scholarly journals Evaluation of the degree of fusion of midpalatal suture at various stages of cervical vertebrae maturation

2019 ◽  
Vol 9 ◽  
pp. 235-240
Author(s):  
Khyati Narula ◽  
Siddarth Shetty ◽  
Nandita Shenoy ◽  
N. Srikant
Keyword(s):  
Cervical Vertebrae ◽  
Skeletal Age ◽  
Kappa Statistics ◽  
Kendall’S Tau ◽  
Kendall's Tau ◽  
Midpalatal Suture ◽  
Rapid Palatal Expansion ◽  
South Indian ◽  
Lateral Cephalograms ◽  
B Test

Introduction: Rapid palatal expansion was initially done during circumpubertal age. However, the correct evidence suggests visualizing the patency of midpalatal suture (MPS) radiologically at different chronological age as there can be early or late fusion of suture in some cases. Objective: This study was aimed at assessing the fusion of MPS at different stages of cervical vertebrae maturation and to find any correlation between them from the patients of two South Indian districts. Design and Setting: A total of 144 subjects aged 10–20 years were included in our study. Materials and Methods: Skeletal age based on cervical vertebrae was assessed from lateral cephalograms. MPS staging was done by two observers using cone-beam computed tomography at 2-time intervals. Inter- and intra- examiner reliability for suture staging was analyzed by kappa statistics. Correlation of skeletal age to sutural maturation was done using Kendall’s tau-b test. Results: A fair agreement was obtained by kappa test for inter (0.313) and intraexaminer reliability (0.219 for first and 0.451 for the second observer) for 144 subjects. Kendall’s tau-b test showed a significant correlation between skeletal age and suture maturation, with the maximum association between CS 4 skeletal age and Stage C of MPS, with P < 0.001. Conclusion: A strong correlation was found between skeletal age and sutural fusion. Predominantly, Stage C coincided with CS 4 with greater gender predilection toward females.

scholarly journals Hubungan Faktor Risiko Dental Ergonomi dengan Keluhan Subjektif Musculoskeletal Disorders (MSDs) pada Dental Assistant

2021 ◽  
Vol 3 (2) ◽  
pp. 50-57
Author(s):  
Dhidit Kresno Waskito ◽  
Sutrisno Sutrisno ◽  
Aryani Widayati ◽  
Siti Sulastri
Keyword(s):  
Risk Factors ◽  
Musculoskeletal Disorders ◽  
P Value ◽  
Kendall’S Tau ◽  
Cross Sectional ◽  
Kendall's Tau ◽  
Dental Assistant ◽  
Subjective Complaints ◽  
Dental Assistants ◽  
B Test

