Fluctuating arch symmetry: a comparison of two methods of assessment - applicability and efficiency.
Dental Press J Orthod
; 29(4): e2423265, 2024.
Article
em En
| MEDLINE
| ID: mdl-39230109
ABSTRACT
INTRODUCTION:
Symmetry is balance, some correspondence in the size, form, and arrangements of parts on opposite sides of a plane, line, or point. The opposite of this concept is asymmetry, or imbalance.OBJECTIVE:
This retrospective study compared two methods for assessing arch symmetry with linear measurements based on triangles, to determine their applicability and efficiency.METHODS:
Two groups were enrolled children (n=20) and adults (n=20), and the arch symmetry was assessed from linear measurements. Method 1 the incisor-canine (INC), canine-molar (CM), and incisor-molar (INM) distances (paired t-test and Pearson correlation). Method 2 a mathematical equation between the cusps measurements of the canines and the distobuccal of the first molars leading to result 1 (t-test for one sample and bootstrapping analysis). Dental casts were digitized and analyzed using a software program. The Bland-Altman test compared the methods (α=0.05).RESULTS:
The Bland-Altman test revealed concordance between the methods; however, separately the results were different In method 1, the mandibular arch did not demonstrate correlation (children, INC r=0.33; CM r=0.45; INM r=0.51; adults, CM r=0.46; INM r=0.35), however, the maxilla revealed a strong correlation in children and a strong/moderate correlation in adults. In method 2, both arches were symmetrical (p>0.05).CONCLUSION:
Method 1 may be appropriate during orthodontic treatment, and method 2 may be indicated for final treatment. These methods are useful; however, only method 1 identified the side of asymmetry. The methods can contribute to future studies in syndromic and non-syndromic patients, before and after orthognathic surgeries and orthodontic treatment, comparing results.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dente Canino
/
Arco Dental
/
Incisivo
/
Dente Molar
Limite:
Adolescent
/
Adult
/
Child
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Dental Press J Orthod
Ano de publicação:
2024
Tipo de documento:
Article
País de publicação:
Brasil