Shedding Of Deciduous Teeth Question And Answers

Shedding Of Deciduous Teeth

Question 1. Write briefly about the shedding of deciduous teeth.
Answer:

Shedding of Deciduous Teeth Definition:

The physiological process resulting in the elimination of the deciduous dentition is called shedding.

Shedding of Deciduous Teeth Pattern:

As the permanent incisors, canines, and premolars develop and begin to erupt, they influence the pattern of shedding of the deciduous teeth.
It depends on the movement of permanent teeth.
It starts from the lingual aspect as the movement of permanent teeth is formed from lingual to buccal.

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Shedding of Deciduous Teeth Mechanism:

The shedding of the deciduous teeth is the result of progressive resorption of the roots of teeth and their supporting tissue.

Shedding of deciduous teeth questions and answers

Shedding of Deciduous Teeth Bony socket:

Shedding of Deciduous Teeth Dental tissue:

Odentoclasts derive from the monocyte and migrate from blood vessels to the resorption site
Reduced enamel epithelium of the erupting permanent teeth damages the cementoblasts layer.
Odontoclasts appear around the roots of deciduous teeth and cause the resorption of dentin, cementum, and even enamel.
During this coronal pulp appears normal.
Odontoblast emerges from the pulpal vessels and migrates to the presenting surface to form an odontoclast.
This causes the resorption of dentin from within.

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PDL (Perodontal ligament):

Factors involved in the resorption of PDL are
Apoptosis.
This is induced in response to local cell insult.
It involves condensation of the cell with its ultimate phagocytosis.
Pressure from erupting permanent teeth results in some root loss.
This results in the loss of supporting tissue.
As the support of the tooth diminishes, the tooth is less able to withstand the increased masticatory forces, thus shedding is accelerated.
Growth of tire face and jaws and the corresponding enlargement in size.
This increases the forces applied to the deciduous teeth.

Shedding Of Deciduous Teeth

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Question 2. Osteoclasts.
Answer:

Osteoclast is a type of bone cell that removes bone tissue by removing the mineralized matrix of bone.
They lie in resorption bays called Howship’s lacunae.
It is a large cell approximately 40 – 100 mm in diameter with 15 – 20 closely packed nuclei.
Adjacent to the tissue surface, the osteoclast cell membrane consists of deep folds that form a ruffled border.
At the periphery of this order, the plasma membrane is apposed closely to the bone surface.
Osteoclasts are rich in acid phosphatase and other lysosomal enzymes.

Osteoclasts Precursor:

Osteoclasts are derived from hemopoietic cells of the monocyte-macrophage lineage.

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Question 3. Odontoclast Cells.

Answer:

The cells responsible for the removal of dental hard tissue, identical to osteoclasts are called odontoclast.
They are large, multi-nucleated cells occupying resorption bays on the resorption site.
The cytoplasm is vacuolated.
The cell surface adjacent to the resorbing hard tissue forms a ruffled border.

Odontoclasts Formation:

Odontoclasts Function:

They are involved in the resorption of deciduous teeth.
They cause the resorption of dentin, cementum, and even enamel with intact pulp.
Next, at the predentin surface, odontoclast.
Causes reapportion of dentin from within the pulp.

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Question 4. Shedding of deciduous teeth.
Answer:

The physiologic process resulting in the elimination of deciduous dentition is called “shedding”.

Shedding of Deciduous Teeth Mechanism:

Osteolcast resorbs the bony socket of the deciduous teeth.
Odontoclast resorbs the dentin, cementum, enamel, and also dentin from within the pulp.
PDL is resorbed due to apoptosis, increased masticatory forces, pressure from erupting permanent teeth, and due to growth of the jaw.
When the resorptive process has advanced so far that the roots cannot any more support the tooth, the tooth is shed.