bluuebunny/crossref_metadata_2025_split huggingface dataset:
Relationship between the Occlusal Plane corresponding to the Lateral Borders of the Tongue and Ala-tragus Line in Edentulous Patients
Authors: Abi-Ghosn Carole , Makzoumé Joseph E 
Published: November 2012

ABSTRACTAimDefinitions of the ala-tragus line (ATL) cause confusion, because the exact points of reference for this line do not agree. This study determined the relationship between the prosthetic occlusal plane (OP) corresponding to the lateral borders of the tongue and ATL which was established by using the inferior border of the ala of the nose and (1) the superior border of the tragus (ATL 1), (2) the tip (ATL 2) and (3) the inferior border of the tragus (ATL 3).Materials and methodsNeutral zone moldings using phonation and autopolymerizing acrylic resin were recorded and leveled with the lateral borders of the tongue. Lateral cephalometric radiographs were taken of each subject by a standard method. Tracings were obtained on acetate paper to show the prosthetic OP and the three ATLs. The relationship between the prosthetic OP and each of ATL was measured for each subject. Mean and standard deviation values were then calculated for the relationship. Statistical analysis was performed using repeated measure analysis of variance followed by Bonferroni pairwise comparisons and Student's t-test (α = 0.05).ResultsSignificant difference was found between the three mean angles (p = 0.001). There was no significant difference between the mean angle (5.00° ± 4.38) formed by OP and ATL 2, and the mean angle (4.90° ± 3.50) formed by OP and ATL 3 (p = 1.00) which revealed the smallest.ConclusionThe findings of this study indicated that ATLs, extending from the inferior border of the ala of the nose to (1) the tip of the tragus of the ear, and (2) the inferior border of the tragus presented the closest relationship to the prosthetic OP corresponding to the lateral borders of the tongue.Clinical significanceWhen the ATL is used for orientation of the OP in denture construction, it would seem preferable to define it as running from the inferior border of the ala of the nose to the tip or to the inferior border of the tragus of the ear.How to cite this articleAbi-Ghosn C, Zogheib C, Makzoumé JE. Relationship between the Occlusal Plane corresponding to the Lateral Borders of the Tongue and Ala-tragus Line in Edentulous Patients. J Contemp Dent Pract 2012;13(5):590-594.
The Effect of Composite Fiber Insertion along with Lowshrinking Composite Resin on Cuspal Deflection of Root-filled Maxillary Premolars
Authors: Oskoee Siavash Savadi , Ajami Amir Ahmad , Oskoee Parnian Alizadeh , Navimipour Elmira Jafari , Zonuz Gazale Ahmadi , Bahari Mahmood , Pournaghiazar Fatemeh 
Published: November 2012

ABSTRACT

Aim
The aim of the present study was to evaluate the effect of three methods of composite fiber placement along with siloranebased composite resin on cuspal deflection and fracture strength of root-filled maxillary premolars.

Materials and methods
Mesio-occluso-distal cavities were prepared in 60 extracted premolars subsequent to endodontic treatment. The remaining thickness of buccal and lingual walls at height of contour was 2.5 ± 0.2 mm and the gingival cavosurface margin was 1.5 mm coronal to cementoenamel junction. Subsequent to measurement of primary intercuspal distances, the teeth were randomly divided into four groups. In group 1, the cavities were only filled with Filtek Silorane composite resin. In the other three groups, preimpregnated glass fibers were placed at gingival, middle and occlusal thirds respectively, and the cavities were restored similar to the group 1. Cuspal deflection was recorded in micrometer using a stereomicroscope. Fracture strength of the samples was measured in Newton subsequent to thermocycling. Data was analyzed using Kruskal-Wallis, Mann-Whitney U, one-way ANOVA and post-hoc Tukey tests at a significance level of p < 0.05.

Results
The highest cuspal deflection was recorded in the group 1, and the difference between group 1 and other groups was significant (p < 0.001). Fracture resistance in group 4 was significantly higher than that in other groups (p < 0.001).

Conclusion
In restoring root-filled premolars with siloranebased composite resins, cuspal deflection decreased with the use of preimpregnated glass fibers.

Clinical significance
Using preimpregnated glass fibers along with silorane-based composite resin may lead to better results in cuspal deflection and fracture resistance of endodonticallytreated maxillary premolars.