One of the hazards in dentistry is dental ergonomic. A working problem that can be caused by ergonomic hazards is Musculoskeletal Disorders (MSDs). The dental assistant is one of the jobs that have a risk for the occurrence of abnormalities in the musculoskeletal system. Based on the preliminary study on dental assistants that work in Pontianak City showed that 85% of people had musculoskeletal complaints on the legs, 71,4% had complaints on the calf, and 57,1% had complaints on the shoulder and upper back. The aim of this research is to find out the correlation between risk factors of dental ergonomics and subjective complaints of Musculoskeletal Disorders (MSDs) on dental assistants. The type of this research was a quantitative study with an analytical observational approach using a cross-sectional design. The research was conducted in Pontianak City in August 2021. The population of this research is 48 respondents and the samples were chosen using the total sampling technique. The instrument that used in this research were collected from the risk factors of dental ergonomics and Nordic Body Map (NMB) questionnaires which were later analyzed using Kendall's tau-b test. The result of this research is risk factors of dental ergonomics in the low category is 54,20%. The subjective complaints of Musculoskeletal Disorders (MSDs) in the low category is 68,80%. Based on Kendall's tau-b test showed that P. Value is 0,601 > 0,05 it means that there is no correlation between risk factors of dental ergonomics and subjective complaints of Musculoskeletal Disorders (MSDs). The conclusion of this research is there is no correlation between risk factors of dental ergonomics and subjective complaints of Musculoskeletal Disorders (MSDs) on dental assistants. For further research is expected to examine other risk factors that can cause subjective complaints of Musculoskeletal Disorders (MSDs). Salah satu unsur bahaya dalam dunia kedokteran gigi adalah dental ergonomi. Masalah kerja yang dapat ditimbulkan akibat bahaya ergonomi adalah Musculoskeletal Disorders (MSDs). Pekerjaan dental assistant merupakan salah satu pekerjaan yang memiliki risiko untuk terjadinya keluhan pada sistem musculoskeletal. Hasil studi pendahuluan pada dental assistant yang bekerja di wilayah Kota Pontianak menunjukkan bahwa 85% responden mengalami keluhan musculoskeletal pada bagian kaki, 71,4% pada bagian betis, dan 57,1% pada bagian bahu dan punggung atas. Tujuan penelitian ini adalah untuk mengetahui hubungan antara faktor risiko dental ergonomi dengan keluhan subjektif Musculoskeletal Disorders (MSDs) pada dental assistant. Jenis penelitian ini adalah penelitian  kuantitatif dengan pendekatan observasional analitik menggunakan rancangan cross-sectional. Penelitian ini dilakukan di Kota Pontianak pada bulan Agustus 2021. Populasi dalam penelitian ini adalah 48 responden dan pengambilan sampel menggunakan teknik total sampling. Instrumen dalam penelitian ini menggunakan kuesioner faktor risiko dental ergonomi dan kuesioner Nordic Body Map (NBM). Analisis data menggunakan uji Kendall’s Tau-B. Hasil dari penelitian ini adalah faktor risiko dental ergonomi berada pada kategori rendah (54,20%). Keluhan subjektif Musculoskeletal Disorders (MSDs) berada pada kategori rendah (68,80%). Hasil analisis data menunjukkan nilai P. Value sebesar 0,601 > 0,05 sehingga tidak terdapat hubungan antara faktor risiko dental ergonomi dengan keluhan subjektif Musculoskeletal Disorders (MSDs). Kesimpulan dari penelitian ini adalah tidak terdapat hubungan yang bermakna antara faktor risiko dental ergonomi dengan keluhan subjektif Musculoskeletal Disorders (MSDs) pada dental assistant. Penelitian selanjutnya diharapkan dapat mengkaji faktor-faktor risiko lain yang dapat menyebabkan keluhan subjektif Musculoskeletal Disorders (MSDs).  

scholarly journals Development and validation of a formula for objective assessment of cervical vertebral bone age

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Raghavan Chandrasekar ◽  
Shyamala Chandrasekhar ◽  
K. K. Shantha Sundari ◽  
Poornima Ravi
Keyword(s):  
Cervical Vertebrae ◽  
Objective Assessment ◽  
Bone Age ◽  
Chronological Age ◽  
Strong Positive Correlation ◽  
Vertebral Bone ◽  
Indian Patients ◽  
South Indian ◽  
Lateral Cephalograms ◽  
Significant Difference

Abstract Background and aim Determination of skeletal maturity and bone age from cervical vertebrae has been well documented. Most methods described use subjective evaluation of morphological characteristics of cervical vertebrae and may be prone to variability and error. A few objective methods have also been developed, specific for certain populations and genders. The aim of this study was to establish and validate an objective method to determine cervical vertebral bone age from lateral cephalometric radiographs, for Asian South Indian patients of both genders. Methods Ninety boys and 90 girls between 9 and 15 years of age were recruited, and their lateral cephalograms were taken. Using measurements made from the third and fourth cervical vertebrae, a formula to determine cervical vertebral bone age was derived using stepwise regression analysis. To validate the formula, a separate sample of 30 boys and 30 girls was chosen, and hand-wrist radiographs and lateral cephalograms were obtained. Cervical vertebral bone age (CVBA) was determined by applying the formula derived. Bone age was also calculated using the Tanner-Whitehouse 3 method. The bone ages determined by both methods were compared to each other and chronological age, using one-way ANOVA, Tukey’s post hoc analysis, and Pearson’s correlation coefficient. Results The formulae derived in the current study to determine CVBA differed for both genders. No statistically significant difference was found between CVBA, bone age derived by the Tanner-Whitehouse 3 method, and chronological age for both boys (p value = 0.425) and girls (p value = 0.995). A moderate to strong positive correlation was found between CVBA, bone age, and chronological age. Conclusion The formulae derived in this study were validated and are reliable for objectively determining cervical vertebral bone age and skeletal maturation from lateral cephalograms for Asian South Indian patients of both genders.

