Three-dimensional morphology of first molars in relation to ethnicity and the occurrence of cleft lip and palate

Autor: Philine Metelmann, Karl-Friedrich Krey, Karl-Heinz Dannhauer, Sandra Echtermeyer, Alexander Hemprich
Jazyk: angličtina
Rok vydání: 2017
Předmět:
0301 basic medicine
Molar
Male
Teeth
Physiology
Digestive Physiology
Dentistry
lcsh:Medicine
Cleft Lip and Palate
Mandible
0302 clinical medicine
Medicine and Health Sciences
Maxilla
Morphogenesis
Ethnicity
Medicine
lcsh:Science
Child
Musculoskeletal System
Geometric morphometry
Multidisciplinary
Dentition
Craniometry
Cleft Palate
Female
Anatomy
Research Article
Adolescent
Imaging Techniques
Cephalometry
Cleft Lip
Oral Medicine
Orthodontics
Molars
Research and Analysis Methods
03 medical and health sciences
Three dimensional morphology
Dental Arch
stomatognathic system
Congenital Disorders
Humans
In patient
Birth Defects
Skeleton
Mouth
business.industry
Morphometry
lcsh:R
Biology and Life Sciences
030206 dentistry
030104 developmental biology
Jaw
Otorhinolaryngology
lcsh:Q
business
Digestive System
Head
Developmental Biology
Zdroj: PLoS ONE
PLoS ONE, Vol 12, Iss 10, p e0185472 (2017)
ISSN: 1932-6203
Popis: Objectives This study aims to describe morphological peculiarities of maxillary and mandibular first molars in Europeans, Asians and Europeans with cleft lip and palate. Material and methods Reflex microscopy was used to obtain three-dimensional morphometric landmarks from 40 models (11 Europeans and 13 Asians without cleft lip and palate, 16 Europeans with unilateral cleft lip and palate). The cases were examined using traditional morphometry and geometric morphometry, and visualized using thin-plate splines. Results Classic morphometry showed no right/left differences in the study groups and no significant differences with regard to the cleft side in patients with cleft lip and palate. In Asians, a significantly greater mesiodistal width was found. Geometric morphometry showed an enlarged centroid size in Asians (maxilla and mandible). In cleft patients, the cleft site did not appear to impact the morphology of first molars. Conclusion Unilateral clefting did not affect the size and shape of molars; however, characteristic ethnicity-based differences were in fact identified. The results are relevant for orthodontic treatment with preadjusted appliances, and prosthetic CAD/CAM restorations.
Databáze: OpenAIRE
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