scholarly journals Prevalence and Morphology of C-Shaped Canals: A CBCT Analysis in a Korean Population

Scanning ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Sung Eun Yang ◽  
Tae Yeon Lee ◽  
Kyung Jae Kim
Keyword(s):  
Wall Thickness ◽  
Statistical Significance ◽  
Anatomical Variations ◽  
Korean Population ◽  
Age Group ◽  
Chi Square ◽  
Root Canals ◽  
Chi Square Test ◽  
The Difference ◽  
Cbct Analysis

This retrospective study of roots with C-shaped canals investigated their prevalence, configuration type, and lingual wall thickness, as well as the panoramic radiographic features of roots in permanent mandibular second molars confirmed to have C-shaped canals on cone-beam computed tomography (CBCT) in a Korean population. In total, 1884 CBCT images of mandibular second molars were examined by two endodontists to analyze the presence of C-shaped canals according to age and sex. The bilateral occurrence of C-shaped roots and their morphology on panoramic radiography were assessed and statistically analyzed using the chi-square test. The classification of Fan et al. was applied to categorize the configurations of C-shaped canals. The lingual wall thickness was calculated in the mesial, middle, and distal areas at the orifice and at 5 mm from the apex. The Mann–Whitney U test was used to analyze the mean difference of lingual wall thickness between the apex and orifice level. A P value of 0.05 was considered to indicate statistical significance in the statistical analyses. Of 2508 mandibular second molars, 924 (36.8%) had C-shaped root canals. The prevalence was significantly lower in the over 61 age group (24.08%) than in the 21–30-year age group (40.02%) and was higher in women (42.32%). Most cases were bilateral (85.9%). The C1 type was the most common (35.3%). The prevalence of C1 type canals decreased, while that of C3b type canals increased with age. In 75.2% of teeth having C-shaped root canals on CBCT, fused roots were observed on panoramic views. The difference in the lingual wall thickness at the orifice and 5 mm from the apex was significant in the middle area in all configurations of C-shaped root canals. When performing nonsurgical or surgical endodontic procedures of the mandibular second molars, clinicians should consider age, sex, ethnicity, and anatomical variations.

scholarly journals The effectiveness of acetic acid wash protocol and the interpretation patterns of blood contaminated cervical cytology ThinPrep® specimens

CytoJournal ◽  
2015 ◽  
Vol 12 ◽  
pp. 23 ◽  
Author(s):  
Nora K. Frisch ◽  
Yasin Ahmed ◽  
Seema Sethi ◽  
Daniel Neill ◽  
Tatyana Kalinicheva ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Statistical Significance ◽  
Cervical Cytology ◽  
Low Grade ◽  
Squamous Intraepithelial Lesions ◽  
Chi Square ◽  
Chi Square Test ◽  
Acid Wash ◽  
The Difference ◽  
Intraepithelial Lesions

Background: ThinPrep® (TP) cervical cytology, as a liquid-based method, has many benefits but also a relatively high unsatisfactory rate due to debris/lubricant contamination and the presence of blood. These contaminants clog the TP filter and prevent the deposition of adequate diagnostic cells on the slide. An acetic acid wash (AAW) protocol is often used to lyse red blood cells, before preparing the TP slides. Design: From 23,291 TP cervical cytology specimens over a 4-month period, 2739 underwent AAW protocol due to initial unsatisfactory smear (UNS) with scant cellularity due to blood or being grossly bloody. Randomly selected 2739 cervical cytology specimens which did not undergo AAW from the same time period formed the control (non-AAW) group. Cytopathologic interpretations of AAW and non-AAW groups were compared using the Chi-square test. Results: About 94.2% of the 2739 cases which underwent AAW were subsequently satisfactory for evaluation with interpretations of atypical squamous cells of undetermined significance (ASCUS) 4.9% (135), low-grade squamous intraepithelial lesions (LSIL) 3.7% (102), and high-grade squamous intraepithelial lesions (HSIL) 1% (28). From the 2739 control cases, 96.3% were satisfactory with ASCUS 5.5% (151), LSIL 5.1% (139), and HSIL 0.7% (19). The prevalence of ASCUS interpretations was similar (P = 0.33). Although there were 32% more HSIL interpretations in the AAW group (28 in AAW vs. 19 in non-AAW), the difference was statistically insignificant (P = 0.18). AAW category; however, had significantly fewer LSIL interpretations (P = 0.02). The percentage of UNS cases remained higher in the AAW group with statistical significance (P < 0.01). Conclusions: While AAW had a significantly higher percent of UNS interpretations, the protocol was effective in rescuing 94.2% of specimens which otherwise may have been reported unsatisfactory. This improved patient care by avoiding a repeat test. The prevalence of ASCUS and HSIL interpretations between AAW and non-AAW groups were comparable. Though not statistically significant, HSIL interpretations were relatively higher in the AAW group. LSIL interpretations showed lower prevalence in AAW group.

