Gingival Phenotypes Amongst Male Dental Students at Kulliyyah of Dentistry, IIUM, Malaysia

The aim of the present study was to investigate the periodontal phenotypes among young Malay males with different gingival biotypes. Forty-seven systemically and periodontally healthy young Malay males participated in this study, where 25.5% were diagnosed with thin gingival biotype and 74.5% of thick biotype. The periodontal phenotypes were measured through clinical parameters presented by the gingival thickness (GT), gingival width (GW), papilla height (PH), and crown width/crown length ratio (CW/CL). Three clusters were identified through K-means cluster ing analysis based on the parameters of the periodontal phenotypes. Cluster 1 represents narrow crown form and the average CW/CL, GW, PH and PD were 0.69, 2.92, 4.55 and 2.16 mm, respectively. Cluster 2 displayed an average of 0.76, 4.29, 4.96 and 2.14 mm for CW/CL, GW, PH and PD, respectively. Cluster 3 represents wide crown form and the average displayed for CW/CL, GW, PH and PD were 0.80, 4.85, 3.73 and 2.23 mm, respectively. There were significant differences between the three clusters (p<0.05) with respect to the GW, PH and CW/CL. This study demonstrates the difference in gingival phenotypes between young Malay males. The GW has a signiϑicant positive linear correlation (p><0.05) with CW/CL and negatively correlated with PH.><0.05) with respect to the GW, PH and CW/CL. This study demonstrates the difference in gingival phenotypes between young Malay males. The GW has a significant positive linear correlation (p<0.05) with CW/CL and negatively correlated with PH.><0.05) with CW/CL and negatively correlated with PH.

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GINGIVAL BIOTYPE- AN APPRAISAL IN THE ESTHETIC ZONE

10.36106/ijsr/8529234 ◽

2020 ◽

pp. 1-2

Author(s):

Mahesh Chavda ◽

Neeta Bhavsar ◽

Rachana Gaonkar ◽

Swapna Patki ◽

Shreeja Nair

Keyword(s):

Healthy Subjects ◽

Great Influence ◽

Morphometric Parameters ◽

Gingival Tissue ◽

Gingival Thickness ◽

Crown Length ◽

Crown Width ◽

Anterior Teeth ◽

Weak Negative Correlation ◽

Gingival Biotype

The interface between the restoration and the gingival tissue seems to have a great influence on the final outcome of various treatments. Therefore, the aim of this study was to evaluate the correlation between different morphometric parameters with the thickness of buccal gingiva at the cemento- enamel junction. In 60 periodontally healthy subjects, the six maxillary anterior teeth were examined. Clinical parameters included the gingival thickness, crown width/crown length ratio (CW/ CL), gingival width (GW), papillary height and transparency of the periodontal probe through the gingival sulcus (TRAN). A positive correlation was found between the gingival thickness (GT) and the crown width/ crown length (CW/CL) ratio as well as the papillary height (PH). A weak negative correlation was found between the transparency of probe TRAN and gingival width (GW) with the gingival thickness (GT). Thus, crown form (CW/CL) and papillary height are helpful indicators to determine the gingival thickness at the cemento- enamel junction. The transparency of probe method is subjective and cannot be relied upon for clinical application.

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Modulation of Clinical Expression of Plaque-induced Gingivitis: Effect of Incisor Crown Form

Journal of Dental Research ◽

10.1177/154405910408300914 ◽

2004 ◽

Vol 83 (9) ◽

pp. 728-731 ◽

Cited By ~ 13

Author(s):

L. Trombelli ◽

R. Farina ◽

R. Manfrini ◽

D.N. Tatakis

Keyword(s):

