Micro-computed tomographic analysis of the marginal adaptation of a calcium silicate-based cement to radicular dentin after removal of three different intracanal medicaments - An in vitro study

The aim of the present in vitro study was to investigate the effects of 10% and 40% citric acid (CA) on the color of calcium silicate–based cements (CSCs) in comparison to the effects of common root canal irrigants. Samples of six CSCs (n = 6)—ProRoot MTA (Dentsply, Tulsa, OK, USA), Biodentine (Septodont, Saint-Maur-des-Fossés, France), MTA Plus (Avalon Biomed Inc, by Prevest Denpro Limited, Jammu, India), MTA Repair HP (Angelus, Londrina, PR, Brazil), Ortho MTA (BioMTA, Seoul, Korea), and Retro MTA (BioMTA, Seoul, Korea)—were immersed in 10% and 40% CA as well as 15% EDTA, 2% NaOCl, 2% CHX, and 0.9% NaCl for 15 min, 1 h, and 24 h. ΔE values, representing the difference between the final and baseline values of the color components, were then determined using a VITA Easyshade Compact 5.0 spectrophotometer. Naked-eye evaluation of the changes in color and structures of the materials was performed using our own scale. Upon immersion of the materials in both 10% and 40% CA, there were statistically significant differences between spectrophotometric color measurement results for all CSCs (P < 0.05). However, CA does not cause dark discoloration, observable with the naked eye, of any of the materials, such as NaOCl and CHX. Significant statistical differences were also found between all CSCs in terms of submersion duration (P < 0.05). CA, which could be an alternative to EDTA use, caused greater CSCs discoloration and changed some of their structures. Unless required by the therapeutic procedure, clinicians should pay attention to the fact that the irrigant may affect the CSCs discoloration and minimize the contact time of irrigant with CSCs.

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The effects of final irrigants on the push-out bond strength of two calcium silicate-based root canal sealers: an in vitro study.

European Oral Research ◽

10.26650/eor.2021922696 ◽

2021 ◽

Vol 0 (0) ◽

pp. 146-151

Author(s):

Davut Çelik ◽

Ayşe Özalp Koca ◽

Tuğba Koşar ◽

Tamer Taşdemir

Keyword(s):

Bond Strength ◽

Root Canal ◽

Calcium Silicate ◽

In Vitro Study ◽

Vitro Study ◽

Root Canal Sealers ◽

Push Out

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The effect of the maturation time of calcium silicate-based cement (Biodentine™) on resin bonding: an in vitro study

Applied Adhesion Science ◽

10.1186/s40563-019-0118-7 ◽

2019 ◽

Vol 7 (1) ◽

Cited By ~ 2

Author(s):

Hoang-Thai Ha

Keyword(s):

Calcium Silicate ◽

In Vitro Study ◽

Vitro Study ◽

Maturation Time ◽

Resin Bonding

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To Evaluate the Effect of Water Temperature and Duration of Immersion on the Marginal Accuracy and Microhardness of Provisional Restoration: An In Vitro Study

Dental Journal of Advance Studies ◽

10.1055/s-0040-1716315 ◽

2020 ◽

Vol 8 (03) ◽

pp. 115-126

Author(s):

Sanjan Verma ◽

Tarun Kalra ◽

Manjit Kumar ◽

Ajay Bansal ◽

Ritu Batra ◽

...

Keyword(s):

Water Temperature ◽

In Vitro Study ◽

Vitro Study ◽

Marginal Adaptation ◽

Surface Microhardness ◽

Effect Of Water ◽

Fixed Prosthodontics ◽

Restorative Materials ◽

Provisional Restoration

Abstract Introduction Provisional restoration is a critical component of fixed prosthodontics treatment, which must satisfy many inter-relative factors such as biological, mechanical, and esthetic. These restorations should have accurate marginal adaptation and optimum strength to maintain functional demands. The present “in vitro” study was conducted to evaluate the effect of water temperature and duration of immersion, on the marginal adaptation and microhardness of four different commercially available provisional restorative materials. Materials and Methods The 240 specimens were then seated on the stainless-steel die which simulated the prepared tooth, and evaluated for the marginal gap for four different provisional restorative materials and divided into four different groups A, B, C, and D. Each group was further divided into six subgroups according to temperature of water and time of immersion. In each group the samples were immersed in water at 20, 30, and 40 degrees, respectively for 5 and 10-minutes duration. Four different temporary restorative materials for crown fabrication were loaded each time to make temporary crowns. Results Each sample was placed under travelling stereoscopic microscope (20× magnification) and photographed. Results for each surface were obtained, and the average of three surfaces was calculated. Knoop hardness was measured using a microhardness tester. The study was subjected to statistical analysis, to know the statistical significance, of the effect of difference in time and temperature changes at the time of final polymerization on surface microhardness and marginal integrity of four different provisional restorative materials. Discussion The mean marginal discrepancies of bis-GMA (group B) at 20, 30, and 40°C for 5 and 10 minutes in water were smaller than the results of other groups. Microhardness evaluation showed that the poly ethyl methacrylate (PEMA) type resin exhibited significantly lower microhardness than the bis-acryl resin composites (Protemp 4 and Systemp.c&b) at both time and temperature intervals. Conclusion The bis-acryl composites material has the least marginal discrepancy in comparison with PEMA and polymethyl methacrylate (PMMA). The bis-acryl composites materials exhibit superior surface microhardness followed by PEMA and PMMA.

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Effects of different abutment material and surgical insertion torque on the marginal adaptation of an internal conical interface: An in vitro study

Journal of Prosthodontic Research ◽

10.1016/j.jpor.2014.05.004 ◽

2014 ◽

Vol 58 (4) ◽

pp. 230-236 ◽

Cited By ~ 2

Author(s):

Davide Farronato ◽

Stefano Pieroni ◽

Francesco Guido Mangano ◽

Francesco Briguglio ◽

Dino Re

Keyword(s):

In Vitro Study ◽

Vitro Study ◽

Marginal Adaptation ◽

Insertion Torque

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An Effective Method for Spreading Flowable Composites in Resin-based Restorations

Operative Dentistry ◽

10.2341/04-181 ◽

2006 ◽

Vol 31 (1) ◽

pp. 151-154 ◽

Cited By ~ 4

Author(s):

B. Abedian ◽

P. Millstein

Keyword(s):

In Vitro Study ◽

Vitro Study ◽

Interfacial Stress ◽

Marginal Adaptation ◽

Test Cavity ◽

Flowable Composite ◽

Study Results ◽

Flowable Composites

SUMMARY Cavity lining with flowable composites has been suggested for better marginal adaptation and a reduction in interfacial stress and post-operative sensitivity. The following in vitro study compares the spreading of flowable composite that lines the inner wall of a test cavity using an explorer and a specially designed smooth, oscillating, off-center rotating bur spun at 300 to 600 rpm. Two commercial flowable materials were used in this study. Results: With use of the rotating bur, a more consistent, uniform cavity lining was achieved. This was not possible using the dental explorer. Conclusion: The specially designed rotating bur provides an effective way for clinicians to form a uniform cavity lining.

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