question in dental deck

[dds_aspirant]

Hi,

This is a question from 2006 dental decks in Anatomic sciences (PDL/G).

Surrounding the root of each tooth is a specialised epithelium known as
Answers:
1) Connective tissue attachment
2) periodontal ligament attachment
3) Junctional Epithelium
4) Nasmyth's membrane.

Can any one clarify me the answer because the decks say it is the junctional epithelium and I feel it should be periodontal ligament attachment because junctional epithelium does not extends to the root of the tooth and periodontal ligament exists in the root portion of the tooth.

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[elto]

Hi,

This is a question from 2006 dental decks in Anatomic sciences (PDL/G).

Surrounding the root of each tooth is a specialised epithelium known as
Answers:
1) Connective tissue attachment
2) periodontal ligament attachment
3) Junctional Epithelium
4) Nasmyth's membrane.

Can any one clarify me the answer because the decks say it is the junctional epithelium and I feel it should be periodontal ligament attachment because junctional epithelium does not extends to the root of the tooth and periodontal ligament exists in the root portion of the tooth.

Hi:
I think when they say: "surrounding", they mean like a "ring" around the root....It is just that the way they made the question is confusing....

 

[dds_aspirant]

But isnt the junctional epithelium in the sulcus that attaches the gingiva with the tooth through hemidesmosomes. Which is located above CEJ (cemento enamel junction) entirely on the enamel of a tooth. So how can it be surrounding the root?

Thanks!

Hi:
I think when they say: "surrounding", they mean like a "ring" around the root....It is just that the way they made the question is confusing....

 

[rahmed]

Hi,

This is a question from 2006 dental decks in Anatomic sciences (PDL/G).

Surrounding the root of each tooth is a specialised epithelium known as
Answers:
1) Connective tissue attachment
2) periodontal ligament attachment
3) Junctional Epithelium
4) Nasmyth's membrane.

Can any one clarify me the answer because the decks say it is the junctional epithelium and I feel it should be periodontal ligament attachment because junctional epithelium does not extends to the root of the tooth and periodontal ligament exists in the root portion of the tooth.

Ans Nos. 1 & 2 are not specialized epithelium; 4 by definition is something else, so the only choice (& the correct ans remaining) is 3.