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ID 111932
タイトル別表記
歯科インプラント周囲の骨吸収に関する臨床疫学研究
著者
チメドドラム, ガントゥムール 徳島大学大学院口腔科学教育部(口腔科学専攻)
西川, 啓介 Tokushima University|Tokushima Bunri University KAKEN研究者をさがす
Dalanon, Junhel Tokushima University
Afroz, Shaista Tokushima University
Hayama, Rika Tokushima University
キーワード
dental implant
marginal bone loss
retrospective cohort study
implant design
資料タイプ
学位論文
抄録
Background: During functional loading, the design of the dental implant may have an effect on the response of marginal bone.
Objectives: The purpose of this study was to report the prevalence of peri-implantitis, and to compare radiographic parameters around Brånemark and Replace Select dental implants and evaluate whether disparities in the morphologic features of these two indistinct implant systems, particularly their abutment-implant attachment, had an influence on the health of surrounding tissues and marginal bone loss (MBL).
Materials and Methods: Collection of data was done at the Department of Fixed Prosthodontics, the Department of Maxillo-Facial Prosthodontics, and Oral Implant Center of Tokushima University Hospital, in Tokushima, Japan; between March 2003 and followed until January 2017. Patients who have been treated with the Replace Select internal type implant and the Brånemark variety were selected as cohort. Marginal bone level measurements were evaluated via periapical and panoramic radiographs taken at regular follow-up visit. These dimensions were calculated, starting from the orientation mark at the implant abutment interface to the bottommost perceived contact area of marginal bone with the aforementioned implant system. The change in the level of bone was estimated by calculating the variation involving an initial reference value and the follow-up values.
Results: An average loss of bone at 0.65 ± 1.51 mm (range 0.36 to 7.89 mm) in the Replace Select group was observed, while in the Brånemark group 0.7 ± 1.32 mm (range 0.62 to 8.64 mm) was observed. Spearman rank correlation exhibited a statistically significant positive correlation between progress of bone loss around implant body and interval from implantation in the Brånemark group, whereas in the Replace Select group it was not significant. The Brånemark group exhibited significant (P = 0.0269) negative correlation of MBL and its diameters, whereas the Replace Select group did not exhibit such correlation.
Conclusion: Within the limits of this study, it can be concluded that deviations in the morphologic attributes of these two diverse implant systems had an influence on the health of surrounding tissues and MBL. The Brånemark implants showed a significant increase in MBL (> 1.8mm) as the time of placement elapses. This marked MBL was greater in females than males, in posterior than in anterior, and in the narrow platform implants than the regular platform implants or the wide platform implants. On the other hand, results suggested that this bone loss was greater in the mandible than the maxilla, in single-unit implant crowns than multiple implant restorations in the Replace Select group.
掲載誌名
Journal of Oral Health and Biosciences
ISSN
21896682
出版者
四国歯学会
31
1
開始ページ
13
終了ページ
24
並び順
13
発行日
2018-07-05
備考
内容要旨・審査要旨・論文本文の公開
本論文は,著者Gantumur Chimeddulamの学位論文として提出され,学位審査・授与の対象となっている。
EDB ID
出版社版DOI
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
博士論文全文を含む
文科省報告番号
甲第3195号
学位記番号
甲口第441号
学位授与年月日
2018-05-10
学位名
博士(歯学)
学位授与機関
徳島大学
部局
病院
歯学系