scholarly journals Surgical Management of Compound Odontoma Associated with Unerupted Tooth

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Andrea Pacifici ◽  
Daniele Carbone ◽  
Roberta Marini ◽  
Luciano Pacifici
Keyword(s):  
Therapeutic Option ◽  
World Health ◽  
Permanent Teeth ◽  
Surgical Removal ◽  
Pulp Tissue ◽  
World Health Organization Classification ◽  
Dental Tissues ◽  
Minimally Invasive Surgical ◽  
Health Organization ◽  
Compound Odontoma

Odontomas represent the most common type of odontogenic benign jaws tumors among patients younger than 20 years of age. These tumors are composed of enamel, dentine, cementum, and pulp tissue. According to the World Health Organization classification, two distinct types of odontomas are acknowledged: complex and compound odontoma. In complex odontomas, all dental tissues are formed, but appeared without an organized structure. In compound odontomas, all dental tissues are arranged in numerous tooth-like structures known as denticles. Compound odontomas are often associated with impacted adjacent permanent teeth and their surgical removal represents the best therapeutic option. A case of a 20-year-old male patient with a compound odontoma-associated of impacted maxillary canine is presented. A minimally invasive surgical technique is adopted to remove the least amount of bone tissue as far as possible.

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

2021 ◽  
Vol 10 (13) ◽  
pp. e50101320987
Author(s):  
Eduardo Quintão Manhanini Souza ◽  
Vinícius Franzão Ganzaroli ◽  
Igor Rodrigues de Almeida ◽  
Jéssica de Oliveira Alvarenga Freire ◽  
Luy de Abreu Costa ◽  
...  
Keyword(s):  
Case Report ◽  
Therapeutic Option ◽  
Anterior Region ◽  
Permanent Teeth ◽  
Deciduous Teeth ◽  
Unknown Etiology ◽  
Surgical Removal ◽  
Dental Tissues ◽  
Compound Odontoma

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.

scholarly journals Erupting Compound Odontome - A Case Report

2021 ◽  
Vol 10 (18) ◽  
pp. 1361-1364
Author(s):  
Shreyas N. Shah ◽  
Falguni Patel
Keyword(s):  
World Health Organization ◽  
World Health ◽  
Radiographic Evaluation ◽  
Dental Tissue ◽  
Odontogenic Tumours ◽  
Dental Tissues ◽  
Odontogenic Epithelium ◽  
Complex Odontoma ◽  
Health Organization ◽  
Compound Odontoma

Odontomas are asymptomatic, benign odontogenic tumours comprised of dental tissue. Most of the cases usually get detected on routine radiographic evaluation. Odontoma can be classified according to morphology in two different variants, compound odontoma showing anatomic similarity or miniature version of the tooth and complex odontoma having irregular masses with different type of dental tissues. Early detection of such type of silent lesion is mandatory to rule out certain silent but aggressive pathologies. Here, we present a case of erupting compound odontoma of maxillary area in 15-year-old male patient. Development of tooth is a result of complicated interaction between ectodermal and ecto mesenchymal tissue. Sometimes the remnants of such tissues are left behind in the jaw after development and eruption of tooth, which can become a source of development of odontogenic lesions later on.1 As revealed by World Health Organization (WHO), Odontogenic tumours can be classified in three different categories according to their histopathological form.2 1. Odontogenic tumours which develop from odontogenic epithelium without involvement of odontogenic ectomesenchyme, 2. Odontogenic tumours which develop from odontogenic epithelium with involvement of odontogenic ectomesenchyme, with or without formation of dental hard tissue and 3. Odontogenic tumours which develop from odontogenic ectomesenchyme with or without involvement of odontogenic epithelium.2 For such lesions “Odontoma” word was initially given by Paul Broca in 1866, who revealed the term as tumour occurred by the overgrowth of entire dental tissue. The growth of absolutely differentiated epithelial cells as functional ameloblast and mesenchymal cells as functional odontoblast can give rise to a different developmental anomaly coined as Odontomas.3 According to their behaviour and composition, odontomas can be considered as malformations or hamartomas rather than a true neoplasm. 4,5,6 In 2005, World Health Organization (WHO) classified two variants of odontomas, 1. Compound odontomas, which typically appears as unilocular lesions containing multiple radiopaque, tiny tooth like structures commonly known as denticles; and 2. Complex odontomas, which is comprised of an irregular mass of soft and hard dental tissues.

Primary Teeth and Hair as Indicators of Environmental Pollution

2016 ◽  
Vol 40 (2) ◽  
pp. 152-155 ◽  
Author(s):  
TE Shishniashvili ◽  
NN Suladze ◽  
VV Margvelashvili
Keyword(s):  
Environmental Pollution ◽  
Toxic Elements ◽  
Chemical Elements ◽  
Epidemiological Survey ◽  
Essential Elements ◽  
World Health ◽  
Dental Tissues ◽  
Dental Hard Tissues ◽  
Hard Tissues ◽  
Health Organization

