bluuebunny/crossref_metadata_2025_split huggingface dataset:
Miti o učenju drugega/tujega jezika
Authors: Nagode Gabrijela Petra , Pižorn Karmen 
Published: December 2016

O učenju tujih jezikov obstajajo določeni miti, nepreverjene »resnice«, ki so se ponekod »fosilizirali« in morda sploh več ne vzbujajo nobenih dvomov med običajnimi uporabniki jezikov. V članku osvetlimo izbor štirih mitov o učenju drugega/tujega jezika. V prvem mitu se sprašujemo, kakšno vlogo ima starost pri učenju drugega/tujega jezika. V drugem mitu se sprašujemo, če večina napak v drugem/tujem jeziku res nastane zaradi prenosa (ne)znanja iz prvega jezika v drugi/ tuji jezik oziroma transferja. S tretjim mitom preverjamo, ali naj res učitelj vsako napako popravi takoj z namenom, da si je učenec ne bo zapomnil. V četrtem mitu pa nas zanima, ali ima branje res največji vpliv na širjenje besedišča tako v prvem kot drugem/tujem jeziku. Miti o učenju tujega jezika so pogosto kompleksni, kar velja tudi za mite, predstavljene v tem članku. Glede njihove resničnosti ugotavljamo, da najverjetneje najmanj drži mit o nujnosti takojšnjega popravljanja napak, precej bolj pa prvi, drugi in četrti mit.
Assessment of the Pubertal Growth Period using the Open Apices of the Lower Teeth
Authors: Burhan Ahmad S , Nawaya Fehmieh R , Issa Yousef N , Massouh Lama G 
Published: December 2016

ABSTRACT

Aim
The purpose of this study was to evaluate whether the open apex measurements of the lower teeth can be used for prediction of the pubertal growth spurt.

Materials and methods
The study group consisted of 150 males and 142 females ranging in age from 10 to 16 years. A total of 292 panoramic and 292 hand-wrist radiographs were obtained and analyzed. The skeletal maturity was determined according to the skeletal maturity indicators (SMIs) developed by Fishman. The open apices measurements of the left lower teeth were made according to the method described by Cameriere.

Results
The Spearman rank order correlation coefficient revealed a relationship between the skeletal maturity stages and the open apex measurements. These correlations ranged from 0.577 for the lower second premolar to 0.830 for the lower canine. The measurement of the left lower canine showed the highest correlation, so its relationship with the SMIs was further investigated. The measurements of 6.07 (or greater) indicated to SMI4, and 2.485 (or lesser) indicated to SMI7.

Conclusion
The skeletal maturity well related to the measurements of the open apices of the lower teeth. Lower canine open apex measurements could be used as an indicator of the SMI4 and SMI7.

Clinical significance
The measurements of the open apices of the left lower canines from panoramic radiographs may be clinically useful as an indicator of the beginning and the ending of the pubertal growth period.

How to cite this article
Issa YN, Burhan AS, Nawaya FR, Massouh LG. Assessment of the Pubertal Growth Period using the Open Apices of the Lower Teeth. J Contemp Dent Pract 2017;18(1):16-22.
Prevalence and Severity of Temporomandibular Disorders among Undergraduate Medical Students in Association with Khat Chewing
Authors: Mattoo Khurshid A , Okshah Abdulmajeed S , Al-Shahrani Ahid A , Alshadidi Abdulkhaliq Ali F , Shaabi Fawzia I , Mobark Abdulaziz H 
Published: December 2016

ABSTRACT

Introduction
The aim of this study was to assess the prevalence and severity of temporomandibular joint disorders (TMDs) among undergraduate medical students in the presence of khat chewing over a period of time.

Materials and methods
Totally, 186 medical college students (age ≤ 20 years) were randomly selected for the present study. The study subjects were divided into two groups according to age, under 20 and above 20 years. The study was based on Fonseca's anamnestic index and its questionnaire, which is composed of 10 questions and classifies the severity of TMDs. The obtained data were coded and entered into Statistical Package for the Social Sciences (SPSS) program for analysis using chi-square test at significance level of 5%.