scholarly journals Analysis of anatomy and configuration of the canal system of the maxillary second premolar in the population of Bosnia and Herzegovina

2021 ◽  
Vol 12 (1) ◽  
pp. 9-18
Author(s):  
Brankica Davidović ◽  
Ljiljana Bjelović ◽  
Igor Radović ◽  
Bojana Davidović ◽  
Svjetlana Janković ◽  
...  
Keyword(s):  
Bosnia And Herzegovina ◽  
Root Canal ◽  
Statistical Significance ◽  
Type I ◽  
Canal System ◽  
Chi Square ◽  
Morphological Variations ◽  
Root Canals ◽  
Single Root ◽  
Chi Square Test

Introduction. Successful endodontic treatment depends upon the clinician's knowledge and ability to recognize and diagnose the presence of anatomical and morphological variations of the root and canal system. The aim of this study was to establish the number of roots and root canal configurations of the maxillary second premolar in the population of Bosnia and Herzegovina. Methods. The study sample was comprised of 150 maxillary second premolar teeth extracted for orthodontic or prosthetic reasons. Endodontic drills were used for trepanation of cavum dentis, and the number and patency of each root canal were determined by Kexpander # 15. Then, the samples were decalcified, made transparent and colored, to enable 3D viewing of the canal system. Decalcified teeth were observed from two projections (clinical and approximal) and analyzed in detail with a magnifying glass under 3 × and 5 × magnification in order to determine the number of roots, number of canals, root canal configuration using Vertucci's classification and number of anastomoses between canals. Statistical significance was obtained using Chi-square test. Results. The results obtained by decalcification of the teeth showed that, by radiographic analysis from the clinical projection, all the teeth had a single root. While, by the analysis from the approximal projection, 94.0% had one, 6.0% two roots. From the approximal projection, 70.7% with a single root canal and 29.3% with two root canals are visualized. The most common type of root canal configuration in the maxillary second premolars was Type I in both clinical (87.9%) and approximal projection (40.7%). Conclusion. These results emphasize the importance of knowing the variations in root canal morphology, because excluding the possibility of morphological variations can lead to failure of endodontic therapy

scholarly journals Anatomical Variations of the Paranasal Sinuses and the Nasal Cavity

2019 ◽  
Vol 21 (1) ◽  
pp. 7-11
Author(s):  
Kundan Kumar Shrestha ◽  
K Acharya ◽  
RR Joshi ◽  
S Maharjan ◽  
D Adhikari
Keyword(s):  
Anatomical Variation ◽  
Anatomical Variations ◽  
P Value ◽  
Deviated Nasal Septum ◽  
Chi Square ◽  
Female Ratio ◽  
Chi Square Test ◽  
The Difference ◽  
The Right ◽  
Sinonasal Symptoms

