Pattern of permanent teeth present in individuals with ectodermal dysplasia and severe hypodontia suggests treatment with dental implants.
OBJECTIVE
The objective of this study was to assess the pattern of permanent teeth present in a self-selected sample of 17 female and 35 male patients with ectodermal dysplasia presenting for treatment with dental implants.


METHODS
Mean age of sample: 18.7 years, age range: 5.9 to 60.9 years. Panoramic radiographs were examined independently by two investigators to determine the permanent teeth present. None of the sample reported extractions of permanent teeth prior to presenting for implants.


RESULTS
Permanent teeth most likely to be present, reported as a percentage of the patient sample with that tooth, were: maxillary central incisors (42%), maxillary first molars (41%), mandibular first molars (39%), maxillary canines (22%), mandibular second molars (17%), maxillary second premolars (15%), and mandibular premolars (12%). Comparing dentition by quadrants, mandibular anterior teeth (canines and incisors) were least likely to be present.


CONCLUSIONS
Results support previous findings that the maxillary central incisors, maxillary first molars, mandibular first molars, and maxillary canines are the most conserved teeth in hypodontia. Successful use of osseointegrated implants in the anterior mandibles of most of these patients suggests that habilitation of the mandible with dental implant-supported prostheses is a reasonable option.
Department of Prosthodontics, University of North Carolina School of Dentistry, USA.
A D
AD
Guckes
M W
MW
Roberts
G R
GR
McCarthy
D000293:Adolescent; D000328:Adult; D000848:Anodontia / Q000000981:diagnostic imaging / Q000473:pathology* / Q000534:rehabilitation / Q000601:surgery; D001641:Bicuspid / Q000002:abnormalities; D002648:Child; D002675:Child, Preschool; D003481:Cuspid / Q000002:abnormalities; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D019094:Dental Prosthesis, Implant-Supported; D004476:Ectodermal Dysplasia / Q000473:pathology*; D005260:Female; D006801:Humans; D007180:Incisor / Q000002:abnormalities; D008297:Male; D008334:Mandible; D008437:Maxilla; D008875:Middle Aged; D008963:Molar / Q000002:abnormalities; D011862:Radiography, Panoramic
D015921:Dental Implants