Objectives: To study the influence of environmental pollution on the mineralization of dental hard tissues by using biosubstrates: teeth and hair. :Study design: At the first stage epidemiological survey was conducted in polluted and less polluted areas of Tbilisi (Georgia). We studied 525 children aged 3 and 4 years. Caries prevalence and intensity was defined by the methodology of World Health Organization. At the second stage the chemical elements content was studied in hair and teeth hard tissues of 24 children by X - ray fluorescent spectroscopy method. Results: The prevalence of dental caries in the polluted region was 46%, caries intensity − 1.92 (± 2.842). In the less polluted region prevalence was 37%, caries intensity − 1.47 (± 2.571). These data are statistically reliable (p < 0.05). The study of hair and tooth tissues showed that the toxic elements (Pb, Hg, Sn, Ti) content in these tissues was higher in environmentally unfavorable than in favorable conditions. Conclusion: Hair and dental tissues can be used as indicators of environmental pollution. Our survey showed that toxic elements content in dental hard tissues was higher and the level of essential elements was less in polluted than in less polluted areas of Tbilisi.

scholarly journals Recent Updates on Neuroendocrine Tumors From the Gastrointestinal and Pancreatobiliary Tracts

2016 ◽  
Vol 140 (5) ◽  
pp. 437-448 ◽  
Author(s):  
Joo Young Kim ◽  
Seung-Mo Hong
Keyword(s):  
World Health Organization ◽  
Neuroendocrine Tumors ◽  
Classification Scheme ◽  
Neuroendocrine Cells ◽  
Labeling Index ◽  
World Health ◽  
World Health Organization Classification ◽  
Clinicopathologic Characteristics ◽  
Ki 67 ◽  
Health Organization

Context.—Gastrointestinal (GI) and pancreatobiliary tracts contain a variety of neuroendocrine cells that constitute a diffuse endocrine system. Neuroendocrine tumors (NETs) from these organs are heterogeneous tumors with diverse clinical behaviors. Recent improvements in the understanding of NETs from the GI and pancreatobiliary tracts have led to more-refined definitions of the clinicopathologic characteristics of these tumors. Under the 2010 World Health Organization classification scheme, NETs are classified as grade (G) 1 NETs, G2 NETs, neuroendocrine carcinomas, and mixed adenoneuroendocrine carcinomas. Histologic grades are dependent on mitotic counts and the Ki-67 labeling index. Several new issues arose after implementation of the 2010 World Health Organization classification scheme, such as issues with well-differentiated NETs with G3 Ki-67 labeling index and the evaluation of mitotic counts and Ki-67 labeling. Hereditary syndromes, including multiple endocrine neoplasia type 1 syndrome, von Hippel-Lindau syndrome, neurofibromatosis 1, and tuberous sclerosis, are related to NETs of the GI and pancreatobiliary tracts. Several prognostic markers of GI and pancreatobiliary tract NETs have been introduced, but many of them require further validation. Objective.—To understand clinicopathologic characteristics of NETs from the GI and pancreatobiliary tracts. Data Sources.—PubMed (US National Library of Medicine) reports were reviewed. Conclusions.—In this review, we briefly summarize recent developments and issues related to NETs of the GI and pancreatobiliary tracts.

Patterns of skull base meningioma progression after failed radiosurgery

2007 ◽  
Vol 106 (1) ◽  
pp. 30-35 ◽  
Author(s):  
William T. Couldwell ◽  
Chad D. Cole ◽  
Ossama Al-Mefty
Keyword(s):  
Skull Base ◽  
Stereotactic Radiosurgery ◽  
Growth Patterns ◽  
World Health ◽  
Benign Tumors ◽  
Subtotal Resection ◽  
Surgical Removal ◽  
Skull Base Meningioma ◽  
Number Of Patients ◽  
Health Organization

Object Stereotactic radiosurgery has been reported to be an effective alternative to surgical removal of small to medium benign meningiomas as well as an adjuvant treatment modality to reduce the risk of tumor progression after subtotal resection. Its efficacy has been proved by excellent short-term radiosurgically demonstrated control rates, which have been reported to approach or exceed 90% in many contemporary studies involving the use of either linear accelerator–based systems or the Gamma Knife. Little is known, however, regarding the growth patterns of meningiomas that fail to stabilize after radiosurgery. Methods The authors report 13 cases of benign skull base meningiomas (World Health Organization Grade I) that demonstrated progression after radiosurgical treatment as a primary or an adjuvant therapy. Several tumors demonstrated rapid growth immediately after radiosurgical treatment, whereas other lesions progressed in a very delayed manner in some patients (up to 14 years after treatment). Regardless of the interval after which it occurs, tumor growth can be quite aggressive once it has begun. Conclusions Skull base meningioma growth can be aggressive after failed radiosurgery in some patients, and treatment failure can occur at long intervals following treatment. Special attention must be devoted to such significant occurrences given the increasing number of patients undergoing stereotactic radiosurgery for benign tumors, and careful extended (> 10 years) follow up must be undertaken in all patients after radiosurgery.

scholarly journals The new World Health Organization classification of lung tumours

2001 ◽  
Vol 18 (6) ◽  
pp. 1059-1068 ◽  
Author(s):  
E. Brambilla ◽  
W.D. Travis ◽  
T.V. Colby ◽  
B. Corrin ◽  
Y. Shimosato
Keyword(s):  
World Health Organization ◽  
New World ◽  
World Health ◽  
World Health Organization Classification ◽  
Lung Tumours ◽  
Health Organization
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