A survey on the occlusal Morphology of premolars in a sample of Egyptian Population
medhat, alaa; Elzeiny, medhat; Fathy, Iman;
Abstract
Major and minor differences of dental morphology among populations have a significant
impact on anthropological, forensic research and dentists as well. Hence in this study we aimed at
surveying various presented external morphologies of maxillary and mandibular premolars in an
Egyptian population sample, regarding the analysis of occlusal pattern and occlusal outline. Two
hundred healthy premolars were collected from archived teeth, fifty of each type of premolars. Then
classified according to Arizona State University-Dento-anthropological System (ASUDAS) for
occlusal pattern and traced for occlusal outline. We found that few accessory cusps were observed
in surveyed maxillary premolars. However, an accessory lingual cusp was detected among some of
the surveyed teeth in mandibular premolars. Different occlusal outlines were recorded and tabulated.
Therefore, it was concluded that Presence of mesial accessory cusp had a higher prevalence in
maxillary first premolar, while two lingual cusps in mandibular second premolars were the most
common. Regarding occlusal outline the hexagonal outline was dominating in upper first premolar
while the oval was dominating in upper second. for lower premolars, the lower first premolars were
diamond and the lower second premolars were rounded and square.
impact on anthropological, forensic research and dentists as well. Hence in this study we aimed at
surveying various presented external morphologies of maxillary and mandibular premolars in an
Egyptian population sample, regarding the analysis of occlusal pattern and occlusal outline. Two
hundred healthy premolars were collected from archived teeth, fifty of each type of premolars. Then
classified according to Arizona State University-Dento-anthropological System (ASUDAS) for
occlusal pattern and traced for occlusal outline. We found that few accessory cusps were observed
in surveyed maxillary premolars. However, an accessory lingual cusp was detected among some of
the surveyed teeth in mandibular premolars. Different occlusal outlines were recorded and tabulated.
Therefore, it was concluded that Presence of mesial accessory cusp had a higher prevalence in
maxillary first premolar, while two lingual cusps in mandibular second premolars were the most
common. Regarding occlusal outline the hexagonal outline was dominating in upper first premolar
while the oval was dominating in upper second. for lower premolars, the lower first premolars were
diamond and the lower second premolars were rounded and square.
Other data
Title | A survey on the occlusal Morphology of premolars in a sample of Egyptian Population | Authors | medhat, alaa; Elzeiny, medhat; Fathy, Iman | Keywords | occlusal morphology;maxillary premolars;mandibular premolars;occlusal outline;ASUDAS classification, | Issue Date | Jan-2023 | Journal | Egyptian Dental Journal | Volume | Vol. 69 | Start page | 157 | End page | 166 | ISSN | 2090-2360 | DOI | 10.21608/edj.2022.162826.2272 |
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