scholarly journals Hubungan Faktor Risiko Dental Ergonomi dengan Keluhan Subjektif Musculoskeletal Disorders (MSDs) pada Dental Assistant

2021 ◽  
Vol 3 (2) ◽  
pp. 50-57
Author(s):  
Dhidit Kresno Waskito ◽  
Sutrisno Sutrisno ◽  
Aryani Widayati ◽  
Siti Sulastri
Keyword(s):  
Risk Factors ◽  
Musculoskeletal Disorders ◽  
P Value ◽  
Kendall’S Tau ◽  
Cross Sectional ◽  
Kendall's Tau ◽  
Dental Assistant ◽  
Subjective Complaints ◽  
Dental Assistants ◽  
B Test

One of the hazards in dentistry is dental ergonomic. A working problem that can be caused by ergonomic hazards is Musculoskeletal Disorders (MSDs). The dental assistant is one of the jobs that have a risk for the occurrence of abnormalities in the musculoskeletal system. Based on the preliminary study on dental assistants that work in Pontianak City showed that 85% of people had musculoskeletal complaints on the legs, 71,4% had complaints on the calf, and 57,1% had complaints on the shoulder and upper back. The aim of this research is to find out the correlation between risk factors of dental ergonomics and subjective complaints of Musculoskeletal Disorders (MSDs) on dental assistants. The type of this research was a quantitative study with an analytical observational approach using a cross-sectional design. The research was conducted in Pontianak City in August 2021. The population of this research is 48 respondents and the samples were chosen using the total sampling technique. The instrument that used in this research were collected from the risk factors of dental ergonomics and Nordic Body Map (NMB) questionnaires which were later analyzed using Kendall's tau-b test. The result of this research is risk factors of dental ergonomics in the low category is 54,20%. The subjective complaints of Musculoskeletal Disorders (MSDs) in the low category is 68,80%. Based on Kendall's tau-b test showed that P. Value is 0,601 > 0,05 it means that there is no correlation between risk factors of dental ergonomics and subjective complaints of Musculoskeletal Disorders (MSDs). The conclusion of this research is there is no correlation between risk factors of dental ergonomics and subjective complaints of Musculoskeletal Disorders (MSDs) on dental assistants. For further research is expected to examine other risk factors that can cause subjective complaints of Musculoskeletal Disorders (MSDs). Salah satu unsur bahaya dalam dunia kedokteran gigi adalah dental ergonomi. Masalah kerja yang dapat ditimbulkan akibat bahaya ergonomi adalah Musculoskeletal Disorders (MSDs). Pekerjaan dental assistant merupakan salah satu pekerjaan yang memiliki risiko untuk terjadinya keluhan pada sistem musculoskeletal. Hasil studi pendahuluan pada dental assistant yang bekerja di wilayah Kota Pontianak menunjukkan bahwa 85% responden mengalami keluhan musculoskeletal pada bagian kaki, 71,4% pada bagian betis, dan 57,1% pada bagian bahu dan punggung atas. Tujuan penelitian ini adalah untuk mengetahui hubungan antara faktor risiko dental ergonomi dengan keluhan subjektif Musculoskeletal Disorders (MSDs) pada dental assistant. Jenis penelitian ini adalah penelitian  kuantitatif dengan pendekatan observasional analitik menggunakan rancangan cross-sectional. Penelitian ini dilakukan di Kota Pontianak pada bulan Agustus 2021. Populasi dalam penelitian ini adalah 48 responden dan pengambilan sampel menggunakan teknik total sampling. Instrumen dalam penelitian ini menggunakan kuesioner faktor risiko dental ergonomi dan kuesioner Nordic Body Map (NBM). Analisis data menggunakan uji Kendall’s Tau-B. Hasil dari penelitian ini adalah faktor risiko dental ergonomi berada pada kategori rendah (54,20%). Keluhan subjektif Musculoskeletal Disorders (MSDs) berada pada kategori rendah (68,80%). Hasil analisis data menunjukkan nilai P. Value sebesar 0,601 > 0,05 sehingga tidak terdapat hubungan antara faktor risiko dental ergonomi dengan keluhan subjektif Musculoskeletal Disorders (MSDs). Kesimpulan dari penelitian ini adalah tidak terdapat hubungan yang bermakna antara faktor risiko dental ergonomi dengan keluhan subjektif Musculoskeletal Disorders (MSDs) pada dental assistant. Penelitian selanjutnya diharapkan dapat mengkaji faktor-faktor risiko lain yang dapat menyebabkan keluhan subjektif Musculoskeletal Disorders (MSDs).  

