Prevalence of mandibular third molars according to the Pell & Gregory and winter classifications
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Universidade Federal de Minas Gerais
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Artigo de periódico
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Membros da banca
Resumo
Aim This study aimed to evaluate the prevalence of
mandibular third molar positions according to the Pell &
Gregory and Winter classifications, and to verify the
association between the two classification methods.
Material and Methods This cross-sectional study was
conducted at dental imaging clinic, from January to March
2019. The inclusion criteria were third molars with complete rhizogenesis and the presence of the mandibular
second molar. Patients under 16 years were excluded.
Digital orthopantomography (panoramic radiography)
radiographs of the mandibular third molars were analyzed
and observed according to both Pell & Gregory and the
Winter classifications, in addition to verifying if they were
impacted. Data were submitted to chi-square test.
Results and Statistics
In total, 1087 teeth were analyzed, and 1055 teeth were
included in the study. The teeth were most commonly
found to be in the mesioangulated position (41.8%). Higher
frequency was observed for position IIB (26.4%). The
prevalence of impacted teeth was 79.6%. There was a
statistically significant association between the Winter
classification and Pell & Gregory classification
(p\0.001)
Abstract
Assunto
Prevalence, Tooth impacted, Molar third, Radiography panoramic
Palavras-chave
Pell & Gregory, Prevalence, Impacted teeth, Third molar, Orthopantomography
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https://link.springer.com/article/10.1007/s12663-020-01473-1