Prevalence of malocclusion and orthodontic treatment need in schoolchildren - An epidemiological study

What impact do personality traits have on self-perception of dental aesthetics?

BACKGROUND

Malocclusion has significant social, psychological and physical impacts on the quality of life. This study aimed to study psychosocial impact of dental aesthetics among students, and how it was modified by personality traits.

METHODS

Chinese version of Eysenck Personality Questionnaire Short Scale of (EPQ-RSC) and Chinese version of Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ) were used to investigate 555 undergraduate students, aged 18 to 24 years. The participants and investigators self-rated their own dental aesthetics using the Aesthetic Component (AC) of the Index of Orthodontic Treatment Need (IOTN). The malocclusion was assessed by two independent investigators using the Dental Health Component (DHC) of IOTN.

RESULTS

No statistically significant difference was found for gender (p = 0.829) nor for majors (p = 0.598) in the psychosocial impact of dental aesthetics. Total and subscale PIDAQ scores differed significantly among the 3 IOTN grades. PIDAQ scores strongly correlated with Eysenck personality. The dimensions of extraversion and neuroticism, and dental health component grades had significant impact on participants' psychosocial well-being of dental aesthetics.

CONCLUSIONS

Neurotic people with high self-concerns perceived greater psychosocial impact. Outgoing people appear to be less affected psychosocially by dental aesthetics.

Prevalence of malocclusion and orthodontic treatment needs among young adults in Jeddah city

OBJECTIVE

To assess the prevalence of malocclusion and orthodontic treatment needs in a Saudi sample of Jeddah city.

MATERIALS AND METHODS

A cross-sectional (descriptive) study was performed in 2017 among 3016 subjects (1507 females and 1509 males) selected according to stratified random sampling design. The inclusion criteria were Saudi students aged between 14-18 years with no craniofacial deformities or syndromes and no orthodontic treatment carried out. Malocclusion was assessed using the modified Bjork et al. system, and Angle's classification and orthodontic treatment need to be evaluated by using the IOTN (DHC). Descriptive, associations and gender differences were assessed by one-way ANOVA, Chi-square, and Fisher exact tests. Data was analyzed using STATA version 13.0 (StataCorp, College Station, Texas, USA). Statistical significance was set at P < 0.05.

RESULTS

Approximately 12% of the participants had normal occlusion, 57% had Class I malocclusion, 17% had Class II malocclusion, and 14% had Class III malocclusion. The highest prevalence of malocclusion traits was for displacement, followed by a crossbite. The IOTN results revealed slight need for orthodontic treatment in (n = 795-26%) moderate/borderline in (n = 1166-39%), and great need in (n = 1055-35%). Class II and III malocclusion, OJ, reverse overjet, scissor bite, open bite, midline discrepancies, and crowding were significantly higher in males than females (P < 0.05).

CONCLUSION

Overall, there was a high prevalence of malocclusion and high orthodontic treatment need. The most common malocclusion was Class I. The most common orthodontic treatment need was moderate to borderline.

Prevalence of malocclusion and orthodontic treatment needs among 12-15 years old school children in Patna, Eastern India

Context

The people around the world are concerned about the aesthetic oral-facial structures as it is more important in interpersonal interactions and dictates vocal, physical, and emotional communication.

Aims

The present study was conducted to assess the severity of malocclusion and orthodontic treatment need among 12-15-year-old school children of Patna, Eastern India.

Settings and Design

A cross-sectional study design was used to assess the severity of malocclusion using Dental Aesthetic Index (DAI) index among 12-15-year-old school-going children.

Methods and Material

A specially prepared and pretested format, exclusively designed for recording all the required and relevant general information and other clinical findings was used in the study. The sample size consisted of 902 children from middle schools (Government and Private) in Patna.

Statistical Analysis Used

Chi-square test was done for the categorical data to compare differences between two independent groups. Data were presented as Mean ± SD and "P" value of less than 0.05 was accepted as indicating significance.

Results

Around 5.3% had a DAI score of ≤25 which signifies that there is "no abnormality or may have minor malocclusion"; 15.3% had a DAI score of 26-30 which signifies that there is "definite malocclusion"; 6% had a DAI score of 31-35 which signifies that there is "severe malocclusion" and 4% had a DAI score of ≥36 which signifies that there is "very severe or handicapping malocclusion". The finding was more commonly seen among 14 years age group.

