The Experts below are selected from a list of 1977 Experts worldwide ranked by ideXlab platform
Su-jung Park - One of the best experts on this subject based on the ideXlab platform.
-
Tooth Discoloration induced by calcium-silicate-based pulp-capping materials.
European Journal of Dentistry, 2015Co-Authors: Su-jung ParkAbstract:Objectives: The aim of this study was to evaluate Tooth Discoloration induced by contact with various calcium silicate-based pulp capping materials in the presence or absence of blood in vitro . Materials and Methods: Eighty bovine samples were divided into six experimental groups and two control groups according to the type of material used (ProRoot [PR], Endocem [EC], or EndocemZr [ECZ]) and the presence or absence of contamination with blood. A spectrophotometer was used to calculate the color difference (ΔE) between the baseline measurement (after placement of materials) and measurements taken 1, 2, 4, and 8 weeks. The results were analyzed with repeated measures analysis of variance, Tukey's post - hoc tests and independent t -tests ( P = 0.05). Results: The PR group and EC group showed significantly higher mean values of ΔE than the negative control group after 2 weeks ( P P Conclusions: ECZ which contains zirconium oxide as a radiopacifier showed less Discoloration irrespective of blood contamination compared to PR and EC.
Peter Parashos - One of the best experts on this subject based on the ideXlab platform.
-
coronal Tooth Discoloration and white mineral trioxide aggregate
Journal of Endodontics, 2013Co-Authors: Daniel Felman, Peter ParashosAbstract:Abstract Introduction This study assessed and characterized Discoloration when white MTA (wMTA) was placed in the coronal aspect of the root canal ex vivo and the influence of red blood cells on this Discoloration. Methods Canals were prepared from the apical aspect and restored with either wMTA + saline ( n = 18), wMTA + blood ( n = 18), or controls ( n = 4 + 4) (blood or saline alone). Color was assessed according to the CIE L*a*b* color space using standardized digital photographs at 3 time points: baseline, day 1, and day 35. Statistical analysis was performed by using 1-way analysis of variance and a 2-sample t test with P Results All teeth discolored when restored with wMTA, which was most prominent in the cervical third of the crown. The presence of blood within the canal adjacent to the setting wMTA exacerbated the Discoloration ( P = .03). Conclusions wMTA induces the gray Discoloration of the Tooth crown, and the effect is compounded in the presence of blood.
-
treatment of Tooth Discoloration after the use of white mineral trioxide aggregate
Journal of Endodontics, 2011Co-Authors: Ilya Belobrov, Peter ParashosAbstract:Introduction: A number of vital pulp therapy techniques havebeenrecommended to preserve pulpvitality in teeth with complicated crown fractures, especially in young patients. Calcium hydroxide has been the gold standard as a pulp capping material, but recently mineral trioxide aggregate (MTA) has been recommended. This case report describes the treatment of Tooth Discoloration caused by white MTA (WMTA) used for the management of a complicated crown fracture. Methods: A partial pulpotomy was performed with the use of WMTA after a complicated crown fracture of the upper right central incisor. Seventeen months later, the WMTA was removed because of Tooth Discoloration, and internal bleaching was performed. Results: Upon access, the WMTA was completely discolored. After it was removed, a significant color change was observed in the Tooth crown, which was further improved with internal bleaching. The Tooth remained vital, and a dentin bridge was confirmed clinically and radiographically. Conclusions: The recommendation to use WMTA for vital pulp therapy in the esthetic zone may need to be reconsidered. Should Discoloration occur with the use of WMTA, the technique described may be used to improve the esthetics. (J Endod 2011;37:1017‐1020)
Keyvan Saati - One of the best experts on this subject based on the ideXlab platform.
