Pulp (tooth)

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Pulp (tooth)
Tooth Section.svg
Section of a human molar
Latin pulpa dentis
Gray's subject #242 1118
MeSH Dental+pulp
Dorlands/Elsevier p_41/12679455

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The dental pulp is the part in the center of a tooth made up of living soft tissue and cells called odontoblasts.


Each person has a total of 52 pulp organs, 32 in the permanent and 20 in the primary teeth. The total volumes of all the permanent teeth organs is 0.38cc and the mean volume of a single adult human pulp is 0.02cc. Maxillary central incisor has shovel shaped coronal pulp with three short horns on the coronal roof and triangular in cross section. Cuspid has the longest pulp with elliptical cross section.

Crowns of the teeth contain coronal pulp. The coronal pulp has six surfaces: the occlusal, the mesial, the distal, the buccal, the lingual and the floor. Because of continuous deposition of dentin, the pulp becomes smaller with age. This is not uniform throughout the coronal pulp but progresses faster on the floor than on the roof or side walls.

Radicular pulp is that pulp extending from the cervical region of the crown to the root apex. They are not always straight but vary in shape , size and number. The radicular portion is continuous with the periapical tissues through the apical foramen or foramina.

Apical foramen is the opening of the radicular pulp into the periapical connective tissue. The average size is 0.3 to 0.4 mm in diameter. There can be two or more foramina separated by a portion of dentin and cementum or by cementum only. Most infections spread through the apical foramen from the periapical tissue to the pulp or from the pulp to periapical tissue.

Accessory canals are pathways from the radicular pulp , extending laterally through the dentin to the periodontal tissue seen especially in the apical third of the root.

Structural features

Pulp tissue removed during endodontic therapy by a size 20 broach file.

The central region of the the coronal and radicular pulp contains large nerve trunks and blood vessels.

This area is lined peripherally by a specialized odontogenic area which has three layers (from innermost to outermost)

1. Cell rich zone; innermost pulp layer which contains fibroblasts
2. Cell free zone (zone of Weil) which is rich in both capillaries and nerve networks. The nerve plexus of Rashkow is located in here
3. Odontoblastic layer; outermost layer which contains odontoblasts and lies next to the predentin and mature dentin

Cells found in the dental pulp include fibroblasts (the principal cell), odontoblasts, defence cells like histiocytes, macrophages, granulocytes, mast cells and plasma cells

Clinical significance

An inflammation of a pulp is known as pulpitis. Pulpitis can be extremely painful and in serious cases calls for the removal of the infected tooth or teeth.

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| group5 = Clinical Trials Involving Pulp (tooth) | list5 = Ongoing Trials on Pulp (tooth) at Clinical Trials.govTrial results on Pulp (tooth)Clinical Trials on Pulp (tooth) at Google

| group6 = Guidelines / Policies / Government Resources (FDA/CDC) Regarding Pulp (tooth) | list6 = US National Guidelines Clearinghouse on Pulp (tooth)NICE Guidance on Pulp (tooth)NHS PRODIGY GuidanceFDA on Pulp (tooth)CDC on Pulp (tooth)

| group7 = Textbook Information on Pulp (tooth) | list7 = Books and Textbook Information on Pulp (tooth)

| group8 = Pharmacology Resources on Pulp (tooth) | list8 = AND (Dose)}} Dosing of Pulp (tooth)AND (drug interactions)}} Drug interactions with Pulp (tooth)AND (side effects)}} Side effects of Pulp (tooth)AND (Allergy)}} Allergic reactions to Pulp (tooth)AND (overdose)}} Overdose information on Pulp (tooth)AND (carcinogenicity)}} Carcinogenicity information on Pulp (tooth)AND (pregnancy)}} Pulp (tooth) in pregnancyAND (pharmacokinetics)}} Pharmacokinetics of Pulp (tooth)

| group9 = Genetics, Pharmacogenomics, and Proteinomics of Pulp (tooth) | list9 = AND (pharmacogenomics)}} Genetics of Pulp (tooth)AND (pharmacogenomics)}} Pharmacogenomics of Pulp (tooth)AND (proteomics)}} Proteomics of Pulp (tooth)

| group10 = Newstories on Pulp (tooth) | list10 = Pulp (tooth) in the newsBe alerted to news on Pulp (tooth)News trends on Pulp (tooth)

| group11 = Commentary on Pulp (tooth) | list11 = Blogs on Pulp (tooth)

| group12 = Patient Resources on Pulp (tooth) | list12 = Patient resources on Pulp (tooth)Discussion groups on Pulp (tooth)Patient Handouts on Pulp (tooth)Directions to Hospitals Treating Pulp (tooth)Risk calculators and risk factors for Pulp (tooth)

| group13 = Healthcare Provider Resources on Pulp (tooth) | list13 = Symptoms of Pulp (tooth)Causes & Risk Factors for Pulp (tooth)Diagnostic studies for Pulp (tooth)Treatment of Pulp (tooth)

| group14 = Continuing Medical Education (CME) Programs on Pulp (tooth) | list14 = CME Programs on Pulp (tooth)

| group15 = International Resources on Pulp (tooth) | list15 = Pulp (tooth) en EspanolPulp (tooth) en Francais

| group16 = Business Resources on Pulp (tooth) | list16 = Pulp (tooth) in the MarketplacePatents on Pulp (tooth)

| group17 = Informatics Resources on Pulp (tooth) | list17 = List of terms related to Pulp (tooth)


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