Results
Most of the participants were male (68.8%) students and older than 20 years (63%). Those who reported with khat chewing comprised 31.7%. From the total samples, only 38.0% was classified as having mild TMD and 0.50% were classified as having severe TMD. Poor dental articulation, grinding of teeth, headaches, tense personalities, and temporomandibular joint (TMJ) clicking were the most common clinical findings. The mean scores showed no significant difference among gender (p ≤ 0.29) and the khat chewing (p ≤ 0.531) groups for the 10 questions. However, it showed significant difference among age groups (p ≤ 0.025).

Conclusion
The majority of subjects complained of mild TMD, while only a few cases showed a moderate TMD among different age groups. The most frequently reported dysfunctions were related to poor dental articulation and grinding of the teeth, frequent headaches, the clicking of joint, and tense personalities. No significant difference was found between gender and khat and nonkhat chewing groups.

Clinical significance
Khat chewing is a parafunctional habit and affects dental occlusion (especially cuspal wear) in terms of anterior guidance. Such alterations in occlusion are known to be one of the causative (predisposing) factors of TMD.

How to cite this article
Al Moaleem MM, Okshah AS, Al-Shahrani AA, Alshadidi AAF, Shaabi FI, Mobark AH, Mattoo KA. Prevalence and Severity of Temporomandibular Disorders among Undergraduate Medical Students in Association with Khat Chewing. J Contemp Dent Pract 2017;18(1):23-28.
Wear Resistance of Bulk-fill Composite Resin Restorative Materials Polymerized under different Curing Intensities
Authors: Alkhudhairy Fahad 
Published: December 2016

ABSTRACTIntroductionThe aim of this study was to assess the wear resistance of four bulk-fill composite resin restorative materials cured using high- and low-intensity lights.Materials and methodsTwenty-four samples were prepared from each composite resin material (Tetric N-Ceram, SonicFill, Smart Dentin Replacement, Filtek Bulk-Fill) resulting in a total of 96 samples; they were placed into a mold in a single increment. All of the 96 samples were cured using the Bluephase N light curing unit for 20 seconds. Half of the total specimens (n = 48) were light cured using high-intensity output (1,200 mW/cm2), while the remaining half (n = 48) were light cured using low-intensity output (650 mW/cm2). Wear was analyzed by a three-dimensional (3D) noncontact optical profilometer (Contour GT-I, Bruker, Germany). Mean and standard deviation (SD) of surface loss (depth) after 120,000 cycles for each test material was calculated and analyzed using one-way analysis of variance (ANOVA) with a significance level at p < 0.05.ResultsThe least mean surface loss was observed for SonicFill (186.52 µm) cured using low-intensity light. No significant difference in the mean surface loss was observed when comparing the four tested materials with each other without taking the curing light intensity into consideration (p = 0.352). A significant difference in the mean surface loss was observed between SonicFill cured using high-intensity light compared with that cured using low-intensity light (p < 0.001).ConclusionA higher curing light intensity (1,200 mW/cm2) had no positive influence on the wear resistance of the four bulk-fill composite resin restorative materials tested compared with lower curing light intensity (650 mW/cm2). Furthermore, SonicFill cured using low-intensity light was the most wearresistant material tested, whereas Tetric N-Ceram cured using high-intensity light was the least wear resistant.Clinical significanceThe wear resistance was better with the newly introduced bulk-fill composite resins under low-intensity light curing.How to cite this articleAlkhudhairy F. Wear Resistance of Bulk-fill Composite Resin Restorative Materials Polymerized under different Curing Intensities. J Contemp Dent Pract 2017;18(1):39-43.
Comparative Study of Piezoelectric and Rotary Osteotomy Technique for Third Molar Impaction
Authors: Daniel Augustine , Adarsh VJ , Basheer Sulphi A , Govind R Jay , Rao Akshatha 
Published: December 2016

ABSTRACT

Introduction
Bone removal is necessary for extracting the third molars that are erupted, partially erupted, and/or impacted in bone. Hence, it is necessary to choose a surgical method or instruments that conform to anatomic landmarks and are based on physiological principles. Many authors have reported injuries to the adjacent tooth, especially the distal part of periodontium after removal of second molar. Hence, the present study was undertaken to assess and compare the surgical and postsurgical outcomes of third molar removal using piezoelectric surgery and rotary bur.

