scholarly journals Bilateral Mesiodens in Monozygotic Twins: 3D Diagnostic and Management

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Carla Vecchione Gurgel ◽  
Ana Lídia Soares Cota ◽  
Tatiana Yuriko Kobayashi ◽  
Salete Moura Bonifácio Silva ◽  
Maria Aparecida Andrade Moreira Machado ◽  
...  
Keyword(s):  
High Resolution ◽  
Treatment Plan ◽  
Three Dimensional ◽  
Monozygotic Twins ◽  
Monozygotic Twin ◽  
Permanent Teeth ◽  
Supernumerary Teeth ◽  
Supernumerary Tooth ◽  
3D Images ◽  
Frequent Type

Mesiodens is the most frequent type of supernumerary tooth and may occur in several forms, causing different local disorders, such as impaction of the anterior permanent teeth. High-resolution three-dimensional (3D) images have improved the diagnosis and treatment plan of patients with impacted and supernumerary teeth. The purpose of this paper was to report a case of two mesiodens in monozygotic twin boys with appropriate 3D diagnostic and treatment plan.

scholarly journals Fourth mandibular molar in a pediatric patient – Case report

2015 ◽  
Vol 5 (20) ◽  
pp. 229-231
Author(s):  
Atanas Vlaykov ◽  
Dian Sharlanov ◽  
Dilyana Vicheva
Keyword(s):  
Case Report ◽  
Oral Cavity ◽  
Treatment Modality ◽  
Treatment Plan ◽  
Female Child ◽  
Permanent Teeth ◽  
Radiographic Examination ◽  
Supernumerary Teeth ◽  
Patient Case ◽  
Mandibular Molar

Abstract Background. Supernumerary teeth are described as an excess of the normal teeth number of 20 deciduous and 32 permanent teeth and can occur in any dental region. Material and methods. The authors present the case of a 12-year-old female child with a paramolar in the maxilla, discovered accidentally during an orthopantomogram, emphasising the treatment modality and the complications that can appear. Conclusion. Supernumerary teeth can be present in any region of the oral cavity. Both practitioners and clinicians should be aware of the various types of paramolars and make a treatment plan after an accurate clinical and radiographic examination.

A Novel Method for Automated Acquisition of Tilt Series for Electron Tomography Based on Pre-Calibration of the Specimen Stage

2000 ◽  
Vol 6 (S2) ◽  
pp. 1148-1149
Author(s):  
U. Ziese ◽  
A.H. Janssen ◽  
T.P. van der Krift ◽  
A.G. van Balen ◽  
W.J. de Ruijter ◽  
...  
Keyword(s):  
High Resolution ◽  
3D Reconstruction ◽  
Cell Biology ◽  
Electron Tomography ◽  
Three Dimensional ◽  
Imaging Method ◽  
3D Images ◽  
Tilt Series ◽  
3D Information ◽  
Structural Arrangements

Electron tomography is a three-dimensional (3D) imaging method with transmission electron microscopy (TEM) that provides high-resolution 3D images of structural arrangements. Conventional TEM images are in first approximation mere 2D-projections of a 3D sample under investigation. With electron tomographya series of images is acquired of a sample that is tilted over a large angular range (±70°) with small angular tilt increments (so called tilt-series). For the subsequent 3D-reconstruction, the images of the tilt series are aligned relative to each other and the 3D-reconstruction is computed. Electron tomography is the only technique that can provide true 3D information with nm-scale resolution of individual and unique samples. For (cell) biology and material science applications the availability of high-resolution 3D images of structural arrangements within individual samples provides unique architectural information that cannot be obtained otherwise. Routine application of electron tomography will comprise a major revolutionary step forward in the characterization of complex materials and cellular arrangements.

