Odontoma by definition alone refers to any tumour of odontogenic origion. These are considered to be hamartomatous malformation rather than true neoplasm and are generally asymptomatic. World Health Organization defin...Odontoma by definition alone refers to any tumour of odontogenic origion. These are considered to be hamartomatous malformation rather than true neoplasm and are generally asymptomatic. World Health Organization defines a lesion as the complex odontoma: when the calcified dental tissues are simply arranged in an irregular mass bearing no morphologic similarity to rudimentary teeth. Compound odontomas: composed of all odontogenic tissues in an orderly pattern, which result in many teeth-like structures, but without morphologic resemblance to normal teeth. The goal of this article is to report two cases of the complex odontomas erupted in oral cavity and compound odotome with impacted teeth. The article also aims to report that intra oral approach for removal of odontomas complex or compound small or large is better than extra oral approach.展开更多
<strong>Objectives: </strong>Odontoma is the most common type of odontogenic tumors. Many studies have analyzed the statistical associations between odontoma location and patient age and sex, according to ...<strong>Objectives: </strong>Odontoma is the most common type of odontogenic tumors. Many studies have analyzed the statistical associations between odontoma location and patient age and sex, according to the histological tumor type. However, few studies have assessed odontoma morphological characteristics using cone-beam computed tomography (CBCT). We aimed to evaluate the association between odontoma location and size. <strong>Methods:</strong> We performed CBCT on patients with odontomas (19 patients;10 women, 9 men;average age, 12.6 [range, 6 - 34] years) according to the pathology type at a university hospital between April 2008 and February 2017. The locations of the lesions were noted, and their sizes were measured on CBCT images. Buccolingual, mesiodistal, and vertical diameters of the lesions were recorded on the same slice with the greatest diameters on axial, coronal, and sagittal CBCT images. <strong>Results: </strong>Altogether, 9 (47.4%) and 10 (52.6%) odontomas were located in the mandible and maxilla, respectively. There was no significant difference in the mesiodistal and vertical diameters on the CBCT image between the mandibular and maxillary groups when the odontoma size was compared with location (p < 0.05). However, the average diameters in only the buccolingual diameter were significantly greater in the maxilla. There were no significant differences between the two groups according to sex, age, or histological type. <strong>Conclusions: </strong>These data suggest that the sizes of odontomas in the maxilla are affected by bone expansion in the buccolingual direction, but they may be invariable in most settings. Three-dimensional assessment across the age groups suggests a lack of variation in size.展开更多
Odontoma is a hamartomatous lesion of odontogenic origin involving both epithelial and mesenchymal tissues. Although it is not an uncommon lesion yet in certain conditions it can lead to complications if left untreate...Odontoma is a hamartomatous lesion of odontogenic origin involving both epithelial and mesenchymal tissues. Although it is not an uncommon lesion yet in certain conditions it can lead to complications if left untreated. This is a retrospective review of 30 diagnosed odontoma cases from the archives of Department of Oral & Maxillofacial Surgery, Government Dental College & Hospital, Nagpur, India. Out of these 30 cases, 17 were diagnosed as complex odon toma and 13 cases as compound odontoma. Two of these unusual cases have been described which emphasize the importance of early & appropriate treatment to prevent further morbidity.展开更多
Ectopic odontomas are a rare disease process and need to be in the differential of the Otolaryngologist and Radiologist. Previous reports reveal the most common location to be the maxilla. We present a rare case of od...Ectopic odontomas are a rare disease process and need to be in the differential of the Otolaryngologist and Radiologist. Previous reports reveal the most common location to be the maxilla. We present a rare case of odontoma involving a turbinate causing nasal obstruction and foul-smelling rhinorrhea. Surgical excision is the treatment of choice with an endoscopic approach, if feasible.展开更多
Odontomas are defined as hamartomas of odontogenic origin. They are composed of all dental tissues are represented, occurring in a more or less disorderly pattern. Intraosseous (central) odontomas are the odontogenic ...Odontomas are defined as hamartomas of odontogenic origin. They are composed of all dental tissues are represented, occurring in a more or less disorderly pattern. Intraosseous (central) odontomas are the odontogenic tumors of greatest incidence. Otherwise, odontomas arising in the extraosseous soft tissue, also known as peripheral odontoma, are extremely uncommon. This article presents a case of peripheral odontoma in a child referred to SNUDH for treatment. A 2-year-old girl was referred to The SNUDH regarding an asymptomatic nodule on the left maxillary buccal gingiva. Clinical examination revealed a 7 mm × 6 mm × 3 mm, sessile mucosal lesion on the buccal gingival between #62 and #63. The lesion was firm on palpation and covered with an intact non-ulcerated mucosa. There was no other mucosal pathology. Under N2O-O2 inhalation sedation, an excisional biopsy of the lesion was performed. The diagnosis was peripheral odontoma. Summary: Odontoma in an extraosseous location represents a challenge for diagnosis. This article reports a case of peripheral odontoma and its clinical presentation, histological evaluation and treatment. A 2-year-old girl reported a firm asymptomatic nodule on left maxillary buccal gingival. The procedures for diagnosis included intraoral examination, excisional biopsy and histological analysis. The diagnosis was peripheral odontoma. Peripheral odontoma is rare and the differential diagnosis with other gingival masses is rather difficult and must include inflammatory and reactive processes. The definitive diagnosis is based on microscopic features.展开更多
