scholarly journals Evaluating Soft Tissue Thickness in Different Anterior-Posterior Skeletal Classifications Informative

2021 ◽  
Vol 15 (5) ◽  
pp. 1629-1634
Author(s):  
Saba Safarzadeh ◽  
Mohammad Monirifard ◽  
Farinaz Shirban
Keyword(s):  
Soft Tissue ◽  
Pearson Correlation ◽  
Class Ii ◽  
Class I ◽  
Class Iii ◽  
Tissue Thickness ◽  
Cross Sectional ◽  
Soft Tissue Thickness ◽  
Significant Difference ◽  
Anterior Posterior

Background: The soft tissue thickness is affected by anterior posterior skeletal relationship. This study has been designed to evaluate the soft tissue thickness among different anterior posterior skeletal classifications. Material and Methods: In this cross-sectional study, 206 digital lateral cephalometric radiographs from patients undergoing treatment at several orthodontic clinics were evaluated. The skeletal group was determined by the ANB angle. The planned points were determined on digital radiographs using the Digimizer.V4.1.1.0 and then the measurements were done. Data were analyzed by Kruskal-Wallis, Mann-Whitney, Pearson Correlation and Spearman tests. Results: Significant difference showed between soft tissue thickness at Subnasale between class I and II, at Subnasale, Labrale Superius, Stomion Superius, Stomion Inferius between class I and III and at Subnasale, Labrale Superius, Stomion Superius, Stomion Inferius, between class II and III. Among the women, soft tissue thickness at subnasale were higher in class I group compared to class II, Subnasale, Labrale Superius, Stomion Superius, Stomion Inferius were higher in class III compared to class I and at Labrale Inferius was higher in class II compared to class III. Among the men, soft tissue thickness at Stomion Superius, Stomion Inferius and Labrale Superius were higher in class III group compared to class I and II. Conclusion: We established that soft tissue thickness in some landmarks were significantly different between skeletal groups and gender. There is a correlation in soft tissue thickness and skeletal relationship at Stomion Inferius, Subnasale, Labrale Superius, Stomion Superius. Keywords: Soft Tissue, Skeletal Classification, Cephalometry

scholarly journals Soft tissue thickness of face profile conditioning by dento-skeletal anomalies

2011 ◽  
Vol 139 (7-8) ◽  
pp. 439-445
Author(s):  
Tatjana Tanic ◽  
Zorica Blazej ◽  
Vladimir Mitic
Keyword(s):  
Soft Tissue ◽  
Class Ii ◽  
Class Iii ◽  
Upper Lip ◽  
Tissue Thickness ◽  
Facial Soft Tissue ◽  
Lower Lip ◽  
Skeletal Anomalies ◽  
Soft Tissue Thickness ◽  
Soft Tissue Profile

Introduction. Orthodontic treatment of dento-skeletal anomalies is generally based on the correction of teeth and jaws relationship, while it is expected that soft facial tissue spontaneously adapts to therapeutically achieved relationship and to accompany hard tissue changes. Objective. To establish facial soft tissue thickness conditioning by the presence of dento-skeletal anomalies. Methods. The study was performed at the Dental Clinic of Nis, and involved the analysis of cephalometric rendgenograms in 121 patients, aged 12-18 years, with no previous orthodontical treatment. According to dento-skeletal relationship between teeth and jaws the patients were divided into four groups; class I (control group), class II of division 1, class II of division 2 and class III. The standard analysis of dento-skeletal profile was done according to Steiner and soft tissue profile according to Burstone was done in all. Results. The patients of class II/1 had a significantly thinner upper lip (t=2.650; p<0.05) and thinner upper lip sulcus (t=1.999; p<0.05). The patients of class II/2 had a significantly thicker upper lip (t=2.912; p<0.01), while those of class III had a significantly thinner lower lip (t=3.900; p<0.001). Conclusion. The thickness of facial soft tissue considerably influences facial profile appearance in persons with a dento-skeletal anomaly. Not only do soft tissues adapt to the existing jaws relationship, but can also camouflage present anomalies.

