Biomaterial Database

Congenitally missing maxillary primary canines: report of three cases. 2006

S Y Cho, and C K Lee

School Dental Care Service, Department of Health, Hong Kong. rony_cho@dh.gov.hk

BACKGROUND Hypodontia is uncommon in the primary dentition and lateral incisors are the most commonly missing primary teeth in the patients affected. Studies have found that hypodontia in the primary dentition involving only maxillary canine is rare. METHODS Three cases of hypodontia in the primary dentition involving only maxillary canine are presented. Two of them were affected by hypodontia and hyperdontia in the permanent dentitions respectively, yet all the permanent canines developed normally in these three cases. CONCLUSIONS In children with congenitally missing maxillary canines, the permanent dentitions may show diverse anomalies in tooth numbers, ranging from hypodontia to hyperdontia.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008437	Maxilla	One of a pair of irregularly shaped bones that form the upper jaw. A maxillary bone provides tooth sockets for the superior teeth, forms part of the ORBIT, and contains the MAXILLARY SINUS.	Maxillae,Maxillary Bone,Bone, Maxillary,Bones, Maxillary,Maxillary Bones,Maxillas
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D003481	Cuspid	The third tooth to the left and to the right of the midline of either jaw, situated between the second INCISOR and the premolar teeth (BICUSPID). (Jablonski, Dictionary of Dentistry, 1992, p817)	Canine Tooth,Canine Teeth,Cuspids,Teeth, Canine,Tooth, Canine
D003818	Dentition, Mixed	The complement of teeth in the jaws after the eruption of some of the permanent teeth but before all the deciduous teeth are absent. (Boucher's Clinical Dental Terminology, 4th ed)	Dentition, Transitional,Dentitions, Mixed,Dentitions, Transitional,Mixed Dentition,Mixed Dentitions,Transitional Dentition,Transitional Dentitions
D005500	Follow-Up Studies	Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.	Followup Studies,Follow Up Studies,Follow-Up Study,Followup Study,Studies, Follow-Up,Studies, Followup,Study, Follow-Up,Study, Followup
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000848	Anodontia	Congenital absence of the teeth. It may involve all (total anodontia) or only some of the teeth (partial anodontia, hypodontia), or six or more of the teeth (oligodontia) and both the deciduous and the permanent dentition, or only teeth of the permanent dentition.	Dental Agenesis, Familial,Familial Dental Agenesis,Familial Tooth Agenesis,Hypodontia,Oligodontia,Partial Anodontia,Total Anodontia,Hypodontia Oligodontia 1,Tooth Agenesis, Familial,Tooth Agenesis, Selective, 1,Agenesis, Familial Dental,Agenesis, Familial Tooth,Anodontia, Partial,Anodontia, Total,Familial Dental Ageneses,Familial Tooth Ageneses,Oligodontia 1, Hypodontia,Oligodontias,Partial Anodontias,Total Anodontias
D001641	Bicuspid	One of the eight permanent teeth, two on either side in each jaw, between the canines (CUSPID) and the molars (MOLAR), serving for grinding and crushing food. The upper have two cusps (bicuspid) but the lower have one to three. (Jablonski, Dictionary of Dentistry, 1992, p822)	Premolar,Bicuspids,Premolars
D014094	Tooth, Deciduous	The teeth of the first dentition, which are shed and replaced by the permanent teeth.	Primary Tooth,Tooth, Primary,Baby Teeth,Baby Tooth,Dentition, Deciduous,Dentition, Primary,Milk Teeth,Milk Tooth,Primary Teeth,Teeth, Deciduous,Teeth, Primary,Deciduous Dentition,Deciduous Dentitions,Deciduous Teeth,Deciduous Tooth,Dentitions, Deciduous,Dentitions, Primary,Primary Dentition,Primary Dentitions,Teeth, Baby,Teeth, Milk,Tooth, Baby,Tooth, Milk