According to the WHO histological classification of odontogenic tumours, odontomas originate from odontogenic epithelium and odontogenic ectomesenchyme, with or without hard tissue formation. They are generally classi...According to the WHO histological classification of odontogenic tumours, odontomas originate from odontogenic epithelium and odontogenic ectomesenchyme, with or without hard tissue formation. They are generally classified into two types: complex and compound. Odontomas are usually intraosseous and often associated with delayed eruption of teeth. However, they can be extraosseous and are then referred to as either peripheral complex or compound odontoma. Peripheral odontomas are rare entities. We report a case of an 11 year old boy referred to the Department of Oral and Maxillofacial Surgery, Aarhus University Hospital by the boy’s dentist due to fibrous mass in the marginal gingiva in the anterior lower mandible. Removal of the mass revealed a peripheral complex odontoma and at the final 5-month postoperative inspection there was satisfying healing observed, a small, elevated, hyperplastic fibrous marginal gingiva.展开更多
Objective:To identify fish tumour associated bacteria.Methods:The marine fish Sphyraena jello with odontoma was collected from in Tamil Nadu(Southeast India),and tumour associated bacteria were isolated.Then the isola...Objective:To identify fish tumour associated bacteria.Methods:The marine fish Sphyraena jello with odontoma was collected from in Tamil Nadu(Southeast India),and tumour associated bacteria were isolated.Then the isolated bacteria were identified based on molecular characters.Results:A total of 4 different bacterial species were isolated from tumour tissue.The bacterial species were Bacillus sp.,Pontibacter sp.,Burkholderia sp.and Macrococcus sp.,and the sequences were submitted in DNA Data Bank of Japan with accession numbers of AB859240,AB859241,AB859242 and AB859243 respectively.Conclusions:Four different bacterial species were isolated from Sphyraena jello,but the role of bacteria within tumour needs to be further investigated.展开更多
文摘Odontoma by definition alone refers to any tumour of odontogenic origion. These are considered to be hamartomatous malformation rather than true neoplasm and are generally asymptomatic. World Health Organization defines a lesion as the complex odontoma: when the calcified dental tissues are simply arranged in an irregular mass bearing no morphologic similarity to rudimentary teeth. Compound odontomas: composed of all odontogenic tissues in an orderly pattern, which result in many teeth-like structures, but without morphologic resemblance to normal teeth. The goal of this article is to report two cases of the complex odontomas erupted in oral cavity and compound odotome with impacted teeth. The article also aims to report that intra oral approach for removal of odontomas complex or compound small or large is better than extra oral approach.
文摘<strong>Objectives: </strong>Odontoma is the most common type of odontogenic tumors. Many studies have analyzed the statistical associations between odontoma location and patient age and sex, according to the histological tumor type. However, few studies have assessed odontoma morphological characteristics using cone-beam computed tomography (CBCT). We aimed to evaluate the association between odontoma location and size. <strong>Methods:</strong> We performed CBCT on patients with odontomas (19 patients;10 women, 9 men;average age, 12.6 [range, 6 - 34] years) according to the pathology type at a university hospital between April 2008 and February 2017. The locations of the lesions were noted, and their sizes were measured on CBCT images. Buccolingual, mesiodistal, and vertical diameters of the lesions were recorded on the same slice with the greatest diameters on axial, coronal, and sagittal CBCT images. <strong>Results: </strong>Altogether, 9 (47.4%) and 10 (52.6%) odontomas were located in the mandible and maxilla, respectively. There was no significant difference in the mesiodistal and vertical diameters on the CBCT image between the mandibular and maxillary groups when the odontoma size was compared with location (p < 0.05). However, the average diameters in only the buccolingual diameter were significantly greater in the maxilla. There were no significant differences between the two groups according to sex, age, or histological type. <strong>Conclusions: </strong>These data suggest that the sizes of odontomas in the maxilla are affected by bone expansion in the buccolingual direction, but they may be invariable in most settings. Three-dimensional assessment across the age groups suggests a lack of variation in size.