PSI-4 Quantification of Cooling Effects on Basic Tissue Measurements and Exposed Cross-sectional Brain Area in Cadaver Heads from Market Pigs

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 226-227
Author(s):  
Katherine Bishop ◽  
Karly N Anderson ◽  
Sarah Albers ◽  
Kaysie Allen ◽  
Christina Huber ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Data Collection ◽  
Coefficient Of Variation ◽  
Brain Area ◽  
Tissue Thickness ◽  
Cross Sectional ◽  
Soft Tissue Thickness ◽  
Significant Difference ◽  
Cooling Effects ◽  
The Impact

Abstract The objective of this project was to determine the impact of cooling on the soft tissue thickness, cranial thickness, and cross-sectional brain area of cadaver heads from market pigs. Documenting the effect of cooling on tissue dimensions of swine heads is valuable and important for future investigations of physical stunning and euthanasia methods that use cadaver heads. Cadaver heads were sourced from market pigs stunned with CO2. After transport to the data collection location, a captive bolt shot was applied in the frontal position. Following captive bolt application, each head (n=36) underwent an UNCHILLED and CHILLED treatment. The UNCHILLED treatment involved images collected immediately after splitting the head along the bolt path and the CHILLED treatment involved images of the same heads after storage in a walk-in cooler for 24 h at 2–4°C. All measurements for each treatment were determined from images of the heads cut along the plane of the bolt path immediately prior to and immediately after the refrigeration treatment. Measurements were performed by two observers; across all measurements, mean interobserver percent coefficient of variation (%CV) was 11.3±0.6%. The soft tissue posterior to the bolt path was different (P=0.0120) between treatments (CHILLED: 6.4±0.2mm; UNCHILLED: 7.2±0.2mm). The soft tissue thickness anterior to the bolt path was different (P=0.0378) between treatments (CHILLED: 5.5±0.2mm; UNCHILLED: 6.1±0.2mm). There was not a significant difference (P=0.8659) in cranial thickness posterior to the bolt path (CHILLED: 18.1±0.6mm; UNCHILLED: 18.3±0.6mm), nor was there a significant difference (P=0.2593) in cranial thickness anterior to the bolt path between treatments (CHILLED: 16.2±0.6mm; UNCHILLED: 15.2±0.6mm). Cross-sectional brain area did not differ (P=0.0737) (CHILLED: 3633.4±44.1mm; UNCHILLED: 3519.9±44.1mm). A correction factor of 1.12 was determined from this study for cases where estimation of UNCHILLED soft tissue thickness from CHILLED soft tissue thickness is necessary.

scholarly journals Modifications of Midfacial Soft-Tissue Thickness Among Different Skeletal Classes in Italian Children

2018 ◽  
Vol 10 (1) ◽  
pp. 1-8
Author(s):  
Daniele Gibelli ◽  
Matteo Zago ◽  
Annalisa Cappella ◽  
Claudia Dolci ◽  
Chiarella Sforza
Keyword(s):  
Soft Tissue ◽  
Soft Tissues ◽  
Class Ii ◽  
Class Iii ◽  
Tissue Thickness ◽  
Facial Soft Tissue ◽  
Skeletal Class ◽  
Soft Tissue Thickness ◽  
Italian Children ◽  
The Relationship

Background: The anatomical assessment of the arrangement of facial soft tissues has important applications in different fields from orthodontics to plastic surgery. One of the issues concerns the relationship between facial soft tissue thickness and skeletal class. Literature mainly deals with adult populations, whereas very few studies have been focused on children. Objective: This study aims at investigating the relationship between midline facial soft tissue thickness and skeletal classes in Italian pre-treatment orthodontic child patients. Methods: Lateral cephalometric X-ray films were obtained from 220 healthy Caucasoid children (91 males and 129 females), aged between 6 and 18 years (Class I: 41 males and 70 females; Class II: 18 males and 25 females; Class III: 32 males and 34 females). All the films were digitized and 14 soft tissue thicknesses were measured on the midface; in addition, the skeletal class was assessed according to the corrected ANB angle (ANBc). Differences in facial soft tissue thickness according to sex and skeletal class were assessed through two-way ANOVA test (p<0.01). Results: Statistically significant differences according to sex were found for labrale superius, stomion and labrale inferius, with thicker soft tissues in males than in females (p<0.01). Only measurements at labrale superius and gnathion showed statistically significant differences according to skeletal class, with thicker soft tissues in Class III children and thinner ones in Class II children (p<0.01). Conclusion: The limited number of investigations, as well as the differences in protocols, renders the comparison of results from different studies difficult, suggesting further investigations to enlighten this complex and debated anatomical issue.