Computed tomography (CT) of the para-nasal sinuses (PNS) has nowadays become the investigation of choice for the diagnosis of sinonasal diseases. Numerous sinonasal anatomic variants exist and are frequently seen on CT scans. A sound knowledge of these variations is important not only for diagnosis but also for planning surgery in order to avoid complications. The aim of this study is to investigate the frequency of these variations in patients with sinonasal symptoms and also to determine their relation to sinonasal disease if any. A total of 76 patients were included in the study from August 2017 to July 2018 of which 43 (56.6%) were males and while 33 (43.4%) were females with male to female ratio of 1.3:1. The ages of patients ranged from 14 to 72 years with a mean age of 33.2±14.2 years. Out of 76 patients, 68 (89.5%) had at least one type of anatomical variation while 8 (10.5%) had no variation. Only one variation was seen in 39 (51.3%) patients while 29 (38.2%) had two or more variations. The most common variant was deviated nasal septum (DNS), occurring in 49 (64.5%) patients followed by concha bullosa (CB) and agger nasi cell (AN) seen in 15 (19.7%) and 14 (18.4%) patients respectively. Genderwise, anatomical variations were seen more in males but the difference was not statistically significant. Some variations were seen more on the right side while others on the left. Some variations were present bilaterally. The difference was not statistically significant. The presence of DNS was statistically significant in the study population (p value 0.012 in nonparametric chi square test). The age group 14 to 30 years showed maximum variations though not significant statistically. Therefore, during management of patients with sinonasal symptoms, these variations need to be addressed, if required, surgically. Proper knowledge of both common and uncommon sinonasal variations in our community could help in better surgical planning and overall management of sinonasal disorders.

scholarly journals Preffered Methods of Treating Obesity in Late Adulthood and Senior Age

2021 ◽  
Vol 12 (5) ◽  
pp. 47-54
Author(s):  
J. Babecka ◽  
M. Popovicova ◽  
M. Belovicova ◽  
P. Snopek
Keyword(s):  
Physical Activity ◽  
Statistical Significance ◽  
Statistical Processing ◽  
Overweight And Obesity ◽  
Age Group ◽  
Chi Square ◽  
Obesity Therapy ◽  
Chi Square Test ◽  
Age Range ◽  
Preferred Solutions

Objective: To identify preferred solutions – therapy - for over- weight and obesity in older adults and seniors Participants: Atotal of 110 respondents were contacted, out of which 14 refused to cooperate or filled in the questionnaire incor- rectly. The return of questionnaires was 96, i.e. 100%. The group of respondents consisted of individuals of both sexes, aged 50 and over, living in anatural social environment or in one of the se- lected institutions. Due to the fact that - in our opinion - arela- tively large amount of attention is paid to the senior age group while the group of people in the age range of 50-64 is forgotten, we have not chosen the senior age respondents exclusively. Methods: The data obtained by the processing of the question- naires were analytically evaluated. For statistical processing apro- gram StatisticaCz version 9 was chosen, adescriptive analysis of the data was performed, followed by analysis by comparing av- erages and particular tests of statistical significance (Chi-square test, Kruskal Wallis, KendalovoTau). Results: An adjustment of the diet as apart of the solution of the overweight and obesity therapy would be chosen by the most re- spondents, 75 (46.5%) of them. 44 (27.0%) respondents would choose sport or other physical activity. 11 (6.7%) respondents would deal with overweight and obesity pharmacologically - with the help of medications, and only 25 (15.3%) respondents would choose surgery as away of dealing with overweight and obesity. On the contrary, only 8 (4.9%) respondents were not interested in dealing with the weight gain. 24 (25.0%) respondents would choose the surgical way of solving obesity. Ananswer“possibly yes”was chosen by13 (13.5%) respondents. 21 (21.9%) individu- als inclined to the “rather not” variant. 33 (34.4%) respondents chose the “certainly not”answer. An answer“I don't know” was chosen by 5 (5.2%) respondents. Conclusion:Obesity is aglobal social problem which is not to be solved just in healthcare and it is certainly not an issue of an individual.

