scholarly journals Pre-application of dentin bonding agent prevents discoloration caused by mineral trioxide aggregate

2020 ◽  
Author(s):  
Yoo-Lim Choi ◽  
Young-Eun Jang ◽  
Bom Sahn Kim ◽  
Jin-Woo Kim ◽  
Yemi Kim
Keyword(s):  
Statistical Significance ◽  
Mineral Trioxide Aggregate ◽  
Bonding Agent ◽  
Control Group ◽  
P Value ◽  
Dentin Bonding ◽  
Color Changes ◽  
Tooth Discoloration ◽  
Significant Difference ◽  
Dentin Bonding Agent

Abstract Background: To evaluate tooth discoloration by newly developed calcium silicate-based materials, and to examine the pre-application of dentin bonding agent (DBA) for preventing discoloration caused by mineral trioxide aggregate (MTA).Methods: The roots of 50 premolars were randomly divided into five groups (n=10) and cavities were prepared from resected root surfaces. MTA was placed in the cavities of teeth belonging to the ProRoot MTA (MTA) and RetroMTA (RMTA) groups. For teeth belonging to the ProRoot + DBA (MTA-B) and RetroMTA + DBA (RMTA-B) groups, DBA was first applied to the cavities prior to the addition of MTA. Teeth in the control group were restored with composite resin only (i.e., without MTA). After 12 weeks, MTA was removed from the MTA and RMTA groups and bleaching agents were applied for 3 additional weeks. Color assessments were recorded at baseline, and 1, 4, and 12 weeks, as well as after bleaching. A one-way ANOVA was performed to assess the differences between the two types of MTAs and color changes following DBA pre-application in each MTA group. A p-value of < 0.05 was considered indicative of statistical significance.Results: Following 12 weeks of MTA treatment, there was a significant difference between the discoloration in the MTA and RMTA groups (p < 0.05). However, no significant difference was observed between the RMTA and RMTA-B groups (p > 0.05). Following bleaching, the color changes (ΔE values) of the MTA group were not significantly different from those of the MTA-B group (p > 0.05). The difference of ΔE between the RMTA group after internal bleaching and the RMTA-B group was also not significant (p > 0.05).Conclusions: RetroMTA caused significantly less discoloration than ProRoot MTA. Pre-application of DBA reduced discoloration caused by ProRoot MTA. MTA discoloration was improved equally well between DBA pre-application and post-bleaching.Clinical Relevance: Tooth discoloration by mineral trioxide aggregate (MTA) limits its use in esthetic regions. The pre-application of dentin bonding agent (DBA) and the use of newly developed RetroMTA could help to prevent the discoloration caused by MTA.

scholarly journals Pre-application of dentin bonding agent prevents discoloration caused by mineral trioxide aggregate

2020 ◽  
Author(s):  
Yoo-Lim Choi ◽  
Young-Eun Jang ◽  
Bom Sahn Kim ◽  
Jin-Woo Kim ◽  
Yemi Kim
Keyword(s):  
Statistical Significance ◽  
Mineral Trioxide Aggregate ◽  
Bonding Agent ◽  
Control Group ◽  
P Value ◽  
Dentin Bonding ◽  
Color Changes ◽  
Tooth Discoloration ◽  
Significant Difference ◽  
Dentin Bonding Agent

