bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Three Different Contamination Removal Methods on Bond Strength of a Self-etching Adhesive to Dentin Contaminated with an Aluminum Chloride Hemostatic Agent
Authors: Oskoee Siavash Savadi , Bahari Mahmoud , Ajami Amir Ahmad , Kahnamoii Mehdi Abed , Kimyai Soodabeh , Pournaghi-Azar Fatemeh 
Published: March 2013

ABSTRACT

Aim
This study evaluated the effect of three different contamination removal methods on bond strength of one-step self-etching adhesive to dentin contaminated with an aluminum chloride hemostatic agent.

Materials and methods
One hundred noncarious adult molars were used in this study; 2-mm-thick dentin disks were prepared and randomly assigned to 5 groups (n = 20). Group I: control; group II: hemostatic agent-contaminated; group III: hemostatic agent-contaminated and rinsing with water; group IV: hemostatic agent-contaminated and ethylene diamine tetraacetic acid (EDTA) application; and group V: hemostatic agent-contaminated and phosphoric acid application. Clearfil S3 Bond was used to bond composite to dentin surfaces. Subsequent to adding composite cylinders the shear bond strength test was performed. Data were analyzed by one-way ANOVA and Tukey test. Two additional specimens from each group were prepared and evaluated under scanning electron microscope (SEM).

Results
There were statistically significant differences in bond strength among the groups (p < 0.001). In two-by-two comparisons statistically significant differences were observed in bond strength values between all the groups (p < 0.001) except for groups I and IV (p = 0.933).

Conclusion
Aluminum chloride hemostatic agent adversely affected the bond strength of self-etch adhesive to dentin. However, application of EDTA increased the bond strength to the level of normal dentin.

Clinical significance
EDTA and phosphoric acid removed aluminum chloride hemostatic agent contamination of dentin surfaces. However, unlike EDTA phosphoric acid failed to increase the bond strength of self-etch adhesive to dentin to the level of the control group.

How to cite this article
Ajami AA, Kahnamoii MA, Kimyai S, Oskoee SS, Pournaghi-Azar F, Bahari M, Firouzmandi M. Effect of Three Different Contamination Removal Methods on Bond Strength of a Self-etching Adhesive to Dentin Contaminated with an Aluminum Chloride Hemostatic Agent. J Contemp Dent Pract 2013;14(1):26-33.
Quantitative Assessment of Myofibroblast in Severe Dysplasia, Microinvasion and Oral Squamous Cell Carcinoma: An Immunohistochemical Study
Authors: Baad Rajendra , Bommanavar Sushma , Kapse Sonam C , Rathod Nanita , Mandlik Jyoti , Sharma Anupam S 
Published: March 2013

ABSTRACTMyofibroblast are essential for the integrity of human body by virtue of its role in wound healing and pathological organ remodeling. Myofibroblast is a universal cellular component in mammalian lesions, but not a typical component of normal untraumatized tissues. Therefore its presence in abundance in case of cancer is a matter of concern. Tumor microenvironment plays a pivotal role in tumor progression. These so called cancer associated fibroblast or myofibroblast are the major components and occur in stromal tissue during carcinogenesis processes. This study is a quantitative assessment of presence and distribution of myofibroblast in severe dysplasia, microinvasion and oral squamous cell carcinoma (OSCC).How to cite this articleKapse SC, Rathod N, Baad R, Mandlik J, Sharma AS, Bommanavar S. Quantitative Assessment of Myofibroblast in Severe Dysplasia, Microinvasion and Oral Squamous Cell Carcinoma: An Immunohistochemical Study. J Contemp Dent Pract 2013;14(1):34-38.
Mandibular Ramus Fractures: A Rarity
Authors: Kale Tejraj Pundalik , Kotrashetti SM , Louis Archana , Lingaraj JB , Sarvesh BU 
Published: March 2013

ABSTRACT

Aim
To determine the incidence of mandibular ramus fractures in KLE's PK Hospital and to analyze the outcome of open reduction and internal fixation of these fractures.

Materials and methods
Using a retrospective study design, records of all trauma patients who reported to the Department of Oral and Maxillofacial Surgery, KLE's PK Hospital Belgaum, between the years January 2006 to October 2011 was obtained from the medical records office. The data variables that were analyzed were the name, age, sex, cause of injury, pretreatment occlusion, treatment given, period of MMF and post-treatment occlusion.

