bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Histological and Clinical Evaluation of Plasma as a Graft Holding Solution and Its Efficacy in Terms of Hair Growth and Graft Survival
Authors: Garg Anil Kumar , Garg Seema 
Published: September 2019

Abstract
Background There is a time lag between hair follicle harvesting and implantation, during this time hair follicles suffer ischemic injury. We need a holding medium or a solution to minimize or neutralize ischemic injury.
Aims and Objective To evaluate plasma as a graft holding solution in terms of its efficacy in hair growth and hair graft survival.
Method and Material A split scalp study was performed. The left side was designated as the control area (Group A) where grafts implanted were kept in Ringer’s lactate, and the right side behaved as the test area (Group B) and received grafts preserved in autologous plasma. The p-value was calculated.
Observations MTT staining for grafts stored in Ringer’s lactate at 12 and 72 hours showed poor hair follicle cells’ survival while grafts kept in plasma showed viable cells even after 72 hours.The hair count and density in plasma group were significantly higher than those in the Ringer’s lactate group. There was an improvement in hair thickness in both groups from 6 months to 12 months.
Conclusion Autologous plasma is an easily available graft holding solution. Platelets along with the plasma provide multiple growth factors promoting epithelialization, neovascularization, and action on hair follicle stem cells to improve growth. The fibrin coating around the graft makes it sticky and prevents dehydration. The split scalp controlled study certainly shows the advantages of using plasma over other extra cellular graft holding solutions.
Effect of In-Office Bleaching on Color and Surface Roughness of Composite Restoratives
Authors: Hafez Randa , Ahmed Doa , Yousry Mai , El-Badrawy Wafa , El-Mowafy Omar 
Published: September 2019

Objectives: The purpose of this study was to determine color changes and surface roughness of composites when they were subjected to in-office bleaching.Methods: 12 discs 15 mm in diameter and 2 mm thick were prepared from two shades (A2 & A4) of two composites, Durafil VS (DF) and TPH3 (TPH). Specimens were polished and stored in distilled water for 24 hours at 37°C before being subjected to bleaching, staining, and re-bleaching. Each of the groups of specimens (DF-A2, DF-A4, TPH-A2 and TPH-A4) were subdivided into three subgroups (n=4) and bleached with Beyond, LumaWhite-Plus, and Opalescence-Boost. Specimens were then stained by immersing them in a coffee solution for 48 hours at 37°C, and then they were re-bleached. Colorimetric measurements were performed at baseline, after bleaching, after staining, and after rebleaching. Surface roughness was determined with environmental SEM before and after bleaching. Data were statistically-analyzed.Results: None of the bleaching systems notably changed the color of composites (delta-E<2). Coffee staining affected DF specimens more than TPH. Stained specimens showed variable responses to whitening with no significant color change observed with TPH (delta-E<2) and significant changes observed with DF. Surface roughness significantly changed with bleaching, but the degree varied according to composite shade and bleaching agent.Conclusions: Three in-office bleaching agents had no significant color changes on two composites. DF showed more color change than TPH when immersed in coffee. Stained composites showed different degrees of whitening, with DF showing more response. Bleaching may adversely affect the surface texture of composites. Dentists should take into consideration that composite restorations may not respond to bleaching in the same way that natural teeth do. (Eur J Dent 2010;4:118-127)
Colour Stability of Veneering Composites after Accelerated Aging
Authors: Papadopoulos Triantafillos , Sarafianou Aspasia , Hatzikyriakos Andreas 
Published: September 2019

