Comparison of Electrophysiological Indices of Children With Attention Deficit Hyperactivity Disorder (ADHD) Comorbid With and Without Reading Disorder (ADHD & RD)

BackgroundAttention Deficit Hyperactivity Disorder (ADHD) is a neuropsychiatric disorder. Most children and adolescents with ADHD have at least some developmental or mental disorders identified from the early years of elementary school. The most common of these are educational and learning problems in these children, which are probably due to the attention deficits of these children. Therefore, it is expected that the cortical activity pattern of ADHD children is different from ADHD comorbid with learning disabilities, which we have examined in this study.MethodsThis study evaluated the pattern of cortical activity in children 6 to 12 years old with ADHD comorbid with and without the reading disorder (ADHD & RD) using 21-channel electroencephalography. Multivariate analysis of variance with repeated measures in a 2 * 3 * 7 design and T-test was used for statistical analysis.ResultsThe results show that in ADHD children, the activity of different bands increases compared to ADHD comorbid with RD children. In the ADHD group compared to the ADHD comorbid with RD group, the theta/beta ratio in all three regions, especially the anterior region, is higher than the theta/alpha activity in those areas, and this group has significantly higher activity in all three brain regions, especially the anterior region, compared to ADHD comorbid with RD patients.ConclusionsFunctional changes in the left parietal cortex, which is part of the frontoparietal attention network and involved in phonological processing, reading, and calculation, are evident in children with ADHD comorbid with and without the reading disorder (ADHD & RD). However, ADHD without reading disorder shows more activation of the frontoparietal network than ADHD comorbid with reading disorder, and therefore it can be said that ADHD without reading disorder exerts more cognitive control. Therefore, it is likely to be possible to prevent educational problems in these children by using neurofeedback or prescribing drugs that increase the activity of the areas involved in attention.

Management of Crossbite in Anterior Region Due to Over-retained Deciduous Teeth in an Adolescent – a Case Report

The deciduous teeth which are retained beyond the age of exfoliation are termed as over-retained deciduous teeth. There are numerous reasons for such teeth which include congenital absence or impaction or translation or transmigration of successor teeth or maybe because of existence of some kind of pathology, such as cysts, tumours, and odontoma under the primary tooth that results in the impaction of successor teeth. It may also be due to partial or total microdontia of permanent dentition. This leads to malalignment in permanent dentition which indirectly hampers the normal growth of the jaws. This case report shows several after-effects of over retained teeth along with the concerned multiple treatment options.

IMPLANT IN ESTHETIC ZONE: COMPLICATION AND MANAGEMENT

Osseointegration is not the only sign for successful dental implant, esthetic is one of the main criteria for it. In today's modern dentistry, implants are mostly use in restoring partially or fully edentulous patients. Success of implant is difcult to obtain as there are many complication which occur during and after placement. Anterior region is the esthetic concerned area, where many complications can be seen. So this article focuses on the complications that occur in esthetic zone including the management of each complication.

Investigating the Effect of Nonrigid Connectors on the Success of Tooth-and-Implant-Supported Fixed Partial Prostheses in Maxillary Anterior Region: A Finite Element Analysis (FEA)

Objective. This study was designed to assess the effect of nonrigid connectors (NRCs) and their location in the success of tooth-and-implant-supported fixed prostheses in the maxillary anterior region by finite element analysis (FEA). Materials and Methods. Three 3D FEA models were designed, presuming maxillary lateral incisor and canine to be extracted. Implant (replacing canine), abutment, bone (spongious and cortical), central incisor (containing dentin, root cement, gutta-percha, and casting post and core), periodontal ligament, and three three-unit cemented PFM prostheses (a rigid one and two nonrigid) were modeled. The NRC was once in the tooth side and once in the implant side. The prostheses were loaded twice: 250N to the incisal edges (0° to the long axis) and 200 N to the cingula (45° to the long axis). The von-Mises stress and vertical displacement were analyzed. Results. Under both vertical and oblique loadings, the rigid model presented the highest stress. Under vertical loading, the NRC caused a significant decrease in the applied stress to the prosthesis, bone, implant, and tooth. Locating the NRC in the tooth side decreased the applied stress to the prosthesis and NRC. Under oblique loading, prosthesis and implant tolerated less stress in the presence of an NRC. Placing the NRC in the tooth side resulted in the least stress in all of the components except for porcelain and patrix. Vertical displacement of the tooth apex was approximately equal in all models. Conclusion. Using an NRC on the tooth side is the most efficient method in reducing the applied stress to prosthesis, implant, tooth, and bone. The amount of intrusion is not dependent on using an NRC or not.