Results
Total number of mandibular fracture cases was 298. Ramus fractures were 10 in number which accounted for 3.3% of fractures. The age range of these 10 patients was seen to be between 20 to 80 years with the average age being 35.6 years. Of these 10 patients, 9 were male and 1 was female and 7 patients were treated by open reduction and internal fixation and the remaining 3 by closed reduction. The average period of MMF was 3 days for the patients who underwent open reduction and internal fixation. There was improvement in occlusion in all 10 patients post-treatment and there was no complication reported in any of the cases.

Conclusion
Ramus fractures accounted for 3.3% of all mandibular fractures. Open reduction and internal fixation of ramus fractures ensures adequate functional and anatomic reduction.

Clinical significance
This study makes an attempt to throw a light on the increasing incidence of ramus fractures and a successful management of these fractures by open reduction and internal fixation.

How to cite this article
Kale TP, Kotrashetti SM, Louis A, Lingaraj JB, Sarvesh BU. Mandibular Ramus Fractures: A Rarity. J Contemp Dent Pract 2013;14(1):39-42.
Lateral Radiographic Technique: An Alternative Approach for Anterior Teeth
Authors: Silva Emmanuel JNL , Junior Carlos Vieira Andrade , Da Silva Juliana Melo , Ferraz Caio Cesar Randi 
Published: March 2013

ABSTRACT

Aim
To describe the lateral radiographic technique, its use and indication.

Background
The clinician's difficulty in performing the correct diagnosis for some endodontic situations sometimes leads to a compromised treatment of some teeth. Considering this, an alternative radiographic technique for anterior teeth (lateral radiographic technique - LRT) may be used to help endodontic diagnosis.

Technique
This technique use a periapical radiographic film or sensor that is placed vertically in the anterior portion of maxilla or mandible and with the beam passing perpendicular to the radiographic film its possible to evaluate the possibility of a fenestration on the buccal cortical bone plate; differentiate overextension and overfilling; indentify root fractures; confirm the presence and location of an instrument in the root canal system; and assess the treatment of root perforations.

Conclusion
LRT is an easy and cheap technique that can be used to help in anterior teeth diagnosis.

Clinical significance
Considering that LRT is easy to perform and available at low cost, it could be utilized more by clinicians in the dental office in order to quickly assist in diagnosis. As a complimentary radiographic examination for anterior teeth, it could become a useful supplement to aid the clinical practice.

How to cite this article
Andrade CV Jr, Leal Silva EJN, Da Silva JM, Ferraz CCR. Lateral Radiographic Technique: An Alternative Approach for Anterior Teeth. J Contemp Dent Pract 2013;14(1):43-46.
Sealing Ability of Various Restorative Materials as Coronal Barriers between Endodontic Appointments
Authors: Tapsir Zalilah , Ahmed Hany Mohamed Aly , Luddin Norhayati , Husein Adam 
Published: March 2013

ABSTRACT

Aim
To evaluate and compare the microleakage of various restorative materials used as coronal barriers between endodontic appointments.

Materials and methods
Eighty extracted human permanent posterior teeth were prepared for standardized access cavities with dimensions of 4 × 4 × 4 mm. The teeth were then randomly divided into four groups; Kalzinol, Caviton, GC Fuji IX and GC Fuji II LC. After incubation, the samples were immersed in 2% methylene blue for 7 days. The depth of penetration was measured using a digital macroscope after longitudinal sectioning of each tooth. Kruskal-Wallis (p < 0.05) and multiple Mann-Whitney test with Bonferroni correction (p < 0.008) were used for data analysis.

Results
The degree of microleakage varied at the material/ tooth interface among the test materials, and the difference was statistically significant (p < 0.05). GC Fuji II LC group showed the least median microleakage value (0.8105 ± 0.305), followed by Caviton (1.1885 ± 0.396), GC Fuji IX (3.3985 ± 0.305) and Kalzinol (4.161 ± 0.853).

Conclusion
Within the limitations of this study, GC Fuji II LC exhibited the best marginal seal, and has the potential to be used as a suitable coronal barrier between endodontic appointments.

Clinical significance
Given the prime importance that dental practitioners should thoroughly restore any tooth with a suitable coronal barrier between endodontic appointments, this study shows that Fuji II LC has the ability to maintain a hermetic seal for 7 days.