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 Prevalence of Class I, II and III skeletal relationships and its association with dental anomalies in an ethnic Chinese orthodontic population

2021 ◽  
pp. 201010582110007
Author(s):  
Grace Xiu Ling Chan ◽  
Elaine Li Yen Tan ◽  
Ming Tak Chew ◽  
Hung Chew Wong ◽  
Kelvin Weng Chiong Foong ◽  
...  
Keyword(s):  
Class Ii ◽  
Class I ◽  
Class Iii ◽  
Dental Anomalies ◽  
Lateral Cephalogram ◽  
Cross Sectional ◽  
Impacted Teeth ◽  
Ethnic Chinese ◽  
Significant Difference ◽  
Clinical Records

Objectives: To investigate the prevalence of skeletal Classes I, II and III in a Chinese orthodontic population, and determine its association with the prevalence of dental anomalies. Methods: This retrospective cross-sectional study was conducted on 2508 ethnic Chinese orthodontic patients aged 14 to 25 years who attended the Department of Orthodontics at the National Dental Centre Singapore. Radiographs, photographs and clinical records of the study sample were examined for the prevalence of dental anomalies in the permanent dentition, excluding third molars. The anteroposterior skeletal relationship was determined based on the A point–Nasion–B point angle measured from the lateral cephalogram, whereby Class I: A point–Nasion–B point = 3.6° ± 2.5° (1 standard deviation) that is 1.1° to 6.1°; Class II: A point–Nasion–B point greater than 6.1°; Class III: A point–Nasion–B point less than 1.1°. Logistic regression was used to determine the association between the anteroposterior skeletal relationship and the occurrence of various dental anomalies. Results: The prevalence of the anteroposterior skeletal relationship was: 49.5% Class I; 23.1% Class II; and 27.4% Class III. Class III patients had significantly lower odds of impacted teeth compared to Class I patients (odds ratio 0.608, 95% confidence interval 0.463–0.798; P=0.00009). There was no significant difference in the occurrence of the anomalies among the various anteroposterior skeletal types. Conclusions: The occurrence of impacted teeth was lower in Class III than Class I, while no significant differences were noted for hyperdontia, hypodontia, peg-shaped upper lateral incisors, transposition and double teeth. The occurrence of all investigated dental anomalies had no significant difference between Class II and Class I.

scholarly journals Quantification of cooling effects on basic tissue measurements and exposed cross-sectional brain area of cadaver heads from market pigs

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Karly N Anderson ◽  
Sarah E Albers ◽  
Kaysie J Allen ◽  
Katherine D Bishop ◽  
Brian J Greco ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Data Collection ◽  
Brain Area ◽  
Tissue Thickness ◽  
Cross Sectional ◽  
Co2 Gas ◽  
Soft Tissue Thickness ◽  
Significant Difference ◽  
Cooling Effects ◽  
The Impact

Abstract The objective of this project was to determine the impact of cooling on the soft tissue thickness, cranial thickness, and cross-sectional brain area of cadaver heads from market pigs. Documenting the effect of cooling on tissue dimensions of swine heads is valuable and important for future investigations of physical stunning and euthanasia methods that use cadaver heads. Scalded and dehaired cadaver heads with intact jowls were sourced from market pigs stunned with CO2 gas. After transport to the data collection location, a penetrating captive bolt (PCB) shot (Jarvis Model PAS—Type P 0.25R Caliber Captive Bolt Pistol with Medium Rod Assembly and Blue Powder Cartridges) was applied in the frontal position. Following PCB application, each head (n = 36) underwent an UNCHILLED treatment followed by CHILLED treatment. The UNCHILLED treatment involved images collected immediately after splitting each head along the bolt path, and the CHILLED treatment involved images of the same heads after storage in a walk-in cooler for 24 h at 2 to 4°C. All measurements for each treatment were collected from images of the heads on the plane of the bolt path immediately prior to and immediately after the refrigeration treatment. Measurements were performed by two observers. Across all measurements, mean interobserver coefficient of variation was 11.3 ± 0.6%. The soft tissue caudal to the bolt path was different (P = 0.0120) between treatments (CHILLED: 6.4 ± 0.2 mm; UNCHILLED: 7.2 ± 0.2 mm). The soft tissue thickness rostral to the bolt path was different (P = 0.0378) between treatments (CHILLED: 5.5 ± 0.2 mm; UNCHILLED: 6.1 ± 0.2 mm). Cranial thickness caudal to the bolt path was not different (P = 0.8659; CHILLED: 18.1 ± 0.6 mm; UNCHILLED: 18.3 ± 0.6 mm), nor was there a significant difference (P = 0.2593) in cranial thickness rostral to the bolt path between treatments (CHILLED: 16.2 ± 0.6 mm; UNCHILLED: 15.2 ± 0.6 mm). Cross-sectional brain area did not differ (P = 0.0737; CHILLED: 3633.4 ± 44.1 mm; UNCHILLED: 3519.9 ± 44.1 mm). A correction factor of 1.12 was determined from this study for cases where estimation of UNCHILLED soft tissue thickness from CHILLED soft tissue thickness is necessary.

