Ch 13 - Dentin & Pulp
This structure forms when HERS encounters a blood vessel during root fomation and directs it to go around the blood vessel.
What is an accessory canal?
Alveolar bone, cementum, periodontal ligament, and to a minor role, gingiva
What are the components of the periodontium?
What is the predominant inorganic material found in dental hard tissues and bone?
What is calcium hydroxyapatite?
The dentin that is formed in between the dentinal tubules
What is intertubular dentin?
The type of cementum which has embedded cementocytes and located mainly in the apical third of the root
What is cellular cementum?
Histologically, it appears scalloped and forms when the basement membrane dissolves between the materials secreted by ameloblasts and odontoblasts during tooth formation
What is the dentinoenamel junction (DEJ)?
Histologically seen as a very dark line within either the enamel or dentin and caused by the trauma of birth of the child
What is the neonatal line?
This bone remains in a person with edentulism
What is basal bone?
The cranial nerve which is formed from the first branchial/ pharyngeal arch
What is Cranial Nerve V / the trigeminal nerve?
Dentin which is formed after the apical foramina has been formed
What is secondary dentin?
The most cervical rim of alveolar bone that is seen as a distinct white line between adjacent teeth on a radiograph
What is the alveolar crest?
The outer enamel epithelium, stellate reticulum, stratum intermedium, and inner enamel epithelium
What are the 4 layers of the enamel organ that are differentiated within the bell stage?
The center area within the pulp containing many cells and an extensive vascular supply
What is the pulpal core?
The alveolar crest group, horizontal group, oblique group, apical group, and interradicular group
What are the subgroups of the alveolodental ligament fibers?
Red, puffy, edematous, swollen, increased gingival crevicular fluid and white blood cell count, and ulcerated gingival tissues
What are signs of gingivitis?