Length Ratio ◽

Gingival Inflammation ◽

Clinical Expression ◽

Crown Length ◽

Crown Width ◽

Experimental Gingivitis ◽

Low Responder ◽

Wide Group ◽

Bleeding Score ◽

Crown Form

Evidence indicates that incisor crown form correlates with clinical periodontal features. It was hypothesized that incisor crown form may explain subject differences in gingivitis expression. The present experimental gingivitis study aimed to assess the effect of incisor crown form on plaque accumulation and gingival inflammation, and on individual susceptibility to plaque-induced gingivitis. Eighty-five periodontally healthy subjects were evaluated. A negative correlation was found between incisor crown width/crown length ratio and bleeding score (p = 0.045). From the 85 subjects, two groups of subjects with either ‘long-narrow’ or ‘short-wide’ incisor form were identified. The ‘long-narrow’ group had a significantly higher bleeding score than the ‘short-wide’ group (p = 0.014). No significant differences were found in the incisor crown width/crown length ratio between previously identified ‘high responder’ and ‘low responder’ subjects ( Trombelli et al., 2004a ). In conclusion, incisor crown form appears to affect the bleeding response of inflamed gingival tissues, while it exerts no influence on explaining differences in individuals’ susceptibility to plaque-induced gingivitis.

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Correlation analysis of periodontal tissue dimensions in esthetic zone using a non-invasive digital method

10.21203/rs.2.16748/v1 ◽

2019 ◽

Author(s):

Yun-Jeong Kim ◽

Ji-Man Park ◽

Hyun-Jae Cho ◽

Young Ku

Keyword(s):

Alveolar Bone ◽

Digital Method ◽

Clinical Parameters ◽

Bone Thickness ◽

Gingival Thickness ◽

Periodontal Tissues ◽

Non Invasive ◽

Crown Length ◽

Crown Width ◽

Alveolar Crest

Abstract Background. Recently, direct intraoral scanning and superimposing methods have been applied to measure the dimensions of periodontal tissues. The aim of this study was to analyze various correlations between labial gingival thickness and underlying alveolar bone thickness as well as clinical parameters among the three tooth types (central incisors, lateral incisors, and canines) using the digital method. Methods. In 20 periodontally healthy subjects, cone-beam computed tomography (CB-CT) images and intraoral scanned files were obtained. Measurements of labial alveolar bone and gingival thickness at the central incisors, lateral incisors, and canines were performed at 0–5 mm points from the alveolar crest on the superimposed images. Clinical parameters including the crown width/crown length ratio (CW/CL), gingival width (GW), gingival scallop (SC), and transparency of the periodontal probe through the gingival sulcus (TRAN) were examined. Results. Gingival thickness at the alveolar crest level was positively correlated with the thickness of the alveolar bone plate (p<0.05). The central incisors revealed a strong correlation between A1 and A2 (labial alveolar bone thickness at 1 and 2 mm, respectively, inferior to the alveolar crest) with the thickness of the gingiva at the G0, whereas G0 and labial bone thickness at every level were positively correlated at the lateral incisors and canines. The correlation analyses revealed no significant correlation between the clinical parameters and the hard and soft tissue thicknesses. Conclusions. The gingival thickness at the alveolar crest level revealed a positive correlation with labial alveolar bone thickness, although this correlation at identical depth levels was not significant. The measurement of gingival thickness at, or under the alveolar crest level, was not associated with the clinical parameters of the gingival features, such as the crown form and the gingival scallop, or the keratinized gingival width. Therefore, it is recommended that, in future studies, accurate measuring methods of the supracrestal gingival area should be developed, and the predictive potential of clinical parameters on tissue thickness should be verified.

