Clinical Trial: Radiographic Contrast To Differentiate Cavitated From Non-cavitated Tooth Decay

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional

Official Title: Radiographic Contrast To Differentiate Cavitated From Non-cavitated Tooth Decay

Brief Summary: The proposed test is intended to enable dentists to differentiate between cavitated and non-cavitated tooth decay in the areas where teeth are in contact (interproximal surfaces). In these areas, dentists cannot visually inspect for caries, and currently bitewing X-rays (BWs) only correctly detect the presence of enamel decay 15-25% of the time. This low sensitivity can lead to late treatment resulting in unnecessarily large fillings, crowns, pain, root canals, and possible later loss of teeth.

Detailed Summary: Tooth sites will be recorded by both tooth number, type of surface (mesial, distal, occlusal), cavitated, non-cavitated, healthy. Radiographs will similarly be scored. Although contrast agents are classified as drugs this is not a study of drug properties or effect on cells since the properties of the agent are already well known and its safety record well established. This study will be recording the radiopacity of the contrast agent on healthy tooth surfaces, non-cavitated tooth surfaces and cavitated tooth surfaces. The outcome for each surface type will be presence or absence of a radiopacity on a radiograph which will be made at the one and only visit for each study subject. The radiograph contains the data from the intervention (placement of contrast agent) and the outcome will be assessed some weeks later after the completion of the data collection.
Sponsor: Creighton University

Current Primary Outcome: Number of cavitated versus non-cavitated caries lesions in 116 tooth surfaces. [ Time Frame: Immediately after application of sodium iodide ]

The PI will perform the clinical application of the sodium iodide and radiograph the subject. A control radiograph will be taken of tooth crowns before the application of the contrast. Immediately after the contrast application another radiograph will be exposed. If caries is present a lucency will be seen in the control The test radiograph will show either contrast on the tooth surface (non-cavitated) or below the surface (caviiatetd). Rubber impressions will be made of the tooth surfaces and scanned with a laser to provide a 3D replica which will be the gold standard for presence or absence of cavitation. At a later date 3 independent dentists will be provided with blinded radiographs in a randomized order to report the presence or absence of cavitated cries lesions.


Original Primary Outcome: Same as current

Current Secondary Outcome:

Original Secondary Outcome:

Information By: Creighton University

Dates:
Date Received: February 2, 2015
Date Started: August 2015
Date Completion:
Last Updated: June 15, 2016
Last Verified: June 2016