Evaluation of root roughness after using diamond tips, ultrasound tips, and hand curettes in human teeth, in vitro study

Dimas Renó de Lima, Juliana de Fátima Pedroso, Lilian Guimarães Alarça, Mariana Alcântara de Lima



Objective: This in vitro study aimed to compare the degree of root roughness in human teeth after using hand curettes, stainless steel, and diamond ultrasound tips. Material and Methods: The scaling was performed on the root surface of 36 human teeth previously standardized and randomly divided into three groups (n = 12). The roughness degree was measured with the aid of a rugosimeter, before and after the scaling, through readings perpendicular and parallel to the scaling direction. The statistical analysis comprised Wilcoxon and Kruskal-Wallis tests (p < 0.05). The qualitative and visual complementation of the results was performed by scanning electronic microscopy. Results: The scaling executed with hand curettes increased root roughness (before - Ra median = 0.1583 µm; after = 0.7783 µm; before - Rz median =1.667 µm; after = 7.350 µm). The degree of root roughness also increased when stainless steel ultrasound (before - Ra median = 0.1483 µm; after = 0.3933 µm; before- Rz median = 1.567 µm; after = 4.333 µm) and diamond tips were used (before - Ra median = 0.1800 µm; after = 2.457 µm; before - Rz median = 1.850 µm; after = 18.58 µm). Conclusion: The superficial roughness significantly increased in all groups.  The scaling with diamond tips promoted the greatest root roughness than hand curettes and ultrasound tips.


Keywords: Dental biofilm; Dental scaling; Periodontics; Superficial roughness.

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DOI: https://doi.org/10.14295/bds.2015.v18i4.1220