Study Comparing OsseoSpeed™ Implants of Two Different Lengths in the Upper and Lower Posterior Jaw
An Open, Prospective, Randomized, Multi-center Study Comparing OsseoSpeed™ Implant 6 mm With OsseoSpeed™ Implant 11 mm in the Posterior Maxilla and Mandible. A 5-year Follow-up Study.
調査の概要
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
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California
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Los Angeles、California、アメリカ、90089-0641
- USC School of Dentistry
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Iowa
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Iowa City、Iowa、アメリカ、52242-1010
- The University of Iowa, College of Dentistry
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London、イギリス、SE1 9RT
- King's College London Dental Institute at Guy's King's and St Thomas' Hospitals
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Apeldoorn、オランダ、7315
- Praktijk De Mondhoek
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Victoria
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Melbourne、Victoria、オーストラリア、3010
- School of Dental Science, University of Melbourne
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Göteborg、スウェーデン、SE 405 30
- Dept. of Parodontology, Göteborg University
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Provision of informed consent
- Aged 20-70 years at enrolment
- History of edentulism in the study area of at least four months
- Neighboring tooth/teeth to the planned bridge must have natural root(s)
- Presence of natural teeth, partial prosthesis and/or implants in the opposite jaw in contact with the planned bridge.
- Deemed by the investigator to have a bone height of at least 11 mm and a bone width of minimum 6 mm
- Deemed by the investigator as likely to present an initially stable implant situation
Exclusion Criteria:
- Unlikely to be able to comply with study procedures, as judged by the investigator
- Earlier graft procedures in the study area
- Uncontrolled pathologic processes in the oral cavity
- Known or suspected current malignancy
- History of radiation therapy in the head and neck region
- History of chemotherapy within 5 years prior to surgery
- Systemic or local disease or condition that could compromise post-operative healing and/or osseointegration
- Uncontrolled diabetes mellitus
- Corticosteroids or any other medication that could influence post-operative healing and/or osseointegration
- Smoking more than 10 cigarettes/day
- Present alcohol and/or drug abuse
- Involvement in the planning and conduct of the study (applies to both Astra Tech staff and staff at the study site)
- Previous enrolment in the present study.
- Severe non-compliance to protocol as judged by the investigator and/or Astra Tech
- Simultaneous participation in another clinical study, or participation in a clinical study during the last 6 months
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:なし(オープンラベル)
武器と介入
参加者グループ / アーム |
介入・治療 |
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実験的:Group-1, Implant length 6 mm
Subjects treated with OsseoSpeed™ implant, length: 6 mm
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OsseoSpeed™ dental implant, length: 6 mm
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他の:Group-2, Implant length 11 mm
Subjects treated with OsseoSpeed™ implant, length: 11 mm
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OsseoSpeed™ dental implant, length: 11 mm
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この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
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Radiological Assessments of Marginal Bone Level Alteration
時間枠:Evaluated from implant installation to 5 years follow-up after implant placement
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Marginal Bone Level determined from radiographs and expressed as the difference from a reference point on the implant to the most coronal bone-to-implant contact on the mesial and distal aspect of the implant. Marginal Bone Level expressed in millimeters at the 5 year follow-up visit compared to values obtained at delivery of temporary restoration i.e. loading (baseline). Positive value = bone gain, Negative value = bone loss. |
Evaluated from implant installation to 5 years follow-up after implant placement
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
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Overall Implant Survival
時間枠:Evaluated 5 years after implant placement
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Overall implant survival, measured on implant level
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Evaluated 5 years after implant placement
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Evaluation of the Periimplant Mucosa Condition - By Assessment BoP
時間枠:Measured at the 5-year follow-up visit after loading
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Condition of the periimplant mucosa by assessment of Bleeding on Probing (BoP).
Presented as s count of implants that show presence of BoP.
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Measured at the 5-year follow-up visit after loading
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Evaluation of the Periimplant Mucosa Condition - By Assessment of Change in PPD
時間枠:Evaluated at implant loading and at the 5-year follow-up visit.
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Condition of the periimplant mucosa by assessment of change in probing pocket depth (PPD). Change in pocket depth expressed in millimeters at the 5-year follow-up visit, compared to values obtained at delivery of permanent restoration, i.e. loading (baseline). Negative value = increased pocket depth. |
Evaluated at implant loading and at the 5-year follow-up visit.
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Presence of Plaque
時間枠:Evaluated at the 5-year follow-up visit after loading.
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Presence of plaque was evaluated at four surfaces around each study position (mesial, facial, distal and lingual). Plaque was recorded as presence or absence of plaque by visual inspection. A study position was considered as bleeding "yes" if at least one of the four surfaces around the implant showed presence of bleeding on probing. |
Evaluated at the 5-year follow-up visit after loading.
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協力者と研究者
捜査官
- スタディディレクター:Anna-Karin Lundgren、Direktor Clinical Research, Dentsply Sirona Implants, Mölndal, SWEDEN
出版物と役立つリンク
一般刊行物
- Gulje F, Abrahamsson I, Chen S, Stanford C, Zadeh H, Palmer R. Implants of 6 mm vs. 11 mm lengths in the posterior maxilla and mandible: a 1-year multicenter randomized controlled trial. Clin Oral Implants Res. 2013 Dec;24(12):1325-31. doi: 10.1111/clr.12001. Epub 2012 Sep 3.
- Zadeh HH, Gulje F, Palmer PJ, Abrahamsson I, Chen S, Mahallati R, Stanford CM. Marginal bone level and survival of short and standard-length implants after 3 years: An Open Multi-Center Randomized Controlled Clinical Trial. Clin Oral Implants Res. 2018 Aug;29(8):894-906. doi: 10.1111/clr.13341. Epub 2018 Jul 12.
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。
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