-
the effects of three bleaching agents on Tooth Discoloration caused by mineral trioxide aggregate
iranian endodontic journal, 2019Co-Authors: Keyvan Saati, Sheida Sheikhi, Ehsan Esnaashari, Sara ValizadehAbstract:Introduction: Successful outcome of pulp capping treatment using mineral trioxide aggregate (MTA), often leads to Tooth Discoloration. This study aimed to compare the efficacy of external bleaching technique with three bleaching agents naming hydrogen peroxide, carbamide peroxide and sodium perborate for correction of Tooth Discoloration caused by MTA. Methods and Materials: This in vitro , experimental study used 36 Tooth blocks prepared from 12 bovine central incisors. White ProRoot MTA was applied in cavities; drilled in blocks for 40 days to cause Discoloration. Then, the blocks were assigned to three experimental groups ( n=12 ). Following application of hydrogen peroxide, carbamide peroxide and sodium perborate, the color parameters were determined at baseline and at 1, 7 and 14 days, using a spectrophotometer. Data were analyzed using repeated measure ANOVA and Tukey’s test. Results: No significant difference was noted in color change ( ∆E ) immediately after bleaching with hydrogen peroxide and carbamide peroxide ( P >0.05). However, these two groups had significant differences in ∆E with the sodium perborate group ( P =0.001). Hydrogen peroxide group showed significantly higher ∆E at 1 week compared with other groups ( P =0.01). The three groups were significantly different in ∆E at 2 weeks after bleaching ( P =0.001). Pairwise comparisons revealed no significant difference between sodium perborate and carbamide peroxide in ∆E but they both had a significant difference with hydrogen peroxide ( P =0.01). Conclusion: The three bleaching agents bleached the discoloured teeth effectively. Hydrogen peroxide had the highest efficacy whilst sodium perborate and carbamide peroxide had lower but similar efficacy. Keywords: Bleaching; Carbamide Peroxide; Hydrogen Peroxide; Mineral Trioxide Aggregate; Sodium Perborate
-
in vitro spectrophotometry of Tooth Discoloration induced by Tooth colored mineral trioxide aggregate and calcium enriched mixture cement
iranian endodontic journal, 2015Co-Authors: Marjan Arman, Ehsan Esnaashari, Zohreh Khalilak, Moones Rajabi, Keyvan SaatiAbstract:Introduction: There are numerous factors that can lead to Tooth Discoloration after endodontic treatment, such as penetration of endodontic materials into the dentinal tubules during root canal treatment. The aim of this in vitro study was to compare Discoloration induced by Tooth colored mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement in extracted human teeth. Methods and Materials: Thirty two dentin-enamel cuboid blocks (7×7×2 mm) were prepared from extracted maxillary central incisors. Standardized cavities were prepared in the middle of each cube, leaving 1 mm of enamel and dentin on the labial surface. The specimens were randomly divided into two study groups ( n =12) and two positive and negative control groups ( n =4). In either study groups the cavities were filled with MTA or CEM cement. The positive and negative control groups were filled with blood or left empty, respectively. The cavities were sealed with composite resin and stored in normal saline. Color measurement was carried out by spectrophotometry at different time intervals including before (T 0 ), and 1 week (T 1 ), 1 month (T 2 ) and 6 months (T 3 ) after placement of materials. Repeated-measures ANOVA was used to compare the Discoloration between the groups; the material type was considered as the inter-subject factor. The level of significance was set at 0.05. Results: No significant differences were detected between the groups in all time intervals ( P >0.05). Conclusion: Tooth Discoloration was similarly detectable with both of the two experimental materials. Keywords: Calcium-Enriched Mixture; CEM Cement; Crown Discoloration; Mineral Trioxide Aggregate; MTA; Spectrophotometer
Alicja Nowicka - One of the best experts on this subject based on the ideXlab platform.
-
materials used in regenerative endodontic procedures and their impact on Tooth Discoloration
Journal of Oral Science, 2019Co-Authors: Irini Fagogeni, Joanna Metlerska, Mariusz Lipski, Tomasz Falgowski, Gorski Maciej, Alicja NowickaAbstract:There is some evidence of Tooth Discoloration after regenerative endodontic procedures. The aim of this review is to determine which materials used in regenerative procedures induce Tooth Discoloration. The authors searched six digital databases in February 2018: PubMed, Google Scholar, the Cochrane Library, Scopus, Web of Science, and Lilacs. As a result, 353 studies were found. Eleven studies that met the established criteria were selected. Analysis of the selected studies showed that most materials used in regenerative endodontic procedures have the potential to stain Tooth tissues. To decrease Tooth Discoloration, sealing dentin with a dentin-bonding agent before the placement of a disinfectant paste and barrier materials should be considered. Only a small number of in vitro studies have been performed; therefore, further studies on this topic are warranted.