Materials and methods
A total of 30 healthy adult individuals who were in need of prophylactic removal of impacted mandibular third molar tooth with ideal condition were included for the study. Individuals were divided randomly into study groups of 15 each, so that the difficulty of surgery will be the same in both the groups. Group I – piezoelectric osteotomy technique and group II – rotary osteotomy technique. The rotary device consists of a hand piece and a rotary speed ranging around 35,000 rpm was used. The piezoelectric device consists of a hand piece, and a frequency of 25 to 29 kHz with a microvibration of 60 to 200 mm/sec was used with a boosted working mode. Data were analyzed using unpaired t-test and qualitative data were analyzed using Fischer's exact test.

Results
The average age of the study subjects in the piezosurgery group and rotary group was 28.40 ± 2.69 and 30.06 ± 3.15 years respectively. The time taken for removal of impacted tooth by rotary bur was less than that by piezoelectric device, which was significant statistically (p < 0.05). Until the 4th postoperative day, severity of pain experienced was more in the rotary group, which was statistically significant (p < 0.005). Mouth opening was significantly better in the piezoelectric group as compared with rotary bur until the 7th postoperative day.

Conclusion
The piezosurgery method reduces postoperative pain, trismus, and swelling. Also, it may play an important role in increasing bone density within the extraction socket and decreasing the amount of bone loss of adjacent tooth in the distal aspect.

Clinical significance
In clinical practice, piezosurgery plays an important role because piezosurgery reduces postoperative pain, trismus, and also swelling.

How to cite this article
Basheer SA, Govind RJ, Daniel A, Sam G, Adarsh VJ, Rao A. Comparative Study of Piezoelectric and Rotary Osteotomy Technique for Third Molar Impaction. J Contemp Dent Pract 2017;18(1):60-64.
Laser-based Disinfection of the Root Canal System: An Update
Authors: Jafarzadeh Hamid , Mohammadi Zahed , Shalavi Sousan , Sahebalam Rasoul , Kinoshita Jun-Ichiro 
Published: December 2016

ABSTRACTIntroductionMicroorganisms have been considered to have played a critical role in the initiation and development of pulpoperiapical diseases. Some evidences have shown that mechanical instrumentation may leave considerable portions of canal surfaces undebrided. Therefore, some supplemental methods, such as the use of chemical solutions and/or lasers, have been introduced to further disinfect the complicated canal anatomy and destroy as many microorganisms as possible. The purpose of this review was to address a brief review of characteristics of lasers and their effects to disinfect the root canal in endodontics.How to cite this articleMohammadi Z, Jafarzadeh H, Shalavi S, Sahebalam R, Kinoshita JI. Laser-based Disinfection of the Root Canal System: An Update. J Contemp Dent Pract 2017;18(1):74-77.
A New Technique for Precise Microimplant Placement
Authors: Ravindranath VK , Karandikar Girish , Joshi Divij 
Published: December 2016

ABSTRACTAimTo explore a successful, much simpler, less cumbersome, and time-consuming technique for mini-implant placement.Materials and MethodsCrimpable hook, intraoral periapical radiograph, 15 number surgical blade.ResultsVery simple and efficient technique for mini-implant placement.ConclusionThe proximity of roots in mandibular arch is major risk factor for placements of mini-implants. With the help of this technique, the proper direction and orientation of the miniimplant to be placed can be evaluated.Clinical significanceThere is no additional armamentarium required for this technique with the least clinical time for the operator providing a very efficient way for mini-implant placement.How to cite this articleJoshi D, Patni V, Karandikar G, Ravindranath VK. A New Technique for Precise Microimplant Placement. J Contemp Dent 2016;6(3):157-160.
Current Trend in fabricating a Full Ceramic Restoration for Discolored Anterior Teeth: A Dental Laboratory Survey
Authors: Nadgere Jyoti B , Shah Naisargi P , Jain Aditi JP 
Published: December 2016