scholarly journals The Resilience of Adolescent Participants in Social Projects for Sport

2020 ◽  
Vol 25 (3) ◽  
pp. 901-908 ◽  
Author(s):  
Ewerton Dantas Cortês Neto ◽  
Maihana Maira Cruz Dantas ◽  
Rodrigo da Silva Maia ◽  
Irami Araújo Filho ◽  
Eulália Maria Chaves Maia
Keyword(s):  
Statistical Significance ◽  
Male Gender ◽  
Age Group ◽  
Structured Interviews ◽  
Chi Square ◽  
Significance Level ◽  
Resilience Scale ◽  
The Social ◽  
Chi Square Test ◽  
Sociodemographic Profile

Abstract The aim of this study was to evaluate the resilience of adolescents participants and non-participants of social projects for sports relating it to their sociodemographic profile. Cross-section Study, comparative and analytical, covered 134 adolescents, from ages 12 to 17, residing in a social zone of high vulnerability in a Northeastern Brazilian city. The data collected was obtained through structured interviews and a questionnaire/resilience scale, developed by Wagnild and Young (1993). The descriptive and inferential statistical analysis was used, especially the Student ‘T’ Test for the independent samples and the chi-square test. In both cases, the statistical significance level adopted was p < 0.05. The overall mean resilience was 110.6 (±15.9) and the participants in social projects demonstrated better resilience (p = 0.063), with a predominance of male gender, age group 15 to 17 years old, without health problems, parents (father/mother) self-employed, retired, pensioner or unemployed with income less than 1 minimum wage, without alcohol/cigarette and other drugs. The participants of the social projects presented a better level of resilience, even though there were several unfavorable situations and many risks presented as well.

scholarly journals Root Anatomy and Root Canal Configuration of Human Permanent Mandibular Premolars: A Systematic Review

2013 ◽  
Vol 2013 ◽  
pp. 1-14 ◽  
Author(s):  
Jojo Kottoor ◽  
Denzil Albuquerque ◽  
Natanasabapathy Velmurugan ◽  
Jacob Kuruvilla
Keyword(s):  
Systematic Review ◽  
Anatomic Variation ◽  
Case Reports ◽  
Statistical Significance ◽  
Middle Eastern ◽  
Root Anatomy ◽  
Chi Square ◽  
Root Canals ◽  
Pubmed Database ◽  
Chi Square Test

Introduction. Mandibular premolars have been reported with complex anatomical aberrations, making them one of the most difficult teeth to manage endodontically. Methodology. An exhaustive search was undertaken to identify associated anatomic studies of mandibular premolars through MEDLINE/PubMed database using keywords, and a systematic review of the relevant articles was performed. Chi-square test with Yates correction was performed to assess the statistical significance of any anatomic variations between ethnicities and within populations of the same ethnicity. Documented case reports of variations in mandibular premolar anatomy were also identified and reviewed. Results. Thirty-six anatomic studies were analyzed which included 12,752 first premolars and nineteen studies assessing 6646 second premolars. A significant variation in the number of roots, root canals, and apical foramen was observed between Caucasian, Indian, Mongoloid, and Middle Eastern ethnicities.The most common anatomic variation was C-shaped canals in mandibular first premolars with highest incidence in Mongoloid populations (upto 24%) while dens invaginatus was the most common developmental anomaly. Conclusions. A systematic review of mandibular premolars based on ethnicity and geographic clusters offered enhanced analysis of the prevalence of number of roots and canals, their canal configuration, and other related anatomy.

scholarly journals A cross sectional study on the precocious puberty among girls in the age group of 11-15 years, in two schools in Kollam

2017 ◽  
Vol 4 (5) ◽  
pp. 1603
Author(s):  
Jeffy Binu ◽  
Sonia Raichel Thomas
Keyword(s):  
Human Development ◽  
Precocious Puberty ◽  
Statistical Significance ◽  
Cross Sectional Study ◽  
P Value ◽  
Age Group ◽  
Sectional Study ◽  
Chi Square ◽  
Cross Sectional ◽  
Chi Square Test

