title: A radiographic study of aging changes of the dental pulp and dentin in normal teeth.
abstract: One aspect of a previous retrospective radiographic study was an examination of diameter and length changes of root canals at various ages. It was found that root canal shrinkage increased with advancing age. In the present follow-up study, a larger population (500 subjects) was used and only mandibular anterior teeth were evaluated. Root canal shrinkage was calculated vertically and horizontally. Measurements taken were tooth length, coronal length, apical length, root canal length, cervical width, midroot width, and apical width. Six age groups were examined: 17 through 29; 30 through 39; 40 through 49; 50 through 59; 60 through 69; and 70 through 79. Root canals showed statistically significantly more shrinkage with advancing age; there were significant changes among all groups. These findings could prove useful in anthropology and forensics and as an aging biomarker.
authors.affiliation: Department of Endodontology, Temple University, School of Dentistry, Philadelphia, PA 19140.
authors.forename: D R
authors.initials: DR
authors.lastname: Morse
authors.forename: J V
authors.initials: JV
authors.lastname: Esposito
authors.forename: R S
authors.initials: RS
authors.lastname: Schoor
mesh_terms: D000293:Adolescent; D000328:Adult; D000366:Age Determination by Teeth; D000367:Age Factors; D000368:Aged; D000375:Aging; D000704:Analysis of Variance; D003430:Cross-Sectional Studies; D003786:Dental Pulp Cavity / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007180:Incisor / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D008297:Male; D008334:Mandible; D008875:Middle Aged; D009811:Odontometry; D014092:Tooth Root / Q000033:anatomy & histology* / Q000000981:diagnostic imaging