The different effects of preheating and heat treatment on the surface microhardness of nanohybrid resin composite

Septyarini, Brelian Elok; Dwiandhono, Irfan; Imam, Dian Noviyanti Agus

doi:10.20473/j.djmkg.v53.i1.p6-9

Cited by 5 publications

(4 citation statements)

References 24 publications

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“…The provided table (Tables 3, 4) summarizes various studies on microhardness and fracture toughness. Out of the total 29 studies included, 16 demonstrate an increase in microhardness alone [3,8,9,12,13,15,16,17,18,19,21,22,23,25,27,28], while one shows an increase in fracture toughness alone [20]. Additionally, three studies reveal no statistically significant difference in microhardness values [5,10,30].…”

Section: Resultsmentioning

confidence: 97%

Examining the Impact of Preheating on the Fracture Toughness and Microhardness of Composite Resin: A Systematic Review

Bhopatkar,

Ikhar,

Chandak

et al. 2023

Cureus

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The objective of this comprehensive study was to systematically evaluate the effects of preheating on two critical mechanical properties, microhardness and fracture toughness, in resin composite materials. The overarching goal was to provide valuable insights into the potential benefits and limitations of this technique for enhancing the overall mechanical performance of such materials. To achieve this, an extensive and systematic electronic search was conducted across multiple reputable databases, including MEDLINE/PubMed, SCOPUS, ProQuest, SpringerLink, Web of Science, ScienceDirect, and Google Scholar, with data collection extending until June 2023. This rigorous search process resulted in the identification of 29 pertinent articles, which were subjected to a thorough risk of bias assessment employing the Quality Assessment Tool For In Vitro Studies (QUIN).The findings of this comprehensive investigation revealed several noteworthy trends. First, concerning microhardness, all the studies consistently demonstrated a positive effect of preheating on this mechanical property. This uniformity in results corroborates the initial hypothesis that preheating indeed enhances microhardness in resin composite materials. Second, with respect to fracture toughness, a majority of the studies provided evidence supporting the notion that preheating has a favorable influence on this particular mechanical property. This alignment of outcomes suggests that preheating can be a beneficial technique for improving fracture toughness in resin composites. However, it is essential to note that there were a few exceptions within the collected data, where preheating appeared to lead to a decrease in fracture toughness. Additionally, one study reported no statistically significant effect on fracture toughness. These deviations from the general trend highlight the complexity of the relationship between preheating and fracture toughness, indicating that other factors or material-specific nuances may come into play.In conclusion, the results of this study indicate that preheating resin composites can improve microhardness and fracture toughness, offering potential benefits for dental restorations. Yet, conflicting data warrants further research to uncover the reasons behind these discrepancies. Future studies should also investigate preheating's broader impact on composite resin materials to gain a comprehensive understanding of its applications and limitations in the field.

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Section: Resultsmentioning

confidence: 97%

Examining the Impact of Preheating on the Fracture Toughness and Microhardness of Composite Resin: A Systematic Review

Bhopatkar,

Ikhar,

Chandak

et al. 2023

Cureus

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“…In aesthetic dental treatment, this restoration has many advantages over other treatments such as ceramic veneers and orthodontic treatments: they are more compatible with antagonistic teeth than ceramic materials, and if there is a fracture, it will be easier to repair because it does not require additional time and cost. [15][16][17] However, composite resins also have several disadvantages, including shrinkage during polymerisation, a low wear resistance, poor long-term durability, postoperative sensitivity and (in clinical use) direct composite resins have the potential to become secondary caries and fracture. 18,19 Digital smile design is a digital aesthetic planning tool in dentistry that is used to evaluate the aesthetic relationship between the teeth, gingiva, smile and face.…”

