Purpose: This study was performed to identify correlations between keratocystic odontogenic tumor (KCOT) data from CT sections, and data on the KCOT clinical manifestation and resulting dental expenses. Materials and Methods: Following local Institutional Review Board (IRB) approval, a seven-years o...
Purpose: This study was performed to identify correlations between keratocystic odontogenic tumor (KCOT) data from CT sections, and data on the KCOT clinical manifestation and resulting dental expenses. Materials and Methods: Following local Institutional Review Board (IRB) approval, a seven-years of retrospective study was performed regarding patients with KCOTs treated at the Seoul National University Dental Hospital. A total of 180 KCOT were included in this study. The following information was collected: age, gender, location and size of the lesion, radiological features, surgical treatment provided and dental expenses. Results: There was no significant association between the size of the KCOT and age, gender, and presenting preoperative symptoms. In both jaws, it was unusual to find KCOTs under 10 mm. The correlation between the number of teeth removed and the size of the KCOT in the tooth bearing area was statistically significant in the mandible, whereas in the maxilla, no significant relationship was found. Dental expenses compared with the size of the KCOT were found to be significant in both jaws. Conclusion: The size of KCOT was associated with a significant increase in dental expenses for both jaws and the number of teeth removed from the mandible. These findings emphasize the importance of routine examinations and early detection of lesions, which in turn helps preserving anatomical structures and reducing dental expenses.
Purpose: This study was performed to identify correlations between keratocystic odontogenic tumor (KCOT) data from CT sections, and data on the KCOT clinical manifestation and resulting dental expenses. Materials and Methods: Following local Institutional Review Board (IRB) approval, a seven-years of retrospective study was performed regarding patients with KCOTs treated at the Seoul National University Dental Hospital. A total of 180 KCOT were included in this study. The following information was collected: age, gender, location and size of the lesion, radiological features, surgical treatment provided and dental expenses. Results: There was no significant association between the size of the KCOT and age, gender, and presenting preoperative symptoms. In both jaws, it was unusual to find KCOTs under 10 mm. The correlation between the number of teeth removed and the size of the KCOT in the tooth bearing area was statistically significant in the mandible, whereas in the maxilla, no significant relationship was found. Dental expenses compared with the size of the KCOT were found to be significant in both jaws. Conclusion: The size of KCOT was associated with a significant increase in dental expenses for both jaws and the number of teeth removed from the mandible. These findings emphasize the importance of routine examinations and early detection of lesions, which in turn helps preserving anatomical structures and reducing dental expenses.
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가설 설정
Measurements of keratocystic odontogenic tumor in the maxilla using axial computed tomographic images. A. The longest mesiodistal dimension of the cystic lesion is measured parallel to the coronal plane of the maxilla. B.
Measurements of keratocystic odontogenic tumor in the mandible using axial computed tomographic images. A. The longest mesiodistal dimension of the cystic lesion is measured parallel to the long axis of the mandibular body. B.
The longest mesiodistal dimension of the cystic lesion is measured parallel to the coronal plane of the maxilla. B. The longest bucco-lingual dimension of the cystic lesion is measured parallel to the sagittal plane of the maxilla.
The longest mesiodistal dimension of the cystic lesion is measured parallel to the long axis of the mandibular body. B. The longest bucco-lingual dimension of the cystic lesion is measured perpendcular to the long axis of the mandibular body.
제안 방법
Analysis of variance (ANOVA) and Tukey’s post hoc test were used for assessing the KCOT size by comparing several variables such as dental expenses, number of root canal treatments, and number of teeth removed.
Most previous measurements of radiologic KCOT dimensions were performed on periapical and occlusal radiographs, and therefore they were difficult to standardize. Our report presented a series of KCOTs by analyzing data from CT sections and correlating the data to the clinical manifestation, (i.e., preoperative symptoms) and the dental expenses. Previous researchers have assumed that symptomatic KCOTs are larger, more destructive, and more difficult to treat.
The size of each KCOT was measured on the CT slices using the axial plane in millimeters. The measurements were made by using a picture archiving and communication system (PACS) viewer (PiView STAR, Infinitt, Seoul, Korea). On the axial view, the longest mesio-distal and bucco-lingual dimensions were obtained.
The purpose of this study was to present a series of keratocystic odontogenic tumors (KCOTs), analyzing data from CT sections and correlating the data to clinical manifestations and dental expenses.
Using their dental records, the available information was reviewed, which was gender, age at diagnosis, clinical manifestations, site of involvement, radiographic measurement, and treatment modality.
대상 데이터
The radiographs were saved as digital imaging and communications in medicine (DICOM) files. All of the radiographs were evaluated by one radiologist.
Based on these criteria, in the end, 180 patients were included in the present study. Using their dental records, the available information was reviewed, which was gender, age at diagnosis, clinical manifestations, site of involvement, radiographic measurement, and treatment modality.
8 years was similar to the mean age of 37 years in a study by Brannon.9The youngest patient in our study was a 9-year-old girl without symptoms.
성능/효과
An ANOVA test for the dental expense data indicated that larger mandibular KCOT size was correlated with greater dental expenses (Table 7). Another ANOVA test indicated that the bucco-lingual dimension in tooth bearing area but not the mesio-distal dimension in the tooth bearing area increased with an increasing number of teeth removed (Table 8).
The correlation between the number of teeth removed and the dimensions of the lesion in the tooth bearing area was statistically significant in the mandible, whereas in the maxilla, no significant relationship was found. This might be due to the fact that KCOT lesions in the maxilla developed in a complex fashion, involving the maxillary sinus instead of a simple bucco-lingual expansion.
참고문헌 (14)
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