Each tooth is embedded in an antrum in the jaw bone. What is this type of attachment called?

Appeared in: UP CHO - 10 September 2021

Explanation

Thecodont describes a type of dentition where the teeth are set in deep, bony sockets (alveoli) in the jawbone.
This firm attachment provides stability for chewing and is a characteristic feature of mammals, including humans.
The question specifically asks about the method of attachment, which is the definition of thecodont.

Option B: This term relates to the pylorus, the part of the stomach that connects to the small intestine, and has no relation to teeth.
Option C: This term describes having two successive sets of teeth (deciduous and permanent), not the method of attachment to the jaw.
Option D: This term relates to the fundus, the upper, rounded part of an organ like the stomach or uterus, and is unrelated to dentition.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Terminology of human dentition as background academic context rather than a clinical decision trigger.
Understanding thecodont attachment is crucial for dentistry and oral surgery, as procedures like tooth extraction involve separating the tooth from its socket (alveolus).
Conditions like advanced periodontal disease can destroy the alveolar bone and periodontal ligament, leading to tooth mobility and loss, which compromises this thecodont attachment.
What if? If a patient has significant bone loss around a tooth socket due to infection, the thecodont attachment is weakened. The nursing priority shifts to assessing for tooth mobility, educating on oral hygiene to prevent further bone loss, and preparing the patient for potential extraction and bone grafting procedures.

How to Approach the Question

First, identify the key concept in the question: the 'type of attachment' of a tooth 'embedded in an antrum (socket) in the jaw bone'.
Next, analyze the options provided. Recognize that 'pyloric' and 'fundic' are anatomical terms related to the stomach, not the mouth, and can be eliminated.
Differentiate between the remaining terms. 'Diphyodont' refers to having two sets of teeth, while 'thecodont' refers to the method of attachment.
Match the question's focus on 'attachment' with the definition of 'thecodont' to select the correct answer.

Concept Tested & Keywords

QgK_5e566zMpFKTItiCrUT

E6 Anatomy Grays 43e Vol 2 Part 1 p. 96-98

E6 Nelson Textbook of Pediatrics(2024) — Volume 2 p. 17-19

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