scholarly journals MEDIAN LINE IMMETRITY AT CENTRIC OCCLUSSION IN FKG UNMAS DENPASAR

2021 ◽  
Vol 17 (1) ◽  
pp. 15-21
Author(s):  
Norman Hidajah ◽  
Keyword(s):  
Facial Structure ◽  
Median Line ◽  
Cross Sectional ◽  
Centric Occlusion

Introduction: Facial appearances especially teeth and face are some of the most important things in this era. The symmetry of the dental median line with the facial median line needs to be considered to create a balanced, harmonious, and attractive facial structure, especially when smiling. The position of the maxillary median line to the facial median line is an important factor in orthodontic diagnosis. This research aims to obtain the symmetry of the dental median line with the facial median line during centric occlusion in dentistry students of the Mahasaraswati University of Denpasar. Materials and Methods: The type of this research is descriptive with a cross-sectional approach that involved 57 participants. Results and Discussions: The results of this research are the percentage of the students whose dental median line with a facial median line is symmetrical (≤ 1 mm) was 77% that obtained 44 participants, while the percentage of students who had a dental median line with a facial median line is not symmetrical (> 1 mm) were 23 % that obtained 13 participants with a shift of median line 2 mm in 7 participants, 3 mm in 5 participants, and 5 mm in 1 participant. Conclusion: Based on the results it can be concluded that the dentistry students of the Mahasaraswati University of Denpasar whose dental median line with their facial median line were symmetrical is more dominant.

scholarly journals Pattern of occlusal contacts in intercuspal position of natural teeth

2016 ◽  
Vol 4 (1) ◽  
pp. 19
Author(s):  
Tanzeela Imran ◽  
Naseer Ahmed ◽  
Bushra Nazeer
Keyword(s):  
Sample Size ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Posterior Teeth ◽  
Contact Areas ◽  
Natural Teeth ◽  
Centric Occlusion

The purpose of this study was to determine the patterns of occlusal contacts and location in intercuspal position of natural teeth.A cross-sectional study was conducted with a sample size of around seventy patients within a span of seven months, complete mouth impressions were made of each patient with hydrocolloid material and the impressions were poured in dental stone. The contact areas of the teeth in the maximum intercuspation position were determined by wax. Three distinct types of indentations were noted on the wax interocclusal record. Then similarly the centric occlusion contacts of the teeth on the cast were determined by interposing a new piece of wax, approximating the casts in the maximum intercuspation position by hand, and applying pressure. The oral and cast wax recordings were then compared. The occlusal relation for each individual tooth was then classified and recorded in a Performa.Following wax interocclusal record of natural teeth in intercuspation an ideal occlusion was absent, a difference in morphology of anterior and posterior teeth was also evident that inevitably affects the nature of occlusal contacts.The ideal occlusion was not found in any of the patient’s investigation.

scholarly journals Cephalometric Norms in an Omani Adult Population of Arab Descent

2018 ◽  
Vol 18 (2) ◽  
pp. 182 ◽  
Author(s):  
Prashantha S. Govinakovi ◽  
Ibrahim Al-Busaidi ◽  
Viswapurna Senguttuvan
Keyword(s):  
Ethnic Groups ◽  
Orthodontic Treatment ◽  
Adult Population ◽  
Population Characteristics ◽  
Cross Sectional ◽  
Nasolabial Angle ◽  
Arab Descent ◽  
The Military ◽  
Cephalometric Measurements ◽  
Centric Occlusion

Objectives: This study aimed to establish cephalometric norms for an Omani population of Arab descent and to compare these with established cephalometric values for Caucasians. Methods: This cross-sectional studywas conducted at the Military Dental Centre and Oman Dental College in Muscat, Oman, between May 2014 and October 2016. A total of 150 Omani patients between 20–29 years old seeking orthodontic treatment were included. All participants had a symmetrical face, class I molar and canine relationships, proper intercuspation, a normal overjet/overbite (<3 mm) and mild spacing/crowding of the teeth (≤3 mm). Lateral cephalography was performed in centric occlusion with the lips relaxed and the head in a natural position. Cephalometric measurements were then compared with Eastman Standard norms. Results: The Omani subjects were found to have a slightly retrusive maxilla, an increased angle between the maxillary and mandibular planes and shorter facial heights in comparison to the Eastman Standard norms. Furthermore, incisor relations were edge-to-edge in nature and the interincisal angle was reduced, suggesting that the Omani subjects had more proclined incisors. In addition, the lips were more protrusive and the nasolabial angle was more obtuse. Conclusion: In the Omani sample, increased proclination of the incisors was observed in comparison to Eastman Standard norms. As such, slightly more proclined incisors should be considered acceptable and natural among Omani patients of Arab descent. The cephalometric findings of this study may be helpful in the diagnosis and treatment planning of orthodontic problems among Omanis of Arab descent.Keywords: Cephalometry, standards; Population Characteristics; Ethnic Groups; Arabs; Orthodontics; Oman.

