Variations in the Cusps of Mandibular Molars in Koreans

Bibliographic Data

ID7992955
AuthorsHong‐il Yoo (0000-0002-7405-471X, Chonnam National University), Hong-Il Yoo (Chonnam National University), Jihye Kim (0000-0003-3511-8327, Chonnam National University), Ji-Hye Kim (0000-0003-2822-4383, Chonnam National University), Sun-Hun Kim (Chonnam National University)
Year2014
Volume27
Issue3
Pages155-155
Publication date2014-01-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueKorean Journal of Physical Anthropology (JOURNAL)
Journal identifiersISSN: 1225-150X • E-ISSN: 2287-626X
PublisherXMLink (PUBLISHER)
DOI10.11637/kjpa.2014.27.3.155
OpenAlexW2106885535
LanguageEN
Citations received5
References cited17

This study aimed to investigate the cusp size and morphological characteristics of permanent mandibular molars in Koreans with reference to the hypoconulid, and to analyze the differences and correlations between both sexes as well as between first and second mandibular molars. We obtained data from dental casts of 110 adults (78 males and 32 females). Mesiodistal and buccolingual diameters of first and second mandibular molars, the area of five cusps (protoconid, metaconid, hypoconid, entoconid, and hypoconulid), as well as the total cusp area and occlusal table area were measured. Paired t-test was performed to analyze the morphological differences between first and second mandibular molars and the sex differences between both sexes using SPSS program. Crown diameters and cusp areas of mandibular first molars were larger than those of mandibular second molars in both sexes. The hypoconulid was the most variable in size and morphological pattern among the five cusps, and the first molars showed a higher incidence of hypoconulid than the second molars. Except for the entoconid area of the first molar (p=0.06) and the hypoconulid area of the second molar (p=0.24), all other mean values were larger in males than in females, demonstrating a significant sexual dimorphism. These data suggest that the teeth which develop late in ontogeny tend to be smaller in size and more variable in morphological characteristics

Biology · Crown (dentistry · Cusp (singularity · Genus · Geometry · Mandible (arthropod mouthpart · Mandibular first molar · Mandibular molar · Mandibular second molar · Molar · Sexual dimorphism · Zoology · dental development and anomalies · Dental Radiography and Imaging · Dentistry · Forensic Anthropology and Bioarchaeology Studies · Mathematics · Medicine · Orthodontics

Tools

Open DOISci-HubOpen Access