scholarly journals Correlation between chronological age and skeletal age using CVMI and modified MP3 methods

2020 ◽  
Vol 16 (12) ◽  
pp. 1045-1050
Author(s):  
Ravindra Kumar Jain ◽  
Keyword(s):  
Skeletal Maturity ◽  
Cervical Vertebrae ◽  
Skeletal Age ◽  
Chronological Age ◽  
Accurate Estimation ◽  
P Value ◽  
Positive Correlation ◽  
Lateral Cephalograms ◽  
Rough Approximation ◽  
Method R

Chronological age conveys only a rough approximation of the maturational status of a person whereas skeletal maturity indicators give a more accurate estimation. Therefore, it is of interest to document the correlation between chronological and skeletal age using CVMI and modified MP3 methods. A total of 39 subjects between the age ranges of 9-16 years were selected for this study. Pre-treatment lateral cephalograms and hand-wrist radiographs of the subjects were used. The skeletal age was analyzed by the Cervical Vertebrae Maturity Index (CVMI) and modified MP3 methods. The data was analyzed with SPSS software version 23.00. Kendall’s Tau correlation test was performed to estimate the correlation between chronological age and skeletal age among the subjects and a linear regression test was also performed. Positive correlation was found between chronological age and skeletal age assessed by CVMI method (r= 0.398) and modified MP3 method (r=0.382) with p value <0.003. Thus it can be concluded that there was a positive correlation between chronological age and skeletal age among all the subjects.

Would midpalatal suture characteristics help to predict the success rate of miniscrew-assisted rapid palatal expansion?

2021 ◽  
Author(s):  
Adriana Souza de Jesus ◽  
Cibele Braga de Oliveira ◽  
Wilson Humio Murata ◽  
Selly Sayuri Suzuki ◽  
Ary dos Santos-Pinto
Keyword(s):  
Success Rate ◽  
Midpalatal Suture ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion

scholarly journals Workload for radiologists during on-call hours: dramatic increase in the past 15 years

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
R. J. M. Bruls ◽  
R. M. Kwee
Keyword(s):  
Western Europe ◽  
Kendall Test ◽  
Kendall’S Tau ◽  
Kendall's Tau ◽  
X Ray ◽  
The Past ◽  
Relative Value ◽  
Burn Out ◽  
Picture Archiving And Communication ◽  
Ct Studies

Abstract Background The objective of this study is to investigate the workload for radiologists during on-call hours and to quantify the 15-year trend in a large general hospital in Western Europe. Methods Data regarding the number of X-ray, ultrasound and computed tomography (CT) studies during on-call hours (weekdays between 6.00 p.m. and 7.00 a.m., weekends, and national holidays) between 2006 and 2020 were extracted from the picture archiving and communication system. All studies were converted into relative value units (RVUs) to estimate the on-call workload. The Mann–Kendall test was performed to assess the temporal trend. Results The total RVUs during on-call hours showed a significant increase between 2006 and 2020 (Kendall's tau-b = 0.657, p = 0.001). The overall workload in terms of RVUs during on-call hours has quadrupled. The number of X-ray studies significantly decreased (Kendall's tau-b = − 0.433, p = 0.026), whereas the number of CT studies significantly increased (Kendall's tau-b = 0.875, p < 0.001) between 2006 and 2020. CT studies which increased by more than 500% between 2006 and 2020 are CT for head trauma, brain CTA, brain CTV, chest CT (for suspected pulmonary embolism), spinal CT, neck CT, pelvic CT, and CT for suspected aortic dissection. The number of ultrasound studies did not change significantly (Kendall's tau-b = 0.202, p = 0.298). Conclusions The workload for radiologists during on-call hours increased dramatically in the past 15 years. The growing amount of CT studies is responsible for this increase. Radiologist and technician workforce should be matched to this ongoing increasing trend to avoid potential burn-out and to maintain quality and safety of radiological care.