Prevalence and Characteristics of Supernumerary Teeth in Israeli Orthodontic Patients

2019 ◽  
Vol 43 (4) ◽  
pp. 244-251 ◽  
Author(s):  
Tamar Finkelstein ◽  
Yehoshua Shapira ◽  
Aikaterini Maria Pavlidi ◽  
Shirley Schonberger ◽  
Sigalit Blumer ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Study Design ◽  
Anterior Region ◽  
Permanent Teeth ◽  
Supernumerary Teeth ◽  
Supernumerary Tooth ◽  
Tel Aviv ◽  
Orthodontic Patients ◽  
Maxillary Incisors ◽  
Pre Treatment

Background: Supernumerary teeth are one of the most common anomalies in the human dentition, found most frequently in the maxillary anterior region causing impaction or displacement of the adjacent permanent teeth. Aim :The purpose of this retrospective study was to determine the prevalence and characteristics of supernumerary teeth in orthodontically treated patients. Study design: Pre-treatment facial and intraoral photographs, study models, panoramic and periapical radiographs of 3,000 consecutively treated orthodontic patients (mean age 12.2 years) from the Department of Orthodontics Tel Aviv University, were examined to detect supernumerary teeth in both arches. They were recorded according to gender, age, number, location, position and morphology. Results: Thirty-six patients, 22 (61%) males and 14 (39%) females with 50 supernumerary teeth, of which 42 (84%) were found in the maxillary anterior region, and 8 (16%) in the mandible, presenting a prevalence of 1.2%. Conclusions: A prevalence of 1.2% was found in our study. The most common supernumerary tooth is mesiodens located at the maxillary anterior region. The characteristics of supernumeraries were based on their morphology, location and position. The most frequent complications caused were rotations, displacement and arrested eruption of maxillary incisors.

scholarly journals Multifunctional Templates for Minimized Osteotomy, Implantation, and Palatal Distraction with a Mini-Screw-Assisted Expander in Schizodontism and Maxillary Deficit

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Manfred Nilius ◽  
Katrin Hess ◽  
Dominik Haim ◽  
Bernhard Weiland ◽  
Guenter Lauer
Keyword(s):  
Minimally Invasive ◽  
Three Dimensional ◽  
Young Patients ◽  
Growth Conditions ◽  
Interdisciplinary Treatment ◽  
Permanent Teeth ◽  
Orthodontic Appliances ◽  
Supernumerary Teeth ◽  
Dental Implantation ◽  
One Step

Purpose. Schizodontism is complete separation of a dental germ. It results in a twin tooth and supernumerary teeth. The treatment of transverse constriction in combination with supernumerary dental germs and impacted central incisors can pose a challenge, especially in young patients, when the number of permanent teeth is not adequate to ensure secure anchorage. The use of navigation templates based on three-dimensional X-ray images allows for precise insertion of temporary mini-implants for the acquisition of palatal distractors. In addition, templates allow for minimally invasive biopsies and osteotomies. Methods. The treatment of schizodontism, dentitio tarda, and transverse constriction is to be assessed as an interdisciplinary method by using mini-screw-assisted devices. Minimized osteotomy of impacted supernumerary teeth or dental implantation can be carried out in a one-step-procedure based on digital preplanning and prefabrication of orthodontic devices. Results. Multifunctional templates allow for early planning, preoperative fabrication, and intraoral fixation of orthodontic appliances. In the case of an adolescent patient, a sustainable, interdisciplinary treatment concept could be demonstrated that shows age-appropriate gnathological development and stable growth conditions over a follow-up period of 10 years. Conclusion. One can likely assume that multifunctional templates allow for minimally invasive one-step surgeries as an interdisciplinary tool between orofacial surgery and modern orthodontics.