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Non-metamict uranoan pyrochlore and uranpyrochlore from tuff near Ndale, Fort Portal area, Uganda

Mineralogical Magazine ◽

10.1180/minmag.1989.053.370.14 ◽

1989 ◽

Vol 53 (370) ◽

pp. 257-262 ◽

Cited By ~ 14

Author(s):

D. D. Hogarth ◽

J. E. T. Horne

Keyword(s):

Cell Size ◽

Linear Correlation ◽

Metamorphic Rocks ◽

Portal Area ◽

Geological Age ◽

Unit Cells ◽

Positive Linear Correlation ◽

Crystalline Nature ◽

Linear Correlations

AbstractA thin (100 m) cover of flat-lying, Recent, calcite-rich tuff at Ndale near Fort Portal, Uganda, unconformably overlies steeply dipping Precambrian metamorphic rocks. It is locally radioactive owing to uranium-rich pyrochlore minerals and lesser amounts of zircon, monazite, titanite, and an unidentified thorium phosphate. In one concentrate, four grains of uranpyrochlore and one grain of uranoan pyrochlore showed a positive linear correlation of Ti with U, and negative linear correlations of Ti with Na, F and Sr. Ta remained high and relatively constant [11 anal., ave. 14.5 (0.6)% Ta2O5]. In the same concentrate the composition of a separate grain of uranoan pyrochlore did not plot on these lines and Ta was comparatively low [2 anal., ave. 4.5 (0.3)% Ta2O5]. The data suggest two separate paths of differentiation. However, zoned grains were not observed. Unit cells were cubic with a = 10.351 ± 0.002 Å for a grain with 12.9% UO2tot and 10.333 ± 0.002 Å for a grain with 26.6% UO2tot. On heating in air the cell size decreased, possibly due to oxidation of U4+. The crystalline nature of these minerals can be attributed to a very young (4000–5000 yr) geological age.

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Effect of Ultrasonic Treatment on Radon Exhalation from Porous Media: An Experimental Case Study

Sustainability ◽

10.3390/su10093005 ◽

2018 ◽

Vol 10 (9) ◽

pp. 3005

Author(s):

Ling-feng Xie ◽

Shu-liang Zou ◽

Xiang-yang Li ◽

Chang-shou Hong ◽

Hong Wang ◽

...

Keyword(s):

Porous Media ◽

Moisture Content ◽

Ultrasonic Wave ◽

Linear Correlation ◽

Experimental Results ◽

Radon Exhalation Rate ◽

Exhalation Rate ◽

Radon Exhalation ◽

Experimental Apparatus ◽

Positive Linear Correlation

Radon is internationally recognized as one of the seven seismic precursors. A self-assembly ultrasonic generator and experimental apparatus for radon measurement were utilized to explore the radon exhalation regularities of water-bearing porous media under different ultrasonic intensities. The experimental results showed that there was a coupling relationship among radon exhalation rate, moisture content, and ultrasonic frequency. With the increase of the frequency of the ultrasonic wave, its effect on the promotion of radon exhalation rate was found to be a more obviously positive linear correlation. The radon exhalation rate, which could climb to a maximum value of 0.179 Bq·m−2·s−1 in a naturally air-dried sample, increased at first and then decreased along with increased moisture content. Moreover, this study found that the ultrasonic wave had the most remarkable promoting effects on the radon exhalation rate of porous media with high moisture content, and there is a positive linear correlation between the growth rate of the radon exhalation rate and moisture content. The experimental results could provide a beneficial reference for the continual monitoring of radon in a seismically active belt and an explanation of radon anomalies; however, the proposed experimental model was simplified, so further insights are strictly required for a reliable correlation with the real monitoring of radon in a seismically active belt.

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Morphometric analysis of the sella turcica in Northeastern Brazil

10.5327/1516-3180.509 ◽

2021 ◽

Author(s):

Pablo Mariz de Oliveira ◽

Amanda do Nascimento Oliveira e Carneiro ◽

Fábio Antônio Serra de Lima Júnior ◽

Daniel Dantas da Silva ◽

Leticia Leite Cavalcante ◽

...