How to cite this article
Oskoee SS, Oskoee PA, Navimipour EJ, Ajami AA, Zonuz GA, Bahari M, Pournaghiazar F. The Effect of Composite Fiber Insertion along with Low-shrinking Composite Resin on Cuspal Deflection of Root-filled Maxillary Premolars. J Contemp Dent Pract 2012;13(5):595-601.
In vitro Antifungal Activity of Two Tissue Conditioners Combined with Nystatin, Miconazole and Fluconazole against Candida albicans
Authors: Pharande Amol , Chopde Narendra , Khade Mayur N , Khadtare Yogesh R , Shah Sanket S , Apratim Abhishek 
Published: November 2012

ABSTRACT

Aim
To determine and compare antifungal activity of two tissue conditioners combined with nystatin, miconazole and fluconazole against Candida albicans.

Materials and methods
Two tissue conditioners Viscogel and GC Soft combined with nystatin, miconazole and fluconazole were tested against Candida albicans using agar core inhibition diameter assay. One-way analysis of variance followed by Tukey's post-hoc test was used to test the intergroup difference. p-value < 0.05 was considered statistically significant.

Results
Maximum inhibition was seen in the fluconazole groups followed by miconazole and the least inhibition was seen in case of nystatin group.

Conclusion
Tissue conditioners when mixed with antifungal agents showed satisfactory inhibition of Candida albicans.

Clinical significance
Incorporation of antifungal drugs into tissue conditioners shows good inhibition of C. albicans and can be recommended for clinical use.

How to cite this article
Chopde N, Pharande A, Khade MN, Khadtare YR, Shah SS, Apratim A. In vitro Antifungal Activity of Two Tissue Conditioners Combined with Nystatin, Miconazole and Fluconazole against Candida albicans. J Contemp Dent Pract 2012;13(5):695-698.
Pulp Stone—An Endodontic Challenge: Successful Retrieval of Exceptionally Long Pulp Stones measuring 14 and 9.5 mm from the Palatal Roots of Maxillary Molars
Authors: Patil Anand , Nanjannawar Lalita G , Nanjannawar Girish S , Vagarali Hemanth , Prathasarathy Bharath 
Published: November 2012

ABSTRACT
Pulp stones are nodular, calcified masses commonly appearing in the coronal pulp and occasionally extending in radicular pulp. Retrieval of pulp stones remains a challenge for the endodontist as complete cleaning and shaping of root canal system is the bases for successful endodontic therapy. The aim of this case report is to show the retrieval of long pulp stones measuring 14 and 9.5 mm by utilizing synergistic effect of ultrasonics and sodium hypochlorite from the palatal roots of maxillary molars. Such case has not been reported in the literature so far.

How to cite this article
Nanjannawar GS, Vagarali H, Nanjannawar LG, Prathasarathy B, Patil A, Bhandi S. Pulp Stone—An Endodontic Challenge: Successful Retrieval of Exceptionally Long Pulp Stones measuring 14 and 9.5 mm from the Palatal Roots of Maxillary Molars. J Contemp Dent Pract 2012;13(5):719-722.
Orthodontic and Surgical Treatment of a Patient with Apert Syndrome
Authors: Kaya Demet , Taner T , Aksu M , Keser EI , Tuncbilek G , Mavili ME 
Published: November 2012

ABSTRACT
The aim of this case report was to present the combined orthodontic and surgical treatment of a patient with Apert syndrome in an adult stage. A 15 years old male patient with Apert syndrome was concerned about the appearance of his face and malocclusion. His profile was concave with a retruded maxilla and prominent lower lip. He had an Angle class I molar relationship with a 9.5 mm anterior open bite. The amount of crowding was 20.4 mm in the maxilla and 6 mm in the mandible. Cephalometric analysis revealed a skeletal Class III relationship due to maxillary hypoplasia with a dolichofacial growth pattern. Orthodontic treatment and orthognathic surgery were planned for the patient. After 45 months of presurgical orthodontics, the patient underwent two surgeries sequentially. The first surgery was performed to advance the maxilla and the second surgery was performed to correct the mandibular rotation and increase the overbite at the time of removing halo device. The amount of maxillary advencement was 8 mm. Mandibula was moved 1.5 mm anteriorly and rotated 1° to 1.5° (SNB and facial depth) in a counterclockwise direction. After a relatively long treatment, an esthetically pleasing and functional occlusion and correction of the skeletal problem was achieved in this adult case.

