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Quantitative analysis of dental enamel removal during a microabrasion technique
Ramalho, Karen Müller; Aranha, Ana Cecília Correa; Eduardo, Carlos de Paula; Rocha, Rodney Garcia; Bello-Silva, Marina Stella; Lampert, Friedrich; Esteves-Oliveira, Marcella.
  • Ramalho, Karen Müller; Ibirapuera University. School of Dentistry. São Paulo. BR
  • Aranha, Ana Cecília Correa; University of São Paulo. School of Dentistry. Department of Restorative Dentistry. São Paulo. BR
  • Eduardo, Carlos de Paula; University of São Paulo. School of Dentistry. Department of Restorative Dentistry. São Paulo. BR
  • Rocha, Rodney Garcia; University of São Paulo. School of Dentistry. Department of Stomatology. São Paulo. BR
  • Bello-Silva, Marina Stella; Nove de Julho University. School of Dentistry. Department of Stomatology. São Paulo. BR
  • Lampert, Friedrich; RWTH Aachen University. Department of Operative Dentistry, Periodontology and Preventive Dentistry. Aachen. DE
  • Esteves-Oliveira, Marcella; RWTH Aachen University. Department of Operative Dentistry, Periodontology and Preventive Dentistry. Aachen. DE
Clin. lab. res. dent ; 20(3): 181-189, jul.- set. 2014. ilus, tab, graf
Article in English | LILACS | ID: lil-730185
RESUMO

Objetivo:

Quantificar, por meio de perfi lometria, a profundidade de esmalte dental removido durante o emprego de uma técnica de microabrasão utilizando-se ácido clorídrico e abrasão manual com espátula plástica.

Método:

Trinta e seis espécimes obtidos de terceiros molares humanos foram polidos, para obtenção de superfícies planas, e divididos em 3 grupos (n = 12) de acordo com os diferentes tratamentos recebidos tratamento placebo com água deionizada, como controle negativo (CG); microabrasão com ácido clorídrico a 6.6, OpalustreTM (G1); e ácido clorídrico a 6, Whiteness RMTM (G2). A microabrasão foi realizada, de forma padronizada, submetendo os espécimes a 4 ciclos de 10 segundos cada e abrasão manual utilizando-se uma espátula plástica com carga de 200 g. A perda da superfície de esmalte foi medida após cada um dos ciclos de tratamento por meio de perfi lômetro de contato.

Resultados:

Após os primeiros 10 segundos de abrasão, já foi encontrada perda de esmalte em ambos os grupos tratados (G1 e G2). Nos grupos G1 e G2, a cada ciclo de 10 segundos, foi observado um aumento signifi cativo na perda de esmalte (p ≤0.05). Após 4 abrasões de 10 segundos cada, as médias de perda de esmalte nos grupos tratados foram 46.04 μm (G1) e 54.65 μm (G2). Foi encontrada uma diferença signifi cativa entre G1 e G2 com relação à perda de esmalte de microabrasão em esmalte dental com segurança, utilizando-se ácido clorídrico e abrasão manual com espátula plástica.
ABSTRACT

Objective:

To quantify, by means of profi lometry, the removal of dental enamel during the use of a microabrasion technique involving the use of hydrochloric acid and manual abrasion with a plastic spatula.

Method:

Thirty six specimens obtained from human third molars were polished to obtain fl at surfaces and divided into 3 groups (n = 12) according to the different treatments received A placebo treatment with deionized water as a negative control (CG); microabrasion with 6.6% hydrochloric acid, OpalustreTM (G1); and microabrasion with 6% hydrochloric acid, Whiteness RMTM (G2). The microabrasion was performed in a standardized manner by submitting the specimens to 4 cycles of 10 seconds each and manual abrasion using a plastic spatula (200 g load). The loss of enamel surface was measured after each cycle of treatment by contact profi lometry.

Results:

Enamel loss was already observed after the fi rst 10 seconds of abrasion with hydrochloric acid in both treated groups (G1 and G2). After 4 abrasions of 10 seconds each, the average fi nal enamel losses in the treated groups were 46.04 μm (G1) and 54.65 μm (G2). In the G1 and G2 groups, a signifi cant increase in enamel wear was detected in each cycle in comparison to the control group (p ≤ 0.05). A signifi cant difference in enamel loss between G1 and G2 was found after 30 and 40 seconds of microabrasion. Relevance The results of this study provide objective data for safely performing the microabrasion technique on dental enamel using hydrochloric acid and manual abrasion using a plastic spatula.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Enamel Microabrasion / Dental Enamel / Hydrochloric Acid Type of study: Controlled clinical trial / Practice guideline Language: English Journal: Clin. lab. res. dent Journal subject: Dentistry Year: 2014 Type: Article Affiliation country: Brazil / Germany Institution/Affiliation country: Ibirapuera University/BR / Nove de Julho University/BR / RWTH Aachen University/DE / University of São Paulo/BR

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Full text: Available Index: LILACS (Americas) Main subject: Enamel Microabrasion / Dental Enamel / Hydrochloric Acid Type of study: Controlled clinical trial / Practice guideline Language: English Journal: Clin. lab. res. dent Journal subject: Dentistry Year: 2014 Type: Article Affiliation country: Brazil / Germany Institution/Affiliation country: Ibirapuera University/BR / Nove de Julho University/BR / RWTH Aachen University/DE / University of São Paulo/BR