Andrei Bușmachiu, Oleg Solomon, Kamel Earar, Doriana Agop Forna, Cristina Iordache, Mihaela Jarovlea-Bejenari
Abstract
The shape of the dental arch influences both the alignment of the teeth and the aesthetics of the smile. This study analyzes the impact of different orthodontic arch shapes on the surface of the occlusion plane, using precise digital measurements. Passive arches have been found to generate a larger surface area of the occlusion plane, while active arches provide increased stimulation of dental arch expansion. The data obtained show that the ovoid arch proposed by Ricketts has the largest occlusion surface (1574.52 mm²), and the Bonwill-Hawley arch develops the smallest surface (1525.09 mm²), being indicated for dental extraction cases. The correlation between the patient’s facial type and the shape of the dental arch has been confirmed, providing valuable indications for the personalization of orthodontic treatment. The results of this study support the use of a protocol based on objective measurements, thus optimizing the choice of arch shapes according to the individual characteristics of the patient.
DOI : 10.62610/RJOR.2025.1.17.91
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