ABSTRACTAimThe aim of the survey conducted in dental laboratories was to evaluate the current trend in fabricating a full ceramic restoration for discolored anterior teeth through a questionnaire and personal interaction with the dental technician.Materials and MethodsThe survey questionnaire consisted of 20 questions aimed toward the current trend in fabricating a full ceramic restoration for discolored anterior teeth. This questionnaire was validated by a panel of senior prosthodontists and technicians and was sent to 32 dental technicians in Mumbai and Navi Mumbai.Results and conclusionThe results of the study showed that majority of the dental technicians preferred taking the stump shade themselves by visiting the clinic or inviting the patient to the laboratory. Majority of the dental technicians preferred using lithium disilicate material and its medium opacity ingots to fabricate restorations by the layering technique for masking discolored anterior teeth. Majority of the technicians believed that their dentists did not use try-in paste prior to luting of the restoration.Clinical significanceThis survey would help to improve the rapport between the clinicians and dental laboratories and optimize the esthetics of the restorations fabricated for anterior discolored teeth.How to cite this articleShah NP, Jain AJP, Ram SM, Nadgere JB. Current Trend in fabricating a Full Ceramic Restoration for Discolored Anterior Teeth: A Dental Laboratory Survey. J Contemp Dent 2016;6(3):161-165.
Improving Dimensional Stability of Visible Light-cured Trial Denture Base using Different Colored Casts
Authors: Elkholy Sahar 
Published: December 2016

ABSTRACT

Purpose
This study aimed to evaluate the effects of the color of the cast on dimensional stability of visible light-cured (VLC) trial denture bases.

Materials and Methods
A total of 60 VLC acrylic resin trial denture bases were fabricated on different colored casts (20 white, 20 dark blue, and 20 dark brown casts) and were divided into two groups; each group consisted of 30 casts (10 white, 10 dark blue, and 10 dark brown). The gap between the base and the cast after 24 hours was measured at different points (left crest of the ridge, midpalatal area, and right crest of the ridge) at the posterior and premolar areas for group I and after 48 hours for group II by using a stereomicroscope.

Results
With brown cast, the trial denture base showed significant decrease in dimensional change in comparison with white and blue casts after 24 and 48 hours.

Conclusion
The dimensional accuracy of the VLC trial denture base could be improved by using dark-colored cast during construction, to ensure accurate maxillomandibular relationship and accurate evaluation of phonetics and esthetic of wax trial dentures.

How to cite this article
Elkholy S. Improving Dimensional Stability of Visible Light-cured Trial Denture Base using Different Colored Casts. J Contemp Dent 2016;6(3):171-176.
Hypophosphatasia: Rare but there
Authors: Kalra Monika , Punia Himanshu , Jhingala Vikas K , Chaudhary Suyash 
Published: December 2016

ABSTRACTHypophosphatasia (HP) is an inherited disorder characterized by defective bone and teeth mineralization and deficiency of serum and bone alkaline phosphatase (AP) activity. For severe forms, disease frequency has been estimated at 1/100,000. Symptoms of the disease are highly variable in their clinical expression ranging from stillbirth with unmineralized bone to early loss of tooth without any bone symptoms. The transmission of severe form is autosomal recessive while milder forms get transmitted as dominant or recessive autosomal traits. The diagnosis can be done by performing serum AP assay and molecular analysis of the tissue-nonspecific alkaline phosphatase (TNSALP) gene.How to cite this articleJhingala VK, Tangade P, Punia H, Gupta V, Singh V, Kalra M, Chaudhary S. Hypophosphatasia: Rare but there. J Contemp Dent 2016;6(3):184-188.
Management of Traumatized Open Apex Teeth with Mineral Trioxide Aggregate Apexification and Demineralized Freeze-dried Bone Allograft as Apical Matrix
Authors: Bolli Rashmi V , Agrawal Aanchal M 
Published: December 2016

ABSTRACTAchievement of a perfect apical seal in the case of a traumatized nonvital open apex tooth is one of the most important factors affecting its long-term success. It can be treated surgically by placing a retrofill or by a nonsurgical approach by apexification. Currently, apexification with mineral trioxide aggregate (MTA) is the treatment of choice in such cases. Herein, due to large apical diameter, limiting the MTA within the canal space is challenging, making it imperative to use a suitable apical matrix. This case report demonstrates successful management of traumatized nonvital open apex teeth with MTA apexification using demineralized freeze-dried bone allograft apical matrix.How to cite this articleBolli RV, Sumanthini MV, Shenoy VU, Agrawal AM. Management of Traumatized Open Apex Teeth with Mineral Trioxide Aggregate Apexification and Demineralized Freeze-dried Bone Allograft as Apical Matrix. J Contemp Dent 2016;6(3):194-199.
Prosthetic Rehabilitation of a Patient with Ectodermal Dysplasia
Authors: Shah Naisargi P , Nadgere Jyoti B , Parmar Bhoomi A 
Published: December 2016

