scholarly journals Comparison and testing the reliability of two non-radiographic techniques of mixed dentition space analysis in Nepalese population

2017 ◽  
Vol 13 (4) ◽  
pp. 410-415
Author(s):  
Rajeev Kumar Mishra ◽  
Vashant Devagiri
Keyword(s):  
Regression Equation ◽  
T Test ◽  
Mixed Dentition ◽  
Tooth Size ◽  
Significant Difference ◽  
Males And Females ◽  
The Difference ◽  
Predicted Values ◽  
Digital Caliper ◽  
Mixed Dentition Analysis

Background & Objectives: Mesio-distal tooth size-arch length discrepancy is one of the major sources of malocclusion. Accurate prediction of space required for unerupted tooth can help in early interception of developing malocclusion. Various methods has been proposed for prediction of mesio-distal  tooth size however accuracy of such methods  in population groups other than that on which these methods are based remains questionable. The aims and objectives   of this study were  to test the reliability of Moyer’s and Tanaka Johnston mixed dentition analysis in Nepalese  population, to construct prediction  tables for Nepalese  population if these methods were found  not reliable.Materials & Methods: Study models of 77 subjects (31 males,46 females) fulfilling the inclusion criteria were retrieved from department archive.  Tooth dimensions were measured using electronic digital caliper. Moyer’s and Tanaka and Jhonston methods were applied to predict   the   mesio- distal tooth size   of canines and premolars. The predicted values were compared with the actual mesio-distal mesio-distal size. A regression equation based on actual canine and premolar mesio-distal dimensions and sum of mandibular permanent incisors was also developed.Results: Independent t-test showed that there was no significant difference between mesio-distal tooth size in males and females. Paired t-test showed that there was no difference in mesio-distal tooth  size between right and left sides of the arch. Tanaka – Johnston analysis overestimated the  mesio-distal size in both males and females. Moyer’s method at 75% overestimated the mesio-distal size  in male and female and the difference were statistically significant  while at 50% it underestimated the tooth  size in females.Conclusion: Moyer’s and Tanaka and Jhonston method of mesio-distal size prediction are inaccurate when applied in Nepalese population. A new regression equation to predict the size of tooth has been presented.

scholarly journals A Moyers-féle vegyes fogazati analízis alkalmazhatóságának vizsgálata a magyarországi lakosság körében

2019 ◽  
Vol 160 (50) ◽  
pp. 1984-1989
Author(s):  
Zsófia Pintér ◽  
Leila Rill ◽  
Géza Vitályos ◽  
Kornélia Borbásné Farkas ◽  
Béla Kolarovszki ◽  
...  
Keyword(s):  
Mixed Dentition ◽  
Tooth Size ◽  
Predictive Values ◽  
Actual Space ◽  
Hungarian Population ◽  
Predicted Values ◽  
Unerupted Teeth ◽  
Space Requirements ◽  
Digital Caliper ◽  
Mixed Dentition Analysis

Abstract: Introduction: Moyers mixed dentition analysis is one of the most commonly used prediction methods to estimate the size of the unerupted teeth. By its use, we can determine the severity of tooth size-arch length discrepancies in mixed dentition. Since the tooth size may vary considerably among different ethnic groups, for the most precise estimation of the required space, an analysis based on the individual’s own ethnic group would be recommended. Aim: Our aim was to evaluate the applicability of Moyers mixed dentition analysis for the Hungarian population. Method: Upper and lower study casts of 370 patients were evaluated. The mesiodistal widths of the teeth were measured by using a Pittsburgh digital caliper. The odontometric values obtained were used to calculate actual and predicted values. The actual teeth measurements were then statistically compared to the predicted values derived from Moyers probability tables. Results: Using Moyers analysis, we found significant differences at each percentile between the actual and predictive values in both sexes. In the upper jaw, values for men at the 95th, 85th, 75th, and 65th percentile overestimated the actual values, while for women only the 65th percentile underestimated it. In the lower jaw, all values were overestimated in relation to the actual measurements at all percentiles. Conclusions: Based on our results, Moyers mixed dentition analysis cannot be reliably applied for the Hungarian population. If used, it is recommended to use the Moyers predicted values at the 65th instead of the 75th percentile, as this will result in closer estimation to the actual space requirements. Orv Hetil. 2019; 160(50): 1984–1989.