Abstract Background: To evaluate tooth discoloration by newly developed calcium silicate-based materials, and to examine the pre-application of dentin bonding agent (DBA) for preventing discoloration caused by mineral trioxide aggregate (MTA). Methods: The roots of 50 premolars were randomly divided into five groups (n=10) and cavities were prepared from resected root surfaces. MTA was placed in the cavities of teeth belonging to the ProRoot MTA (MTA) and RetroMTA (RMTA) groups. For teeth belonging to the ProRoot + DBA (MTA-B) and RetroMTA + DBA (RMTA-B) groups, DBA was first applied to the cavities prior to the addition of MTA. Teeth in the control group were restored with composite resin only (i.e., without MTA). After 12 weeks, MTA was removed from the MTA and RMTA groups and bleaching agents were applied for 3 additional weeks. Color assessments were recorded at baseline, and 1, 4, and 12 weeks, as well as after bleaching. A one-way ANOVA was performed to assess the differences between the two types of MTAs and color changes following DBA pre-application in each MTA group. A p-value of < 0.05 was considered indicative of statistical significance. Results: Following 12 weeks of MTA treatment, there was a significant difference between the discoloration in the MTA and RMTA groups ( p < 0.05). However, no significant difference was observed between the RMTA and RMTA-B groups ( p > 0.05). Following bleaching, the color changes (ΔE values) of the MTA group were not significantly different from those of the MTA-B group ( p > 0.05). The difference of ΔE between the RMTA group after internal bleaching and the RMTA-B group was also not significant ( p > 0.05). Conclusions: RetroMTA caused significantly less discoloration than ProRoot MTA. Pre-application of DBA reduced discoloration caused by ProRoot MTA. MTA discoloration was improved equally well between DBA pre-application and post-bleaching. Clinical Relevance: Tooth discoloration by mineral trioxide aggregate (MTA) limits its use in esthetic regions. The pre-application of dentin bonding agent (DBA) and the use of newly developed RetroMTA could help to prevent the discoloration caused by MTA.

scholarly journals Pre-application of dentin bonding agent prevents discoloration caused by mineral trioxide aggregate

2020 ◽  
Author(s):  
Yoo-Lim Choi ◽  
Young-Eun Jang ◽  
Bom Sahn Kim ◽  
Jin-Woo Kim ◽  
Yemi Kim
Keyword(s):  
Statistical Significance ◽  
Mineral Trioxide Aggregate ◽  
Bonding Agent ◽  
Control Group ◽  
P Value ◽  
Dentin Bonding ◽  
Color Changes ◽  
Tooth Discoloration ◽  
Significant Difference ◽  
Dentin Bonding Agent

Abstract Background: To evaluate tooth discoloration by newly developed calcium silicate-based materials, and to examine the pre-application of dentin bonding agent (DBA) for preventing discoloration caused by mineral trioxide aggregate (MTA).Methods: The roots of 50 premolars were randomly divided into five groups (n=10) and cavities were prepared from resected root surfaces. MTA was placed in the cavities of teeth belonging to the ProRoot MTA (MTA) and RetroMTA (RMTA) groups. For teeth belonging to the ProRoot + DBA (MTA-B) and RetroMTA + DBA (RMTA-B) groups, DBA was first applied to the cavities prior to the addition of MTA. Teeth in the control group were restored with composite resin only (i.e., without MTA). After 12 weeks, MTA was removed from the MTA and RMTA groups and bleaching agents were applied for 3 additional weeks. Color assessments were recorded at baseline, and 1, 4, and 12 weeks, as well as after bleaching. A one-way ANOVA was performed to assess the differences between the two types of MTAs and color changes following DBA pre-application in each MTA group. A p-value of < 0.05 was considered indicative of statistical significance.Results: Following 12 weeks of MTA treatment, there was a significant difference between the discoloration in the MTA and RMTA groups (p < 0.05). However, no significant difference was observed between the RMTA and RMTA-B groups (p > 0.05). Following bleaching, the color changes (ΔE values) of the MTA group were not significantly different from those of the MTA-B group (p > 0.05). The difference of ΔE between the RMTA group after internal bleaching and the RMTA-B group was also not significant (p > 0.05).Conclusions: RetroMTA caused significantly less discoloration than ProRoot MTA. Pre-application of DBA reduced discoloration caused by ProRoot MTA. MTA discoloration was improved equally well between DBA pre-application and post-bleaching.

scholarly journals Pre-application of dentin bonding agent prevents discoloration by mineral trioxide aggregate

2020 ◽  
Author(s):  
Yoo-Lim Choi ◽  
Young-Eun Jang ◽  
Bom Sahn Kim ◽  
Jin-Woo Kim ◽  
Yemi Kim
Keyword(s):  
Mineral Trioxide Aggregate ◽  
Bonding Agent ◽  
Control Group ◽  
Dentin Bonding ◽  
Color Changes ◽  
Tooth Discoloration ◽  
Significant Difference ◽  
Dentin Bonding Agent ◽  
The Difference ◽  
Root Surfaces