-
Tooth Discoloration induced by different calcium silicate based cements a systematic review of in vitro studies
Journal of Endodontics, 2017Co-Authors: Joanna Mozynska, Mariusz Lipski, Marcin Metlerski, Alicja NowickaAbstract:Abstract Introduction On the basis of many clinical observations, some calcium silicate–based cements have a high potential for staining Tooth tissue. This feature greatly limits the use of those cements, particularly for anterior teeth. This review aimed to provide a systematic evaluation of published in vitro studies to determine the effect of different calcium silicate–based cements on dental tissue Discoloration. Methods This literature review was developed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement. The literature search was based on all publications without a year limit. The last search was performed on October 22, 2016. An electronic search was performed on MEDLINE (PubMed), Cochrane, and Scopus. The articles were selected to address the following research question: Which materials based on calcium silicate–based cements have hard tissue staining potential? The necessary information was extracted by 2 authors independently using a standardized form. Results The search resulted in 390 titles from all databases. Twenty-three studies met the inclusion criteria. Most of the studies exhibited a moderate risk of bias. The results indicated that some materials showed a strong potential for staining, including gray and white MTA Angelus (Londrina, PR, Brazil), gray and white ProRoot MTA (Dentsply, Tulsa, OK), and Ortho MTA (BioMTA, Seoul, Korea). Individual study results showed that Biodentine (Septodont, Saint Maur des Fosses, France), Retro MTA (BioMTA), Portland cement, EndoSequence Root Repair Material (Brasseler USA, Savannah, GA), Odontocem (Australian Dental Manufacturing, Brisbane, Australia), MM-MTA (Micro Mega, Besancon Cedex, France), and MTA Ledermix (Riemser Pharma GmbH, Greiswald-Insel Riems, Germany) were materials with the smallest staining potential. Conclusions This review clearly showed that some calcium silicate–based cements have a high potential for staining hard tissue. On the other hand, some showed only a small change in color, which was nearly invisible to the human eye (ΔE
Meetu R. Kohli - One of the best experts on this subject based on the ideXlab platform.
-
spectrophotometric analysis of coronal Tooth Discoloration induced by tricalcium silicate cements in the presence of blood
Journal of Endodontics, 2020Co-Authors: Stephanie J Chen, Bekir Karabucak, Joshua John Steffen, Meetu R. KohliAbstract:Abstract Introduction New tricalcium silicate cements have been shown to induce less coronal Discoloration. The purpose of this in vitro study was to evaluate the degree of color change induced by various silicate materials in the presence and absence of blood. Methods One hundred human extracted anterior single-canal teeth were sectioned to standardized root lengths, accessed, and instrumented. Eight random experimental groups and 2 control groups were created wherein specimens were filled with experimental materials below the buccal cementoenamel junction as follows: EndoSequence RRM putty (Brasseler USA, Savannah, GA), EndoSequence RRM fast set putty (Brasseler USA), Biodentine (Septodont, Saint-Maur-des-Fosses, France), and white mineral trioxide aggregate (Dentsply Sirona, York, PA) either with the presence or absence of blood. Blood-only and saline-only samples were used for the positive and negative controls. After incubation in 100% humidity at 37°C, color changes were evaluated with a spectrophotometer (Ocean Optics, Dunedin, FL) on days 0, 30, 60, and 180 after material placement. Data were transformed into Commission International de I'Eclairage's L∗a∗b color values, and corresponding ΔE values were calculated. The 1-way analysis of variance test was performed for statistical analysis. Results Discoloration was observed in all specimens in the presence of blood. There was no statistical significance when comparing different materials in contact with blood. Intragroup observation at various time points, Biodentine, and EndoSequence RRM fast set putty showed significant difference between the presence and absence of blood at 180 days (P Conclusions Contamination with blood of tricalcium silicate materials has the potential to cause coronal Tooth Discoloration.
-
Spectrophotometric Analysis of Coronal Tooth Discoloration Induced by Various Bioceramic Cements and Other Endodontic Materials.
Journal of endodontics, 2015Co-Authors: Meetu R. Kohli, Maimi Yamaguchi, Frank C. Setzer, Bekir KarabucakAbstract:Abstract Introduction Coronal Tooth Discoloration induced by various endodontic materials was evaluated in vitro. Methods Eighty extracted human maxillary anterior teeth were accessed, instrumented, and sectioned to standardized root lengths of 10 mm below the cementoenamel junction. Pulp chambers were cleaned chemomechanically to ensure complete tissue removal. Specimens were filled with experimental materials in 8 random groups: RRM, EndoSequence RRM putty (Brasseler, Savannah, GA); RRMF, EndoSequence RRM fast set paste (Brasseler); BD, Biodentine (Septodont, Saint-Maur-des-Fosses, France); WMTA, white MTA (Dentsply, York, PA), GMTA, gray MTA (Dentsply); AH+, AH Plus sealer (Dentsply); TAP, triple antibiotic paste (metronidazole, ciprofloxacin, and minocycline); and NF, no filling (negative control group). After incubation in 100% humidity at 37°C, color changes were evaluated with a spectrophotometer (Ocean Optics, Dunedin, FL) on days 0, 7, 30, 60, and 180 after material placement (T0–T180). Data were transformed into Commission International de I'Eclairage's L*a*b color values, and corresponding ΔE values were calculated. Two-way analysis of variance and the Bonferroni method were performed. Results Visual Discoloration was observed in all specimens in the GMTA, WMTA, and TAP groups at T7, increasing with time. The ΔE value between the initial color at T0 and at T7, T30, T60, and T180 was significantly different for GMTA, WMTA, and TAP (P Conclusions Significant coronal Tooth Discoloration was caused by TAP, GMTA, and WMTA but not by BD, RRM, and RRMF.