Keyword(s):

Pituitary Gland ◽

Linear Correlation ◽

Sella Turcica ◽

Northeastern Brazil ◽

Surgical Approaches ◽

Linear Measurements ◽

Positive Linear Correlation ◽

Skull Measurements ◽

And Gender ◽

Human Skulls

Introduction: The sella turcica is a structure of the median region of the sphenoid bone. Variations in its morphology are relevant as it is a region subjected to several surgical procedures, mainly related to the pituitary gland. Objective: To analyze the morphology of the sella turcica and its sexual dimorphism in Northeastern Brazil. Methods: Fifteen human skulls from the Federal University of Paraíba (UFPB) were used. The qualitative analysis was performed by classifying the shape of the sella turcica into three types: U, J and flattened. Morphometric data was collected and statistically analyzed to evaluate the relationship between sella morphometry and gender, and between sella and skull measurements. Values of p< 0.05) in the sella turcica length (STL) and skull length (SL), with male skulls being larger in both cases. The other linear measurements didn’t show differences between the sexes (p>0.05). There was a positive linear correlation between STL and SL, and a negative linear correlation between sella turcica width (STW) and sella turcica height (STH) and between STH and bitemporal width (BTW). Conclusion: The results point to important differences in the morphometric parameters evaluated with original findings for this population. Knowledge of the morphology of the sella is essential to plan safer surgical approaches in the pituitary gland or related anatomical structures.

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A Relationship between Resilience and Psychological Preparedness for Disaster among Airlangga University Health Faculty Students

E3S Web of Conferences ◽

10.1051/e3sconf/202020212025 ◽

2020 ◽

Vol 202 ◽

pp. 12025

Author(s):

Listyati Setyo Palupi ◽

Muhammad Noor Rahman Himawan

Keyword(s):

Disaster Management ◽

Linear Correlation ◽

Survey Method ◽

Correlation Score ◽

Resilience Scale ◽

The People ◽

Coefficient Corrélation ◽

Positive Linear Correlation ◽

Prone Area ◽

National Disaster

National Disaster Management Agency of Indonesia recorded 3,406 disasters events during in Indonesia reached. Research suggest that people who lived in the disasters prone area such as need to be well prepared both physically and psychologically in order to reduce the risk of disaster and ensure that the people are resilience. One of disasters prone area in east part of Java island is East Java Province. In East Java total of disasters occurred are 1537 case. Therefore, it is important to identify their psychological preparedness and resilience in this region. Thus, this study aims to determine whether there is a correlation between resilience with psychological preparedness for disaster. This research was conducted among Airlangga University Health Faculty Students in Surabaya, East Java. This research uses a quantitative approach with a survey method. The scale used are Brief Resilience Scale and Psychological Preparedness for Potential Disasters Scale. The results obtained from this study are that there is a positive linear correlation between resilience and psychological preparedness for disaster with 0.338 coefficient correlation score. That means if the level of resilience is high, the level of psychological preparedness for disaster will also be high. Vice versa.

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Knowledge and ability to manage medical emergencies among dental students

Journal of Oral Medicine Oral Surgery Oral Pathology and Oral Radiology ◽

10.18231/j.ijooo.2021.050 ◽

2021 ◽

Vol 7 (3) ◽

pp. 161-166

Author(s):

Chitturi Prashanthi ◽

Prashant B Patil ◽

Vajendra Joshi ◽

Kiran Kumar K R ◽

Shilpa R T

Keyword(s):

Life Support ◽

Dental Students ◽

Medical Emergency ◽

Cross Sectional Survey ◽

Chi Square ◽

Cross Sectional ◽

Significance Level ◽

Chi Square Test ◽

Medical Emergencies ◽

The Difference

: An emergency can be encountered anytime and anywhere. Minimal knowledge about medical emergency and their etiology, primary protocol for management must be known to avoid potential consequences. Hence, the present study was undertaken to compare the knowledge, and ability to handle the medical emergencies among the dental students. A cross-sectional survey was conducted among 100 randomly selected dental students (post-graduate students and interns) comprising of two groups of students those who had underwent training and those who did not. The data obtained was analyzed using the SPSS for windows version 22.0 released 2013. Independent chi square test was used for comparison of responses and independent student t-test was used for the comparison of mean scores. The significance level was set at p<0.001. : The average mean knowledge and ability score was 68% & 61.4% respectively among the participants. On further comparison of mean knowledge & ability scores between the participants with & without basic life support training, participants with BLS training showed better knowledge than those without training and the difference was statistically significant between the two groups (p<0.001%). The study found deficiencies in the knowledge and ability of untrained graduates to deal with medical emergencies as compared to trained.

