Mixed Dentition Overview Quiz
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Questions and Answers

During which period is mixed dentition present?

  • 6 to 12 years (correct)
  • 2 to 6 years
  • Birth to 2 years
  • 12 years and older

What is the primary cause of exfoliation in children?

  • Eruption of permanent teeth (correct)
  • Decay of primary teeth
  • Infection of primary teeth
  • Overcrowding in the mouth

What happens to primary teeth when their roots do not resorb?

  • They require dental extraction (correct)
  • They naturally fall out
  • They become permanently fixed
  • They are capped with crowns

At what age do central incisors typically start to erupt in maxillary teeth?

<p>8-12 months (A)</p> Signup and view all the answers

What is an eruption cyst?

<p>Bluish swelling over an erupting tooth (D)</p> Signup and view all the answers

Which of the following accurately describes root resorption?

<p>Gradual dissolution of the root from below (B)</p> Signup and view all the answers

What is the typical shedding age for mandibular lateral incisors?

<p>7-8 years (C)</p> Signup and view all the answers

Which primary teeth generally erupt last?

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

Primary teeth erupt from ______ to 2 years.

<p>6 months</p> Signup and view all the answers

Mixed dentition occurs between the ages of ______ and 12 years.

<p>6</p> Signup and view all the answers

The process of shedding primary teeth is known as ______.

<p>exfoliation</p> Signup and view all the answers

Eruption cysts are also known as ______.

<p>eruption hematoma</p> Signup and view all the answers

Last permanent teeth, known as third molars, typically erupt in the ______ to early 20s.

<p>late teens</p> Signup and view all the answers

Centals incisors in the maxillary teeth typically shed between ______ to 7 years.

<p>6</p> Signup and view all the answers

Root resorption is the gradual ______ away of the root due to the eruption of succedaneous teeth.

<p>dissolving</p> Signup and view all the answers

The mandibular canine typically erupts between ______ and 12 years.

<p>9</p> Signup and view all the answers

Flashcards

Mixed Dentition

The period where both primary and permanent teeth are present, typically between the ages of 6 and 12.

Primary Teeth Eruption

The emergence of baby teeth, starting around 6 months and completing by about 2 years old.

Exfoliation

The process where a primary tooth is lost as it's pushed out by a permanent tooth.

Permanent Tooth Eruption

The emergence of adult teeth, starting at around 6 years old and continuing into the late teens/early 20's (with some exceptions like wisdom teeth).

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Root Resorption

The gradual dissolving of the primary tooth's root as the permanent tooth beneath pushes up.

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Eruption Cyst

A bluish, fluid-filled swelling that can occur around an erupting tooth.

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Shedding Times

The specific timeframe where a primary tooth is typically lost during childhood, slightly different from the permanent tooth emergence times in that period

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Primary teeth

Teeth appearing before permanent teeth.

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Mixed Dentition Age

Period (6-12 years) when both primary and permanent teeth are present.

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Primary Tooth Eruption Time

Baby teeth erupt from 6 months to 2 years.

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Permanent Tooth Eruption

Adult teeth emerge, gradually replacing primary teeth

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Exfoliation Process

Primary tooth loss due to permanent tooth emergence.

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Root Resorption

Dissolving of the primary tooth root by the permanent tooth.

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Eruption Cysts

Fluid-filled swellings around erupting teeth.

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Maxillary Teeth Shedding

Time frame for shedding of primary teeth in the upper jaw.

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Mandibular Teeth Shedding

Time frame for shedding of primary teeth in the lower jaw.

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Study Notes

Mixed Dentition Overview

  • Mixed dentition is the period between ages 6 and 12, characterized by both primary (baby) and permanent teeth.

Tooth Eruption Times

  • Birth to 6 or 8 months: No teeth erupted ("edentulous").
  • Primary teeth erupt from 6 months to 2 years.
  • All 20 primary teeth are present between 2 and 6 years.
  • Mixed dentition occurs from 6 to 12 years.
  • Only adult teeth appear after 12 years.
  • Last permanent teeth (third molars) erupt during late teens/early 20s.

Definition

  • The mixed dentition phase is the period when both primary and permanent teeth exist in the mouth.

Teeth Formation

  • Teeth formation begins early, even in young children.
  • A 3-year-old may already be forming future teeth.

Eruption Status at Different Ages

  • 8-year-olds may not have erupted premolars.
  • 9-year-olds show that 6-year-old molars have erupted.

Exfoliation Process

  • Permanent teeth move into position and cause root resorption of primary teeth.
  • The process of shedding primary teeth is called exfoliation.

Root Resorption

  • Root resorption is the gradual dissolving of a tooth root, caused by adjacent tooth eruption.
  • This process prepares the space for the appropriate permanent tooth.

Eruption Cysts

  • Also known as "eruption hematomas," these are bluish, fluid-filled swellings that develop over erupting teeth.
  • Common in children, they usually resolve independently.

Exfoliation Timeline (Maxillary Teeth)

  • Central Incisor: Eruption (8-12 months), Shedding (6-7 years)
  • Lateral Incisor: Eruption (9-13 months), Shedding (7-8 years)
  • Canine: Eruption (16-22 months), Shedding (10-12 years)
  • First molar: Eruption (13-19 months), Shedding (9-11 years)
  • Second molar: Eruption (25-33 months), Shedding (10-12 years)

Exfoliation Timeline (Mandibular Teeth)

  • Central Incisor: Eruption (6-10 months), Shedding (6-7 years)
  • Lateral Incisor: Eruption (10-16 months), Shedding (7-8 years)
  • Canine: Eruption (17-23 months), Shedding (9-12 years)
  • First molar: Eruption (14-18 months), Shedding (9-11 years)
  • Second molar: Eruption (23-31 months), Shedding (10-12 years)

Identifying Primary and Permanent Teeth

  • Consider the child's age.
  • Look for permanent 6-year/12-year molars.
  • Count the teeth from the midline.
  • Compare tooth sizes.
  • Consider the arch of the teeth.
  • If available, review x-rays.

Teeth Issues and Intervention

  • If roots don't absorb, teeth may need dentist removal.

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Related Documents

Mixed Dentition Lecture 10 PDF

Description

This quiz explores the mixed dentition phase occurring between ages 6 and 12, where both primary and permanent teeth are present. Test your knowledge on tooth eruption times, formation, and exfoliation processes during this crucial developmental stage. Perfect for dental students or anyone interested in pediatric dentistry!

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