ABSTRACTEctodermal dysplasia (ED) is a rare group of inherited disorders characterized by aplasia or dysplasia of two or more tissues of ectodermal origin, such as hair, nails, teeth, and skin. The dental characteristics of this syndrome include anodontia or hypodontia of the primary and/or permanent teeth, hypoplastic conical teeth, and underdevelopment of the alveolar ridges. Patients with ED have psychosocial issues due to the orofacial manifestations; therefore, restoring appearance and function is more challenging than usual. The options for a definitive treatment plan include removable, fixed, or implant-supported prostheses, single or in combination. This clinical report describes the prosthetic rehabilitation of a patient having ED.How to cite this articleNadgere JB, Parmar BA, Ram SM, Shah NP. Prosthetic Rehabilitation of a Patient with Ectodermal Dysplasia. J Contemp Dent 2016;6(3):214-219.
Tritium activity trend formation in groundwater of Quaternary aquifer system, south-eastern Lithuania
Authors: Samalavičius Vytautas , Mokrik Robert 
Published: December 2016

Radioactive decay and mixing leads to tritium activity decrease in groundwater. In south-eastern Lithuania, the unconfined layer and precipitation water tritium activity decrease rate is dominated by radioactive decay for the period of 1980–2013. Confined aquifers are vastly affected by mixing; therefore, it is hard to predicted tritium activity values. To achieve it, the monitoring type of sampling must be applied in order to calculate tritium activity gradient value. Moreover, gradient values in different sampling points along the water pathway must be similar. It is a necessary condition when comparing theoretical decay curves with actually calculated. Only the shallowest confined aquifer (ag II–III md-gr) in this study met these conditions. An additional method for modelled data interpretation was tritium peak analysis. According to the modelled tritium peak, a few possible dating water age alternatives exist. The data analysis suggests that no certain water age could be determined. The tritium peak analysis could be a helpful method to gain more comprehensive and valuable hydrogeological information.
Risk factors and Response of Branch Retinal Vein Occlusion induced Macular Edema to intravitreal injections of Triamcinolone and Bevacizumab
Authors: Prakhar Singhai , Nitin Nema , Sonam Verma , Kumar Ravindra , Raj Ankit , Malviya Rajendra 
Published: December 2016

Background:
Branch retinal vein occlusion (BRVO) is a common retinal vascular condition associated with systemic risk factors like hypertension and diabetes mellitus. It causes central visual loss primarily due to macular edema that responds to intravitreal injections of triamcinolone and bevacizumab.

Aims:
To find the risk factors and compare the effects of intravitreal injections of triamcinolone and bevacizumab in BRVO induced macular edema.

Settings and Design:
A tertiary eye center based prospective, interventional study.

Materials and Methods:
Patients of BRVO were evaluated for substance abuse and systemic vascular diseases. 40 eyes of 40 patients of BRVO received intravitreal injections of triamcinolone acetonide (IVTA, 4 mg/0.1 ml, 20 patients) or bevacizumab (IVB, 1.25 mg/0.1 ml, 20 patients) for macular edema. The patients were followed for 12 months. Best-corrected visual acuity and central macular thickness by optical coherence tomography were measured to assess the response to treatment.

Statistical Analysis:
Statistical package for the social sciences (SPSS) version 20.0 software was used to analyze the data. Wilcoxon signed rank test was performed to see the improvement in logMAR visual acuity after the treatment.

Results:
Hypertension was the commonest risk factor. Tobacco addiction, diabetes mellitus, hyperhomocyteinemia and dyslipidemia were other systemic associations of BRVO. Both IVTA and IVB were effective in reducing the macular edema and improving the vision at the end of 12-month follow-up period.

Conclusion:
Hypertension and tobacco use in various forms are important risk factors for BRVO. Both IVTA and IVB show comparable response to macular edema secondary to BRVO.