Abstract
Aim: To evaluate the comparative efficacy of Polymer bur (Smartprep) and Conventional burs (Carbide bur & Diamond Points) in selective Dentin caries removal. Materials and method: 15 freshly extracted carious human premolars and molars were selected for this study. These teeth were split in the center of carious lesion, in order to obtain two corresponding half. Thus 30 samples were prepared in this way. These were randomly divided in to 3 groups of 10 samples each. Group 1: The carious portion of these samples was excavated with the help of polymer bur Smartprep (SS White). Group 3: Prepared with Tungsten carbide round bur (No. 018). Group 3: Prepared with the help of Diamond points (No. 018). The period of time involved in this process is measured. After excavation of all carious lesions, a longitudinal section from mid most part of lesion was obtain with the help of diamond disc at slow speed. After staining with caries detector dye “Seek”, the sections were subjected to histological evaluation under stereomicro-scope. The thickness of remaining caries is measured in more or less than 1 mm. Results: The difference in grading of remaining carious dentin between Polymer bur and Conventional burs were statistically non- significant, but Polymer bur taken more time in comparison to Conventional burs. Conclusion: Smartprep bur is more conservative in selectively dentin caries removal than Conventional burs but same time it is more time consuming than Conventional burs.
Highlights
The traditional treatment for carious lesions was outlined nearly “a century ago by G.V
The results of this study shows that difference in grading of remaining carious dentin between Smartprep and Conventional burs (Diamond and Carbide) after total excavation of samples were statistically insignificant
The traditional approach is not fundamentally conservative because it often results in cavity preparation that extends beyond the infected outer carious dentin layer into the non infected or lightly infected inner carious dentin or normal dentin [8]
Summary
The traditional treatment for carious lesions was outlined nearly “a century ago by G.V. Black”. This treatment consists of the removal of the carious lesion, including all demineralized dentin and unsupported enamel. The preparations are extended to include pits and fissures that may at some future date may become carious (extension for prevention). Cavity preparation, according to Sir G.V. Black, requires the removal of tooth structure to prepare a dictated outline form as well as an internal form that provide for mechanical retention of the restoration
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