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A cephalometric study of incisor angulations in a Nigerian population. 1989

M Isiekwe
Department of Child Dental Health, College of Medicine, University of Lagos, Nigeria.

This paper has the objective of establishing a standard norm for incisor angulations in a Nigerian population. The upper incisor angle to the Frankfort plane has a biological norm of between 119 degrees and 127 degrees, while the lower incisor angle (to the mandibular plane) is between 96 degrees and 104 degrees. The value for the interincisal angle is between 108 degrees and 116 degrees.

UI MeSH Term Description Entries
D007180 Incisor Any of the eight frontal teeth (four maxillary and four mandibular) having a sharp incisal edge for cutting food and a single root, which occurs in man both as a deciduous and a permanent tooth. (Jablonski, Dictionary of Dentistry, 1992, p820) Incisors
D009549 Nigeria A republic in western Africa, south of NIGER between BENIN and CAMEROON. Its capital is Abuja. Federal Republic of Nigeria
D012016 Reference Values The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality. Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference
D002508 Cephalometry The measurement of the dimensions of the HEAD. Craniometry
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D005145 Face The anterior portion of the head that includes the skin, muscles, and structures of the forehead, eyes, nose, mouth, cheeks, and jaw. Faces
D005147 Facial Bones The facial skeleton, consisting of bones situated between the cranial base and the mandibular region. While some consider the facial bones to comprise the hyoid (HYOID BONE), palatine (HARD PALATE), and zygomatic (ZYGOMA) bones, MANDIBLE, and MAXILLA, others include also the lacrimal and nasal bones, inferior nasal concha, and vomer but exclude the hyoid bone. (Jablonski, Dictionary of Dentistry, 1992, p113) Bone, Facial,Bones, Facial,Facial Bone
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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