintainers are crucial for preventing subsequent orthodontic complications.
Transpalatal Arch (TPA) and Nance Button (NB) are common appliances for space maintenance in the upper arch.

Purpose of the Study:

To compare the efficacy of the Transpalatal Arch (TPA) and Nance Button (NB) in maintaining space.
To evaluate space loss following premature loss of upper primary molars using TPA and NB appliances.

Main Methods:

A study involving 54 subjects requiring space maintenance in the upper arch.
Subjects were divided into two groups: 23 receiving a TPA and 31 receiving an NB.
Radiographic measurements were taken initially and after appliance removal to quantify space loss.

Main Results:

The mean space loss was 1.336mm for the TPA group and 0.695mm for the NB group.
No statistically significant difference was found in total space loss between the groups (p > 0.05).
However, unilateral second primary molar loss showed significantly greater space loss with TPA compared to NB (p < 0.05).

Conclusions:

The Nance Button (NB) is more effective than the Transpalatal Arch (TPA) in preventing space loss.
Greater space loss occurred with TPA use, especially after unilateral second primary molar extraction.
The findings suggest NB is a superior choice for maintaining leeway space in specific clinical scenarios.