Objectives: To investigate the colour stability of four indirect composite restorative materials after accelerated aging.Methods: Four indirect composites (Gradia, Signum+, HFO and Adoro) were used. For each material, six specimens were prepared and subjected to accelerated aging (Suntest CPS+, Atlas, Chicago, IL, USA) according to ISO 7491. A Dr. Lange Microcolor Data Station colorimeter (Braive Instruments, Liege, Belgium) was used to measure specimen colour before and after aging. Measurements were performed according to the CIE L*a*b* system, and the mean L*, a* and b* values for each material were calculated. The equation ΔΕ = [(ΔL*)2 + (Δa*)2 + (Δb*)2]1/2 was used to measure the total colour change (ΔΕ), where ΔL*, Δa* and Δb* are the differences in the respective values before and after aging. One-way ANOVA were used to determine statistically significant differences in ΔL*, Δa*, Δb* and ΔΕ.Results: No statistically significant differences were found in ΔL*, Δa*, Δb* and ΔΕ among the materials tested (PΔL*=.063; PΔa*=.521; PΔb*=.984 and PΔE=.408). After aging, Gradia specimens showed an increase in lightness (ΔL*=0.36) and a green-yellow shift (Δa*=-1.18, Δb*=0.6), while Signum+ specimens exhibited an increase in lightness (ΔL*=0.5) and a green-blue shift (Δa*=-0.9, Δb*=- 0.45). HFO specimens exhibited an increase in lightness (ΔL*=0.75) and a green-yellow shift (Δa*=- 1.3, Δb*=0.06), and Adoro specimens exhibited an increase in lightness (ΔL*=2.07) and a green-yellow shift (Δa*=-1.3, Δb*=0.68).Conclusions: Colour changes were found to be within accepted values of perceptibility and clinical acceptance after accelerated aging, and no statistically significant differences were found in ΔL*, Δa*, Δb* and ΔΕ among the materials tested. (Eur J Dent 2010;4:137-142)
Effectiveness of Two Methods for Preparation of Autologous Platelet-Rich Plasma: An Experimental Study in Rabbits
Authors: Nagata Maria J. H. , Messora Michel R. , Furlaneto Flávia A. C. , Fucini Stephen E. , Bosco Alvaro F. , Garcia Valdir G. , Deliberador Tatiana M. , de Melo Luiz G. N. 
Published: September 2019

Objectives: The purpose of this study was to compare the quantity and quality of platelets in platelet- rich plasma (PRP) samples prepared using either the single- or the double-centrifugation protocol.Methods: Ten adult white New Zealand rabbits were used. Ten ml of blood were drawn from each animal via cardiac puncture. Each blood sample was divided into two equal parts for PRP preparation: 5 ml of blood were centrifuged according to a single-centrifugation protocol (Group I), and 5 ml were centrifuged according to a double-centrifugation protocol (Group II). Manual platelet counts were performed on the whole blood and PRP samples of each group. Smears were also done on all samples in order to see the morphology of the platelets. The data obtained in the manual platelet count were submitted to statistical analysis (repeated measures ANOVA, Tukey, P<.05).Results: The average whole blood platelet count was 446,389/μl. The PRP samples in Group II presented an average platelet amount significantly higher than that of Group I (1,986,875 ± 685,020/μl and 781,875 ± 217,693/μl, respectively). The PRP smears from Group II were the only one to present platelets with altered morphology (75% of the smears). A few lymphocytes with increased cytoplasm were observed in the PRP smears of both Groups I (25% of the smears) and II (62.5% of the smears).Conclusions: Within the limits of this study, it can be concluded that the double-centrifugation protocol resulted in higher platelet concentrations than did the single-centrifugation protocol. However, the double-centrifugation protocol caused alterations in platelet morphology and was more sensitive to small processing errors. (Eur J Dent 2010;4:395-402)
The Effect of Irradiation Distance on Microhardness of Resin Composites Cured with Different Light Curing Units
Authors: Cekic-Nagas Isil , Egilmez Ferhan , Ergun Gulfem 
Published: September 2019

Objectives: The aim of this study was to compare the microhardness of five different resin composites at different irradiation distances (2 mm and 9 mm) by using three light curing units (quartz tungsten halogen, light emitting diodes and plasma arc).Methods: A total of 210 disc-shaped samples (2 mm height and 6 mm diameter) were prepared from different resin composites (Simile, Aelite Aesthetic Enamel, Clearfil AP-X, Grandio caps and Filtek Z250). Photoactivation was performed by using quartz tungsten halogen, light emitting diode and plasma arc curing units at two irradiation distances (2 mm and 9 mm). Then the samples (n=7/ per group) were stored dry in dark at 37°C for 24 h. The Vickers hardness test was performed on the resin composite layer with a microhardness tester (Shimadzu HMV). Data were statistically analyzed using nonparametric Kruskal Wallis and Mann-Whitney U tests.Results: Statistical analysis revealed that the resin composite groups, the type of the light curing units and the irradiation distances have significant effects on the microhardness values (P<.05).Conclusions: Light curing unit and irradiation distance are important factors to be considered for obtaining adequate microhardness of different resin composite groups. (Eur J Dent 2010;4:440-446)
Cephalometric Comparison of Pharyngeal Airway in Snoring and Non-Snoring Patients
Authors: Kurt Gokmen , Sisman Cemal , Akin Erol , Akcam Timur 
Published: September 2019

