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Raman spectroscopy investigation of human teeth with radiation therapy
Int. J. Oral Maxillofac. Surg. 2013; 42: 1169–1291 available online at http://www.sciencedirect.com
21st ICOMS 2013—Abstracts: Oral Papers T1. Benign lesions of the facial bones
T1.OR002
T1.OR001
The estimate of recurrent rate of ameloblastoma in a teaching hospital of southern taiwan
Raman spectroscopy investigation of human teeth with radiation therapy J.Y. Cai 1,∗ , S.S. Hsueh 2,3 , D.J. Lin 4
K. Chen 1,∗ , S.S. Hsueh 2,3 , C.H. Chen 4 , W.C. Wang 5 , L.M. Lin 5 , Y.K. Chen 5 1
1
Department of Oral-Maxillofacial Surgery, China Medical University Hospital, Taichung, Taiwan 2 Department of Oral Pathology, China Medical University Hospital, Taichung, Taiwan 3 School of Dentistry, China Medical University, Taichung, Taiwan 4 Department of Dental Hygiene, China Medical University, Taichung, Taiwan Background and objectives: Radiation-related caries (radiation caries) is a frequently complication of patients with radiotherapy in the head and neck region. The aim of this study is to investigate the crystallinity of the mineral part of the irradiated teeth by Raman spectroscopy. Methods: Two extracted third molar from patients with/without radiotherapy (total dosage of 65 Gy) were collected. We use a micro-Raman spectroscopy with a spatial resolution of 1 m; the beam was focus on occlusive enamel, bacterial infected enamel, and dentin regions of both radiated and controlled samples. The Knoop¡¦s microhardness were measured on occlusive enamel samples (n = 13) using a Matsuzausa MXT 70 at a load of 500 g for 15 s. Results: The Raman main band positions (in cm−1 ) of enamel are identified as v2 PO43-(432), £h2 PO43-(450, 588, 608), £h1 PO43-(960), £h3 PO43-(1030, 1046, 1071), B type £h1 CO32(1069), and A type £h1 CO32-(1102) which were similar to previous studies. After t-test analysis, we found that there is no significant difference between the mean values of microhardness (KHN) of radiated enamel (247.3¡Ó17.3) and controlled enamel (239.3¡Ó10.5). Conclusions: The micro-Raman spectrums show that the radiation damage may have an effect on the crystal integrity of the enamel and dentine. http://dx.doi.org/10.1016/j.ijom.2013.07.008
Department of Oral-Maxillofacial Surgery, Taichung China Medical University Hospital, Taichung, Taiwan 2 Department of Oral Pathology, China Medical University Hospital, Taichung, Taiwan 3 School of Dentistry, China Medical University, Taichung, Taiwan 4 Departments of Oral & Maxillofacial Surgery, School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan 5 Departments of Oral Pathology School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan Ameloblastoma is a benign neoplasm derived from residual epithelial components of tooth development. Ameloblastomas have a high recurrence rate if they are not widely and carefully excised. Not all lesions with histologic features of ameloblastoma have the same potential for destruction, recurrence, and even metastasis. For management purposes, not all ameloblastomas require the same surgical treatment; however, a correlation of the clinical, radiographic, and histologic features of each individually encountered lesion is required to determined the clinical subtype. The aim of this study is to estimate the rate as well as the duration for recurrence of a group patient with ameloblastoma in a teaching hospital of southern Taiwan. Methods: A total of patients (72 male; 41 female) between the first of January, 1991 and the end of December, 2005 with histopathological diagnosis of ameloblastoma were included in the present study. Results: The average age of initial surgical treatment, as well as entry into the study, was 36.31 years (range 83–8 years). There is not significant difference between sex in occurrence of ameloblastoma (p = 0.0633). There is significant difference between operation in occurrence of ameloblastoma (p = 0.0004), histological diagnosis (p = 0.0458) and location (p = 0.0009). http://dx.doi.org/10.1016/j.ijom.2013.07.009