How to cite this article
Kaya D, Taner T, Aksu M, Keser EI, Tuncbilek G, Mavili ME. Orthodontic and Surgical Treatment of a Patient with Apert Syndrome. J Contemp Dent Pract 2012; 13(5):729-734.
Lung Cancer Genotype-Based Therapy and Predictive Biomarkers: Present and Future
Authors: Cagle Philip T. , Allen Timothy Craig 
Published: November 2012

Context.—The advent of genotype-based therapy and predictive biomarkers for lung cancer has thrust the pathologist into the front lines of precision medicine for this deadly disease.Objective.—To provide the clinical background, current status, and future perspectives of molecular targeted therapy for lung cancer patients, including the pivotal participation of the pathologist.Data Sources.—Data were obtained from review of the pertinent peer-reviewed literature.Conclusions.—First-generation tyrosine kinase inhibitors have produced clinical response in a limited number of non–small cell lung cancers demonstrated to have activating mutations of epidermal growth factor receptor or anaplastic lymphoma kinase rearrangements with fusion partners. Patients treated with first-generation tyrosine kinase inhibitors develop acquired resistance to their therapy. Ongoing investigations of second-generation tyrosine kinase inhibitors and new druggable targets as well as the development of next-generation genotyping and new antibodies for immunohistochemistry promise to significantly expand the pathologist's already crucial role in precision medicine of lung cancer.
The origins and genetic distinctiveness of the chamorros of the Marianas Islands: An mtDNA perspective
Authors: Vilar Miguel G. , Chan Chim W , Santos Dana R , Lynch Daniel , Spathis Rita , Garruto Ralph M , Lum J Koji 
Published: November 2012

AbstractBackground:Archaeological and linguistic evidence suggests the Marianas Islands were settled around 3,600 years before present (ybp) from Island Southeast Asia (ISEA). Around 1,000 ybp latte stone pillars and the first evidence of rice cultivation appear in the Marianas. Both traditions are absent in the rest of prehistoric Oceania.Objective:To examine the genetic origins and postsettlement gene flow of Chamorros of the Marianas Islands.Methods:To infer the origins of the Chamorros we analyzed ∼360 base pairs of the hypervariable‐region 1 (HVS1) of mitochondrial DNA from 105 Chamorros from Guam, Rota, and Saipan, and the complete mitochondrial genome of 32 Guamanian Chamorros, and compared them to lineages from ISEA and neighboring Pacific archipelagoes from the database.Results:Results reveal that 92% of Chamorros belong to haplogroup E, also found in ISEA but rare in Oceania. The two most numerous E lineages were identical to lineages currently found in Indonesia, while the remaining E lineages differed by only one or two mutations and all were unique to the Marianas. Seven percent of the lineages belonged to a single Chamorro‐specific lineage within haplogroup B4, common to ISEA as well as Micronesia and Polynesia.Conclusions:These patterns suggest a small founding population had reached and settled the Marianas from ISEA by 4,000 ybp, and developed unique mutations in isolation. A second migration from ISEA may have arrived around 1,000 ybp, introducing the latte pillars, rice agriculture and the homogeneous minority B4 lineage. Am. J. Hum. Biol., 2013. © 2012Wiley Periodicals, Inc.
Health and adult productivity: The relation between adult nutrition, helminths, and agricultural, hunting, and fishing yields in the Bolivian Amazon
Authors: Tanner S. , Rosinger A. , Leonard W.R. , Reyes‐García V. ,   Taps Bolivia Study Team
Published: November 2012

AbstractObjectives:Infectious disease and nutritional stress have both been associated with reductions in adult work productivity and work capacity in the context of wage labor, but less research has investigated their effects among groups relying on more traditional subsistence practices of horticulture and foraging. In this article, we examine the relations among measures of adult nutritional status (BMI, skinfold measurements, and fat‐free mass) and infection (presence of soil transmitted helminth infections) and measures of adult work productivity.Methods:As part of a larger panel study among Tsimane', a foraging–horticulturalist group in the Bolivian Amazon, health surveys, anthropometric information, and the quantity of products (both crops and game) brought into the household were collected for 320 Tsimane' adults over a four‐month period in 2003. In addition, a single fecal sample was collected for a sub‐sample of 86 adults.Results:Our analysis shows mixed associations between either BMI or the presence of parasitism and reported adult productivity. Muscularity was not clearly related to adult productivity. In contrast, body fatness (Skinfold z‐score) was inversely associated with the average quantity of fish and game brought into the household, especially for men.Conclusions:These findings suggest that the effects of adult infection and nutritional stress may be less clearly identified outside of the context of wage labor. Further research linking adult physical activity levels and metabolic rates to productivity in diverse contexts is needed. Am. J. Hum. Biol., 2013. © 2012Wiley Periodicals, Inc.
C‐reactive protein by pregnancy and lactational status among Filipino young adult women
Authors: Kuzawa Christopher W. , Adair Linda S. , Borja Judith , Mcdade Thomas W. 
Published: November 2012