文摘Odontoma is a hamartomatous lesion of odontogenic origin involving both epithelial and mesenchymal tissues. Although it is not an uncommon lesion yet in certain conditions it can lead to complications if left untreated. This is a retrospective review of 30 diagnosed odontoma cases from the archives of Department of Oral & Maxillofacial Surgery, Government Dental College & Hospital, Nagpur, India. Out of these 30 cases, 17 were diagnosed as complex odon toma and 13 cases as compound odontoma. Two of these unusual cases have been described which emphasize the importance of early & appropriate treatment to prevent further morbidity.
文摘Ectopic odontomas are a rare disease process and need to be in the differential of the Otolaryngologist and Radiologist. Previous reports reveal the most common location to be the maxilla. We present a rare case of odontoma involving a turbinate causing nasal obstruction and foul-smelling rhinorrhea. Surgical excision is the treatment of choice with an endoscopic approach, if feasible.
文摘Odontomas are defined as hamartomas of odontogenic origin. They are composed of all dental tissues are represented, occurring in a more or less disorderly pattern. Intraosseous (central) odontomas are the odontogenic tumors of greatest incidence. Otherwise, odontomas arising in the extraosseous soft tissue, also known as peripheral odontoma, are extremely uncommon. This article presents a case of peripheral odontoma in a child referred to SNUDH for treatment. A 2-year-old girl was referred to The SNUDH regarding an asymptomatic nodule on the left maxillary buccal gingiva. Clinical examination revealed a 7 mm × 6 mm × 3 mm, sessile mucosal lesion on the buccal gingival between #62 and #63. The lesion was firm on palpation and covered with an intact non-ulcerated mucosa. There was no other mucosal pathology. Under N2O-O2 inhalation sedation, an excisional biopsy of the lesion was performed. The diagnosis was peripheral odontoma. Summary: Odontoma in an extraosseous location represents a challenge for diagnosis. This article reports a case of peripheral odontoma and its clinical presentation, histological evaluation and treatment. A 2-year-old girl reported a firm asymptomatic nodule on left maxillary buccal gingival. The procedures for diagnosis included intraoral examination, excisional biopsy and histological analysis. The diagnosis was peripheral odontoma. Peripheral odontoma is rare and the differential diagnosis with other gingival masses is rather difficult and must include inflammatory and reactive processes. The definitive diagnosis is based on microscopic features.
文摘According to the WHO histological classification of odontogenic tumours, odontomas originate from odontogenic epithelium and odontogenic ectomesenchyme, with or without hard tissue formation. They are generally classified into two types: complex and compound. Odontomas are usually intraosseous and often associated with delayed eruption of teeth. However, they can be extraosseous and are then referred to as either peripheral complex or compound odontoma. Peripheral odontomas are rare entities. We report a case of an 11 year old boy referred to the Department of Oral and Maxillofacial Surgery, Aarhus University Hospital by the boy’s dentist due to fibrous mass in the marginal gingiva in the anterior lower mandible. Removal of the mass revealed a peripheral complex odontoma and at the final 5-month postoperative inspection there was satisfying healing observed, a small, elevated, hyperplastic fibrous marginal gingiva.
基金Supported by the Ministry of Environment and Forest,Government of India,New Delhi.The project titled“Prevalence of tumours in food fishes of Tamil Nadu coast”(D.O.No.22-31/2010-CS-I).
文摘Objective:To identify fish tumour associated bacteria.Methods:The marine fish Sphyraena jello with odontoma was collected from in Tamil Nadu(Southeast India),and tumour associated bacteria were isolated.Then the isolated bacteria were identified based on molecular characters.Results:A total of 4 different bacterial species were isolated from tumour tissue.The bacterial species were Bacillus sp.,Pontibacter sp.,Burkholderia sp.and Macrococcus sp.,and the sequences were submitted in DNA Data Bank of Japan with accession numbers of AB859240,AB859241,AB859242 and AB859243 respectively.Conclusions:Four different bacterial species were isolated from Sphyraena jello,but the role of bacteria within tumour needs to be further investigated.