scholarly journals Evaluation and Applicability of Moyers Mixed Dentition Arch Analysis in Himachal Population

2014 ◽  
Vol 02 (02) ◽  
pp. 096-104
Author(s):  
Avninder Kaur ◽  
Reetu Singh ◽  
Sudhir Mittal ◽  
Sunila Sharma ◽  
Aditi Bector ◽  
...  
Keyword(s):  
Ethnic Diversity ◽  
Mixed Dentition ◽  
Permanent Teeth ◽  
Tooth Size ◽  
Dental Pathology ◽  
American Children ◽  
Predicted Values ◽  
Almost All ◽  
Digital Caliper

Abstract Introduction: The determination of a tooth-size to arch length discrepancy in mixed dentition requires an accurate prediction of the mesiodistal width of the unerupted permanent teeth. The Moyers mixed dentition space analysis is the non-radiographic method for detecting tooth-size arch length discrepancies. Moyers analysis was developed for North American children. Anthropological studies reveal that tooth size varies among different races and ethnicities. Aim: The present study was aimed to determine the applicability of Moyers mixed dentition arch analysis in children of Baddi, Himachal Pradesh. Materials and methods: Dental study models of 120 children in age group of 13- 16 years, were analysed who presented with complete eruption of permanent mandibular incisors, maxillary and mandibular canines & premolars. All dentitions were required to be free of any signs of dental pathology or anomalies. Measurements of the mesiodistal dimensions of the mandibular and maxillary teeth were made using a digital caliper with a Vernier scale that was calibrated to the nearest 0.01mm. The values were then subjected to statistical analysis. Results: All tooth groups showed highly significant differences (p<0.001) between mesiodistal widths in male and female subjects. Significant differences (p<0.05) were found between actual widths and the Moyers tables at almost all percentile levels, including the recommended 75%. Conclusion: The differences noted between predicted values from the Moyers tables and that of the present investigation might be the result of racial and ethnic diversity.

scholarly journals Bolton tooth size analysis in a sample of Sudanese adults

2021 ◽  
Vol 24 (2) ◽  
Author(s):  
Raja AbdAlgadir Mustafa ◽  
Amal Hussein Abuaffan
Keyword(s):  
Gender Differences ◽  
University Students ◽  
Size Analysis ◽  
Tooth Size ◽  
Normal Occlusion ◽  
Significant Difference ◽  
Males And Females ◽  
Overall Ratio ◽  
Mandibular Teeth ◽  
Digital Caliper

Introduction: A correct proportion between the upper and lower teeth is critical to achieving proper occlusal interdigitation, ideal overjet, and good molar intercuspation at the end of orthodontic treatment. Objectives: To determine the anterior and overall Bolton’s ratio in the Sudanese population, investigate gender differences in tooth size ratios, and to compare these results with Bolton’s original ratio norm. Material and Methods: The sample consisted of dental casts of 104 Sudanese University students with normal occlusion (52 females, 52 males), aged between 16-26 years randomly selected from AL- Neelain University. An electronic digital caliper was used to measure the mesiodistal tooth size of the maxillary and mandibular teeth anterior to the second molars. These measurements were then used to obtain Bolton’s ratio. Mean, range, and standard deviation of the anterior and overall ratios were computed for each subject. T-Tests were used to compare gender differences and to investigate differences between the results of this study and Bolton’s original ratio. Results: Anterior and overall Bolton ratios for males were 78.43±2.44 and 93.901±9.8 and for females were 78.29±2.6 and 91.67±3.3 percent, respectively. There were no statistically significant differences between males and females for the anterior and overall ratios P>0.05. The anterior and overall Bolton’s ratios among Sudanese University students were 78.37 ± 2.54, and 92.79± 7.43 percent, respectively. statistically significant difference between this study and Bolton’s study were found in both anterior and overall ratio P<0.05. Conclusion: Bolton’s mean ratios may not be applicable to Sudanese. Keywords Bolton’s ratio; Sudanese population; tooth-size.