Prevalence of Malocclusions in Autistic Patients in Isfahan

2021 ◽  
Author(s):  
Zahra Ali Mehtari ◽  
Mehdi Rafiei ◽  
Saeed Azarbayjani ◽  
Neda Ahmadi Rouzbehani ◽  
Amir Hossain Moeini
Keyword(s):  
Class Ii ◽  
Autism Spectrum ◽  
Open Bite ◽  
Class I ◽  
Dental Student ◽  
Class Iii ◽  
Cross Sectional ◽  
Deep Bite ◽  
Normal Occlusion ◽  
Age Range

Introduction: Autism spectrum disorder (ASD) is a group of neurodevelopmental disorders diagnosed by impairments in social interaction and communication with repetitive and restrictive stereotyped behavioral patterns. The Prevalence of autism has been reported to be increased in recent years. This study aimed to assess the prevalence of different types of malocclusion among ASD patients in Isfahan in 2018. Materials & Methods: In a descriptive and cross-sectional trial, 92 ASD patients were studied in the age range of 7-18 years at the center for autism patients in Isfahan. Clinical oral examinations of patients are taken to assess the involved malocclusions (Cl I, Cl II and Cl III malocclusions) and malocclusion traits (deep bite, open bite and cross bite) by an educated dental student under the supervision of an orthodontist under natural light. The data are reported using frequency and percentage indices. Results: Class I malocclusion had the highest prevalence 54.3% (50) among ASD patients and the prevalence of class II and class III were found to be 19.6% (18) and 7.6% (7) respectively. The frequency of malocclusions traits of deep bite, cross bite and the open bite were 27.2% (25), 18.5% (17) and 7.6% (7) respectively. Among of the total patients, 65.2% (60) showed normal bite and 18/5% (17) showed Normal occlusion. Conclusion: ASD patients showed class I, class II and class III malocclusions from the most to least frequency and the most frequent malocclusion traits were also deep bite, cross bite and open bite respectively.

Prevalence of Malocclusion among School Children of Biratnagar, Nepal

2021 ◽  
Vol 11 (1) ◽  
pp. 46-48
Author(s):  
Nidhi Giri ◽  
Anand Acharya ◽  
Kanika Yadav
Keyword(s):  
School Children ◽  
Class Ii ◽  
Cross Sectional Study ◽  
Class I ◽  
Class Iii ◽  
Cross Sectional ◽  
Total Study Population ◽  
Medical College ◽  
Normal Occlusion ◽  
Study Population

Introduction: Various forms of malocclusion are a matter of serious concern in Nepalese population. This study was carried out to understand the prevalence of malocclusion among the school children of Biratnagar. The objective of this research is to find out the prevalence of malocclusion of children from different schools of Biratnagar visiting the Pedodontics and Orthodontics department of Nobel Medical College and Teaching Hospital, Biratnagar. Materials and Method: A descriptive cross sectional study method was used in this research. Data was collected by using direct observation of the subjects and occlusal assessment was done according to Angle’s classification and Dewey’s modification types of class I, class II and class III malocclusion. Result: Subjects with normal occlusion was found to be 39 % and with malocclusion was found to be 61%. Among them, class I malocclusion (60%) and angles class II div I subjects (88.33%) were in majority of the total study population. Conclusion: The present study helps to determine the prevalence of malocclusion and need of orthodontic treatment for the school children of Biratnagar

scholarly journals Relationship of captive bolt stunning location with basic tissue measurements and exposed cross-sectional brain area in cadaver heads from market pigs1