Primary Canine and Molar Relationships in Centric Occlusion in Three to Six Year-Old Turkish Children: A Cross-Sectional Study

2006 ◽  
Vol 7 (3) ◽  
pp. 59-66 ◽  
Author(s):  
Yucel Yilmaz ◽  
Taşkin Gürbüz ◽  
Sera Şimşek ◽  
Anya Dalmiş
Keyword(s):  
Class Ii ◽  
Cross Sectional Study ◽  
Class I ◽  
Class Iii ◽  
Sectional Study ◽  
Cross Sectional ◽  
Turkish Children ◽  
Significant Difference ◽  
Centric Occlusion ◽  
Primary Canine

Abstract This cross-sectional study aimed to evaluate the primary canine and the primary molar relationship in 205 (90 girls and 115 boys) three to six year-old Turkish children with the primary dentition in centric occlusion according to gender and age. In terms of the molar relationship, Class I was represented by 88.29% of all children who agreed to participate in the study, followed by Class II (7.31%), and Class III (4.4%). In terms of the canine relationship, Class I was represented by 87.8% of the sample, followed by Class II (7.8%), and Class III (4.4%). A statistically significant difference was found between age and both the canine and molar relationships (p<0.005), and a positive correlation was confirmed among them. However, the difference and correlation between the gender and the canine and molar relationships were not significant. Citation Yilmaz Y, Gürbüz T, Şimşek S, Dalmiş A. Primary Canine and Molar Relationships in Centric Occlusion in Three to Six Year-Old Turkish Children: A Cross-Sectional Study. J Contemp Dent Pract 2006 July;(7)3:059-066.

scholarly journals Is there is any relationship between malocclusion and nutritional pattern of children

2015 ◽  
Vol 4 (2) ◽  
pp. 9-13
Author(s):  
Saeed Hossain Khan ◽  
Md Nazmul Hasan ◽  
Sakiba Anjum ◽  
Tanzila Rafique
Keyword(s):  
Observational Study ◽  
School Children ◽  
Facial Structure ◽  
Cross Sectional ◽  
The Relationship ◽  
Who Guideline

Objective: Malnutrition of children results the underdevelopment of skeleton and facial structure, which might causes the malocclusion in developing dentitions. The study was aimed to investigate the relationship between the malocclusion and malnutrition.Method: Cross-sectional observational study was done with structured questioner from 627 school children (276 male, 349 female) of 7 to 15years age. Variable were set according to WHO guideline of malocclusion and malnutrition.Result: Among the study populations subject with malnutrition, having persistent digit sucking habit of more than 6years of age has been associated with malocclusion (OR = 3.1; 95%CI).Conclusion: No association was reported between malnutrition and malocclusion.Update Dent. Coll. j: 2014; 4 (2): 09-13

scholarly journals Primary second molar relations in preschool-aged children

2018 ◽  
Vol 30 (1) ◽  
pp. 59
Author(s):  
Rafinus Arifin ◽  
Taufiqi Hidayatullah ◽  
Sholeha Rahayu
Keyword(s):  
Cross Sectional Study ◽  
Primary Molars ◽  
Second Primary ◽  
Cross Sectional ◽  
Second Molar ◽  
Study Approach ◽  
Distal Surface ◽  
Banda Aceh ◽  
Centric Occlusion ◽  
Preschool Aged Children

Introduction: The primary second molar relation is also called the terminal plane, which is the relation between the distal surface of the maxillary and mandibular second primary molars in a centric occlusion position. One of the most important characteristics of the ideal occlusion development on the primary dentition is if the primary second molar relation classified as the flush terminal plane. This relation plays a significant role in determining the relation in permanent molar because the eruption of the first permanent molars are guided by the distal surface of the maxillary and mandibular second primary molars. The purpose of this study was to found out the clinical description of the primary second molar relation among the preschool-aged children in four kindergartens in Banda Aceh. Methods: This study was a descriptive study with cross-sectional study approach. The subject selection method was performed with a purposive sampling method involving as much as 37 subjects, which were students of State Kindergarten of Pembina 1, State Kindergarten 2, State Kindergarten 3, and State Kindergarten of Adidarma 4, Banda Aceh. The examination was performed by using the intraoral mirror when the teeth were in the centric occlusion position. Decisions regarding the primary second molar relation were made by the bilateral occlusion (left and right). Results: The flush terminal plane was found in 45.9% of all respondents, the mesial step was 54.1%, and the distal step was 0.0%. Conclusion: The primary second molar relation among preschool-aged children generally had the mesial step.