How to cite this article
Tapsir Z, Ahmed HMA, Luddin N, Husein A. Sealing Ability of Various Restorative Materials as Coronal Barriers between Endodontic Appointments. J Contemp Dent Pract 2013;14(1):47-50.
Microleakage of Class V Resin Composites using Various Self-etching Adhesives: An in vitro Study
Authors: Chandra PV Ravi , Harikumar V , Ramkiran D , Krishna MJN , Gouda M Veerabhadra 
Published: March 2013

ABSTRACT

Background and aims
Microleakage has been identified as a significant problem with composite restorations because of interfacial gap formation which can result in tooth discoloration, recurrent caries, possible pulpal involvement and restoration replacement. Aim of this study is to evaluate the microleakage of self-etch adhesive system at the coronal and apical margins of class V resin composite restorations under stereomicroscope at 20× magnification.

Materials and methods
Class V cavities were prepared on the facial surfaces of 48 human premolars with coronal margins located in enamel and apical margins located in dentin. Teeth were divided into four groups: Group one—Xeno V; group two— G-Bond; group three—Clearfil S3 Bond; group four—control. After application of bonding agent and restoration, the teeth were subjected to thermocycling. The teeth were then immersed in 1% aqueous solution of methylene blue dye for 24 hours and sectioned to allow the assessment of microleakage under microscope.

Results
Coronal and apical margins were scored separately using a 0-3 ordinal ranking system and the recorded values were statistically analyzed using Kruskal-Wallis, Mann- Whitney U-test and Wilcoxon signed rank test. Statistical analysis showed that there was less microleakage in Xeno V at coronal region and Clearfil S3 Bond in apical region, overall Clearfil S3 Bond showed less marginal permeability in both coronal and apical regions.

Conclusion
Specimens restored with the Xeno V and Clearfil S3 Bond adhesive systems revealed reduced leakage at the coronal margin. At the apical margin, Xeno V showed greater leakage than the other groups, except the control.

Clinical significance
In class V restorations restored with composite resin, the choice of material affects the microleakage and retention of the restoration. This study theorizes that the self-etch adhesives show less microleakage in the coronal area than the apical margin.

How to cite this article
Chandra PVR, Harikumar V, Ramkiran D, Krishna MJN, Gouda MV. Microleakage of Class V Resin Composites using Various Self-etching Adhesives: An in vitro Study. J Contemp Dent Pract 2013;14(1):51-55.
The Effect of Flowable Composite Lining Thickness with Various Curing Techniques on Microleakage in Class II Composite Restorations: An in vitro Study
Authors: Reddy S Nagalaxmi , Jayashankar DN , Nainan Mohanthomas 
Published: March 2013

ABSTRACT

Aim
Aim of this study was to compare class II composite restoration using flowable composites as lining with various thickness and curing techniques by evaluating cervical marginal microleakage.

Materials and methods
Fifty intact molars, each prepared with two box-only class II cavities, were randomly divided into five groups: Group I, P60 filling alone; group II, ultrathin flowable composite lining (0.5-1mm) cocured with overlying composite; group III, thin lining (1-1.5) cocured with overlying composite; group IV, ultrathin lining (0.5-1 mm) precured and group V, thin lining (1-1.5) precured. The teeth were then thermocycled for 1500 cycles (between 5 and 60 °C) and immersed in dye for 24 hours. Cervical microleakage was measured as the extent of dye penetration.

Results
Cocured specimens (groups II and III) showed least microleakage and control specimens (group I) showed maximum microleakage. On comparison of curing techniques, cocured specimens (groups II and III) showed less microleakage than precured (groups IV and V). On comparison of lining thickness and type of curing, group IV showed less microleakage than group V. Groups II and III were statistically not significant.

Conclusion
It was concluded from the results that ultrathin cocured flowable composite lining specimens improved the marginal sealing with decreased microleakage.

Clinical significance
In this study, the application of additional flowable composite lining with various thicknesses presented different influences in marginal quality of class II box only composite restorations. A new technique applying an ultrathin flowable composite lining with cocuring technique improved the marginal sealing with decreased microleakage. Restorations with thin lining presented reduced marginal integrity after thermocycling.

How to cite this article
Reddy SN, Jayashankar DN, Nainan M, Shivanna V. The Effect of Flowable Composite Lining Thickness with Various Curing Techniques on Microleakage in Class II Composite Restorations: An in vitro Study. J Contemp Dent Pract 2013;14(1):56-60.
Evaluate the Usage of Different Advanced Endodontic Instruments and Techniques in Pediatric Dentistry
Authors: Patil Anil , Mandlik Jyoti , Sharma Anupam S , Kathariya Mitesh D , Jadav Rutiga H 
Published: March 2013

ABSTRACT

Objective
The purpose of study is to find the prevalence of usage of different advanced endodontic instruments and techniques in pediatric dentistry.