Mapping of a multilayer panoramic radiography device

Objective: To map the shape, location, and thickness of the focal trough of a panoramic radiography device with a multilayer imaging program. Methods: An acrylic plate (148 × 148 × 3 mm) containing 1156 holes distributed in a matrix of 34 × 34 rows was placed in the OP300 Maxio at the levels of the maxilla and mandible. 20 metal spheres (3.5 mm in diameter) were placed on the holes of the plate under 15 different arrangements and panoramic images were acquired for each arrangement at 66 kV, 8 mA, and an exposure time of 16 s. The resulting panoramic radiographs from the five image layers were exported, the horizontal and vertical dimensions of the metal spheres were measured in all images using the Image J software, and the magnification and distortion rates of the spheres were calculated. All metal spheres presenting a magnification rate lower than 30% in both vertical and horizontal dimensions and a distortion rate lower than 10% were considered to map the focal troughs of each of the five image layers. Results: All panoramic image layers had a curved shape ranging from 39° to 51° for both dental arches and varied in position and thickness. The anterior region of maxilla was anteriorly displaced when compared to the anterior region of the mandible for all layers. Image layers are thicker at the level of the mandible than those at the level of the maxilla; also, inner layers were thinner and outer layers were thicker. Conclusion All image layers in the studied panoramic radiography device had a curved shape and varied in position and thickness. The anterior region of maxilla was anteriorly displaced when compared to that of the mandible for all layers.

SIMPLE BONE CYST OF THE MANDIBLE: A CASE REPORT AND LITERATURE REVIEW

Simple bone cyst is a benign pseudo cystic cavity in the bone that is less commonly associated in the maxillofacial region. The other synonyms are traumatic bone cyst or idiopathic bone cyst. These cysts are devoid of an epithelial lining and usually contain straw-colored fluid or is empty. Simple bone cyst is mainly seen in young individuals, frequently during the first and second decade of life. Here we report a case of simple bone cyst of a mandibular anterior region in a 21-year-old patient.

AN IMPACTED, INVERTED AND ROTATED MAXILLARY CENTRAL INCISORS AND ITS SURGICAL MANAGEMENT: A CASE REPORT.

A female patient aged 13 years was referred to the Department of Oral and Maxillofacial Surgery, CSMSS Dental College, Aurangabad, Maharashtra, India with a complaint of a missing tooth in the upper anterior region of the jaw. The patient was apparently healthy with no relevant family, medical and dental history. This case is peculiar due to the fact that the impacted maxillary central incisors are not frequently reported in our routine dental practice. Here, a case of impacted maxillary left permanent central incisors, with only a few reported cases in the literature, is presented. On radio diagnosis, it was observed that the tooth was sprawling in an inverted position in the anterior region of the maxilla with mild dilaceration. Moreover, the tooth was located beneath the remnants of the root stumps of the deciduous maxillary central incisors and lateral incisors. The treatment for this case was planned with mutual efforts of the orthodontists, the oral surgeon, and the patient with his parents. The most appropriate treatment of choice for this case was the Surgical extraction of the impacted maxillary central incisor along with the root stumps of deciduous teeth that were performed under local anaesthesia without any hindrance to the nasal floor

Peri Implant Aesthetics - An Integrated Review

BACKGROUND Aesthetic dentistry is making its own new position in current scenario. The aesthetic desire of patient has become need of an hour and it is essential for dental practitioner to understand the aesthetics of implants. For planning of implants in anterior region, overall general health of patient should be considered including systemic health, good oral hygiene practice and good compliance of patients. The peri-implant aesthetics is determined by two components - soft tissue and hard tissue, which includes bone and gingiva. Modifications refining the tissues around implant can enhance the aesthetics. Treatment protocol should include pre-planning of all functional and aesthetic considerations which should be discussed to patients as well prior to preceding treatment of implant. Judicious understanding of these factors can not only provide physical integrity of tissue but also prevent future aesthetics and implant failure. Implants in anterior region become challenging for clinicians to emulate what nature has provided. The harmonious relationship between functional stability and peri-implant soft tissue becomes an essential requisite for successful endosseous implant so as to attain proper facial aesthetics. Visualization of aesthetics related to implants is a complex phenomenon which requires utilization of multidisciplinary approach including prosthetic and periodontal consideration as the implant position as well implant abutment junction if placed at improper position can cause bone resorption. Compiling this, comprehensive knowledge regarding soft and hard tissue can help dentists to integrate a balance between the smile and face of an individual. This review article is a detailed endeavour to explore peri-implant aesthetics. KEY WORDS Crestal Bone, Dental Aesthetics, Gingiva, Peri-Implant Aesthetics

Compound odontoma in the anterior region of the mandible: clinical case report

Odontomas are classified as a malformation where epithelial and mesenchymal cells have the ability to produce dental tissues such as enamel and dentin. Of unknown etiology, they are often associated with failure of eruption of permanent teeth and / or late impaction or exfoliation of deciduous teeth. Surgical removal is the therapeutic option of choice for the treatment of this condition, since its presence can cause some intercurrences as root resorptions of the neighboring teeth. The objective of this case report is to describe a surgical approach for the removal of a composite odontoma in the anterior region of the mandible, where after a 5-year postoperative follow-up, it was possible to observe in radiographic and tomographic analyses, small images of radiopaque characteristic compatible with recurrence tumor, hypercalcification or remnant of the lesion.