Abstract Background: To evaluate tooth discoloration by newly developed calcium silicate-based materials, and to examine the pre-application of dentin bonding agent (DBA) for preventing discoloration caused by mineral trioxide aggregate (MTA). Methods: The roots of 50 premolars were randomly divided into five groups (n=10) and cavities were prepared from resected root surfaces. MTA was placed in the cavities of teeth belonging to the ProRoot MTA (Pr) and RetroMTA (Rt) groups. For teeth belonging to the DBA + ProRoot MTA (B-Pr) and DBA + RetroMTA (B-Rt) groups, DBA was first applied to the cavities prior to the addition of MTA. Teeth in the control group were restored with composite resin only (i.e., without MTA). After 12 weeks, MTA was removed from the Pr and Rt teeth and bleaching agents were applied for 3 additional weeks. Color assessments were recorded at baseline, and 1, 4, and 12 weeks, as well as after bleaching. Results: Following 12 weeks of MTA treatment, there was a significant difference between the discoloration in the Pr and B-Pr groups. However, no significant difference was observed between the Rt and B-Rt groups. Following bleaching, the color changes (ΔE values) of the Pr group were not significantly different from those of the B-Pr group. The difference of ΔE between the Rt group after internal bleaching and the B-Rt group also was not significant. Conclusions: RetroMTA caused significantly less discoloration than ProRoot MTA. Pre-application of DBA prevented discoloration by ProRoot MTA. MTA discoloration was improved equally well between DBA pre-application and post-bleaching. Clinical Relevance Tooth discoloration by mineral trioxide aggregate (MTA) limits its use in esthetic region. The pre-application of dentin bonding agent (DBA) and the newly developed RetroMTA prevented discoloration caused by MTA, thus expanding its use in esthetic applications.

scholarly journals Effect of Dentin Bonding Agent on the Prevention of Tooth Discoloration Produced by Mineral Trioxide Aggregate

2012 ◽  
Vol 2012 ◽  
pp. 1-3 ◽  
Author(s):  
Majid Akbari ◽  
Armita Rouhani ◽  
Sadeq Samiee ◽  
Hamid Jafarzadeh
Keyword(s):  
Mineral Trioxide Aggregate ◽  
Bonding Agent ◽  
Color Measurement ◽  
Control Group ◽  
Dentin Bonding ◽  
Tooth Discoloration ◽  
Significant Difference ◽  
Dentin Bonding Agent ◽  
And Control

Objective. Determination of the effect of dentin bonding agent (DBA) on the prevention of tooth discoloration produced by mineral trioxide aggregate (MTA).Methods. 50 teeth were endodontically treated and after removal of 3 mm of obturating materials were divided into five groups. In white MTA (WMTA) and grey MTA (GMTA) groups, these materials were placed in root canal below the orifice. In DBA + WMTA and DBA + GMTA groups, DBAs were applied in the access cavity. Then, 3 mm of WMTA and GMTA was placed. The last 10 teeth served as control. All of teeth were restored and color measurement was recorded for each specimen at this time and 6 months later.Results. The mean tooth discoloration in WMTA and GMTA groups was significantly more than DBA + WMTA and DBA + GMTA groups, respectively. There was no significant difference between DBA + WMTA and DBA + GMTA groups and control group.Conclusion. Application of DBA before MTA may prevent tooth discoloration.

scholarly journals In vitro antibacterial effect of fifth generation dentin bonding agent incorporated with nisin on Streptococcus mutans

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Gopal Keerthipriya ◽  
Nesamani Ravikumar ◽  
Sekar Mahalaxmi
Keyword(s):  
Streptococcus Mutans ◽  
Optical Density ◽  
Bacterial Growth ◽  
Membrane Integrity ◽  
Bonding Agent ◽  
Control Group ◽  
Dentin Bonding ◽  
Fifth Generation ◽  
Live Bacteria ◽  
Dentin Bonding Agent