Conclusions

It can be concluded from the present study that the prevalence of malocclusion is reasonable high in this part of the region, and it is very important to bring in more awareness at the school level as primary prevention can be the most effective tool in control this menace.

Does Gender Have an Effect on Craniofacial Measurements?

Objective

The aim of this cross-sectional study was to evaluate craniofacial structures in terms of different sagittal relations and gender in adolescent individuals.

Methods

Pre-treatment dental models, lateral cephalometric, and hand-wrist radiographs of 223 adolescent subjects (102 male, 121 female) were evaluated. Subjects were divided into the Angle Class I, II, and III (skeletally) subgroups according to the ANB angle. Four angular and 33 linear measurements were used to evaluate the lateral cephalometric radiographs relative to the R1 and R2 coordinate system. The Kolmogorov-Smirnov test was performed to assess the normal distribution of the data. The independent samples t-test and Mann-Whitney U test were used for the comparison of male and female subjects in each group. The values were considered statistically significant at p<0.05.

Results

The vertical facial dimension was found to be significantly greater in Class I male subjects than in female subjects (SGo, p=0.023; ANS-M, p=0.036), and there was a protrusive maxilla (R2ANS, p=0.038; R2A, p=0.016), while the mandibular sagittal position and the mandibular dimension were similar. The maxilla was placed protrusively (R2ANS, p=0.001; R2A, p=0.002), while the mandible was found to be larger both in the position and dimension (CoGn, p=0.003; R2M, p=0.014) in Class II male subjects. Class III male and female subjects were found to have similar maxillary and mandibular vertical and sagittal location and dimensions.

Conclusion

Class I and II subjects showed more gender variation than Class III subjects. The gender-related results of this study declare that treatment planning of malocclusions should be based on gender differences rather than general treatment procedures, which will be useful in achieving successful orthodontic treatment results.

Prevalence of Need of Orthodontic Treatment in 7-16-Year-Old School Children in Udaipur City, India

Objective

The study aimed to estimate the need of orthodontic treatment in 7-16-year-old school children in Udaipur city, India.

Methods

This cross sectional study enrolled 1029 subjects (661 males and 368 females) belonging to Udaipur city, Rajasthan, India. Subjects who had not undergone orthodontic treatment were randomly selected. The need for orthodontic treatment was assessed using the Dental Health Component of the Index of Orthodontic Treatment Need (IOTN) by the same calibrated examiner. Collected data were quantitatively analyzed, and the difference pertaining to prevalence between males and females was measured using the chi-square test.

Results

A Grade 1 IOTN score was observed in 48.4% of the population. Grade 2 was observed in 22.9% of the population. A significant difference was noted for the prevalence of Grades 1, 2, and 3 between male and female children, with male children showing greater prevalence of malocclusion grades. Grades 4 and 5, which were noted less frequently, did not show a significant difference with respect to sex.

Conclusion

A higher percentage of the sample required moderate orthodontic treatment. This necessitates proper education and motivation to undergo orthodontic treatment.

Localized Bone Loss Resulted from an Unlikely Cause in an 11-Year-Old Child

Periodontal diseases have several causes, amongst them, by foreign bodies. In this case report, an 11-year-old child who lived in a rural area and has never been treated by a dentist presented an extensive horizontal bone loss and edema on the region of tooth 44. The diagnosis of foreign body was obtained after biopsy, since an elastic band around the middle of the root tooth was found. The elastic band was not radiopaque, and the patient did not inform that she found the elastic band on the floor of the school and introduced the tooth by herself. Based on the case reported, it is concluded that anamnesis and clinical and radiographic examination are fundamental strategies to obtain the diagnosis, but sometimes, especially in children, there may be inconsistencies that can be elucidated by a biopsy.

Orthodontic Treatment Need in Higher Primary Schoolchildren of Central Bengaluru, India

Aims and Objective:

The aim of this study was to evaluate the orthodontic treatment need in 11–14-year-old schoolchildren of Central Bengaluru, India, using the index of orthodontic treatment need (IOTN) and to analyze the treatment needs between males and females and correlation between the esthetic to aesthetic (AC) and dental health component (DHC) of IOTN.

Materials and Methods:

The sample comprised 500 schoolchildren (187 females and 313 males) who had not undergone orthodontic treatment. No radiographs, study casts, were used; IOTN was calculated from clinical examination and photographs. The data were analyzed using SPSS 20 IBM version.

