Study on OsseoSpeed™ Implants Replacing 2-5 Teeth in the Posterior Upper Jaw, Restored With Provisional Teeth Attached 6-7 Weeks Later
An Open, Prospective Study to Evaluate Implant Stability, Marginal Bone Adaptation and the Survival Rate of Astra Tech Dental Implant System, Fixture Osseospeed™, in Patients With Tooth Loss in the Posterior Maxilla in an Early Loading Protocol.
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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Iowa
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Iowa City, Iowa, Forenede Stater, 52242-1010
- University of Iowa, College of Dentistry, Dow's Institute for Dental Research
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Texas
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San Antonio, Texas, Forenede Stater, 78229
- UTHSCSA
-
-
-
-
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Mainz, Tyskland, D-551 31
- Universitetsklinik Mainz, Klinik fur ZMK
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Provision of written informed consent
- 18 years of age and over
- Edentulous in the posterior maxilla, Kennedy classes I or II. Last natural tooth, or previously restored implant in function is canine or first bicuspid.
- Deemed by the investigator as likely to present an initially stabile implant situation suitable for early loading
Exclusion Criteria:
- Untreated caries and/or periodontal disease of residual dentition
- History of edentulism in the area of implant placement of less than two months
- Current need for pre-surgical bone or soft tissue augmentation in the planned implant area.
- History of pre-surgical bone or soft tissue augmentation, within12 months, in the planned implant area.
- Sinus floor thickness of less than 5 mm, verified by periapical radiographs.
- Any systemic or local disease or condition that would compromise post-operative healing and/or osseointegration
- Need for systemic corticosteroids or any other medication that would compromise post-operative healing and/or osseointegration
- Present alcohol or drug abuse
- Unable or unwilling to return for follow-up visits for a period of 5 years
- Current use of smoking tobacco
- Pregnancy or lactation at the time of enrollment
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Ikke-randomiseret
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: EN
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OsseoSpeed™, alle dimensioner
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Implant Survival Rate
Tidsramme: At 5 year follow-up
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An implant that has failed to osseointegrate, lost its osseointegration or fractured was considered a failure effective from the date of removal.
The survival rate for individual implants was analyzed at each visit.
Cumulative implant survival rate was calculated using Kaplan-Meier life-table estimation and reported as percentage of survived implants.
|
At 5 year follow-up
|
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Implant Stability
Tidsramme: At 1 year follow-up
|
Implant stability was evaluated using Resonance Frequency Analysis (RFA).
The RFA value was automatically translated into an Implant Stability Quotient index (ISQ), which runs from 1 to 100.
The ISQ value indicates the level of stability.
Low values (<60) indicate low stability, medium values (60-70) indicate medium stability and high values (>70) indicate high stability.
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At 1 year follow-up
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Marginal Bone Adaptation
Tidsramme: At baseline (loading) and at 5 year follow-up
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Marginal bone adaptation was expressed as the distance from the implant reference point to the most coronal bone-to-implant contact on the mesial and distal side of the implant.
Bone adaptation in millimeters at follow-up visit were compared to values obtained Baseline (loading).
Positive value indicates bone gain and negative value bone loss.
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At baseline (loading) and at 5 year follow-up
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: James T Mellonig, D.D.S., M.S, University of Texas
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- YA-OSS-0001
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