Abstract Introduction Bacterial adherence to restorative materials such as composite resin is one of the aetiology of secondary caries. This study evaluated the antibacterial efficacy of fifth generation bonding agent (BA) modified with nisin, against Streptococcus mutans based on its growth, adherence and membrane integrity. Methods Adhesive eluents of the experimental bonding agents were obtained using 250 μl Brain Heart Infusion (BHI) broth and the groups were control (BA with 0% Nisin), bonding agent with 1 wt% (NBA 1) and 5 wt% nisin (NBA 5). To this, 10 μl S. mutans culture was added and incubated at 37 °C. Bacterial growth was estimated by changes in optical density using spectrophotometer every 20 min for 2 h. The results were statistically analysed using one way ANOVA followed by Tukey Post Hoc test. For adherence and membrane integrity test, 10 μl of BHI supplemented with 1% sucrose and 50 μl of bacterial suspension were inoculated onto the cured specimens, and incubated for 4 h. After rinsing, 1 ml of Live/Dead BacLight bacterial viability stain was added and incubated in the dark for 15 min and observed under confocal laser scanning microscope (CLSM) for intact (green/live) and damaged (red/dead) bacterial membranes. Results Mean optical density was significantly higher in control group at all time intervals with maximum value at 2 h (0.83 ± 0.008), while there was a concentration dependant reduction in bacterial growth with the NBA groups (0.50 ± 0.007). Correspondingly, the NBA groups showed higher amount of dead than live bacteria, while live bacteria were predominant in the control group. Significance Addition of an antibacterial agent nisin in dentin bonding agent may render the resin dentin interface more resistant to bacterial penetration, and adherence of cariogenic bacteria like S. mutans.

Quantifying Coronal Permanent Tooth Discoloration Caused by Different Pulpotomy Materials

2021 ◽  
Vol 45 (5) ◽  
pp. 306-311
Author(s):  
Hanaa Azem ◽  
Sigalit Blumer ◽  
Benjamin Peretz ◽  
Sohad Haj-Yahya ◽  
Shlomo Elbahary
Keyword(s):  
Color Space ◽  
Mineral Trioxide Aggregate ◽  
Permanent Tooth ◽  
Control Group ◽  
Major Drawback ◽  
Tooth Structure ◽  
Color Changes ◽  
Base Materials ◽  
Tooth Discoloration ◽  
Over Time

Introduction: Bioceramic materials, gray and white mineral trioxide aggregate (GMTA, WMTA), have been shown to have high rates of success in various endodontic applications. A major drawback is their tendency to discolor teeth compared to Biodentine (BD), that has been claimed not to discolor teeth. The aim of this study was to compare tooth discoloration after applying different pulpotomy base materials (BD, GMTA and WMTA). Study design: Forty human incisors teeth were used in this study. Coronal access was achieved by a Tungsten Carbide drill, and the pulp chambers were accessed and chemo-mechanically debrided. Each material was placed in the pulp chamber, up to the cervical sectioning level. All specimens were incubated at 37°C and 100% humidity for three months and have been evaluated before the study and weekly. Color was assessed according to the CIE L*a*b* color space system. Results: ΔE of all experimental groups (GMTA, WMTA and BD) were significantly different from the control group at all time points (P&lt;0.05). Color changes in the GMTA and WMTA groups, had no statistically significant differences, but showed higher discoloration compared to BD group in the cervical part of the crown, since week 1 (P&lt;0.05). WMTA group showed significant discoloration in the cervical part as of week 1 (P&lt;0.05), and gradually increased over time (Figure 2). BD group showed no significantly discoloration over time. GMTA group showed the significant discoloration at week 1 and week 14 (P&lt;0.05). Conclusions: both GMTA and WMTA pulpotomy materials may discolor tooth structure over time in an extracted permanent anterior tooth model. When choosing bioceramic pulpotomy material, BD may be preferable in esthetic area.

