Effect of Er,Cr:YSGG laser irradiation and self-etch adhesive systems on hypermineralized dentin: a bond strength evaluation

Neves, Tamíris da Costa; Leandrin, Thaís Piragine; Wajngarten, Danielle; Besegato, João Felipe; Campos, Edson Alves de

doi:10.1088/1555-6611/ab8a51

Cited by 1 publication

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References 39 publications

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“…In the literature, it has been concluded that erbium laserirradiated enamel shows morphological and chemical changes resulting from micro-explosions during laser ablation. 17,18 Zones of melting, crystallization, and microcracks have been reported in previous studies. However, these alternations of the irradiated enamel surface should be minimal if adequate water cooling is used.…”

Section: Discussionsupporting

confidence: 65%

“…31 A higher gap formation (%) mean observed for the W group could be due to an increase in acid resistance of Er,Cr:YSGG laser irradiated dentin, as concluded in earlier studies. 17,18 This alternation in the acid resistance property is expected to negatively affect resin infiltration into the irradiated dentin. 33 The adhesive used in the current study has an ultra-mild acidity (pH of 2.7), which has a weak etching effect on the acidic functional monomer.…”

Section: Discussionmentioning

confidence: 99%

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Effect of Erbium, Chromium-doped: Yttrium, Scandium, Gallium and Garnet Laser Tooth Preparation on Gap Formation of Universal Adhesive Bonded to Enamel and Dentin: A Micro-CT and SEM Study

AlQussier

Awliya

2022

J Lasers Med Sci

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Introduction: The presence of gaps at the bonding interface of resin composite restorations is known to have an impact on restoration longevity. This study aimed to evaluate the effect of erbium, chromium-doped yttrium, scandium, gallium, and garnet (Er, Cr:YSGG) laser irradiation on gap formation at the tooth–resin interface and to compare the reliability of micro-computed tomography (µCT) and scanning electron microscopy (SEM) scans for gap formation assessment. Methods: Thirty standardized non-retentive class V cavities were prepared on sound human premolars using either an Er,Cr:YSGG laser or a round carbide bur (n=15 for each). A universal adhesive and A nano-filled resin composite were applied in accordance with the manufacturer’s recommendations. After water storage for 24 hours at 37°C, the teeth were subjected to thermocycling. Gap formation assessments were performed by µCT (Skyscan 1173 µCT, Brucker, Belgium) and SEM (JEOL JSM-6610LV, Japan), and SPSS version 24.0 (IBM Inc., Chicago, USA) was used to analyze the data at P value<0.05. Descriptive statistics were used to describe the gap formation percentages. To compare the impact of both preparation and assessment methods, a non-parametric Mann–Whitney U test was used. Results: In enamel, similar gap formation values were detected for the two preparation methods (bur and laser). However, the laser-prepared group showed higher gap formation values in dentin. Additionally, higher gap formation values were reported for both preparation methods when µCT was used for assessment. Conclusion: Cavity preparation using a Waterlase laser led to higher gap formation percentages at the dentin–resin interface. In addition, SEM assessment is more reliable for assessing the tooth–resin interface.

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Section: Discussionsupporting

confidence: 65%