Fast 3D image reconstruction algorithm based on artificial intelligence technology

2021 ◽  
pp. 002072092098504
Author(s):  
An Weigang ◽  
Pan Jinxiao
Keyword(s):  
Artificial Intelligence ◽  
High Resolution ◽  
Image Reconstruction ◽  
Three Dimensional ◽  
Feature Analysis ◽  
3D Image ◽  
3D Images ◽  
Dimensional Image ◽  
Fine Grained ◽  
3D Image Reconstruction

In order to improve the 3D reconstruction capability of high-resolution fine-grained 3D images, a fast 3D image reconstruction algorithm based on artificial intelligence technology is proposed. The cross-gradient sharpening detection method is used to collect features and extract information from high-resolution fine-grained three-dimensional images, and establish an edge contour feature detection model for high-resolution fine-grained three-dimensional images. Combining the salient feature analysis method and the subspace feature analysis method to cluster and analyze the high-resolution fine-grained three-dimensional image. In the artificial intelligence environment, the saliency of the three-dimensional image is detected and analyzed, and the multi-dimensional segmentation and gray histogram of the high-resolution fine-grained three-dimensional image are reconstructed through the subspace segmentation method. According to the reconstruction results of the gray histogram, fast 3D image reconstruction and image fusion processing are performed. Finally, the accurate detection and recognition of the reconstructed image is realized. The simulation results show that this method has a good effect on 3D image reconstruction, and the time cost of image reconstruction is relatively short. It improves the recognition and feature analysis capabilities of high-resolution fine-grained 3D images, and has good application value in the reconstruction, detection and recognition of high-resolution fine-grained 3D images.

Palatally erupted twin mesiodens - A case report with literature review

2018 ◽  
Vol 10 (1) ◽  
pp. 32-36
Author(s):  
Karthik J Kabbur ◽  
Hemanth M ◽  
Preeti Patil ◽  
Ramnarayan B K ◽  
Reshma Deepak
Keyword(s):  
Case Report ◽  
Root Resorption ◽  
Cyst Formation ◽  
Permanent Teeth ◽  
Radiological Evaluation ◽  
Supernumerary Teeth ◽  
Supernumerary Tooth ◽  
Short Root ◽  
Dental Lamina ◽  
Delayed Eruption

Mesiodens is the most common supernumerary tooth and is present in the midline between the two central incisors. It occurs mostly due to hyperactivity of the dental lamina. They are usually small, with a cone shaped crown and a short root, may be single or paired, erupted or impacted and occasionally even be inverted. Presence of more than one mesiodens is termed as mesiodentes. Presence of mesiodens may cause impaction or delayed eruption of permanent teeth, malocclusion leading to disturbance in chewing, swallowing and speech, root resorption of the adjacent teeth, impaired dentofacial aesthetics, and sometimes cyst formation. The erupted mesiodens can be easily diagnosed clinically, and the unerupted ones are best diagnosed by clinical and radiological evaluation. Although mesiodens is the most common supernumerary teeth, presence of double mesiodens is uncommon. In this paper we describe a case of palatally erupted double mesiodens and its management in a 20year old girl.

Management of Mesiodens and ectopically Erupted Central Incisor

2016 ◽  
Vol 8 (1) ◽  
pp. 49-53
Author(s):  
Mebin George Mathew
Keyword(s):  
Central Region ◽  
Orthodontic Treatment ◽  
Early Recognition ◽  
Permanent Teeth ◽  
Central Incisor ◽  
Supernumerary Teeth ◽  
Supernumerary Tooth ◽  
Ectopic Eruption ◽  
Pediatric Dentists

ABSTRACT Pediatric dentists come across children and developing malocclusion at the earliest, early recognition and interception could avoid long-term laborious orthodontic treatment. Mesiodens are the most common supernumerary teeth, in the central region of the premaxilla, between the two central incisors, which may be the cause for a variety of irregularities in the developing occlusion, in particular, can lead to the impaction or ectopic eruption of adjacent permanent teeth, in the most esthetically important zone. Presented here is a case of management of ectopically erupted right permanent central incisor caused due to supernumerary tooth. How to cite this article Nagaveni NB, Poornima P, Valsan A, Mathew MG. Management of Mesiodens and ectopically Erupted Central Incisor. CODS J Dent 2016;8(1):49-53.

