Abstract
Radiography plays an important role in detection of interproximal caries. The aim of study is to compare diagnostic ability of photo stimulable phosphor (PSP) with direct measurement using stereomicroscope in detecting proximal caries. Hundred proximal surfaces of 50 extracted human posterior teeth were radiographed with dental X-ray unit. The image receptors used was storage phosphor plate Vista scan (size 2), (time of exposure 0.4 s). Radiographs were interpreted and caries lesions were classified on a 4-point scale suggested by Abesi et al. The teeth were sectioned with diamond disc and were examined under a stereomicroscope with 20x magnification. Diagnostic accuracy of digital image is similar to that observed with stereomicroscope. The PSP plate digital X ray system can effectively be employed for detecting proximal caries as compared to direct observation by stereomicro-scope. Further study with more number of observer/evaluator and large sample size is recommended.
Highlights
50 extracted human posterior teeth were radiu ographed with dental X-ray unit
PSP plate digital X ray system can effectively o be employed for detecting proximal caries as c compared to direct observation by stereomicroscope
Histological examination of 100 detecting proximal caries we found that the ble.[2]
Summary
The study was carried out on 50 extracted human posterior teeth (100 dental surfaces) out of which 46 were carious teeth. The teeth were visually inspected for the presence or absence of caries on proximal surfaces. Exclusion criteria included those with extensive buccal or lingual caries and presence of fracture or anomalies. 1 to 100 (Figure 1A) were embedded in plaster of Paris from apex to cementoenamel junction, with their approximal surfaces in contact. The previously radiographed teeth were sectioned using a diamond disc mounted in a low speed saw in a mesio-distal direction adjacent to approximal lesions (Figure 2).
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