Friday, July 29, 2011

10 Questions and Answers About Dental Radiographic Interpretation

01.  What is the earliest radiographic sign of periapical disease of pulpal origin?
The earliest radiographic sign is widening of the periodontal ligament space around the apex of the tooth.
02 . What is the second most common radiographic sign of periapical disease of pulpal origin?
The second most common radiographic sign is loss of the lamina aura around the apex of the tooth.
03.    Describe the radiographic differences that allow one to distinguish among periapical abscess, granuloma, radicular (periapical) cyst, and an apical surgical scar.
One cannot distinguish among periapical abscess, granuloma, or radicular (periapical) cyst on radiographic grounds alone. All of these lesions are radiolucent with well-defined borders. Whereas an abscess may be expected to be less well corticated than a radicular cyst, this feature is not marked or constant enough to be of real utility. An apical surgical scar may be radiographically distinguishable from the other three lesions if there is radiographic evidence of surgery, such as a retrograde amalgam. Of course, a history should elicit the fact of surgery.
04.    How does the radiographic appearance of pulpal pathology that has extended to in volve the bone differ in primary posterior teeth from the picture commonly seen in perma nent posterior teeth?
In permanent teeth, widening of the periodontal ligament space is seen around the apex of the tooth. In primary teeth, by contrast, the infection presents as widening of the periodontal ligament space or an area of lucency in the furcation area.


05. Does any radiographic sign permit the diagnosis of a nonvital tooth?


It is frequently stated that tooth vitality cannot be determined by radiographs alone, but this is not so. The presence of a root canal filling in a tooth provides virtually conclusive proof of its nonvitality, as does the presence of a retrograde filling, usually amalgam.
06.  At times it may be difficult to distinguish between hypercementosis and condensing or sclerosing osteitis around the apex of a tooth. What radiographic feature permits a definitive diagnosis when one is confronted with this dilemma?
If hypercementosis is present, the periodontal ligament space is visible arou nd the added cementum; that is, the cementum is contained within and is surrounded by the periodontal ligament space. Condensing osteitis, by contrast, is situated outside the periodontal ligament space.
07.  What is the radiographic sign of an ankylosed tooth?
The radiographic sign of an ankylosed tooth is loss of the periodontal ligament space and lamina aura.
08.  What is the earliest radiographic sign of periodontal disease?
The earliest radiographic sign of periodontal disease is loss of density of the crestal cortex, which is best seen in the posterior regions. In the anterior part of the mouth, the alveolar crests lose their pointed appearance and become blunted. In the posterior areas, the alveolar crests usually meet the lamina aura at right angles. In the presence of periodontal disease, these angles become rounded.
09.    What is the earliest radiographic sign of furcation involvement due to periodontal disease? 
In periodontal disease, one may see the loss of a cortical plate, either the buccal or lingual plate, on an intraoral film. The plate may be lost so that the crest now occupies a position apical to the furcation. This appearance, however, does not permit a diagnosis of furcation involvement. Widening of the periodontal ligament space in the furcation area is the earliest radiographic sign of furcation involvement.
10 . What is the radiographic differential diagnosis of a radiolucency on the root of a peri odontally healthy tooth?
Internal resorption, external resorption, and superimposition are the most common causes. Note that the question refers to a periodontally healthy tooth. If bone loss has resulted in exposure of the root, caries and abrasion, among other potential possibilities, enter the picture.

1 comment:

  1. I'm short of words to express the goodness of God in my life. I was diagnosed of herpes simplex virus 4 years ago. Which was the worst time in my life,cos of my career and i'm just 28th. I became worried,distress,felt so rejected,dirty and pity. I started keeping in touch with many hospitals,tried many solutions,and consulted many medical practitioners to get ride of my HSV virus,none of the ativiral treatment could cure me .I started trying fruits and herbs, and with time became very interested in herbs for solutions,to get ride of my HSV. I thought my life was gonna end there, i became worried and couldn't sleep at night. That faithful Sunday morning, friend of mine crystal who visited me home came up with a good news with her HIV/ AIDS test result negative. I was shocked,but so happy to have seen that. I wouldn't believe if I haven't seen the result and that would have being my worst mistake in life. She told me it was the work of an herbalist in Africa,Dr.Abang. who prepared the HIV/AIDS cured and sent it to her husband through the DHL. I became very interest and went online to search for natural ways for my cure then I saw a testimony of a lady comments on how she was cured from cancer by the same herbalist, then,I quickly email him@
    Odeyabangherbalhome@gmail.com.its med.are very active with immune booster with no site effect.contact him for the solution to all your sickness. He cures all viruses and diseases
    Odeyabangherbalhome@gmail.com
    Is a God sent in my life....

    ReplyDelete

Share

+1 this blog

you might also like

Related Posts Plugin for WordPress, Blogger...