Background: Puberty is the period during which human development progresses, from the first pubertal sign to full sexual maturation. Precocious puberty is a common problem affecting up to 29 per 100 000 girls per year. The objective of this study is to find out the prevalence of precocious puberty among school going girls and to find out relation with various risk factors.Methods: A cross sectional study was conducted by enrolling 250 school going girls by selecting one school each from urban and rural setup. Prevalence of precocious puberty was expressed in percentage and Chi square test was applied to check association. P value for statistical significance was fixed at P<0.05.Results: The prevalence of precocious puberty was found to be 10.4%. In urban it was found to be 12.35% and in rural it was 8.43%. Girls whose fathers have primary education are risky to have precocious puberty (P<0.049). Those students who take fish occasionally, that is once or thrice in a week were more prone to have precocious puberty (P<0.000). Prevalence of Precocious puberty is more in rural area when compared to urban area. Parents, especially fathers who were less educated should take of care of their daughter’s health by not giving them dried and junk foods. It is better to take fish daily, rather than once or thrice in a week, occasional consumption of fish is found to be a reason for precocious puberty.Conclusions: Prevalence of Precocious puberty was 10.4%. Fathers of the girls, who are not well educated and occasional fish consumption of girls was found to be the significant reason for Precocious puberty.

Skull and Face Injuries and Associated Factors in Pedestrian Victims of Traffic Accidents: A Single Trauma Center Analysis

2020 ◽  
Vol 2 (1) ◽  
pp. 53-59
Author(s):  
Josimara A. de Araújo Varela ◽  
Tatiana F.T. Palitot ◽  
Smyrna L.X. de Souza ◽  
Alidianne F.C. Cavalcanti ◽  
Alessandro L. Cavalcanti
Keyword(s):  
Medical Records ◽  
Associated Factors ◽  
Traffic Accidents ◽  
Age Group ◽  
Chi Square ◽  
Cross Sectional ◽  
Significance Level ◽  
The Face ◽  
Chi Square Test ◽  
The City

Objective: This study aimed to analyze the presence of lesions in the skull and face and the associated factors in pedestrian victims of traffic accidents. Methods: A cross-sectional, descriptive-analytical study carried out through the analysis of medical records of pedestrian victims of traffic accidents in an emergency service in the city of Campina Grande, Brazil, during the year of 2016. Information was collected regarding gender, age group, day of the week, time of the accident, type of vehicle involved, presence of trauma to the skull and face, and outcomes. The Chi-square and Fisher's Exact tests were used, with a significance level of 5%. Results: A total of 1,884 medical records were evaluated, out of which 7.1% (n = 133) involved pedestrians. Men were the most frequent victims (68.4%), and victims of age 60 years old or over (30.5%) predominated. Almost one-third of the cases were recorded during the weekends (30.5%), and the most prevalent time was at night (52.7%). Regarding the type of vehicle involved, motorcycles predominated (47.4%). Head trauma was present in 37.6% of victims, while facial injuries corresponded to 8.2%. In 12% of cases, the victims died. The variables of gender, age group, occurrence on weekends, and trauma to the face showed a statistically significant association with the occurrence of traffic accidents (Chi-square test; p<0.05). Conclusion: Among pedestrian victims of traffic accidents, there is a predominance of men aged 65 years or over. Accidents are frequent at night, and motorcycles are the main vehicles involved. The presence of trauma to the skull and face regions is high.

