Effect of pretest storage conditions of extracted teeth on their dentin bond strengths

Mobarak, Enas H.; El-Badrawy, Wafa; Pashley, David H.; Jamjoom, Hana

doi:10.1016/s0022-3913(10)60098-4

Cited by 39 publications

(26 citation statements)

References 28 publications

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“…[49] recommended use of frozen teeth at −20 o C or storage of teeth in 1% chloramine at 4 o C. Before using any teeth that were preserved in dry state, rehydration with distilled water for two weeks is recommended. [50]…”

Section: Variables Influencing Micro-bond Strength Test Resultsmentioning

confidence: 99%

Validity of bond strength tests: A critical review-Part II

et al. 2014

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Background:Macro-bond strength tests resulted in cohesive failures and overestimation of bond strengths. To reduce the flaws, micro-bond strength tests were introduced. They are the most commonly used bond-strength tests.Objective:Thus the objective of this review is to critically review the reliability of micro-bond strength tests used to evaluate resin-tooth interface.Data Collection:Relevant articles published between January 1994 and July 2013 were collected from Pubmed database, Google scholar and hand searched journals of Conservative Dentistry, Endodontics and Dental materials.Data Synthesis:Variables that influence the test outcome are categorized into substrate related factors, factors related to specimen properties, specimen preparation and test methodology. Impact of these variables on the test outcome is critically analyzed.Conclusion:Micro-bond tests are more reliable than macro-bond tests. However, no standard format exists for reporting the bond strength tests which could lead to misinterpretation of the data and bonding abilities of adhesives.

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Section: Variables Influencing Micro-bond Strength Test Resultsmentioning

confidence: 99%

Validity of bond strength tests: A critical review-Part II

et al. 2014

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“…Another limitation of this in vitro study is the use of storage solutions of thymol and chloramine T to store and disinfect teeth before manipulations. Although some study reported no significant effect on bond strength and micro microleakage leakage when using thymol and chloramine T [29][30][31] it has also been suggested that thymol, being a phenolic compound, may inhibit the polymerization of methyl methacrylate [40] and therefore may have influenced the results. Clinical limitations may also arise from a thick adhesive layer such as wear of the adhesive overtime and diagnostic issues if the particles are not radiopaque [11].…”

Section: Discussionmentioning

confidence: 99%

“…Teeth were first stored in a solution of 0.2% thymol until needed and subsequently cleaned and kept at 4 o C in a solution of 0.5% chloramine T for at least 24 h. Thymol and chloramine T were used in this study to store and disinfect teeth with minimal effect on tooth structures. These two storage media have been reported in the literature to have no significant effect on bond strength and microleakage [29][30][31]. Teeth were removed form the chloramine T and kept in artificial saliva throughout the study.…”

Section: Methodsmentioning

confidence: 99%

Effect of adhesive filler content on marginal adaptation of class II composite resin restorations

St-Pierre¹,

Chen²,

Qian³

et al. 2017

J Oper Esthet Dent.

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Introduction: Adhesive formulation may affect the marginal adaptation of composite resin restorations. Objectives: To evaluate the effect of adhesive filler content on the gingival marginal adaptation of Class II composite resin restorations. Materials and methods: Class II cavity preparations were made in ninety intact extracted human molars. Specimens were randomized and equally distributed in 6 groups (n = 15). Preparations were etched and All-Bond 3 primers A + B (Bisco, Schaumburg, IL/USA) were applied. One group received All-Bond 3 adhesive/resin (50 wt% filler) and the other five groups received the same resin composition but with filler contents of 0, 10, 20, 30 and 40 wt%. Teeth were restored with Filtek Supreme Ultra (3M, St-Paul, MN/USA), finished and stored in artificial saliva (37°C/24 h) before replicas were made for FE-SEM observation (200X). Quantitative margin analysis was performed based on a four criteria: MQ1 (continuous margin), MQ2 (marginal irregularities, porosities, roughness, no gap), MQ3 (small gaps of up to 2 microns) and MQ4 (severe gaps). Data were analyzed with a one-way ANOVA based on ranked data followed by the post-hoc Bonferroni test. Results: There was no statistically significant difference in "continuous margin" observed among the six filler contents (p = 0.0886). However, significantly less severe gaps were obtained with filler levels of 30 wt% and 40 wt% compared to 0 wt% (p = 0.0159). A noticeable but non-significant difference was observed for the unfilled adhesive (0 wt%), which showed the lowest mean % for continuous margins and the highest for severe gaps. Conclusion: Filler addition to adhesive appears to improve the marginal adaptation. Filler contents of 30 wt% and 40 wt% significantly reduced the occurrence of severe gaps compared to 0 wt%.

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“…8 The collected teeth were stored in phosphate buffer saline containing 0.2% sodium azide at 48C for not more than two weeks until being used. 9 The study was accomplished in accord with local human participants' oversight committee guidelines.…”

Section: Specimen Preparationmentioning

confidence: 99%