0901-5027/01001169+0123 $36.00/0
21st ICOMS 2013—Abstracts: Oral Papers T1. Benign lesions of the facial bones
T1.OR002
T1.OR001
The estimate of recurrent rate of ameloblastoma in a teaching hospital of southern taiwan
Raman spectroscopy investigation of human teeth with radiation therapy J.Y. Cai 1,∗ , S.S. Hsueh 2,3 , D.J. Lin 4
K. Chen 1,∗ , S.S. Hsueh 2,3 , C.H. Chen 4 , W.C. Wang 5 , L.M. Lin 5 , Y.K. Chen 5 1
1
Department of Oral-Maxillofacial Surgery, China Medical University Hospital, Taichung, Taiwan 2 Department of Oral Pathology, China Medical University Hospital, Taichung, Taiwan 3 School of Dentistry, China Medical University, Taichung, Taiwan 4 Department of Dental Hygiene, China Medical University, Taichung, Taiwan Background and objectives: Radiation-related caries (radiation caries) is a frequently complication of patients with radiotherapy in the head and neck region. The aim of this study is to investigate the crystallinity of the mineral part of the irradiated teeth by Raman spectroscopy. Methods: Two extracted third molar from patients with/without radiotherapy (total dosage of 65 Gy) were collected. We use a micro-Raman spectroscopy with a spatial resolution of 1 m; the beam was focus on occlusive enamel, bacterial infected enamel, and dentin regions of both radiated and controlled samples. The Knoop¡¦s microhardness were measured on occlusive enamel samples (n = 13) using a Matsuzausa MXT 70 at a load of 500 g for 15 s. Results: The Raman main band positions (in cm−1 ) of enamel are identified as v2 PO43-(432), £h2 PO43-(450, 588, 608), £h1 PO43-(960), £h3 PO43-(1030, 1046, 1071), B type £h1 CO32(1069), and A type £h1 CO32-(1102) which were similar to previous studies. After t-test analysis, we found that there is no significant difference between the mean values of microhardness (KHN) of radiated enamel (247.3¡Ó17.3) and controlled enamel (239.3¡Ó10.5). Conclusions: The micro-Raman spectrums show that the radiation damage may have an effect on the crystal integrity of the enamel and dentine. http://dx.doi.org/10.1016/j.ijom.2013.07.008
Department of Oral-Maxillofacial Surgery, Taichung China Medical University Hospital, Taichung, Taiwan 2 Department of Oral Pathology, China Medical University Hospital, Taichung, Taiwan 3 School of Dentistry, China Medical University, Taichung, Taiwan 4 Departments of Oral & Maxillofacial Surgery, School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan 5 Departments of Oral Pathology School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan Ameloblastoma is a benign neoplasm derived from residual epithelial components of tooth development. Ameloblastomas have a high recurrence rate if they are not widely and carefully excised. Not all lesions with histologic features of ameloblastoma have the same potential for destruction, recurrence, and even metastasis. For management purposes, not all ameloblastomas require the same surgical treatment; however, a correlation of the clinical, radiographic, and histologic features of each individually encountered lesion is required to determined the clinical subtype. The aim of this study is to estimate the rate as well as the duration for recurrence of a group patient with ameloblastoma in a teaching hospital of southern Taiwan. Methods: A total of patients (72 male; 41 female) between the first of January, 1991 and the end of December, 2005 with histopathological diagnosis of ameloblastoma were included in the present study. Results: The average age of initial surgical treatment, as well as entry into the study, was 36.31 years (range 83–8 years). There is not significant difference between sex in occurrence of ameloblastoma (p = 0.0633). There is significant difference between operation in occurrence of ameloblastoma (p = 0.0004), histological diagnosis (p = 0.0458) and location (p = 0.0009). http://dx.doi.org/10.1016/j.ijom.2013.07.009
0901-5027/01001169+0123 $36.00/0