ABSTRACTObjectives: To compare the skeletal and the airway structures of the non-snoring individuals with simple snoring and patients with obstructive sleep apnea (OSA). Methods: The first group consisted of 20 simple snoring cases (mean age: 37.5±8.05 years; max: 50 years, min: 21 years), the second group consisted of 20 OSA cases (mean age: 40.0±8.28 years; max: 54 years, min: 27 years) and the third group consisted of 20 individuals without any respiration problems (mean age: 29.6±3.20 years; max: 35 years, min: 24 years). In the cephalometric films, 4 skeletal and 14 airway space measurements were done. The control group and the study groups were compared using the Dunnett t test, and the groups with snoring problems were compared using the Bonferroni test. Results: No statistically significant differences were found between the three groups in skeletal measurements. The OSA and simple snoring groups showed no significant differences in airway measurements. The OSA group showed significantly increased soft palate angulation when compared with the control group (P<.05). Soft palate length, soft palate thickness and soft palate height were significantly higher in the OSA samples than in the control group (P<.001). Pharyngeal spaces in the soft palate area had the significantly lowest values in the OSA group. Inferior pharyngeal space distances in the control group were greater than in both study groups. The OSA group showed the most inferiorly positioned hyoid bone and the difference between OSA and control groups was significant (P<.01). Conclusions: The decreased airway dimension in the soft palate area due to increased soft palate volume must be taken into consideration in treatment planning of OSA patients. (Eur J Dent 2011;5:84-88)
Using Composite Resin Inclined Plane for the Repositioning of a Laterally Luxated Primary Incisor: A Case Report
Authors: Arikan Volkan , Sari Saziye 
Published: September 2019

ABSTRACTThis case report describes the repositioning of a laterally luxated primary central incisor with occlusal interference, using a composite inclined plane. The patient was a 4-year-old girl who applied to our clinic three days after the injury. Because of the time delay between injury and presentation, it was not possible to reposition the tooth with pressure. Following a root-canal treatment, an inclined plane was prepared on the lower primary incisors, using composite resin. The tooth was repositioned in two weeks, and the inclined plane was then removed. After 1 year of follow-up, the treatment was found to be successful, both clinically and radiographically. The use of a composite inclined plane, accompanied by careful follow-up, is an effective alternative to extraction for laterally luxated primary incisors with occlusal interference. (Eur J Dent 2011;5:117-120)
Natal and Neonatal Teeth: A Retrospective Study of 15 Cases
Authors: Basavanthappa Nagaveni N , Kagathur Umashankara , Basavanthappa Radhika N , Suryaprakash Satisha T 
Published: September 2019

ABSTRACTObjectives: To present 17 natal/neonatal teeth in 15 patients and describe their clinical characteristics, associated disorders, complications and treatment. Methods: A retrospective study of neonates who visited the Department of Pedodontics and Preventive Dentistry, College of Dental Sciences, Davangere, India, between 2003 and 2006 was carried out. It was a study of clinical data, such as the age and gender of the patients, the history and chief complaints of mothers, the clinical appearance and location of natal/neonatal teeth, and associated complications and treatments. Results: A total of 17 teeth (6 natal, 11 neonatal) were found in 15 patients. No significant gender predilection (8 male, 7 female) was found. Sixteen natal/neonatal teeth were placed in mandibular incisor area (10 on the right side and 6 on the left side) and one tooth in the maxillary incisor area. In 13 patients, the occurrence of natal/neonatal teeth was unilateral, and in 2 patients, it was bilateral. Three cases were associated with enamel hypoplasia, 3 cases with Riga-Fede disease, and 1 case with gingival hyperplasia. One case involved a patient with cleft lip and palate. Radiographic examination confirmed these teeth to be supernumerary, and all teeth exhibited hypermobility. Extraction had been done in all the cases. Eleven of the extracted teeth exhibited only rudimentary roots, and six teeth showed no roots. Conclusions: The occurrence of a natal/neonatal tooth is a rare phenomenon. When it occurs, the teeth have a variety of clinical characteristics and lead to different complications. Knowledge of the management of these structures is essential for the overall well being of a child. (Eur J Dent 2011;5:168-172)
Hardness, polymerization depth, and internal adaptation of Class II silorane composite restorations as a function of polymerization protocol
Authors: Bechtold Janaina , dos Santos Priscila Jaques , Anido-Anido Andrea , Hipólito Vinícius   Di , Alonso Roberta  Caroline Bruschi , D’Alpino Paulo  Henrique Perlatti 
Published: September 2019