2019 ◽  
Vol 3 (4) ◽  
pp. 1405-1409
Author(s):  
Karly Anderson ◽  
Elizabeth Ries ◽  
Jacob Backes ◽  
Katherine Bishop ◽  
Miranda Boll ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Brain Area ◽  
Sectional Area ◽  
Tissue Thickness ◽  
Cross Sectional ◽  
Soft Tissue Thickness ◽  
Alternative Location ◽  
The Common ◽  
Relationship Of ◽  
Total Tissue

Abstract The objective of this study was to contrast the soft tissue thickness, cranial thickness, total tissue thickness, cross-sectional brain area, and bolt–brain contact from the common frontal application of captive bolt euthanasia with the alternative location behind the ear in cadaver swine heads. Twenty-three cadaver heads from pigs that were approximately 136 kg and 6 mo of age were collected from a regional slaughter establishment following CO2 stunning and assigned to either the FRONTAL (n = 11) or the CAUDAL TO PINNA (n = 12) application of the captive bolt. The soft tissue thickness was different (P &lt; 0.0001) between the 2 applications (FRONTAL: 8.3 ± 3.4 mm; CAUDAL TO PINNA: 56.5 ± 3.4 mm). The cranial thickness was different (P &lt; 0.0001) between the applications (FRONTAL: 23.4 ± 2.9 mm; CAUDAL TO PINNA: 26.5 ± 2.9 mm). There was also a difference (P &lt; 0.0001) in the total tissue thickness between the 2 applications (FRONTAL: 31.7 ± 3.8 mm; CAUDAL TO PINNA: 73.4 ± 3.8 mm). Cross-sectional area was calculated from images collected immediately after the heads were cut along the plane of bolt travel by bandsaw and was different (P = 0.0028) between the 2 applications (FRONTAL: 25.2 ± 1.3 cm2; CAUDAL TO PINNA: 18.9 ± 1.3 cm2). Bolt–brain contact was also assessed from the images, and a difference (P = 0.0360) between the 2 applications (FRONTAL: 100 ± 10.5%; CAUDAL TO PINNA: 66.7 ± 10.5%) was identified. The results of this study suggest that the FRONTAL application may provide a bolt path with less tissue to travel through when compared with the CAUDAL TO PINNA application for pigs of the approximate age and weight of those in this study. Ultimately, the FRONTAL location may present less risk for the captive bolt euthanasia of swine at market weight at this time. Additional refinement of the CAUDAL TO PINNA procedure and modification to the captive bolt device to penetrate to a suitable depth to ensure brain damage is recommended.

scholarly journals Mandibular symphysis morphology and dimensions in different anteroposterior jaw relationships

2013 ◽  
Vol 84 (2) ◽  
pp. 304-309 ◽  
Author(s):  
Susan N. Al-Khateeb ◽  
Emad F. Al Maaitah ◽  
Elham S. Abu Alhaija ◽  
Serene A. Badran
Keyword(s):  
Correlation Coefficient ◽  
Alveolar Bone ◽  
Pearson Correlation ◽  
Class Ii ◽  
Class I ◽  
Pearson Correlation Coefficient ◽  
Strongly Correlated ◽  
Class Iii ◽  
Mandibular Symphysis ◽  
Lateral Cephalograms

ABSTRACT Objective: To assess the morphology and dimensions of mandibular symphysis (MS) in different anteroposterior jaw relationships and to investigate whether craniofacial parameters have any correlation with its shape and/or dimensions. Materials and Methods: Lateral cephalograms of subjects with Class I, Class II, and Class III skeletal relationships were traced. Several craniofacial and MS parameters were measured. MS parameters were compared between the three groups using analysis of variance and were correlated with the craniofacial parameters using the Pearson correlation coefficient. Results: Larger angle of concavity of the chin, more inclination of the alveolar bone toward the mandibular plane, and larger MS dimensions and area (P &lt; .001) were found with a Class III skeletal relationship compared to Class I and Class II relationships. The Pearson correlation coefficient between Id-Me and AFH was r  =  0.83 and between Id-Me and LAFH it was r  =  0.81. Conclusions: The dimensions and configuration of MS in the Class III relationship were different than those in Class I and Class II relationships; the alveolar part of MS compensated for the skeletal relationship in the Class III pattern. MS dimensions were strongly correlated to anterior facial dimensions.

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