scholarly journals Leeway Space Mandibula pada Siswa Suku Minang di Sekolah Dasar Lubuk Sikaping, Sumatera Barat

2019 ◽  
Vol 7 (2) ◽  
pp. 97-103
Author(s):  
Ayu Shafira ◽  
Hafni Bachtiar ◽  
Didin K
Keyword(s):  
Elementary School ◽  
Prediction Method ◽  
Significant Degree ◽  
T Test ◽  
Mixed Dentition ◽  
Cross Sectional ◽  
Significant Difference ◽  
The Difference ◽  
The Right ◽  
Test Result

The prediction of permanent size of theet which haven’t errupted to determine the value of place needed, availability of space and predict the storage of space. Is one of important aspect in diagnosis and treatment planning on the period of mixed dentition. Prediction method that used commonly is Moyers method which the data is taken from Kaukasoid ras. The objective of the research is to see the difference of leeway space of mandibula on Minang man and woman students of elemantary school Lubuk Sikaping. The method of this research is cross sectional comprative study. 56 samples of mandibula study are taken from the student of SDN 06 Pauh, SDN 09 Pauh, and SDN 10 Pauh Lubuk Sikaping  at  the  age  of  8  to  10  years  and  they  are  Minangnese.  The  results  are  analyzed  statistically  by  t-test  on significant degree 95%. This research indicates that the large average of man mandibula leeway space on the left (1,76 mm) and on the right (1,85 mm). And the average of leeway space of woman mandibula leeway space on the left (2,03  mm)  and  on  the  right  (2,16  mm).  The  analyze  t-test  result  on  the  significant  degree  95%  show  there  is  no significant  difference  (p>0,05)  between  man  and  woman  students.  Therefore,  it  can  be  concluded  that  the  large average of  leeway  space of  man  and  woman  mandibula  in  Minang  students of  elementary  school  Lubuk  Sikaping showed no significant difference in size.

scholarly journals Applicability of Two Mixed Dentition Analysis in Children of Jangam Community of Belgaum City

2012 ◽  
Vol 3 (4) ◽  
pp. 324-329 ◽  
Author(s):  
Santosh M Sholapurmath ◽  
Deepa B Benni ◽  
Praveen Mandroli
Keyword(s):  
Prediction Method ◽  
Mixed Dentition ◽  
Permanent Teeth ◽  
Maxillary Canine ◽  
Specific Population ◽  
Space Analysis ◽  
Indian Origin ◽  
Significant Difference ◽  
Males And Females ◽  
Mixed Dentition Analysis

ABSTRACT Background and objective Many cases of malocclusion originate during the mixed dentition period. Moyers tables and Tanaka and Johnston space analysis are the most commonly used mixed dentition space analysis. Based on the reported racial and sex differences in tooth sizes, the purpose of this study was to evaluate applicability of the Moyers, Tanaka and Johnston and method of prediction in a Belgaum population and develop a new prediction method for this specific population, if necessary. Materials and methods The study was conducted on sample of 140 children within the age group of 13 to 16 years old belonging to Jangam community, who had fully erupted mandibular permanent incisors and maxillary and mandibular canines and premolars. Mesiodistal crown widths of permanent teeth were measured using a digital calliper of resolution of 0.01 mm. The odontometric values obtained were then subjected to statistical analysis (Student unpaired t-test). Results Gender discrepancy was seen in the study with male showing significantly greater maxillary canine-premolar segment. There is statistical significant difference in tooth dimension between the actual and predicted value at the 50th and 75th percentile of the Moyers probability tables for males and females in both the arches. There were significant differences between the actual measurements and measurements derived from the Tanaka and Johnston equation. Conclusion The Moyers probability tables and Tanaka and Johnston prediction method significantly underestimate canine and premolar mesiodistal width of Jangam population, Indian origin. How to cite this article Sholapurmath SM, Benni DB, Mandroli P. Applicability of Two Mixed Dentition Analysis in Children of Jangam Community of Belgaum City. World J Dent 2012;3(4):324-329.

