Full Answer
What is the meaning of pulpal?
Definition of pulpal : of or relating to pulp especially of a tooth a pulpal abscess : of or relating to pulp especially of a tooth a pulpal abscess
What is the pulp?
The pulp is the neurovascular bundle central to each tooth, permanent or primary. It comprises a central pulp chamber, pulp horns, and radicular canals.
What is the pulpal floor of a molar tooth?
It has been thought that the pulpal floor of a molar tooth is formed as a continuation of the coronal dentine in rodents. In humans, the interradicular dentine develops from a separate mineralization center or centers (subpulpal lobe), and only later does it unite with the coronal dentine.
How is a crack in the pulpal floor visualized?
The crack may be visualized extending along the pulpal floor from mesial to distal. Extending the pulpal floor to “follow” the crack apically can provide information on depth and nerve proximity.
What is the pulpal chamber?
Located beneath the dentin layer (which is the hard tissue right below your enamel) is the pulp chamber, which is the space where your dental pulp lives. Pulp is the soft tissue at the center of your teeth housing connective tissue, nerves, and blood vessels.
What is floor of pulp chamber?
Law of centrality: the floor of the pulp chamber is always located. in the center of the tooth at the level of the CEJ (Figs. 1–3). Law of concentricity: the walls of the pulp chamber are always. JOURNAL OF ENDODONTICS.
What is pulpal surface of dentin?
It is usually covered by enamel on the crown and cementum on the root and surrounds the entire pulp. By volume, 45% of dentin consists of the mineral hydroxyapatite, 33% is organic material, and 22% is water. Yellow in appearance, it greatly affects the color of a tooth due to the translucency of enamel.
What is a pulpal?
Your tooth pulp is found in the hollow center of your tooth. This hollowed out area is divided into two parts: your pulp chamber and your root canal. Your pulp chamber is the hollowed-out space in the body or crown of your tooth, and your root canal is the section that extends down the root.
How do you identify a pulp chamber?
The floor of the pulp chamber is always located at the center of the tooth and at the level of the CEJ (Figure 2). The walls of the pulp chamber are concentric to the external surfaces of the tooth at the level of the CEJ (Figure 6). The CEJ is the most consistent landmark in locating the position of the pulp chamber.
How deep is the pulp chamber?
The height of a pulp chamber is between 1.5 to 2.0 mm (Figure 5a). This 1.5-mm to 2.0-mm measurement is the most variable due to calcifications because of aging, caries, and restorations.
What is Predentin?
[3] Predentin is the newly formed dentin before calcification and maturation. It is the innermost portion of dentin and is located adjacent to pulpal tissues. It is usually thick where active dentinogenesis occurs.
Why is pulp called pulp?
Cocker's original preference was to name the band after the film Pulp starring Michael Caine, though it was decided that this was too short. Instead, the two took inspiration from a copy of the Financial Times which listed the Arabicas coffee bean in its commodity index.
What is enamel pulp?
Cells forming a stellate reticulum lying between outer and inner layers of the enamel organ of a tooth. See also: pulp.
Where is the pulp cavity located?
The pulp chamber is the upper section of the cavity contained within the crown of the tooth. The root canals are the lower section of the cavity found within the tooth's roots.
What is the difference between a root canal and a Pulpal debridement?
Pulpal debridement – is the removal of the pulp/nerve of a tooth. Debridement of the pulp chamber of a tooth is done prior to conventional root canal therapy to alleviate severe pain.
What causes pulpitis?
Cavities are the most common cause of pulpitis. These are holes in your teeth that are also called tooth decay. Cavities are caused by not brushing your teeth properly, bacteria, and lots of sugar.
Abstract
Development of the pulpal floor was reviewed from both macroscopic and microscopic perspectives, and relations between individual variation in tooth roots and their development are considered. It has been thought that the pulpal floor of a molar tooth is formed as a continuation of the coronal dentine in rodents.
Key words
J. Oral Biosci.
What is the Pulpal core?
Pulpal core, which is in the center of the pulp chamber with many cells and an extensive vascular supply; except for its location, it is very similar to the cell-rich zone. Cell rich zone; which contains fibroblasts and undifferentiated mesenchymal cells.
Why is pulp considered pulp?
The pulp has a background similar to that of dentin, because both are derived from the dental papilla of the tooth germ. During odontogenesis, when the dentin forms around the dental papilla, the innermost tissue is considered pulp.
What is the function of the plexus of Raschkow?