Materials and methods
A self-administered, structured questionnaire written in English validated through a pretested survey was randomly mailed to the postgraduate students in different dental colleges. A total of 182 of the complete filled questionnaires were returned with response rate of 68.2%. The data were analyzed using the SPSS version 15.0. The Student's t-test and ANOVA test were used as test of significance. Karl Pearson's correlation test was used to assess years of education and usage of endodontic instruments.

Results
There was a limited use of new endodontic technologies in the present study. The highest positive response to the usage of advanced endodontic instruments was related to NiTi rotary files with highest number seen among 3rd year students. A linear relationship was found between years of postgraduation and usage of advanced endodontic instruments using Karl Pearson's correlation coefficient.

Clinical significance
Based on the results of the present study, it seems that the usage of advanced endodontic instruments is not up to the level. Also we found increased use of new technologies with years of postgraduation.

How to cite this article
Kathariya MD, Patil S, Patil A, Jadav RH, Mandlik J, Sharma AS. Evaluate the Usage of Different Advanced Endodontic Instruments and Techniques in Pediatric Dentistry. J Contemp Dent Pract 2013;14(1):61-64.
Comparison of Air-driven vs Electric Torque Control Motors on Canal Centering Ability by ProTaper NiTi Rotary Instruments
Authors: Zarei Mina , Javidi Maryam , Erfanian Mahdi , Lomee Mahdi , Afkhami Farzaneh 
Published: March 2013

ABSTRACTAimCleaning and shaping is one of the most important phases in root canal therapy. Various rotary NiTi systems minimize accidents and facilitate the shaping process. Todays NiTi files are used with air-driven and electric handpieces. This study compared the canal centering after instrumentation using the ProTaper system using Endo IT, electric torque-control motor, and NSK air-driven handpiece.Materials and methodsThis ex vivo randomized controlled trial study involved 26 mesial mandibular root canals with 10 to 35° curvature. The roots were randomly divided into 2 groups of 13 canals each. The roots were mounted in an endodontic cube with acrylic resin, sectioned horizontally at 2, 6 and 10 mm from the apex and then reassembled. The canals were instrumented according to the manufacturer's instructions using ProTaper rotary files and electric torque-control motors (group 1) or air-driven handpieces (group 2). Photographs of the cross-sections included shots before and after instrumentation, and image analysis was performed using Photoshop software. The centering ability and canal transportation was also evaluated. Repeated measurement and independent t-test provided statistical analysis of canal transportation.ResultsThe comparison of the rate of transportation toward internal or external walls between the two groups was not statistically significant (p = 0.62). Comparison of the rate of transportation of sections within one group was not significant (p = 0.28).ConclusionUse of rotary NiTi file with either electric torquecontrol motor or air-driven handpiece had no effect on canal centering.Clinical significanceNiTi rotary instruments can be used with air-driven motors without any considerable changes in root canal anatomy, however it needs the clinician to be expert.How to cite this articleZarei M, Javidi M, Erfanian M, Lomee M, Afkhami F. Comparison of Air-driven vs Electric Torque Control Motors on Canal Centering Ability by ProTaper NiTi Rotary Instruments. J Contemp Dent Pract 2013;14(1):71-75.
Degree of Conversion of Polymer-matrix Composite assessed by FTIR Analysis
Authors: Tonetto Mateus Rodrigues , de Andrade Marcelo Ferrarezi , Pinto Shelon Cristina Souza , Borges Alvaro Henrique , Bandéca Matheus Coelho , de Nara Souza Rastelli Alessandra , Saad José Roberto Cury , Pedro Fábio Luis Miranda 
Published: March 2013

ABSTRACT

Aims and objectives
The behavior of polymer-matrix composite is dependent on the degree of conversion. The aim of this study was to evaluate the degree of conversion of two resin cements following storage at 37°C immediately, 24 and 48 hours, and 7 days after light-curing by FTIR analysis.

Materials and methods
The specimens were made in a metallic mold and cured with blue LED with power density of 500 mW/ cm2 for 30 seconds. The specimens were pulverized, pressed with KBr and analyzed with FTIR following storage times.

Statistical analysis used
ANOVA (two-way) and Tukey's post hoc.

Results
To the polymer-matrix composites between 24 and 48 hours does not show a significant increase (p > 0.05), however, the highest values were found after 7 days.