Performance of Abbreviated Protocols Versus Unenhanced MRI in Detecting Occult Breast Lesions of Mammography in Patients with Dense Breasts

2021 ◽  
Author(s):  
Suhong Zhao ◽  
Peipei Chen ◽  
Guangrui Shao ◽  
Baijie Li ◽  
Huikun Zhang ◽  
...  
Keyword(s):  
Reading Time ◽  
Area Under The Curve ◽  
Lesion Size ◽  
Lower Sensitivity ◽  
Chi Square ◽  
Dense Breast Tissue ◽  
Negative Findings ◽  
Chi Square Test ◽  
The Difference ◽  
Sensitivity Specificity

Abstract Objective: To assess the diagnostic ability of abbreviated protocols of MRI (AP-MRI) compared with unenhanced MRI (UE-MRI) in mammographically occult cancers in patients with dense breast tissue.Materials and Methods: The retrospective analysis consisted of 102 patients without positive findings on mammography who received preoperative MRI full diagnostic protocols (FDP) between January 2015 and December 2018. Two breast radiologists read the UE, AP, and FDP. The interpretation times were recorded. The comparisons of the sensitivity, specificity and area under the curve of each MRI protocol, and the sensitivity of these protocols in each subgroup of different size tumors used the Chi-square test. The paired sample t-test was used for evaluating the difference of reading time of the three protocols.Results: Among 102 women, there were 68 cancers and two benign lesions in 64 patients and 38 patients had benign or negative findings. Both readers found the sensitivity and specificity of AP and UE-MRI were similar (p>0.05), whereas compared with FDP, UE had lower sensitivity (Reader 1/Reader 2: p=0.023, 0.004). For different lesion size groups, one of the readers found that AP and FDP had higher sensitivities than UE-MRI for detecting the lesions ≤10 mm in diameter (p=0.041, p=0.023). Compared with FDP, the average reading time of UE-MRI and AP was remarkably reduced (p < 0.001).Conclusion: AP-MRI had more advantages than UE-MRI to detect mammographically occult cancers, especially for breast tumors ≤10 mm in diameter.

Abstract 14721: Impact of Covid-19 on Cardiology Consultation in Tertiary Care Hospital of a Developing Country

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
ghufran adnan ◽  
Osman Faheem ◽  
Maria Khan ◽  
Pirbhat Shams ◽  
Jamshed Ali
Keyword(s):  
Emergency Department ◽  
Tertiary Care ◽  
Reduction Rate ◽  
Care Hospital ◽  
Chi Square ◽  
Coronary Syndrome ◽  
Significant Difference ◽  
Drastic Increase ◽  
Chi Square Test ◽  
The Difference

Introduction: COVID-19 pandemic has overwhelmed the healthcare system of Pakistan. There has been observation regarding changes in pattern of patient presentation to emergency department (ED) for all diseases particularly cardiovascular. The aim of the study is to investigate these changes in cardiology consultations and compare pre-COVID-19 and COVID-19 era. Hypothesis: There is a significant difference in cardiology consultations during COVID era as compared to non-COVID era. Method: We collected data retrospectively of consecutive patients who visited emergency department (ED) during March-April 2019 (non-COVID era) and March-April 2020 (COVID era). Comparison has been made to quantify the differences in clinical characteristics, locality, admission, type, number, and reason of Cardiology consults generated. Results: We calculated the difference of 1351 patients between COVID and non-COVID era in terms of cardiology consults generated from Emergency department, using Chi-square test. Out of which 880 (59%) are male with mean age of 61(SD=15). Analysis shows pronounced augmentation in number of comorbidities [Hypertension(6%), Chronic kidney disease (6%), Diabetes (5%)] but there was 36% drop in total cardiology consultations and 43% reduction rate in patient’s ED visit from other cities during COVID era. There was 60% decrease in acute coronary syndrome presentation in COVID era, but fortuitously drastic increase (30%) in type II myocardial injury has been noted. Conclusion: There is a remarkable decline observed in patients presenting with cardiac manifestations during COVID era. Lack in timely care could have a pernicious impact on outcomes, global health care organizations should issue directions to adopt telemedicine services in underprivileged areas to provide timely care to cardiac patients.

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