Produção Nacional
Revisado por pares
Tooth size discrepancy: Is the E space similar to the leeway space?
2013; Elsevier BV; Volume: 2; Issue: 2 Linguagem: Inglês
10.1016/j.ejwf.2013.03.001
ISSN2212-4438
AutoresLuciana Quintanilha Pires Fernandes, Rhita Cristina Cunha Almeida, Barbara N.G. de Andrade, Felipe de Assis Ribeiro Carvalho, Marco Antônio de Oliveira Almeida, Flávia Artese,
Tópico(s)Temporomandibular Joint Disorders
ResumoBackground The space for perfect positioning of permanent teeth is usually critical in both dental arches, particularly in the lower one. The use of the leeway space allows better management of space deficiency. Many orthodontists use the E space, instead of the leeway space, because it is easier to measure and because they believe that the two measurements will be similar. Objective The purpose of this study was to evaluate the veracity of this hypothesis. Methods In all, 104 plaster casts of the lower jaw of 52 persons in the mixed dentition and in the permanent dentition were used. The leeway space and the E space were calculated by the same examiner using a digital caliper with accuracy of 0.01 mm. The method error demonstrated an excellent correlation. Results The D’Agostino test demonstrated that all variables presented a normal distribution, and the paired t test showed significant difference (p < 0.0001) between the mean values of all measurements, with higher values for the E space. The mean difference found was 0.45 mm for each side, which can be considered clinically relevant. Conclusions The results show that the E space predicts larger space than the leeway space, and this difference was approximately 1 mm. Therefore, clinicians should be careful not to overestimate the space available.
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