Odontometric sex discrimination in young Urhobo adults of South-South Nigeria

다국어 초록 (Multilingual Abstract)

The spate of unidentified human remains as a result of kidnapping, killings, and so forth was the reason for this study. The purpose of this study was to measure the crown and cusps of each of the permanent maxillary first two molars to determine discriminant score and functions among Urhobo people of Nigeria. All Undergraduates of the Delta State University, Abraka, who are pure breeds Urhobo, form the study population. Three hundred and six subjects (171 males and 135 females), with mean age 22.88±3.34 years, participated in the study, which is based on the simple random sampling technique. All four crown widths and the four cusps of the maxillary first two molars were measured in millimeter, from a prepared study models of dental stone, and crown area, crown and cusps indices were calculated. The level of sexual dimorphism was also calculated for each parameter. Descriptive statistics was used to summarize the data while inferential statistics were used to ascertain significant sexual differences and to determine discriminant scores and functions. Statistical significance was fixed at P≤0.05. Crown and cusp dimensions of the first two permanent maxillary molars exhibited statistically significant sexual dimorphism. The highest percentage of sexual dimorphism was crown area of maxillary second molar (9.08%), followed by first molar (7.85%). Next, were metacone, paracone, disto-buccomesio-lingual, and mesio-buccodisto-lingual widths. The overall sex discriminatory precisions of the various parameters in the maxillary first two molars are good. The findings of this study are of relevance in forensic anthropology.

참고문헌 (Reference)

1 World Medical Association, "World Medical Association Declaration of Helsinki. Ethical principles for medical research involving human subjects" 79 : 373-374, 2001

2 Kondo S, "Sexual dimorphism of cusp dimensions in human maxillary molars" 128 : 870-877, 2005

3 Banerjee A, "Sexual dimorphism in tooth morphometrics : An evaluation of the parameters" 8 : 22-27, 2016

4 Zorba E, "Sexual dimorphism in permanent teeth of modern Greeks" 210 : 74-81, 2011

5 Editors of Encyclopaedia Britannica, "Sexual dimorphism" Encyclopaedia Britannica

6 Macaluso PJ Jr, "Sex discrimination potential of permanent maxillary molar cusp diameters" 28 : 22-31, 2010

7 Sheikhi FE, "Sex discrimination by odontometrics in Libyan subjects" 6 : 157-164, 2016

8 Mealey L., "Sex differences" Academic Press 2000

9 이제훈, "Sex determination using upper limb bones in Korean populations" 대한해부학회 47 (47): 196-201, 2014

10 Sharma P, "Sex determination potential of permanent maxillary molar widths and cusp diameters in a North Indian population" 2 : 55-60, 2013

11 Yadav AB, "Sex assessment efficacy of permanent maxillary first molar cusp dimensions in Indians" 6 : 489-495, 2015

12 Eboh DE, "Maxillary canine teeth as supplement tool in sex determination" 9 : 25-30, 2010

13 Eboh DE, "Mandibular canine index in sex determination" 9 : 67-73, 2011

14 Geary DC, "Male, female: the evolution of human sex differences" American Psychological Association 1998

15 Bath-Balogh M, "Illustrated dental embryology, histology and anatomy" Elsevier Sunders 2006

16 Bannister LH, "Gray's anatomy, the anatomical basis of clinical practice" Churchill Livingstone 1699-1700, 2000

17 Bhavasar R, "Evaluation of sexual dimorphism by using permanent maxillary first molar in Gujarati population" 2 : 16-19, 2015

18 Nkejiaka C, "Emergency of ethnic movements in the Niger Delta region: from voice to armed struggle in the New Democratic Era (1999-present)" Central European University 2010

19 Manchanda AS, "Diagonal tooth measurements in sex assessment : A study on North Indian population" 7 : 126-131, 2015

20 Woelfel JB, "Dental anatomy: its relevance to dentistry" Lippincott Williams & Wilkins 2002

21 Agnihotri G, "Crown and cusp dimensions of the maxillary first molar : a study of sexual dimorphism in Indian Jat Sikhs" 23 : 1-6, 2010

22 Eboh DE, "A dimorphic study of maxillary first molar crown dimensions of Urhobos in Abraka, South-Southern Nigeria" 29 : 96-100, 2012