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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.

The purpose of this study is to see if OsseoSpeed™ implant 6 mm long is effective for rehabilitation of edentulism and if so, how it compares with OsseoSpeed™ implant 11 mm long. The primary hypothesis is that the alteration in bone level is equal in patients randomized to 6 mm as to patients randomized to 11 mm implants.

Studieoversikt

Studietype

Intervensjonell

Registrering (Faktiske)

97

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

    • Victoria
      • Melbourne, Victoria, Australia, 3010
        • School of Dental Science, University of Melbourne
    • California
      • Los Angeles, California, Forente stater, 90089-0641
        • USC School of Dentistry
    • Iowa
      • Iowa City, Iowa, Forente stater, 52242-1010
        • The University of Iowa, College of Dentistry
      • Apeldoorn, Nederland, 7315
        • Praktijk De Mondhoek
      • London, Storbritannia, SE1 9RT
        • King's College London Dental Institute at Guy's King's and St Thomas' Hospitals
      • Göteborg, Sverige, SE 405 30
        • Dept. of Parodontology, Göteborg University

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

20 år til 70 år (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

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

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Group-1, Implant length 6 mm
Subjects treated with OsseoSpeed™ implant, length: 6 mm
OsseoSpeed™ dental implant, length: 6 mm
Annen: Group-2, Implant length 11 mm
Subjects treated with OsseoSpeed™ implant, length: 11 mm
OsseoSpeed™ dental implant, length: 11 mm

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Radiological Assessments of Marginal Bone Level Alteration
Tidsramme: Evaluated from implant installation to 5 years follow-up after implant placement

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

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Overall Implant Survival
Tidsramme: Evaluated 5 years after implant placement
Overall implant survival, measured on implant level
Evaluated 5 years after implant placement
Evaluation of the Periimplant Mucosa Condition - By Assessment BoP
Tidsramme: Measured at the 5-year follow-up visit after loading
Condition of the periimplant mucosa by assessment of Bleeding on Probing (BoP). Presented as s count of implants that show presence of BoP.
Measured at the 5-year follow-up visit after loading
Evaluation of the Periimplant Mucosa Condition - By Assessment of Change in PPD
Tidsramme: Evaluated at implant loading and at the 5-year follow-up visit.

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.
Presence of Plaque
Tidsramme: Evaluated at the 5-year follow-up visit after loading.

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.

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Etterforskere

  • Studieleder: Anna-Karin Lundgren, Direktor Clinical Research, Dentsply Sirona Implants, Mölndal, SWEDEN

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart

1. november 2007

Primær fullføring (Faktiske)

1. mai 2016

Studiet fullført (Faktiske)

1. mai 2016

Datoer for studieregistrering

Først innsendt

16. oktober 2007

Først innsendt som oppfylte QC-kriteriene

16. oktober 2007

Først lagt ut (Anslag)

17. oktober 2007

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

19. mai 2020

Siste oppdatering sendt inn som oppfylte QC-kriteriene

7. mai 2020

Sist bekreftet

1. mai 2020

Mer informasjon

Begreper knyttet til denne studien

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

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