scholarly journals Supernumerary tooth in lower incisor region: A case report

2010 ◽  
Vol 57 (4) ◽  
pp. 220-224 ◽  
Author(s):  
Djurica Grga ◽  
Bojan Dzeletovic
Keyword(s):  
Panoramic Radiography ◽  
Accurate Diagnosis ◽  
Diagnostic Methods ◽  
Permanent Teeth ◽  
Supernumerary Teeth ◽  
Supernumerary Tooth ◽  
Anterior Maxilla ◽  
Lower Incisor ◽  
Dental Office ◽  
The Right

Supernumerary teeth are defined as any supplementary tooth in addition to usual configuration of twenty deciduous and thirty-two permanent teeth. They are most commonly found in the anterior maxilla and mandibular bicuspid region. Although supernumerary teeth have been reported in the incisor region of the mandible, they are very rare. It has been confirmed that approximately 25% of permanent supernumerary teeth appear in the mouth, the rest remains unerupted. The aim of this study was to present a case of single, erupted, supernumerary tooth in the right incisal region of the mandible. A patient showed up at the dental office complaining about aesthetic problem caused by a supernumerary tooth in mandibular incisal region. On intraoral examination, a supernumerary tooth, conical in shape and labially positioned, between the tooth 42 and 43, was observed. On previously taken panoramic radiogram, six months ago, the supernumerary tooth was undetected. Because the supernumerary tooth was masked by the denser overlying cortical bone, it was difficult to interpret the radiogram correctly. It should be noted that panoramic radiography does not guarantee accurate diagnosis of supernumerary teeth, therefore additional diagnostic methods are required.

scholarly journals NONSYNDROMIC CONCOMITANT HYPO-HYPERDONTIA: REPORT OF A RARE CASE

2019 ◽  
Author(s):  
Niharika Pandey ◽  
Parthsarthi Gautam ◽  
Satabdi Saha ◽  
Subrata Saha
Keyword(s):  
Genetic Factors ◽  
Rare Condition ◽  
Mixed Dentition ◽  
Permanent Teeth ◽  
Radiographic Examination ◽  
Routine Practice ◽  
Unknown Aetiology ◽  
Central Incisor ◽  
Supernumerary Teeth ◽  
Supernumerary Tooth

Odontogenic anomalies are frequently observed by pedodontists in their routine practice. Concomitant hypodontia and hyperdontia is a rare condition of unknown aetiology. CHH may occur in both the jaws and is more common in the permanent and mixed dentition. This article, describes a case of non-syndromic CHH in the mixed dentition. Genetic factors probably play an important etiological role in the co-occurrence of partial anodontia and supernumerary teeth. A 7 year old boy showed a conical mesiodens and missing right primary central incisor. Radiographic examination of the patient revealed presence of succedaneous permanent teeth. Key Words: Concomitant hypohyperdontia, hypodontia, supernumerary tooth, mesiodens

Supernumerary Teeth in Premolar and Molar Regions and their Effect on Overall Restorative Treatment Plan

2016 ◽  
Vol 6 (4) ◽  
pp. 98-101
Author(s):  
Sadhana A Raina
Keyword(s):  
Oral Cavity ◽  
Treatment Plan ◽  
Third Molar ◽  
Radiographic Examination ◽  
Supernumerary Teeth ◽  
Supernumerary Tooth ◽  
Restorative Treatment ◽  
Normal Number ◽  
Clinical Problems ◽  
Molar Region

ABSTRACT Supernumerary tooth, also known as hyperdontia, is the condition where more than the normal number of teeth is present. By definition, the supernumerary teeth are the extra teeth present in the oral cavity. They can be found in the region of oral cavity, but are common in the maxilla than mandible.   Supernumerary teeth may be encountered by the dental practitioner as a chance finding on a radiograph or as the cause of an impacted central incisor. Their presence may give rise to a variety of clinical problems. Detection of supernumerary is best achieved through clinical and radiographic examination. This article shows the cases of supernumerary teeth in mandibular premolar region and maxillary third molar region along with its etiology, frequency, classification, complication, and management. How to cite this article Raina SA. Supernumerary Teeth in Premolar and Molar Regions and their Effect on Overall Restorative Treatment Plan. Int J Prosthodont Restor Dent 2016;6(4):98-101.

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