scholarly journals Applicability of Two Non-Radiographic Mixed Dentition Analysis Methods in Orthodontic Patients

2021 ◽  
Keyword(s):  
T Test ◽  
Mixed Dentition ◽  
Dental Arch ◽  
Cross Sectional ◽  
Gender Dimorphism ◽  
Orthodontic Patients ◽  
The Difference ◽  
The Right ◽  
Mixed Dentition Analysis ◽  
Dental Casts

Background: Using erupted components of a dental arch to estimate the width of the unerupted dental components are the basis of mixed dentition analysis. Non-radiographic mixed dentition analysis employs a regression equation to assess the width of the unerupted canines and premolars. In this study, we assessed the applicability of two non-radiographic methods of mixed dentition analysis in orthodontic patients. Methods: This cross-sectional research was carried out from the records of Ziauddin College of Dentistry, Department of Orthodontics, from November 2019 to March 2020. Pre-treatment dental casts of 120 subjects (60 males and 60 females) aged between 12-30 years undergoing orthodontic treatment were selected. The mesiodistal widths from the left first molar to the right first molar were measured using a digital Vernier caliper on pretreatment dental casts of both arches. Bachman’s and Tanaka-Johnston methods were applied to estimate the widths of canine and premolars. Gender dimorphism for actual and estimated values was assessed using an independent t-test and a paired t-test was applied for the comparison between the actual and estimated mesiodistal widths of canine and premolar. Results: The actual and estimated widths of canine and premolars reported 14.3±1.4 years for males and 13.4±1.2 years for females. In addition, the Bachman’s and Tanaka-Johnston method overestimated the actual widths of unerupted canine and premolar but the difference was statistically insignificant (p≥ 0.05) in both the genders. Conclusion: The two non-radiographic methods were reliable for mixed dentition analysis with minor overestimation between actual and estimated widths (ICC=0.79). This makes both the methods applicable interchangeably in regular clinical practice.

Effect of smoking on cardiovascular autonomic functions

2021 ◽  
Vol 9 (2) ◽  
pp. 3780-3784
Author(s):  
P.Vani ◽  
◽  
Sharan B Singh M ◽  
Keyword(s):  
Heart Rate ◽  
Autonomic Function ◽  
T Test ◽  
Resting Heart Rate ◽  
Autonomic Functions ◽  
Mean Values ◽  
Function Tests ◽  
Significant Difference ◽  
The Mean ◽  
The Difference

Introduction: Cigarette smoking is a prime risk factor for cardiovascular morbidity and mortality. Chronic smoking results in autonomic dysfunction leading to increased cardiovascular risk in smokers. The present study was planned to study the effect of smoking on the Cardiovascular Autonomic Functions among smokers. Materials and Methods: Fifty male subjects who were in the age group of 25 to 45 years. They were grouped into 25 smokers and 25 non-smokers. The participant subjects were selected among the staff members, residents and the patients from the routine OPD in SVIMS. Prior to study, they were informed about the procedure and the purpose of the study tests and written consents were obtained from them. The Cardiovascular Autonomic Function Tests were assessed by using a POLYGRAPH which was available in the department. Results and Conclusion: After applying the ‘t’-test for the difference between the two sample means, it was observed that there was a highly significant difference between the mean values of the BMI(i.e.p<0.01) and the para-sympathetic function tests among the smokers and the non – smokers(i.e.p<0.00). The Resting Heart Rate had significantly increased and the Deep breathing difference, the postural tachycardial index (Response to standing) and the Valsalva Ratio had significantly decreased in the smokers as compared to those in the non – smokers. After applying the ‘t’-test for the difference between the two sample means, it was observed that there was no significant difference between the mean values of the Postural hypotension test (i.e. p>0.05) and that there was a highly significant difference between the mean values of the Sustained handgrip test in the smokers and the non – smokers (i.e. p<0.00). KEY WORDS: Cardiovascular autonomic function tests, Smoking, Resting heart rate.