The plexus of Raschkow monitors painful sensations. By virtue of their peptide content they also play important functions in inflammatory events and subsequent tissue repair. There are two types of nerve fiber that mediate the sensation of pain: A-fibers conduct rapid and sharp pain sensations and belong to the myelinated group, whereas C-fibers are involved in dull aching pain and are thinner and unmyelinated. The A-fibers, mainly of the A-delta type, are preferentially located in the periphery of the pulp, where they are in close association with the odontoblasts and extend fibers to many but not all dentinal tubules. The C-fibers typically terminate in the pulp tissue proper, either as free nerve endings or as branches around blood vessels. Sensory nerve fibers that originate from inferior and superior alveolar nerves innervate the odontoblastic layer of the pulp cavity. These nerves enter the tooth through the apical foramen as myelinated nerve bundles. They branch to form the subodontoblastic nerve plexus of Raschkow which is separated from the odontoblasts by a cell-free zone of Weil, therefore this plexus lies between the cell free and cell rich zones of the pulp.
What are the cells in the pulp of the tooth?
Cells found in the dental pulp include fibroblasts (the principal cell), odontoblasts, defence cells like histiocytes, macrophage, granulocytes, mast cells and plasma cells. The nerve plexus of Raschkow is located central to the cell-rich zone.
Which plexus is separated from the odontoblasts?
They branch to form the subodontoblastic nerve plexus of Raschkow which is separated from the odontoblasts by a cell-free zone of Weil, therefore this plexus lies between the cell free and cell rich zones of the pulp. Legend: 1 - Odontoblast layer; 2 - Cell-free zone of Weil; 3 - Cell-rich zone; 4 - Pulp core.
Why do teeth have pulp necrosis?
It is often subsequent to chronic pulpitis. Teeth with pulp necrosis will need to undergo root canal treatment or extraction to prevent further spread of infection which may lead to an abscess.
What is the pulp of a tooth made of?
The pulp is the part in the center of a tooth made up of living connective tissue and cells called odontoblasts. The pulp is a part of the dentin–pulp complex (endodontium).
Where do cuspal fractures occur?
The fracture originates on the occlusal surface and extends gingivally along a buccal or lingual groove and the mesial or distal marginal ridge.
What is vertical root fracture?
A vertical root fracture is a complete or incomplete fracture of the root in a buccal lingual direction. The fracture may extend the length of the root or as a shorter segment along any portion of the root. There may or may not be patient symptoms associated with the fracture.
Overview
Anatomy
The pulp is the neurovascular bundle central to each tooth, permanent or primary. It is composed of a central pulp chamber, pulp horns, and radicular canals. The large mass of the pulp is contained within the pulp chamber, which is contained in and mimics the overall shape of the crown of the tooth. Because of the continuous deposition of the dentine, the pulp chamber becomes smaller with the age. This is not uniform throughout the coronal pulp but progresses faster on the floor t…
Development
The pulp has a background similar to that of dentin because both are derived from the dental papilla of the tooth germ. During odontogenesis, when the dentin forms around the dental papilla, the innermost tissue is considered pulp.
There are 4 main stages of tooth development:
1. Bud stage
Internal structure
The central region of the coronal and radicular pulp contains large nerve trunks and blood vessels.
This area is lined peripherally by a specialized odontogenic area which has four layers (from innermost to outermost):
1. Pulpal core, which is in the center of the pulp chamber, with many cells and an extensive vascular supply; except for its location, it is very similar to the cell-rich zone.
Functions
The primary function of the dental pulp is to form dentin (by the odontoblasts).
Other functions include:
• Nutritive: the pulp keeps the organic components of the surrounding mineralized tissue supplied with moisture and nutrients;
• Protective/Sensory: extremes in temperature, pressure, or trauma to the dentin or pulp are perceived as pain;
Pulp testing
The health of the dental pulp can be a variety of diagnostic aids which test either the blood supply to a tooth (Vitality Test) or the sensory response of the nerves within the root canal to specific stimuli (Sensitivity Test). Although less accurate, sensitivity tests, such as Electric Pulp Tests or Thermal Tests, are more routinely used in clinical practice than vitality testing, which requires specialised equipment.
Pulp diagnoses
In a healthy tooth,
Reversible pulpitis is a mild to moderate inflammation caused by any momentary irritation or stimulant whereby no pain is felt upon the stimulants' removal. The pulp swells when the protective layers of enamel and dentine are compromised. Unlike irreversible pulpitis, the pulp gives a regular response to sensibility tests and inflammation resolves with management of the …
See also
• Dental pulp stem cells
• Dental pulp test