ABSTRACTObjectives: To evaluate the influence of various photoactivation techniques on the internal gap, Knoop-hardness, and polymerization depth of silorane-and methacrylate-based composites in Class II restorationsMethods: Preparations were made in third molars (n = 10), according to composites (Filtek P60: methacrylate; Filtek P90: silorane) and photoactivation techniques (OC: occlusal photoactivation (control); OBL: occlusal+buccal+lingual photoactivation; and BLO: buccal+lingual+occlusal photoactivation (transdental)). Composites were inserted in two increments, both individually photoactivated for 20s. After 24h, specimens were sectioned and the ratio of internal gaps to interface length (%) recorded. Hardness was tested across the transversal section of restorations (1-4 mm below the surface)Results: Silorane restorations showed significantly lower gaps compared with methacrylate, regardless of polymerization technique (P<.05). Supplementary energy dose in OBL and BLO protocols caused significant increase in gaps in silorane restorations (P<05). For methacrylate restorations, OBL activation caused significantly higher gap formation (P<.05). Significantly lower hardness values were seen for silorane than for methacrylate composites (P<.05), regardless of depth and photoactivation. Significantly higher hardness values were seen in BLO activation for methacrylate restorations compared with control (P<05); for silorane, no differences were observed. Significantly higher hardness values were observed at 1 and 3 mm compared to 2 and 4 mm for both compositesConclusions: Internal gaps and hardness are affected by composite type and photoactivation. Despite the reduced values, hardness of silorane is not influenced by photoactivation or by depth. Internal gaps are dependent on the energy dose for both composites, with silorane showing lower internal gaps. (Eur J Dent 2012;6:133-140)
Prevalence of early childhood caries and associated risk factors in preschool children of urban Bangalore, India: A cross-sectional study
Authors: Prakash Prashanth , Subramaniam Priya , Durgesh B H , Konde Sapna 
Published: September 2019

ABSTRACTObjectives: Early childhood caries (ECC) is a devastating form of dental decay with multi-factorial origin. The aim of this cross-sectional study is to investigate the prevalence and related risk factors of ECC in preschool children of urban Bangalore (India)Methods: A random sample of 1,500 children aged between 8 and 48 months were selected from various parts of urban Bangalore. The status of dental caries was recorded according to the World Health Organization (WHO) criteria. Information regarding oral hygiene practices, feeding habits, socio-economic status, birth weight, and educational status of the mother was obtained through a structured questionnaire given to mothers of preschool children. The data was subjected to statistical analysis using the Statistical package for social sciences (SPSS) version 12Results: The prevalence of ECC in preschool children was 27.5%, while the mean deft was 0.854. ECC increased significantly with age. Children whose mothers had no schooling and those who belonged to low socioeconomic group showed higher caries prevalence. A significant increase in caries prevalence was found in children accustomed to the practice of on-demand breast feeding and bottle feeding at night. Caries also increased significantly when snacks were consumed between meals. However, increased frequency of tooth-brushing, parental supervision, use of a baby toothbrush, and fluoridated dentifrice significantly decreased caries prevalenceConclusion: ECC is a serious public health problem in this population and measures to increase awareness should be undertaken. The target candidates for oral health promotion programs should include mothers, general dentists, pediatricians, nurses, primary care health workers, care-takers at day-care centers and gynecologists. (Eur J Dent 2012;6:141-152)
Enhanced retention of a maxillofacial prosthetic obturator using precision attachments: Two case reports
Authors: Murat Sema , Gurbuz Ayhan , Isayev Abulfaz , Dokmez Bahadir , Cetin Unsun 
Published: September 2019