AbstractObjectives:Pregnancy and lactation involve adaptations in immune regulation, but little is known about cross‐cultural variation in inflammatory changes during pregnancy or lactation. Here we report concentrations of C‐reactive protein (CRP) in a large cross‐sectional sample of healthy Filipino women who vary in parity, gestational, and lactational status, and who come from a population previously described as having low CRP.Methods:Fasting plasma CRP was measured among female participants (ages 20.8–22.4 years) in the Cebu Longitudinal Health and Nutrition Survey (n = 822).Results:Median CRP was 0.2 mg/l in nulliparous women and peaked at 2.0 mg/l in women in their 3rd trimester of pregnancy. Parous but post‐partum women had higher CRP compared to nulliparous women, which was largely explained by body composition differences as reflected in waist circumference and skinfold measures. Among post‐partum women with infants, CRP was similar in women who were currently breastfeeding compared to those who were not.Conclusions:At Cebu, women late in gestation have 10‐fold higher C‐reactive protein compared to nulliparous women, with no evidence that lactation is inflammatory. These population‐based findings are similar with findings from prior clinic‐based studies and are consistent with the maternal immunological adaptations initiated during pregnancy. The tendency of human females to spend more time than females of other great apes in gestation rather than lactation suggests that the human life history strategy involved increased time spent by reproductively aged females in a pro‐inflammatory state. Am. J. Hum. Biol., 2013. © 2012Wiley Periodicals, Inc.
X‐band dielectric and microwave‐absorbing properties of the incompletely carbonized polyacrylonitrile cloth
Authors: Huang Zhibin , Kang Wenbo , Tang Xiufeng , Qing Yuchang , Luo Fa 
Published: November 2012

AbstractIncompletely carbonized polyacrylonitrile (PAN) cloths were prepared by heating stabilized PAN cloth at 600–800°C in different atmosphere. Their X‐band dielectric and microwave‐absorbing properties were investigated. Results showed that the complex permittivity constantly increased with the increasing heating temperature due to the growth of carbon sheets. Conversely, the cloths carbonized in air exhibit lower complex permittivity than those carbonized in nitrogen because the reaction with oxygen restricts the progress of carbonization. The reflection loss below −10 dB can be obtained in X band for the sample carbonized at 650°C for 2 h in air. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Nanostructured thermosetting epoxy systems modified with poly(isoprene‐b‐methyl metacrylate) diblock copolymer and polyisoprene‐grafted carbon nanotubes
Authors: Espósito Leandro H. , Ramos José A. , Mondragon Iñaki , Kortaberria Galder 
Published: November 2012

AbstractNanostructured thermosetting composites based on an epoxy matrix modified with poly(isoprene‐b‐methyl methacrylate) (PI‐b‐PMMA) block copolymer were prepared through PI block segregation. Morphological structures were examined by means of atomic microscopy force microscopy. As epoxy/pristine multi‐walled carbon nanotubes (MWCNT) systems were found to present big agglomerations, with a very poor dispersion of the nanofiller, epoxy/PI‐b‐PMMA/MWCNT systems were prepared by using polyisoprene‐grafted carbon nanotubes (PI‐g‐CNT) to enhance compatibility with the matrix and improve dispersion. It was found that the functionalization of MWCNT with grafted polyisoprene was not enough to totally disperse them into the epoxy matrix but an improvement of the dispersion of carbon nanotubes was achieved by nanostructuring epoxy matrix with PI‐b‐PMMA when compared with epoxy/MWCNT composites without nanostructuring. Nevertheless, some agglomerates were still present and the complete dispersion or confinement of nanotubes into desired domains was not achieved. Thermomechanical properties slightly increase with PI‐g‐CNT content for nanostructured samples, whereas for nonnanostructured epoxy/PI‐g‐CNT composites they appeared almost constant and even decreased for the highest nanofiller amount due to the presence of agglomerates. Compression properties slightly decreased with block copolymer content, while remained almost constant with nanofiller amount. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Structure–property relationship of polyetheramines as clay‐swelling inhibitors in water‐based drilling fluids
Authors: Peng Bo , Luo Ping‐Ya , Guo Wen‐Yu , Yuan Qiuyue 
Published: November 2012