Section: Discussionmentioning

confidence: 99%

The aesthetic management of a midline diastema with direct composite using digital smile design, putty index and button shade technique: A case report

et al. 2022

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Background: A diastema is the distance or space between two or more adjacent teeth. This abnormality can interfere with the aesthetics of a patient, and 97% of diastemas occur in the maxilla. Various treatments can be performed for diastema closure in patients, one of which is composite resin restoration. Purpose: To explain the aesthetic procedure for diastema closure. Case: A 20-year-old female patient presented with complaints of the distance between her anterior teeth (Class I Angle occlusion with normal overjet and overbite). The labial frenum associated with the diastema was normal in size and position. The patient was not amenable to invasive procedures. Case Management: Management of midline diastema closure using the direct composite technique with DSD, the putty index method and button shade technique. Conclusion: The closure of a midline diastema with direct composite using DSD, the putty index method and button shade technique provides aesthetic results with less cost and time due to the absence of laboratory procedures.

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“…8 Preheating is a preparation method of composite resin which can improve composite physical and mechanical properties, with the increase in temperature, the polymers in composite turns more fluid making material more flowable, 9 thus reducing stress in the extrusion from syringe giving a better reaction resulting better cross link and polymerization that will lead to increase in mechanical strength and wear resistance. 10 The heating of composite resin is recommended by using Composite Heating Conditioner Micerium S.p.A Heater (Ena Heat, Micerium S.p.A., Avegno GE, Italy) which is designed with two temperature options 39°C and 55°C, with 39°C usually used to heat composite for restoration and 55°C for cementation. 11 Previous research by Valinoti, showed that immersion of nano filed composite resin in Claritin medicine with acidic pH 2.57 with pH-cycling method 4 times a day for 12 days show significant increase in nano filled composite resin surface roughness.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pineapple Juice (Ananas comosus) on Surface Roughness of Preheated and Non-Preheated Nanohybrid Composite Resins

Kamadi,

Liliany

2022

J Indones Dent Assoc

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Introduction: Nanohybrid composite resins is a type of composite consisting 2 different filler sizes, where one filler ranges in nanoparticles 0.01-0.05µm. Pineapple juice (Ananas comosus) is a widely consumed drink by Indonesian with pH range 3.5-4.6. Surface roughness may be affected by extrinsic factors such as low pH from pineapple juice. Rough surface can cause bacterial adhesion and plaque accumulation on restorative material which cause secondary caries, gingivitis and staining. Preheating is a preparation method of composite which improve composite physical and mechanical properties. Objective: To analyze the difference in surface roughness of preheated and non-preheated nanohybrid composite resins after immersion in pineapple juice. Methods: This research was a laboratory experimental with post-test and control group design. Thirty-three cylindrical sample of nanohybrid composite resin Filtek Z250 XT A2 shade (3M ESPE) (10 mm x 2 mm) were divided into 3 groups: Preheated, Non-preheated and control. Preheated and non-preheated group were immersed in 10 mL pineapple juice for 2 hours for 12 days, control group were immersed in 10 mL distilled water for 24 hours for 12 days. Surface roughness was measured after immersion using surface roughness tester Taylor Hobson, Subtonic S-100 Series-S128) and analyzed using one way ANOVA followed by Post Hoc Tukey. Results: Statistical analyze with one way ANOVA test indicates significant differences between surface roughness in 3 groups with p = 0.034, average surface roughness of pre-heated group was calculated in 0.73 µm, non-preheated group in 0.81 µm and control group in 0.55µm. Tukey’s Post hoc with p = 0.03 shows significant difference in surface of non-preheated composite resin with control group. Conclusion: Pineapple juice increases surface roughness of nanohybrid composite resins after 2 hours immersion for 12 days in comparison with control group.

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The different effects of preheating and heat treatment on the surface microhardness of nanohybrid resin composite

Cited by 5 publications

References 24 publications

Examining the Impact of Preheating on the Fracture Toughness and Microhardness of Composite Resin: A Systematic Review

Examining the Impact of Preheating on the Fracture Toughness and Microhardness of Composite Resin: A Systematic Review

The aesthetic management of a midline diastema with direct composite using digital smile design, putty index and button shade technique: A case report

Effect of Pineapple Juice (Ananas comosus) on Surface Roughness of Preheated and Non-Preheated Nanohybrid Composite Resins

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