periodontium
supporting hard and soft dental tissue between and including parts of the tooth and alveolar process
cementoenamel junction
tooth anatomy where crown enamel and the root cementum are close
cemental caries
shallow carious lesion of cementum
Sherpey fibers
collagen fibers from periodontal ligament partially inserted into both cementum and bone
canaliculi
tubular canals in both bone and cemetum
acellular cementum
first layers of cementum deposited without embedded cementocytes
cellular cementum
outer layers of cementum that contain embedded cementocytes
cemtenticles
mineralized bodies of cementum either attached to root or free in periodontal ligament
cemental spurs
symmetrical spheres of cementum attached to the root surface
hypercementosis
excessive production of cellular cementum
alveolar process
dental arch or tooth-bearing part of each jaw that contains alveoli
basal bone
part of jaws that forms the body of the maxilla or mandible
lamina dura
radiopaque line representing alveolar bone proper
alveolar crest
most cervical rim of alveolar bone proper
supporting alveolar bone
consists of both cortical bone and trabecular bone
cortical bone
plates of compact bone on facial and lingual surfaces of alveolar process
trabecular bone
cancellous bone between alveolar bone proper and places of cortical bone
interdental septum
alveolar process between two neighboring teeth
interradicular septum
alveolar process between the roots of the same tooth
mesial drift
natural movement of teeth over time toward the midline of the oral cavity
edentulous
dentition with either partial or complete loss of teeth
periodontal ligament space
radiolucent area representing periodontal ligament on radiographs
principal fibers
collagen fibers organized into groups on the basis of orientation to tooth and related function
alveolodental ligament
main principal fiber group with subgroups: alveolar crest, horizontal oblique, apical, and interradicular
alveolar crest group
alveodental ligament subgroup originating in alveolar crest to insert into cervical cementum
horizontal group
alveodental ligament subgroup originating in alveolar bone proper to insert horizontally into cementum
oblique group
alveodental ligament subgroup originating in alveolar bone proper to extend apically and obliquely to insert into cementum
apical group
alveolodental ligament subgroup radiating apically from cementum to insert into alveolar bone proper
interradicular group
alveolodental ligament subgroup on multirooted teeth inserted on cementum of one root to cementum of other roots
interdental ligament
principal fiber subgroup that inserts interdentally into cervical cementum of neighboring teeth
gingival fiber group
fiber groups within gingiva that have no bony attachments