Oral Histology Overview and Case Study

<p>Dentine is formed by the pulp's odontoblasts. (C)</p> Signup and view all the answers

<p>All of the above. (D)</p> Signup and view all the answers

<p>To provide a protective outer layer for the tooth (A)</p> Signup and view all the answers

<p>Ectoderm (B)</p> Signup and view all the answers

<p>Odontoblasts (A)</p> Signup and view all the answers

<p>The enamel crystallites are arranged in a way that allows them to efficiently resist forces from chewing. (D)</p> Signup and view all the answers

<p>Ameloblasts (C)</p> Signup and view all the answers

<p>Enamel Spindles (D)</p> Signup and view all the answers

<p>Stria of Retzius (C)</p> Signup and view all the answers

<p>They can be pathways for bacteria and other substances to reach the dentin. (C)</p> Signup and view all the answers

<p>The enamel does not have any living cells, making it incapable of cellular repair. (D)</p> Signup and view all the answers

<p>The smooth, hard surface of enamel prevents food debris from accumulating and contributing to the formation of plaque. (B)</p> Signup and view all the answers

<p>The biological and clinical implications of developmental defects in enamel and dentine (A)</p> Signup and view all the answers

<p>Goldberg, M., Kulkarni, A.B., Young, M., &amp; Boskey, A.(2011).Dentin: structure, composition and mineralization.Frontiers in bioscience (Elite edition), 3, 711–735. (B)</p> Signup and view all the answers

<p>Yu C, Abbott PV.An overview of the dental pulp: its functions and responses to injury.Aust Dent J. 2007 Mar;52(1 Suppl):S4-16. (C)</p> Signup and view all the answers

<p>Yamamoto T, Hasegawa T, Yamamoto T, Hongo H, Amizuka N.Histology of human cementum: Its structure, function, and development.Jpn Dent Sci Rev. 2016 Aug;52(3):63-74. (A)</p> Signup and view all the answers

<p>Enamel protein (D)</p> Signup and view all the answers

<p>Periodontal ligament (A)</p> Signup and view all the answers

<p>To provide structural support to the dentine (A)</p> Signup and view all the answers

<p>Tertiary dentine (D)</p> Signup and view all the answers

<p>Time of formation (B)</p> Signup and view all the answers

<p>Reduced permeability (A)</p> Signup and view all the answers

<p>Dentine has a lower mineral content than enamel (D)</p> Signup and view all the answers

<p>The tubules allow the passage of fluids, which transmit pressure changes to the pulp. (A)</p> Signup and view all the answers

<p>To protect the pulp from damage caused by bacteria or other irritants (C)</p> Signup and view all the answers

<p>Cementocytes (A)</p> Signup and view all the answers

<p>To provide attachment for the periodontal ligament fibres (D)</p> Signup and view all the answers

<p>The CEJ is always smooth and continuous. (B)</p> Signup and view all the answers

<p>Odontoblasts (B)</p> Signup and view all the answers

<p>Enamel has the highest mineral content, followed by dentine and then cementum. (A)</p> Signup and view all the answers

Growth lines in enamel indicating tooth development stages.

Small, tuft-like structures in the enamel, possibly indicating stress areas.

Optical phenomenon in enamel; bands showing light and dark alternating patterns.

Hypocalcified lines in enamel that reflect the rhythm of enamel formation.

Enamel is vulnerable to decay due to mineral loss but can remineralize.

Abnormalities in the formation of enamel, impacting dental health.

The arrangement and composition of dentin, a key component of teeth.

The roles of dental pulp, including sensation and nutrient supply to teeth.

A calcified tissue covering the roots of teeth, anchoring them to the gums.

The key process of hardening of dentin and enamel through mineral deposition.

Primarily composed of hydroxyapatite (96% mineral), little organic and water content.

Contains 70% minerals, 20% organic material, and 10% water; softer than enamel.

Relationships with the tooth root and periodontal ligaments; 50% mineral content.

Enamel rods and interrods provide strength and durability, protecting the tooth.

A type of cell found in cementum that helps maintain its structure.

Cementum without cells, primarily for support and attachment.

Cementum containing cells, facilitates adaptation to stress.

The area where cementum meets enamel on a tooth.

Anchors teeth, protects roots, and aids in tooth stability.

Blood vessels, lymph vessels, nerve supply, odontoblasts, fibroblasts, defense cells, undifferentiated cells, fibers, and ground substance all make up the pulp.

Dentine and pulp are related by origin (both derived from ectomesenchyme), location (pulp lies within the dentine), and shared function (sensation and support).

Cementum is a connective tissue with an embryonic origin from the ectomesenchyme.

Cementogenesis is carried out by cementoblasts, specialized cells producing cementum.

Inflammation may hinder pulp function, impacting blood flow and nerve response.

Microscopic channels in dentine housing odontoblast processes.

Initial dentine formed during tooth development.

Dentine formed after the completion of tooth development.

Dentine produced in response to injury or stimuli.

Dentine that becomes more mineralized with age or injury.

Extension of odontoblasts into dentinal tubules for nutrients.

Layer found at the periphery of dentine, suggesting structural resilience.