scholarly journals A Comparison of Craniofacial Characteristics between Two Different Adult Populations with Class II Malocclusion—A Cross-Sectional Retrospective Study

Biology ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 438
Author(s):  
Arvind Sivakumar ◽  
Prasad Nalabothu ◽  
Huyen Nguyen Thanh ◽  
Gregory S. Antonarakis
Keyword(s):  
Growth Pattern ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
South Indian Population ◽  
The South ◽  
Facial Height ◽  
South Indian ◽  
Mandibular Plane ◽  
Lateral Cephalograms ◽  
Craniofacial Characteristics

The dental, skeletal, and soft-tissue characteristics of a particular malocclusion can differ based on ethnicity, race, age, sex and geographical location with Class II malocclusion being one of the most prevalent malocclusions encountered in orthodontic clinical practice. The broad understanding of the characteristics of vertical skeletal and dental parameters in patients with Class II malocclusion can help clinicians to identify patterns and variations in the expression of this phenotype for better treatment outcomes. Hence, we compared the craniofacial characteristics of skeletal and dental Class II malocclusion traits from Indian and Vietnamese individuals to analyze the vertical skeletal and dental patterns in both population groups. The sample comprised of lateral cephalograms from 100 young adults with Class II malocclusion, of which fifty (25 males and 25 females) were from South India and the other 50 age- and sex-matched adults from Vietnam. The lateral cephalometric radiographs were digitized into anonymous image files and were traced and assessed for 16 vertical skeletal and dental parameters. The ANB angle was greater in males (+1.4 deg; p < 0.001) and females (+1.9 deg; p < 0.001) in the South Indian population. The Vietnamese males had a larger mandibular plane angle, articular angle, anterior facial height and lower anterior facial height compared to the Indian males. The Vietnamese females had larger mandibular plane and articular angles compared to the Indian females. The skeletal class II malocclusion was more severe in the South Indian compared to the Vietnamese adults. The Vietnamese sample showed a generalized tendency towards a more vertical skeletal growth pattern and in males this pattern seemed to be due to the dentoalveolar component. The Vietnamese females showed a tendency towards a vertical growth pattern, but without apparent contribution by the dentoalveolar component.

Linear Mandibular Measurements: Comparison between Orthopantomograms and Lateral Cephalograms

2009 ◽  
Vol 46 (2) ◽  
pp. 147-153 ◽  
Author(s):  
E. M. Ongkosuwito ◽  
M. M. J. Dieleman ◽  
A. M. Kuijpers-Jagtman ◽  
P. G. H. Mulder ◽  
J. W. van Neck
Keyword(s):  
Interobserver Variability ◽  
Intraclass Correlation ◽  
Kappa Statistics ◽  
Magnification Factor ◽  
Linear Measurements ◽  
Lateral Cephalogram ◽  
X Ray ◽  
Lateral Cephalograms ◽  
Left And Right ◽  
Cephalometric Measurements

Objective: To investigate the reliability of length measurements of the mandible by comparing orthopantomograms (OPTs) with lateral cephalograms. Design: Observational study. Setting: OPTs and lateral cephalograms were taken of 20 human dry skulls. Four orthodontists and four maxillofacial surgeons located landmarks on all radiographs using a computer program for cephalometric measurements. Intraobserver and interobserver variability in locating landmarks was assessed, as well as positioning of the skulls prior to radiography between the x-ray assistants. Magnification differences between the left and right side of the mandible on the OPT were determined for five skulls. Kappa statistics were used to calculate the intraclass correlation coefficient for intraobserver and interobserver differences. An F test was used to assess differences between methods and between type of observer. Results: No significant differences were found in the magnification factor of the left and right side of the mandible. Compared with a lateral cephalogram, the OPT had comparable reliability in measuring mandibular distances condylion-gonion, gonion-menton, and condylion-menton. No significant differences were observed between the x-ray assistants in taking the OPTs and lateral cephalograms or in repositioning the skulls. Significant differences were found between orthodontists and maxillofacial surgeons for landmark measurements. Conclusion: An OPT is as reliable as a lateral cephalogram for linear measurements of the mandible (condylion-gonion, gonion-menton, and condylion-menton).

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