AMELOBLASTOMA ODONTOGENIC TUMORS

An Ameloblastoma is one of the most common odontogenic tumors. The treatment of ameloblastoma has been controversial because of this disease entity as a slow-growing, locally invasive tumor with high rate of recurrence. Recurrence rate of ameloblastoma are reported 15% to 25% after radical treatment and 75% to 90% after conservative treatment. On the other hand, Robinson and Gardner reported that the recurrence rate after conservative treatment of unicystic ameloblastoma was lower than those of multicystic or solid lesion. In this report, what we want to show is to review the articles to find out pros and cons of conservative treatment of ameloblastoma. In addition we would like to discuss which requies conservative treatment or radical treatment are more acceptable through our case report.
Ameloblastoma* ; Hand ; Odontogenic Tumors ; Recurrence

OBJECTIVE: This study seeks to describe the relative frequency of benign tumors in the mandible and maxilla, the operations done to manage these tumors at the Philippine General Hospital and compare it to previous reports.

METHODOLOGY: The histopathology records of patients with tumors affecting the mandible and maxilla who underwent biopsy or definitive surgery between January 1993 and December 2005 were included in this study and analyzed.

RESULTS: Out of 1049 cases of tumors of the mandible and maxilla, 566 were benign tumors. Patients had a mean age of 30.77 + 15.70 (Range of 4 mos to 83 years). There is a predilection for males (1.4:1), and the mandible (1.9:1). Ameloblastoma is the most common tumor encountered (266 out of 566 or 47.00 percent). Resection is the most common operation done (380 out of 575 or 66.09 percent). Nine operations were done for tumor recurrence (9 out of 575 or 1.57 percent). Ameloblastoma is the only histologic type of tumor that resulted in recurrence.

CONCLUSION: Benign tumors are more common in the mandible and maxilla. Odontogenic tumor, specifically ameloblastoma, is the most common histologic type. If has specific predilections as to site, age, and gender. In this study, resection is the most common procedure done for this tumor.

OBJECTIVES: The aim of this study was to verify the clinical effectiveness of decompression in decreasing the size of a cyst. In addition to the different types of cysts, we tried to reveal what effect host factors, such as the initial size of the lesion and the age of the patient, have on the velocity of cyst shrinkage. MATERIALS AND METHODS: With the aid of a panoramic view, we measured the size of the cysts before and after decompression in 13 dentigerous cysts (DCs), 14 keratocystic odontogenic tumors (KTOCs), and 5 unicystic ameloblastoma (UA) cases. The velocity of shrinkage in the three cystic groups was calculated. Relationships between the age of the patient, the initial size of the cyst, and the shrinkage velocity were investigated. RESULTS: The three types of cysts showed no inter-type differences in their velocity of shrinkage. However, there was a statistically meaningful relationship between the initial size of the lesion and the absolute velocity of shrinkage in the DC group (P=0.02, R=0.65) and the KTOC group (P=0.02, R=0.56). There was also a significant relationship between the age of the patient and the absolute velocity of shrinkage in the KTOC group (P=0.04, R=0.45) and the UA group (P=0.04, R=0.46). CONCLUSION: There was no difference in the decrease in size due to decompression among the different types of cysts. However, the age of the patient and the initial size of the lesion showed a significant relationship with the velocity of shrinkage.
Ameloblastoma* ; Decompression* ; Dentigerous Cyst* ; Humans ; Odontogenic Cysts* ; Odontogenic Tumors*

Adenomatoid odontogenic tumor (AOT) usually presents as a unilocular, pericoronal radiolucency in the maxillary anterior region in adolescent females. Very few conditions occur in such a narrow age range and at such a restrictive site. Rarely, these tumors present with varied clinical features. A case of AOT of the mandible is reported with unusual features such as large size, multilocular appearance, and aggressive behavior. The role of radiology in diagnosis of atypical AOT is extremely important. The unique radiological manifestations of the lesion helped in the diagnosis, and it was managed conservatively with no evidence of recurrence.
Adolescent ; Ameloblastoma ; Female ; Humans ; Mandible ; Odontogenic Tumors ; Recurrence ; Root Resorption

Ameloblastoma is a common odontogenic tumor originating from the dental lamina, reduced dental epithelium and rests of Malassez, and represents 10% of all odontogenic tumors of the jaw. Unicystic ameloblastoma is normally encountered in young patients, and often occurs in the mandible, and is particularly associated with an impacted tooth. We encountered an unicystic ameloblastoma arising from a dentigerous cyst after the treatment of a radiolucent lesion on the mandible.
Ameloblastoma ; Dentigerous Cyst ; Epithelium ; Humans ; Mandible ; Odontogenic Tumors

Ameloblastoma is the most frequently accuring odontogenic tumor in mouth. The biologic behavior of this neoplasm is locally invasive tumor with a high rate of recurrence. But in case of unicystic ameloblastoma, it was known that the neoplasm can be treated by marsupialization and the recurrence rate is lower. In our clinic, we tried to treat one of ameloblastoma cases by marsupialization and finished the treatment by enucleation via intra-oral approach with sagittal ramus osteotomy. This is a report of that case about 29 years old female patient.
Ameloblastoma ; Female ; Humans ; Mouth ; Odontogenic Tumors ; Osteotomy ; Recurrence

Ameloblastoma is the most frequently accuring odontogenic tumor in mouth. The biologic behavior of this neoplasm is locally invasive tumor with a high rate of recurrence. But in case of unicystic ameloblastoma, it was known that the neoplasm can be treated by marsupialization and the recurrence rate is lower. In our clinic, we tried to treat one of ameloblastoma cases by marsupialization and finished the treatment by enucleation via intra-oral approach with sagittal ramus osteotomy. This is a report of that case about 29 years old female patient.
Ameloblastoma ; Female ; Humans ; Mouth ; Odontogenic Tumors ; Osteotomy ; Recurrence

This is a case of a 54 year old ASA III mle who underwent extirpation of recurrent multiseptated mandibular ameloblastoma; with microvascular fibul free flap reconstruction. the extension of the huge mass into the floor of the mouth and anteriorly into the sub-metal area indicating probable difficult instrumentation during laryngoscopy, necessitated awake fiberoptic guided nasotracheal intubation using dexmedetomidine sedation. Anesthesia was maintained with oxigen- isoflurane at 0.8-1.5 volue percent, atracurium infusion at 0.2 mg/kg/ hour, fetanyl infusion at 1-2 mcg/kg/hour. Postoperatively, the patient remained intubated for 7 days.
Human ; Male ; Middle Aged ; AMELOBLASTOMA ; ODONTOGENIC TUMORS ; DEXMEDETOMIDINE

Common radiographic appearances of ossifying fibroma (OF) are well demarcated margin, radiolucent or mixed lesion. Lesions for the radiographic differential diagnosis with OF include fibrous dysplasia, focal cemento-osseous dysplasia. Other confusing lesions might be the mixed lesions such as calcifying odontogenic cyst, adenomatoid odontogenic tumor, calcifying epithelial odontogenic tumor, and benign cementoblastoma. We reported three cases of OF in posterior mandible. These cases showed a little distinguished radiographic features of OF and diagnosed from a combination of clinical, radiographic, and histopathologic information. We need to further refine radiographic and histopathological features of OF and other confusing lesions with literatures review because some cases of these lesions are not easily differentiated radiographically and histopathologically.
Ameloblastoma ; Diagnosis, Differential ; Fibroma, Ossifying ; Mandible ; Odontogenic Cyst, Calcifying ; Odontogenic Tumors ; Skin Neoplasms