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In Vitro and In Vivo Digestibility of Native Maize Starch Granules Varying in Amylose Contents

Journal of AOAC International ◽

10.1093/jaoac/90.6.1628 ◽

2007 ◽

Vol 90 (6) ◽

pp. 1628-1634 ◽

Cited By ~ 29

Author(s):

Tatsuya Morita ◽

Yusuke Ito ◽

Ian Lewis Brown ◽

Ryuichi Ando ◽

Shuhachi Kiriyama

Keyword(s):

Surface Area ◽

Linear Correlation ◽

Resistant Starch ◽

Amylose Content ◽

Starch Granules ◽

Gelatinization Temperature ◽

Maize Starch ◽

Positive Linear Correlation

Abstract Digestibility of maize starch granules with different amylose content (AL-0, 22, 54, 68, 80, or 90) was investigated. Measurement of the in vivo resistant starch (RS) content of the starches was performed using surgically prepared ileorectostomized rats. The rats were fed a purified diet containing one of the starches at 652.5 g/kg diet. The in vivo RS content was determined based on the fecal starch excretion. The dietary fiber (DF) value increased as a function of the amylose content in the starch and showed a positive linear correlation with the gelatinization temperature of the granules. In contrast, the in vitro RS content was likely to depend on both the surface area and amylose contents of the starch granules. The maximum in vitro RS content was obtained with AL-68 (54.4). In vivo RS content showed a significant correlation with the amount of in vitro RS but not in respect to the DF detected. The in vivo RS content of AL-68 (43.4) was higher than that found in AL-90 (37.8). A profound gap was observed for AL-54 between the amount of DF (6.4) and RS (in vitro = 46.6 and in vivo = 40.9) present. The results suggest that both in vitro and in vivo digestibility of maize starch is affected by the amylose content and surface area of the granules. The current evaluation suggests that the physiological occurrence of RS from maize starch might be predictable by reference to the in vitro RS value.

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A New Census of Protein Tandem Repeats and Their Relationship with Intrinsic Disorder

Genes ◽

10.3390/genes11040407 ◽

2020 ◽

Vol 11 (4) ◽

pp. 407 ◽

Cited By ~ 4

Author(s):

Matteo Delucchi ◽

Elke Schaper ◽

Oxana Sachenkova ◽

Arne Elofsson ◽

Maria Anisimova

Keyword(s):

Structural Organization ◽

Tandem Repeats ◽

State Of The Art ◽

Intrinsic Disorder ◽

Prediction Methods ◽

Intrinsically Disordered ◽

Intrinsically Disordered Regions ◽

Protein Length ◽

Positive Linear Correlation ◽

The Difference

Protein tandem repeats (TRs) are often associated with immunity-related functions and diseases. Since that last census of protein TRs in 1999, the number of curated proteins increased more than seven-fold and new TR prediction methods were published. TRs appear to be enriched with intrinsic disorder and vice versa. The significance and the biological reasons for this association are unknown. Here, we characterize protein TRs across all kingdoms of life and their overlap with intrinsic disorder in unprecedented detail. Using state-of-the-art prediction methods, we estimate that 50.9% of proteins contain at least one TR, often located at the sequence flanks. Positive linear correlation between the proportion of TRs and the protein length was observed universally, with Eukaryotes in general having more TRs, but when the difference in length is taken into account the difference is quite small. TRs were enriched with disorder-promoting amino acids and were inside intrinsically disordered regions. Many such TRs were homorepeats. Our results support that TRs mostly originate by duplication and are involved in essential functions such as transcription processes, structural organization, electron transport and iron-binding. In viruses, TRs are found in proteins essential for virulence.

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