scholarly journals Adjustment among Private and Government Nursing College’s Girl Students Who Studding from Home and Hostel

2017 ◽  
Vol 5 (1) ◽  
Author(s):  
Nitesh N. Patel
Keyword(s):  
Private Sector ◽  
Stress Level ◽  
T Test ◽  
Stress Scale ◽  
Significant Difference ◽  
Correlation Result ◽  
The Difference ◽  
Girl Students

The present investigation to find out the difference of adjustment between girl students of nursing living in home and hostel. The sample constructed of 160 girl students of nursing, out of which 80 girl students of nursing living in home, 60 from girl students of nursing living in hostel for this purpose of investigation. Adjustment stress scale Bell Adjustment Inventory (BIQ) was administered to measure their adjustment stress level. Scoring has been done as per manual. The data was analyzed by statistical ‘t’ test and correlation. Result was found that, there is significant difference in level of adjustment between girl students of nursing living in home and hostel. There is more adjustment level in the girl students of nursing who living in home then living in hostel. It was also found that, there is no significant difference between level of adjustment between private sector and government sector’s girl students of nursing.

scholarly journals Effects of Negative Emotions on Cognitive Schemas

2020 ◽  
Vol 11 (1) ◽  
pp. 65-69
Author(s):  
Marius-Gabriel Amzulescu ◽  
Andreea-Ionela Chiscop ◽  
Diana-Nicol Marin ◽  
Cristina Lare ◽  
Andra-Maria Popescu
Keyword(s):  
Negative Emotions ◽  
T Test ◽  
Control Group ◽  
Core Beliefs ◽  
Cognitive Schemas ◽  
Main Research ◽  
Significant Difference ◽  
Independent Variable ◽  
The Difference ◽  
The University

The present study investigates the effect of negative emotions (focusing on disappointment, sadness and regret) on cognitive schemas. The sample consist in students from the University of Bucharest (convenience groups). A univariate unifactorial experimental design was used, as the current study had one independent variable, negative emotions, and a dependent variable, cognitive schemas, which was measured with the Core Beliefs Questionnaire instrument. We applied T test for independent samples, using SPSS. The t test was statistically significant, t (45) = 2.57, p <0.05. The confidence interval (95%) for the difference between the averages is between 2.95 and 24.35. After applying the intervention, the evaluated sample (M = 43.17, SD = 29,074) showed a statistically significant difference compared to the control group (M = 29.52, SD = 11.257). The data collected support the main research hypothesis of the study, negative emotions can bring about changes in certain cognitive schemas by modifying, altering or disrupting them.

scholarly journals The Difference of Cardiovascular Endurance between Soccer Players and Handball Players

2019 ◽  
Vol 6 (3) ◽  
pp. 5341-5346
Author(s):  
Dr. Syed Kamaruzaman Syed Ali
Keyword(s):  
Secondary School ◽  
Secondary Schools ◽  
T Test ◽  
Soccer Players ◽  
Cardiovascular Endurance ◽  
Ex Post ◽  
Significant Difference ◽  
Ex Post Facto ◽  
The Difference ◽  
Run Test

The purpose of this study was to investigate the difference of cardiovascular endurance between secondary school soccer players and handball players. The study adopted ex-post facto design. The subjects were selected among soccer and handball players at one of the secondary schools. A total of 60 subjects were selected, 30 soccer players and 30 handball players. All subjects aged between 13 and 15 years old. The test used to test cardiovascular endurance was 12 minute Cooper Run Test. T-test was used to determine whether there is a significant difference between the cardiovascular endurance of the soccer players and handball players. The results of the study showed that there was no significant difference t(-1.65)=58, P>0.05 between soccer players (M = 2235; SD = 180.44) and handball players (M = 2307.83; SD = 160.19). Although there was no significant difference, the players from both teams still have good cardiovascular endurance fitness.

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