The Relationship between the Type of Milk Consumed and the Risk of Kidney Stones in Children Under Two Years of Age

2021 ◽  
Author(s):  
Hamideh Shajari ◽  
Ahmad Shajari ◽  
Mohammad Golshan Tafti ◽  
Reza Samaninejad
Keyword(s):  
Kidney Stones ◽  
Statistical Significance ◽  
Cow Milk ◽  
Control Group ◽  
P Value ◽  
Case Group ◽  
Growth Disorders ◽  
Formula Milk ◽  
Significant Difference ◽  
Duration Of Breastfeeding

Background: Kidney stones are one of several serious health problems in childhood that cause nutritional and growth disorders, and may finally lead to chronic kidney failure in this group. Methods: In this analytical study conducted through a case-control design, 30 children under the age of two with kidney stones, and 125 children of the same age and sex without stones were studied. Patient information including personal profile and the results of some necessary tests were extracted from patient records and listed in a checklist. The data was analyzed using SPSS (Version 17.0). Statistical significance was considered when p-value was <0.05. Results: In terms of duration of breastfeeding, a significant difference was observed between the patients with stones and patients without stones; the duration of breastfeeding was longer in the control group (p=0.003). In addition, the duration of feeding with formula milk and cow milk was longer in the case group (p=0.038 and p=0.012, respectively). Conclusion: Breastfeeding can serve as a nutritional factor that plays a preventive and protective role against the formation of kidney stones in infants.

scholarly journals Performance and Return to Sport After Hip Arthroscopic Surgery in Major League Baseball Players

2019 ◽  
Vol 7 (2) ◽  
pp. 232596711982583 ◽  
Author(s):  
Robert A. Jack ◽  
Kyle R. Sochacki ◽  
Takashi Hirase ◽  
Justin Vickery ◽  
Patrick C. McCulloch ◽  
...  
Keyword(s):  
Major League Baseball ◽  
Statistical Significance ◽  
Arthroscopic Surgery ◽  
Return To Sport ◽  
Control Group ◽  
P Value ◽  
Postoperative Performance ◽  
Significant Difference ◽  
Major League ◽  
And Performance

Background: Femoroacetabular impingement (FAI) is a common cause of hip pain that may lead to decreased performance in Major League Baseball (MLB) players. Purpose: To determine the (1) return-to-sport (RTS) rate in MLB players after hip arthroscopic surgery for FAI; (2) postoperative career length, innings pitched (IP) (pitchers), and plate appearances (PA) (position players); (3) preoperative and postoperative performance; and (4) postoperative performance compared with control players matched by position, age, years of experience, and performance. Study Design: Cohort study; Level of evidence, 3. Methods: MLB athletes who underwent hip arthroscopic surgery for FAI and matched controls were identified. Demographic and performance data were collected. RTS was defined as playing in at least 1 MLB game after surgery. Continuous variables of each group were compared using a 2-tailed paired-samples Student t test for normally distributed data. The chi-square test was used to analyze categorical data. The Bonferroni correction was used to control for multiple comparisons, with statistical significance defined by a P value of ≤.007. Results: A total of 50 players (57 surgeries) were analyzed (mean age, 30.4 ± 3.9 years; mean MLB experience at the time of surgery, 7.0 ± 4.6 years). Pitchers (31 surgeries; 54.4%) represented the largest proportion of players analyzed. Of these players, 42 (47 surgeries; 82.5%) were able to RTS at a mean of 8.3 ± 4.1 months. The overall 1-year MLB career survival rate of players undergoing FAI surgery was 78.9%. Players in the control group were in MLB a similar number of years (4.0 ± 2.9 years) to players who underwent surgery (3.3 ± 2.4 years) ( P > .007). There was no significant decrease in IP or PA per season after surgery ( P > .007). There was no significant difference in performance for pitchers and nonpitchers compared with matched controls after surgery ( P > .007). Conclusion: The RTS rate for MLB athletes after hip arthroscopic surgery for FAI was high. There were similar IP, PA, and career lengths postoperatively compared with preoperatively and with matched controls. There was no significant difference in performance for pitchers and nonpitchers compared with matched controls after surgery.

