An Indigenously Designed Apparatus for Measuring Orthodontic Force

In orthodontics and dentofacial orthopaedics, a thorough knowledge of growth and development is essential in order to understand various factors that contribute as to how a particular type of growth takes place. When planning of orthodontic treatment for a malocclusion, one has to take into account the growth pattern, because it would considerably affect the success of the treatment. The purpose of this study was to compare antegonial notch depth, symphysis morphology, and ramus morphology in different growth patterns in skeletal class I and class II subjects. In this study, a total of 60 cephalograms were taken which comprised 30 cephalograms in skeletal class I and 30 cephalograms of skeletal class II patients. The groups were further divided into three groups, namely average, horizontal, and vertical growth patterns based on Jarabak’s ratio. Antegonial notch depth, symphysis width and symphysis angle, and ramus height were measured and compared between the growth patterns and between class I and class II skeletal patterns. An analysis of variance (ANOVA) test was performed to determine the comparison between groups for all these variables in both skeletal class I and class II. Independent 't' test was done to determine the comparison between skeletal class I and class II subjects for all variables. Mean and SD values for all variables were determined for all the groups. Depth of antegonial notch was found to be greater in vertical growth patterns compared to horizontal and average growth patterns. Large symphysis angle and symphysis width were noted in a horizontal growth pattern. Increased ramus height was noted in horizontal and average growth patterns. There was no significant difference between skeletal class I and class II malocclusion for all parameters.

Section: Resultsmentioning

confidence: 99%

Comparison between antegonial notch depth, symphysis morphology and ramus morphology among different growth patterns in skeletal class I and class II subjects

Abirami

Navaneethan

Varghese

2020

“…Among females, stage 4 of the Demirjian index has a signi icant association with stage 3 and 4 of the Modi ied MP3 index Figure 2. Previously our team had conducted numerous clinical trials (Felicita, 2017;Viswanath et al, 2015;Kamisetty et al, 2015), lab animal studies (Rubika et al, 2015;Kumar et al, 2011;Murugesan and Jain, 2020) and in-vitro studies (Felicita et al, 2012;Dinesh et al, 2013;Arvind and Jain, 2020) over the past ive years. Now we are focusing on epidemiological surveys.…”

Section: Resultsmentioning

confidence: 99%

Assessment of growth status by correlating he maturation stages of middle phalanx of the third finger and calcification stages of mandibular third molar in an institutional set up

Mohan¹,

Jain²,

Balakrishnan³

2020

The present study aims to assess the correlation between maturation stages of the middle phalanx of the third finger and calcification stages mandibular of the third molar in 9-16 years old children in the South Indian population. A total of 39 subjects between the age of 9-16 years were included for this study. Their pretreatment digital panoramic and hand-wrist radiographs were retrieved from the DIAS software provided by Saveetha Dental College and Hospital, Chennai, TamilNadu, India. These records were analyzed with the help of Demirjian index, used for mandibular third molar maturation stage, and Modified MP3 method, used for Middle phalanx maturation stage. Pearson's Chi-Square tests were done to analyze the association between Mp3 stages and mandibular third molar calcification stages. The statistical tests were performed in SPSS software. The results of this study showed that there is a statistically significant association between Demirjian index and modified MP3 stages in both females (p<0.002) and males (p<0.000). Within the limitations of this study, it was concluded that calcification stages of the lower third molar could be used as a supportive tool to assess maturation. As third molars are known to have many alterations, individual variation should be taken under consideration.

“…An attempt was made in this study to identify the prevalence of midline diastema (Kumar et al, 2011;Felicita, 2017b) and its etiological factors among the population (Vikram et al, 2017;Kamisetty, 2015;Viswanath et al, 2015). Further studies with a larger population is advised (Felicita, 2018;Felicita et al, 2012;Dinesh, 2013).…”

Section: Association Between Etiology and Gendermentioning

confidence: 99%

Prevalence of midline diastema and its correlation with high Frenal attachment

Shivanni

Balakrishna

2020

The aim of this study is to assess the prevalence of midline diastema in the South Indian population and to find its correlation with high frenal attachment. The study includes patients visiting the department of orthodontics. The data was collected from the digital archives of the institution. Intraoral photos were assessed. A total 305 patients who reported to the department of orthodontics from June 2019 to March 2020 were screened. The causes of diastema namely presence of high frenal attachment, generalised spacing and periodontal disease, were evaluated. The results were statistically analysed using chi-square tests and graphs were tabulated. A total of 305 patients were screened, among which midline diastema was present in 22.3% (68) of the cases. High frenal attachment was found in 52%, generalised spacing in 36% and periodontal disease in 12% of the cases. The mean age of the patient was 23±5.25 years. The incidence of midline diastema was found to be 22%. High frenal attachment was found to be the most common etiology.