Clinical trial NCT01523509: Use of Radiographic Contrast to Detect Dental Caries
Official title: The Use of Radiographic Contrast to Differentiate Cavitated From Non-cavitated Dental Caries
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE1
Conditions: Dental Caries
Keywords: Dental Caries
Radiography, Dental
Contrast media
Tooth
Lead sponsor: Creighton University
Sponsor class: OTHER
First posted: 2012-02-01
Enrollment: 33
Sex: ALL
Minimum age (years): 19
Maximum age (years): 99
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: DIAGNOSTIC

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.

Hypothesis: Use of radiographic contrast on teeth will increase the accuracy of detection of early cavitation from 58% to 90%.

Detailed description: Tooth sites will be recorded by 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 know 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.

Eligibility criteria: Inclusion Criteria:

* must have a minimum of 2 adjacent teeth so that interproximal surfaces of interest are in contact and hidden from direct visual inspection.
* the occlusal plane should be normal so that the interproximal contact regions are normal.
* English or Spanish speaker.

Exclusion Criteria:

* pregnant women
* a person who has participated in a similar study involving dental radiography within the last 12 months.
* fillings must not be present in the regions of interest.

Primary outcomes:
measure: Presence of a radiopacity below the tooth surface at a site likely to develop tooth decay.
timeFrame: Immediately after application of contrast agent.
Secondary outcomes:
Other outcomes:
Locations:
city: Omaha
country: United States
facility: Creighton University School of Dentistry
state: Nebraska
Study officials:
affiliation: Creighton University
name: Douglas K Benn, DDS PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Benn DK, Cooper RL, Nunn ME, Edwards SE, Rocha-Sanchez SM. A radiographic method for distinguishing noncavitated from cavitated proximal carious lesions: A proof of concept clinical trial. Oral Surg Oral Med Oral Pathol Oral Radiol. 2021 Dec;132(6):715-726. doi: 10.1016/j.oooo.2021.02.014. Epub 2021 Feb 23.