AbstractThe influences of structure parameters of polyetheramines as clay‐swelling inhibitors in water‐based drilling fluids on the application performances were studied. Interactions of polyetheramines with clays were investigated through elemental analysis (EA), X‐ray diffraction (XRD), and thermogravimetric analysis (TGA). The results showed that lower molecular weight, hydrophobic oxypropylene segment, and plentiful amino group of polyetheramines favored improvement of inhibitive properties, enhancement of adsorption abilities, and expelling interlayer bound waters of clays (as confirmed by cutting rolling test, bentonite inhibition test, EA, XRD, and TGA studies). Simultaneously, the polyetheramines did not produce adverse effect to filtration control of the drilling fluids. In addition, XRD patterns revealed that these polyetheramines could intercalate into interlayer spaces of clays and display a monolayer arrangement. The corresponding basal spacing of clays was correlated only with molecular weight of polyetheramines. The dense loading of polyetheramines in the interlayer of clays was beneficial in improving inhibitive properties. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Thermomechanical and shape memory properties of thermosetting shape memory polymer under compressive loadings
Authors: Fulcher J. T. , Karaca H. E. , Tandon G. P. , Lu Y. C. 
Published: November 2012

AbstractShape memory polymers (SMPs) are an emerging class of active polymers that may be used for a range of reconfigurable structures. In this study, the thermomechanical and shape memory behavior of a thermosetting SMP was investigated using large‐scale compressive tests and small‐scale indentation tests. Results show that the SMP exhibits different deformation modes and mechanical properties in compression than in tension. In glassy state, the SMP displays significant plastic deformation and has a much higher modulus and yield strength in comparison to those obtained in tension. In rubbery state, the SMP behaves like a hyperelastic material and again has a much higher modulus than that obtained in tension. The SMPs were further conditioned separately in simulated service environments relevant to Air Force missions, namely, (1) exposure to UV radiation, (2) immersion in jet‐oil, and (3) immersion in water. The thermomechanical and shape recovery properties of the original and conditioned SMPs were examined under compression. Results show that all the conditioned SMPs exhibit a decrease in Tg as compared to the original SMP. Environmental conditionings generally result in higher moduli and yield strength of the SMPs in the glassy state but lower modulus in the rubbery state. In particular, the UV exposure and water immersion, also weaken the shape recovery abilities of the SMPs. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Resistivity relaxation behavior of carbon black filled high‐density polyethylene conductive composites
Authors: Liang Ji‐Zhao , Yang Quan‐Quan 
Published: November 2012

AbstractThe variation of resistivity for high‐density polyethylene (HDPE) conductive composites filled with carbon black (CB) with time was investigated under the excitation of different temperature field. The movement of CB particles in the HDPE matrix was not a momentary equilibrium process, but a relaxation process. The relaxation of resistivity of the composites was monotonic, and it could be described by an exponential form above melting temperature. However, the relaxation of resistivity was nonmonotonic below melting temperature, herein a parameter t0 which was the beginning time of the resistivity attenuation could be introduced into the exponential equation. The attenuation of resistivity at constant temperature was limited for the composites with certain content of CB. The resistivity of the composites would incline to a constant value with the prolongation of time no matter what the heat treatment temperature was. Heating rate had influence on the relaxation of resistivity of the composites, and the lower heating velocity resulted in less time to approach to the equilibrium resistivity. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Enantioseparation of Four Organophosphonate Derivatives on N‐(3,5‐Dinitrobenzoyl)‐ l‐leucine–n‐Propylamide Stationary Phase by Molecular Modeling
Authors: Liu Bing , Zhou Yong , Yang Guo‐Sheng , Aboul‐Enein Hassan Y. 
Published: November 2012

ABSTRACTFour groups of organophosphonate derivatives enantiomers were separated on N‐(3,5‐dinitrobenzoyl)‐S‐leucine chiral stationary phase. The three‐dimensional structures of the complexes between the single enantiotopic chiral compounds and chiral stationary phase have been studied using molecular model and molecular dynamics simulation. Detailed results regarding the conformation, auto‐docking, and thermodynamic estimation are presented. The elution order of the enantiomer could be determined from the energy. The predicted chiral discrimination was obtained by computational results. Chirality 25:101–106, 2013. © 2012 Wiley Periodicals, Inc.