Results:

The results for DHC were as follows: 12% students in no need, 52.5% students in little need, 20.5% students in moderate or borderline, 11.5% students in severe need, and 3.5% students were in the category of very severe need for treatment. On evaluating AC components, 91.6% were in the category of no or little need, 2% students in moderate need, and 6.4% in great need category. Mild positive correlation (r = 0.153) between DHC and AC of IOTN was observed. The difference between the IOTN values of boys and girls was not statistically significant.

Conclusions:

More than 50% of the population in our study showed little/no need category which undergoes undiagnosed and may not seek dental treatment at right time to prevent the future complications. This study provides baseline data on the need and demand for orthodontic treatment among the sample which is important for planning public orthodontic and dental services.

Rate of intrusion of maxillary incisors in Class II Div 1 malocclusion using skeletal anchorage device and Connecticut intrusion arch

BACKGROUND

Nonsurgical correction of deep bite involves either extrusion of posterior teeth, intrusion of incisors, or combination of both. The introduction of skeletal anchorage device with microimplant provides near absolute anchorage without producing any untoward effects on anchor unit. Connecticut Intrusion Arch (CIA) provided an efficient system of intruding anterior segment without producing much adverse affects on anchor teeth.

METHODS

The study comprised of 30 patients of Class II Div 1 malocclusion with overbite of >6 mm and required therapeutic extractions of all first premolars, randomly distributed into two groups. Group 1 was treated using orthodontic microimplants, while Group 2 treated with CIA. Lateral cephalograms were taken pre-intrusion (T1) and post-intrusion at the end of six months (T2).

RESULTS

The rate of intrusion was 0.51 and 0.34 mm/month for Group 1 and Group 2 respectively. The average amount of change in centroid point to PP distance and U1-SN angle was significantly higher in Group 1 compared to Group 2 (P < 0.001). The average amount of change in U6 to PP distance did not differ significantly between two study groups (P > 0.05).

CONCLUSION

The amount of intrusion is significantly higher in SAD group. Although vertical molar positional change was higher in CIA group than the SAD group, it was not changed significantly in both treatment modalities. SAD group overall had better results and was easier in handling during intrusion.

Oral health status and treatment needs among 10126 school children in West Godavari district, Andhra Pradesh, India

Objectives:

Oral diseases are affecting a large percentage of children worldwide. This study with Indian Society of Pedodontics and Preventive Dentistry collaboration was taken up with the aim to evaluate the oral health status and treatment needs in school-going children of the West Godavari district, Andhra Pradesh, India.

Materials and Methods:

This cross-sectional study was conducted among 10126 school children who were randomly selected from 32 schools in West Godavari district. To find the significance of the obtained number of cases for different age groups, Chi-square test of significance was used.

Results:

The prevalence of dental conditions are as follows: Dental caries 63.5%, periodontal diseases 13.6%, dental anomalies 3.6%, dental trauma 3.2%, and orthodontic treatment 25.1%. Among the different age groups, 11–14 years age group has the highest prevalence of oral health problems. Females were more affected with dental caries (P = 0.17), orthodontic treatment needs (P = 0.12), and dental anomalies (P = 0.86) compared to males which was statistically insignificant. The highest prevalence of dental conditions in the case of females was observed during the age of 11–14 years, and in males, the peak was seen in the 15–18 years age group.

Conclusions:

This study demonstrated that school-going children in West Godavari district suffer from a high prevalence of dental conditions and have higher treatment needs.

Stability of Palatal Rugae as a Forensic Marker in Orthodontically Treated Cases

The palatal rugae have been used as a reference landmark and identification marker by orthodontists and forensic analysts. However, the reliability of palatal rugae as a forensic marker remains questionable once an individual is subjected to orthodontic treatment. This study aimed at evaluating the changes in the rugae pattern after nonextraction, extraction, and maxillary expansion orthodontic treatment. The lengths and shapes of palatal rugae were evaluated on the pretreatment and post-treatment dental casts of 168 subjects using the Thomas and Kotze classification. Extraction treatment significantly reduced the second and third rugae lengths (p < 0.05), whereas the third rugae length was significantly increased after palatal expansion (p < 0.05). The shape of rugae remained consistent in all the study groups which may be used as a reliable forensic marker in subjects undergoing orthodontic treatment. However, the use of the lengths of palatal rugae in forensic odontology must be made with caution.