Ultrasound device as a minimally invasive approach for caries dentin removal
Abstract The aim of this study was to evaluate the efficacy of an ultrasound device and the dentin surface morphology after removal of the caries dentin lesions by removal rate and scanning electron microscopy (SEM). The Knoop hardness test on the bovine dentin blocks (n = 20, 4x4x2mm) was performed to standardize the samples and only those with 38 ± 2 KHN were included. The dentin blocks were submitted to induction of artificial caries lesions, using the bacterial model. Strains of Streptococcus mutans and Lactobacillus acidophilus were used for 7 days. The caries dentin lesion was removed for 1 min, according to two methods: G1 - carbide bur under low-speed rotation (control group) and G2 - ultrasound device under refrigeration. For the removal rate, the samples were weighed 3 times: T0 (before induction), T1 (after induction) and T2 (after removal). Morphology evaluation of the residual dentin surface was performed by SEM. Data normality was verified by Shapiro-Wilk test (p ≥ 0.240). T-test for independent samples was applied to evaluate the removal rate. A significance level of 5% was adopted. G2 provided lower removal rate than G1 (G1: 3.68 mg and G2 = 2.26 mg). SEM images showed different morphological characteristics between the groups. G2 showed absent of smear layer, while G1 showed a visible smear layer over the surface. We concluded that ultrasound device provides minimally invasive removal with residual dentin exhibiting open dentin tubules and no smear layer formation and no bacteria, which infer the removal of the infected tissue.
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Fundação Odontológica de Ribeirão Preto
2022
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oai:scielo:S0103-644020220001000572022-02-25Ultrasound device as a minimally invasive approach for caries dentin removalBesegato,João FelipeMelo,Priscila Borges Gobbo deBernardi,Adilson César de AbreuBagnato,Vanderlei SalvadorRastelli,Alessandra Nara de Souza Dental caries ultrasound energy caries removal scanning electron microscopy minimally invasive dentistry Abstract The aim of this study was to evaluate the efficacy of an ultrasound device and the dentin surface morphology after removal of the caries dentin lesions by removal rate and scanning electron microscopy (SEM). The Knoop hardness test on the bovine dentin blocks (n = 20, 4x4x2mm) was performed to standardize the samples and only those with 38 ± 2 KHN were included. The dentin blocks were submitted to induction of artificial caries lesions, using the bacterial model. Strains of Streptococcus mutans and Lactobacillus acidophilus were used for 7 days. The caries dentin lesion was removed for 1 min, according to two methods: G1 - carbide bur under low-speed rotation (control group) and G2 - ultrasound device under refrigeration. For the removal rate, the samples were weighed 3 times: T0 (before induction), T1 (after induction) and T2 (after removal). Morphology evaluation of the residual dentin surface was performed by SEM. Data normality was verified by Shapiro-Wilk test (p ≥ 0.240). T-test for independent samples was applied to evaluate the removal rate. A significance level of 5% was adopted. G2 provided lower removal rate than G1 (G1: 3.68 mg and G2 = 2.26 mg). SEM images showed different morphological characteristics between the groups. G2 showed absent of smear layer, while G1 showed a visible smear layer over the surface. We concluded that ultrasound device provides minimally invasive removal with residual dentin exhibiting open dentin tubules and no smear layer formation and no bacteria, which infer the removal of the infected tissue.info:eu-repo/semantics/openAccessFundação Odontológica de Ribeirão PretoBrazilian Dental Journal v.33 n.1 20222022-02-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402022000100057en10.1590/0103-6440202203878 |
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Besegato,João Felipe Melo,Priscila Borges Gobbo de Bernardi,Adilson César de Abreu Bagnato,Vanderlei Salvador Rastelli,Alessandra Nara de Souza |
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Besegato,João Felipe Melo,Priscila Borges Gobbo de Bernardi,Adilson César de Abreu Bagnato,Vanderlei Salvador Rastelli,Alessandra Nara de Souza Ultrasound device as a minimally invasive approach for caries dentin removal |
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Besegato,João Felipe Melo,Priscila Borges Gobbo de Bernardi,Adilson César de Abreu Bagnato,Vanderlei Salvador Rastelli,Alessandra Nara de Souza |
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Besegato,João Felipe |
title |
Ultrasound device as a minimally invasive approach for caries dentin removal |
title_short |
Ultrasound device as a minimally invasive approach for caries dentin removal |
title_full |
Ultrasound device as a minimally invasive approach for caries dentin removal |
title_fullStr |
Ultrasound device as a minimally invasive approach for caries dentin removal |
title_full_unstemmed |
Ultrasound device as a minimally invasive approach for caries dentin removal |
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ultrasound device as a minimally invasive approach for caries dentin removal |
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Abstract The aim of this study was to evaluate the efficacy of an ultrasound device and the dentin surface morphology after removal of the caries dentin lesions by removal rate and scanning electron microscopy (SEM). The Knoop hardness test on the bovine dentin blocks (n = 20, 4x4x2mm) was performed to standardize the samples and only those with 38 ± 2 KHN were included. The dentin blocks were submitted to induction of artificial caries lesions, using the bacterial model. Strains of Streptococcus mutans and Lactobacillus acidophilus were used for 7 days. The caries dentin lesion was removed for 1 min, according to two methods: G1 - carbide bur under low-speed rotation (control group) and G2 - ultrasound device under refrigeration. For the removal rate, the samples were weighed 3 times: T0 (before induction), T1 (after induction) and T2 (after removal). Morphology evaluation of the residual dentin surface was performed by SEM. Data normality was verified by Shapiro-Wilk test (p ≥ 0.240). T-test for independent samples was applied to evaluate the removal rate. A significance level of 5% was adopted. G2 provided lower removal rate than G1 (G1: 3.68 mg and G2 = 2.26 mg). SEM images showed different morphological characteristics between the groups. G2 showed absent of smear layer, while G1 showed a visible smear layer over the surface. We concluded that ultrasound device provides minimally invasive removal with residual dentin exhibiting open dentin tubules and no smear layer formation and no bacteria, which infer the removal of the infected tissue. |
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Fundação Odontológica de Ribeirão Preto |
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2022 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402022000100057 |
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