Quantifying Coronal Primary Tooth Discoloration Caused by Different Pulpotomy Materials

2020 ◽  
Vol 44 (3) ◽  
pp. 142-147
Author(s):  
S Elbahary ◽  
R Bercovich ◽  
N Flaisher-Salem ◽  
H Azem
Keyword(s):  
Color Space ◽  
Mineral Trioxide Aggregate ◽  
Primary Tooth ◽  
Control Group ◽  
Major Drawback ◽  
Tooth Structure ◽  
Color Changes ◽  
Base Materials ◽  
Tooth Discoloration ◽  
Over Time

Introduction: Bioceramic materials, gray and white mineral trioxide aggregate (GMTA, WMTA), have been shown to have high rates of success in various endodontic applications. A major drawback is their tendency to discolor teeth. Biodentine (BD), a recenlty developed bioceramic material, has been claimed not to discolor teeth. The aim of this study was to compare tooth discoloration after applying different pulpotomy base materials (BD, GMTA and WMTA). Methods: Forty human fully developed primary incisors teeth were used in this study. Coronal access was achieved by a Tungsten Carbide drill, and the pulp chambers were accessed and chemo-mechanically debrided. Each material was placed in the pulp chamber, up to the cervical sectioning level. All specimens were incubated at 37°C and 100% humidity for 14 weeks and have been evaluated before the study and weekly. Color was assessed according to the CIE L*a*b* color space system. Results: The ΔE (delta E) of all experimental groups (GMTA, WMTA and BD) were significantly different from the control group at all time points. Color changes in the GMTA and WMTA groups showed significantly higher discoloration compared to BD group in the cervical part of the crown, since week 1. WMTA group showed significant discoloration in the cervical part as of week 1, and gradually increased over time. BD group showed no significant discoloration over time. GMTA group showed the most significant discoloration at week 1 and week 14 (P&lt;0.05). Conclusions: both GMTA and WMTA pulpotomy materials may discolor tooth structure over time in an extracted primary anterior tooth model. When choosing bioceramic pulpotomy material, BD may be preferable, mainly in esthetic area.

scholarly journals Comparison of Sealing Efficiency of Mineral Trioxide Aggregate and Biodentine used in Perforation Repair in Acidic and Neutral Environments- An In-vitro Study

2021 ◽  
Author(s):  
Güney Mustafa Yüzer ◽  
Sadullah Kaya
Keyword(s):  
Statistical Significance ◽  
Mineral Trioxide Aggregate ◽  
In Vitro Study ◽  
P Value ◽  
Technology Application ◽  
Significant Difference ◽  
Acid Environment ◽  
Materials Used

Introduction: Furcation perforation is one of the complications that occur during endodontic treatment due to anatomical differences or iatrogenic causes. Repairing the perforation with a biocompatible material eliminates the connection with the gingival sulcus and positively affects the prognosis. The sealing ability of the repair materials is very important and is affected by the conditions of the environment in which they are applied. Aim: To compare the sealing efficiency of Mineral Trioxide Aggregate (MTA) (Angelus, Londrina, PR, Brazil) and Biodentine (Septodont, Saint Maur des Fosses, France) materials used in the repair of furcation perforations in acidic and neutral environments. Materials and Methods: This in-vitro experimental study was carried out in the Department of Endodontics at Dicle University Faculty of Dentistry, Diyarbakır, Türkiye and Dicle University Science and Technology Application and Research Center from 10th June 2020 to 22nd July 2020. A total of 96 mandibular molars were used in the study. The specimens were randomly divided into two equal groups (n=48). When the perforations were repaired with MTA and Biodentine materials, each group was divided into four subgroups (n=12). These subgroups were kept in Phosphate Buffered Saline (PBS) and Acetic Acid (AA) solutions for different periods of time from 4 or 34 days, and all groups were immersed in methylene blue solution. The dye penetration level of the divided sections was examined under a stereomicroscope (Leica, Wetzlar, Germany). Microleakage data of all groups were statistically analysed using Kolmogorov Smirnov, Shapiro Wilk’s and Mann-Whitney U Test. Statistical significance was set at 0.05, it was stated that there was a significant difference when p-value <0.05. Results: The short-term (4 days) microleakage level of biodentine material in the AA environment was significantly lower than that of MTA material (p-value=0.005). There was no statistically significant difference between the materials in terms of long-term (34 days) microleakage levels in the AA environment (p-value >0.05). The long-term microleakage level in PBS environment of biodentine material was significantly lower than that of the AA environment (p-value=0.008). Conclusion: Lower microleakage levels were observed in the neutral environment than the acid environment with both MTA and biodentine during both holding periods.

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