Automated Image Analysis Of Nuclear And Cytoplasmic Changes In Exfoliated Cells From Tracheas Treated With Carcinogen

1977 ◽  
Vol 35 ◽  
pp. 220-221
Author(s):  
S.F. Stinson ◽  
J.C. Lilga ◽  
M.B. Sporn
Keyword(s):  
Image Analysis ◽  
Pattern Analysis ◽  
Relative Proportion ◽  
Automated Image Analysis ◽  
Image Analyzer ◽  
Cross Sectional ◽  
Exfoliated Cells ◽  
Neoplastic Lesions ◽  
Analysis System ◽  
Morphologic Criterion

Increased nuclear size, resulting in an increase in the relative proportion of nuclear to cytoplasmic sizes, is an important morphologic criterion for the evaluation of neoplastic and pre-neoplastic cells. This paper describes investigations into the suitability of automated image analysis for quantitating changes in nuclear and cytoplasmic cross-sectional areas in exfoliated cells from tracheas treated with carcinogen.Neoplastic and pre-neoplastic lesions were induced in the tracheas of Syrian hamsters with the carcinogen N-methyl-N-nitrosourea. Cytology samples were collected intra-tracheally with a specially designed catheter (1) and stained by a modified Papanicolaou technique. Three cytology specimens were selected from animals with normal tracheas, 3 from animals with dysplastic changes, and 3 from animals with epidermoid carcinoma. One hundred randomly selected cells on each slide were analyzed with a Bausch and Lomb Pattern Analysis System automated image analyzer.

X-Ray Replication of Submicrometer Linewidth Patterns

1977 ◽  
Vol 35 ◽  
pp. 136-137
Author(s):  
Henry I. Smith ◽  
D.C. Flanders
Keyword(s):  
Electron Beam Lithography ◽  
Cross Sectional ◽  
X Ray ◽  
Electron Backscattering ◽  
Spatial Frequencies ◽  
Cross Sectional Profile ◽  
Carbon Foils ◽  
Sectional Profile ◽  
And Control ◽  
Soft Radiation

Scanning electron beam lithography has been used for a number of years to write submicrometer linewidth patterns in radiation sensitive films (resist films) on substrates. On semi-infinite substrates, electron backscattering severely limits the exposure latitude and control of cross-sectional profile for patterns having fundamental spatial frequencies below about 4000 Å(l),Recently, STEM'S have been used to write patterns with linewidths below 100 Å. To avoid the detrimental effects of electron backscattering however, the substrates had to be carbon foils about 100 Å thick (2,3). X-ray lithography using the very soft radiation in the range 10 - 50 Å avoids the problem of backscattering and thus permits one to replicate on semi-infinite substrates patterns with linewidths of the order of 1000 Å and less, and in addition provides means for controlling cross-sectional profiles. X-radiation in the range 4-10 Å on the other hand is appropriate for replicating patterns in the linewidth range above about 3000 Å, and thus is most appropriate for microelectronic applications (4 - 6).

A Field Emission System For Transmission Electron Microscopy

1973 ◽  
Vol 31 ◽  
pp. 298-299
Author(s):  
Michel Troyonal ◽  
Huei Pei Kuoal ◽  
Benjamin M. Siegelal
Keyword(s):  
Electron Microscope ◽  
Field Emission ◽  
Optical System ◽  
High Vacuum ◽  
Ultra High Vacuum ◽  
Objective Lens ◽  
Electron Optical System ◽  
Cross Sectional ◽  
Transmission Electron ◽  
Emission System

A field emission system for our experimental ultra high vacuum electron microscope has been designed, constructed and tested. The electron optical system is based on the prototype whose performance has already been reported. A cross-sectional schematic illustrating the field emission source, preaccelerator lens and accelerator is given in Fig. 1. This field emission system is designed to be used with an electron microscope operated at 100-150kV in the conventional transmission mode. The electron optical system used to control the imaging of the field emission beam on the specimen consists of a weak condenser lens and the pre-field of a strong objective lens. The pre-accelerator lens is an einzel lens and is operated together with the accelerator in the constant angular magnification mode (CAM).

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