Conclusion
The polymer-matrix composites used in this study showed similarity on the degree of conversion and increased of according to the time of storage.

How to cite this article
Tonetto MR, Pinto SCS, de Nara Souza Rastelli A, Borges AH, Saad JRC, Pedro FLM, de Andrade MF, Bandéca MC. Degree of Conversion of Polymer-matrix Composite assessed by FTIR Analysis. J Contemp Dent Pract 2013;14(1):76-79.
A Comparative Evaluation of Flexural Strength of Commercially Available Acrylic and Modified Polymethylmethacrylate: An in vitro Study
Authors: Yadav Naveen S , Jain Teerthesh , Pandita Amrita , Feroz SMA , Kartika UK , Singh Praval Pratap 
Published: March 2013

ABSTRACT

Aim
The purpose of this study was to evaluate and compare the flexural strength of commercially available acrylic (trevalone) and modified polymethylmethacrylate (PMMA).

Materials and methods
Four groups were tested; Group 1— control group regular MMA, group 2—2% methacrylic acid, 88% MMA, group 3—16% methacrylic acid, 84% MMA group 4— 20% methacrylic acid, 80% MMA 15 resin specimens of each group were polymerized. After processing, the specimens were subjected for flexural strength testing using three point bending test in a Universal Testing Machine. All data was statistically analyzed with one-way ANOVA, differences within the groups were analyzed by Scheffe's analysis.

Results
As the ratio of incorporated methacrylic acid to PMMA increased, the flexural strength decreased. Analysis of data revealed a significant decrease in flexural strength of specimens (p < 0.000) after incorporation of 12%, 16%, 20% methacrylic acid to heat polymerized acrylic resin, when compared with the control group. Lowest flexural strength was observed with specimens containing 20% methacrylic acid and highest flexural strength was observed with specimens containing conventional monomer without methacrylic acid.

Conclusion
It was observed that as the concentration of methacrylic acid in heat polymerized acrylic resin increases, the flexural strength decreases. Lowest flexural strength was observed with specimens containing 20% methacrylic acid and highest flexural strength was observed with specimens containing conventional monomer without methacrylic acid.

Clinical significance
The major advantages of addition of methacrylic acid to polymethylmethacrylate could be for the elderly people with restricted manual dexterity or cognitive disturbances, especially for patients who do not follow an adequate denture cleansing protocol and diabetic patients who are more susceptible for denture stomatitis.

How to cite this article
Jain T, Yadav NS, Pandita A, Feroz SMA, Kartika UK, Singh PP. A Comparative Evaluation of Flexural Strength of Commercially Available Acrylic and Modified Polymethylmethacrylate: An in vitro Study. J Contemp Dent Pract 2013;14(1):80-83.
An in vitro Evaluation of Diametral Tensile Strength and Flexural Strength of Nanocomposite vs Hybrid and Minifill Composites cured with Different Light Sources (QTH vs LED)
Authors: Srikanth K Venkata , Garapati Surendra Nath , LNU Priyadarshini , Raturi Piyush , Shetty Dinesh 
Published: March 2013

ABSTRACT

Background
Composites always remained the target of discussion due to lot of controversies around it. Mechanical properties are one of them. With the introduction of new technology and emergence of various composites which combine superior strength and polish retention, nanocomposites have led to a new spark in the dentistry. A recent curing unit LED with various curing modes claims to produce higher degree of conversion.
The aim of this study was to evaluate the diametral tensile strength and flexural strength of nanocomposite, hybrid and minifill composites cured with different light sources (QTH vs LED).

Materials and methods
Seventy-two samples were prepared using different specially fabricated teflon molds, 24 samples of each composite were prepared for the diametral tensile strength (ADA specification no. 27) and the flexural strength (ISO 4049) of the 12 samples, six were cured with LED (Soft Start curing profile) and other six with QTH curing light and tested on a universal testing machine.

Results
The nanocomposite had highest diametral tensile strength and flexural strength which were equivalent to the hybrid composite and superior than the minifill composite.

Conclusion
With the combination of superior esthetics and other optimized physical properties, this novel nanocomposite system would be useful for all posterior and anterior applications.

How to cite this article
Garapati SN, Priyadarshini, Raturi P, Shetty D, Srikanth KV. An in vitro Evaluation of Diametral Tensile Strength and Flexural Strength of Nanocomposite vs Hybrid and Minifill Composites cured with Different Light Sources (QTH vs LED). J Contemp Dent Pract 2013;14(1):84-89.