著者

新垣 理宣 勝良 剛詞 小林 大二郎 道 泰之 北本 佳住 依田 哲也 倉林 亨

出版者

特定非営利活動法人 日本歯科放射線学会

雑誌

歯科放射線 (ISSN:03899705)

巻号頁・発行日

vol.61, no.2, pp.53-57, 2022 (Released:2022-04-06)

参考文献数

14

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Introduction: Radiation-induced dental caries is a late oral adverse event that should be considered after head and neck radiotherapy. However, there are no clinical guidelines for dental management after head and neck radiotherapy. We report a case of multiple dental caries that developed after head and neck radiotherapy in a patient in whom symptomatic treatment was challenging. Case: A 67-year-old male was referred to our department with difficulty with oral intake secondary to occlusal insufficiency. He had a history of radiotherapy for hypopharyngeal carcinoma, and nearly all of his teeth only had residual roots. We found multiple carious teeth, including in areas outside of the radiation field. We designed a temporary denture in coordination with a dental office; however, it was difficult to extract all of the patient’s teeth. The patient was followed-up; however, he died of esophageal cancer. Conclusion: Radiation-induced dental caries can even occur in teeth outside of the radiation field. In such cases, continuous preventative measures, such as oral care, are important, even before the start of radiotherapy.

著者

草間 幹夫 岸 豊子 星 健太郎 名取 恵子 松本 玲子 生田 稔 亀卦川 昭宗 酒井 英紀 榎本 昭二 倉林 亨

出版者

Japan Society for Head and Neck Cancer

雑誌

頭頸部腫瘍 (ISSN:09114335)

巻号頁・発行日

vol.23, no.3, pp.631-636, 1997-11-30 (Released:2010-04-30)

参考文献数

19

被引用文献数

3 3

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下顎歯肉癌に対する手術は, 従来より区域切除を主体として行われ, 良好な治療成績が得られているが, それを基本としつつ患者のQOLを考慮し辺縁切除の適応の拡大に努めてきたので報告した。下顎骨吸収深度 Grade2 (骨体部, 下顎管上の骨吸収) で, 骨吸収様式が平滑型 (Pressure type) の症例までは下顎辺縁切除が可能であった。腫瘍の軟組織進展範囲別では頬側進展型に原発巣再発の頻度が高く, 区域切除の適応が多かったが, 下顎歯肉癌全体で術前治療後の縮小手術は14.9%に行われた。画像診断特に Dental CTにより, 下顎下縁の保存に関する判断が容易となった。

著者

誉田 栄一 倉林 亨 吉田 みどり

出版者

特定非営利活動法人 日本歯科放射線学会

雑誌

歯科放射線 (ISSN:03899705)

巻号頁・発行日

vol.57, no.1, pp.1-9, 2017 (Released:2017-09-29)

参考文献数

16

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MRI is a method which locates NMR(nuclear magnetic resonance)signal and creates an image. The method of the positioning is different from that of CT imaging.Transmission and receive coils are used for handling electromagnetic wave in MRI. And 3-dimensionally independent three coils for application of gradient are equipped. One of the three coils is for slice selection of a patient, and the rest 2 coils are for locating signal on the 2-dimensional slice. This review explains the principle of image formation in MRI.

著者

宗像 源博 塩田 真 誉田 栄一 立川 敬子 春日井 昇平 倉林 亨

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 (ISSN:09146695)

巻号頁・発行日

vol.17, no.2, pp.196-201, 2004-06-30 (Released:2015-02-10)

参考文献数

19

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Evaluation of jawbone quality is very important for successful implant treatment; however, a method to evaluate bone quality of the jaw has not been established. Furthermore, at present, bone classifications are relatively rough and subjective methods for pre-operative assessment. This study compared the buccal and the lingual cortical bone mineral densities (BMD), and correlation trabecular BNID and cortical BMD by quantitative computed tomography (QCT). The subjects were 56 patients with mandibular distal extension defect (20 males, 17 pre-menopausal and 19 post-menopausal women;age range 30 to 79 years). The buccal and lingual cortical BMD and the trabecular BMD were measured by QCT. The difference and the correlation among the three groups were estimated. The results were as follows. 1. The buccal cortical BMD was significantly higher than the lingual cortical BMD in the male and pre-menopausal group. However, no significant difference was seen between the buccal and the lingual cortical BMD in the post-menopausal group. 2. The buccal cortical BMD correlated well with the trabecular BMD in the male group. 3. The buccal and the lingual cortical BMD did not correlate with the trabecular BMD in the pre-menopausal group. 4. The buccal cortical BMD correlated significantly with the trabecular BMD in the post-menopausal group. In conclusion, it is important to consider these tendencies of mandibular BMD in dental implant treatment.