Introducing Dr. Amir from Egypt

I am glad to introduce to you all Dr. Amir from egypt who will serve you with his valuable experience and knowledge.He joins RxMcq's as a co author to me.

Name>Dr. Amir Elmoamnein Abdelaty Awad

Age.33
Address. Arab republic of egypt almansoura dakahlia

Occupation.endodontist

Certificates.
1-bachelor of oral and dental surgery 2000 almansoura unveristy

2-diplomate in endodontic 2005

Thanx Dr. Amir for joining

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66.Files are used in endodontic preperation to:

1.clean 2.shape

3.improve access 4.facilitate obturation

a.all b.1,2,3 c.1,2,4 d.2,3,4

ANS : c

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65. which of the following represents the most significant advantage of using acid etch techinque :

1.microleakage 2.setting shrinkage of restorative material

3.coefficient of thermal expansion of restorative material

4.reduced porosity of restoration


ANS. 1.
Microleakage

in this procedure the tooth surface enamel is treated for about for about one minute with acid etch solution or gel 30-50%phosphoric acid.

CONTRIBUTED BY: Dr. AMIR FROM EGYPT

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RxDENTISTRY
LOVEHUES
DENTAL MATRIX