Association between Bolton discrepancy and Angle malocclusions
Braz. oral res. (Online)
;
29(1): 1-6, 2015. tab
Article
in English
| LILACS
| ID: lil-777187
ABSTRACT
This study aimed to assess and compare the overall and anterior ratios of tooth size discrepancies in all Angle malocclusion groups. The following null hypothesis (H0) was tested no difference between tooth size discrepancies (overall and anterior) would be observed among Angle malocclusion groups. The sample comprised of 711 pre-orthodontic treatment study casts of Brazilian patients with a mean age of 17.42 years selected from private practices in Brazil. The casts were divided into 3 groups according to the type of malocclusion Class I (n = 321), Class II (n = 324), and Class III patients (n = 66). The measurement of the greatest mesiodistal width of the teeth was performed using a centesimal precision digital caliper directly on the study casts, from the distal surface of the left first molar to the distal surface of the right first molar. The overall and anterior ratios between the maxillary and mandibular teeth were evaluated using Bolton’s method. The following statistical tests were applied chi-square, independent t-test, and one-way ANOVA. Results showed that all Angle malocclusions groups exhibited a ratio compatible with those recommended by Bolton. With respect to the overall and anterior ratios among the malocclusion groups, no statistically significant differences were found. The null hypothesis was accepted because the results showed no differences in the overall and anterior ratios of tooth size discrepancies among different Angle malocclusion groups.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Tooth
/
Malocclusion
Type of study:
Observational study
/
Risk factors
Limits:
Adolescent
/
Female
/
Humans
/
Male
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Braz. oral res. (Online)
Journal subject:
Dentistry
Year:
2015
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Unidade de Ensino Superior Ingá/BR
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