ABSTRACTThe majority of maxillary defects can be rehabilitated with conventional simple obturator prosthesis. However, inadequate retention, stability and support may be associated with the use of an obturator. Precision attachments have been used to retain obturators for some time. The use of precision attachments in a dentate maxillectomy patient can yield significant functional improvement while maintaining the obturator’s aesthetic advantages. This clinical report describes the prosthetic rehabilitation of two maxillary defects with an obturator retained using extracoronal resilient precision attachments. (Eur J Dent 2012;6:212-217)
Missed duodenal web with foreign body impaction in an operated case of midgut malrotation with Down′s syndrome - A diagnosis delayed by endoscopy
Authors: Kesan Krushnakumar , Gupta Abhaya , Gupta Rahul Kumar , Kothari Paras , Ranjan Ritesh , Karkera Parag , Mudkhedkar Kedar 
Published: September 2019

ABSTRACT“Always look for duodenal obstruction in a case of malrotation”, this dictum has to be followed. The patient was operated for midgut malrotation at day 2 of life followed by foreign body removal by upper gastrointestinal endoscopy at 2 years of age. We report atwo and half year male child with Down′s syndrome who presented to us with history suggestive of recurrent upper gastrointestinal tract obstruction. During surgery a post sphincteric duodenum web was confirmed and foreign body (berry seed) which had impacted proximal to it was removed. The web was excised and the duodenum, split longitudinally, sutured transversely. The postoperative course was uneventful and patient is asymptomatic at follow up. This case illustrates that diagnosis was delayed for 2΍ years after initial presentation in early neonatal age. (Dig Endosc 2013;4(1):10–12)
Gastrojejunostomy stomal polyp presenting as stomal obstruction and its endoscopic management
Authors: Noor Mohd Talha , Patel Onkar Prasad , Thakur Bhagwan Singh 
Published: September 2019

ABSTRACTWe report the case of a 42-year-old male who presented with postprandial, non bilious, non projectile vomiting for 4 months. Patient underwent gastrojejunostomy 10 years back for post corrosive gastric outlet obstruction. General physical and systemic examinations were within normal limits. Routine laboratory investigations including complete blood count, liver and renal function tests were also within normal limits. Upper gastrointestinal endoscopy revealed solitary pedunculated polyp at the gastrojejunostomy site almost completely obstructing the lumen at the gastrrojejunostomy site. Endoscopic snare polypectomy of the gastrojejunostomy site polyp was done. Histopathological examination of the polyp was suggestive of hyperplastic polyp. After snare polypectomy patient became asymptomatic and is doing well at 6 months of follow up. (J Dig Endosc 2013;4(2):42-43)
Assembly and comparative analyses of the mitochondrial genome of Castanospermum australe (Papilionoideae, Leguminosae)
Authors: Zhang Rong , Jin Jian-Jun , Moore Michael J. , Yi Ting-Shuang 
Published: September 2019

Plant mitochondrial genomes are often difficult to assemble because of frequent recombination mediated by repeats. Only a few mitochondrial genomes have been characterised in subfamily Papilionoideae of Leguminosae. Here, we report the complete mitochondrial genome of Castanospermum australe A.Cunn. & C.Fraser, an important medicinal and ornamental species in the Aldinoid clade of Papilionoideae. By mapping paired-end reads, seven hypothetical subgenomic conformations were rejected and two hypothetical complete isometric mitochondrial genome conformations that differed by a 64-kb inversion were strongly supported. Quantitative assessment of repeat-spanning read pairs showed a major conformation (MC1) and a minor conformation (MC2). The complete mitochondrial genome of C. australe was, thus, generated as 542 079 bp in length, with a high depth of coverage (~389.7×). Annotation of this mitochondrial genome yielded 58 genes encoding 37 proteins, 18 tRNAs and three rRNAs, as well as 17 introns and three medium-sized repeats (133, 119 and 114 bp). Comparison of 10 mitochondrial genomes from Papilionoideae demonstrated significant variation in genome size, structure, gene content and RNA editing sites. In addition, mitochondrial genes were shown to be potentially useful in resolving the deep relationships of Papilionoideae.