Enamel morphology after microabrasion with experimental compounds

Abstract

Background:Enamel microabrasion is an esthetic treatment for removing superficial stains or defects of enamel.Aim:This study evaluated the roughness after enamel microabrasion using experimental microabrasive systems.Materials and Methods:One hundred and ten samples (5 × 5 mm) were obtained from bovine incisors and divided into 11 groups (n = 10) in accordance with the treatment: Microabrasion using 6.6% hydrochloric acid (HCl) or 35% phosphoric acid (H3PO4) associated with aluminum oxide (AlO3) or pumice (Pum) with active application (using rubber cup coupled with a micro-motor of low rotation) or passive application (just placing the mixture on the enamel surface); just the use of acids in a passive application (negative control), and a group without treatment (positive control). Roughness analysis was performed before and after treatments. The statistical analysis used analysis of variance (PROC MIXED), Tukey-Kramer and Dunnet tests (P < 0.05). Representative specimens were evaluated using scanning electron microscopy (SEM).Results:There was no significant difference between the acids used (P = 0.0510) and the applications (P = 0.8989). All of the treated groups were statistically different from the positive control. When using passive application, the use of HCl + AlO3 resulted in higher roughness when compared with HCl + Pum. Additionally, this treatment was statistically different from the passive application of H3PO4 (negative control) (P < 0.05). However, SEM analysis showed that the treatment with AlO3 resulted in an enamel surface with a more polished aspect when compared with Pum.Conclusion:AlO3 may be a suitable particle for use in microabrasive systems.

Effect of Er:YAG laser irradiation on deciduous enamel roughness and bacterial adhesion: An in vitro study

“…It is important to mention that in addition to laser irradiation, other factors can contribute to increase the roughness of enamel, some are inherent to the patient, such as dietary habits (Bollen et al, ), frequency of oral hygiene, the technique and products use for tooth brushing (abrasive dentifrices and type of toothbrush bristles) (Kumar et al, ), and medication consumption (Valinoti, da Silva Pierro, Da Silva, & Maia, ). Furthermore, some dental procedures can also produce changes in the enamel roughness, including acid and laser etching (Alcantara‐Galeana et al, ), microabrasion (Pini et al, ), among others.…”

Characterization of Fluorotic Enamel After Microabrasion and Desensitizing Agent

“…Currently the microabrasion of the enamel has been accepted because it is considered a conservative and non-restorative technique that improves the appearance of the teeth that present alteration of color and defects in its surface. There are mainly two different types of techniques for performing microabrasion; the chemical technique based on 18% HCl, which was the first proposal and is still being manufactured and is used by a large number of specialists because of its low cost and to the satisfactory clinical results in the removal of superficial enamel stains, although some authors discuss their high toxicity (4)(5). The second technique of microabrasion is the chemical-mechanical, which has undergone several modifications, using different types and concentrations of acids, although the most used today is based on 6% hydrochloric acid and associated with particles of silicon carbide, finding different products with this formulation (11)(12).…”

“…To our knowledge, it is the first time to evaluate the morphological and microhardness of the surface of the enamel with moderate fluorosis after the application of different microabrasion techniques and a desensitizing agent. Most of the published works of this type have evaluated bovine teeth or human teeth free of fluorosis (3)(4)9).…”

“…With the technique, a sub layer of enamel with normal characteristics is exposed. As the enamel wear is minimal, microabrasion is considered a safe and conservative procedure, when correctly prescribed (4). Scientific studies on microabrasion have been carried out for several years in order to know its effects on the enamel.…”

Desgaste del esmalte por diferentes tratamientos químicos y mecánicos

“…La técnica tradicional de microabrasión utiliza una combinación de un agente de ácido clorhídrico y un elemento abrasivo. Se ha descrito como una técnica no restaurativa, conservadora y segura 11 , su objetivo principal es la remoción de cambios de color, pigmentaciones o alteraciones en la superficie dental con una pérdida mínima de esmalte de hasta 250 µm 5 . Otras formas de microabrasión descritas han sido la utilización de fresas de grano fino y ultrafino, arenado, puntas sónicas, entre otras 9,12 .…”