- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT01871220
Periimplant Mucosa Dynamics Around Divergent and Concave Atlantis Abutment Transition Profiles
Peri-implant Mucosa Dynamics Around Divergent and Concave Atlantis™ Abutment Transition Profiles.
Studieoversikt
Status
Intervensjon / Behandling
Detaljert beskrivelse
This is a randomized, prospective, controlled clinical trial comparing the facial gingival profiles around Atlantis™ abutments that have either a linear "divergent" or "concave" transitional profile on the facial and proximal aspect of the abutments.
Sixty study subjects requiring replacement of a single-rooted tooth with an implant-supported restoration will be recruited.
The Osseospeed™ Plus implant will be placed for all 60 subjects, with the use of Uni healing abutments to minimize lateral tissue displacement during healing. After implant placement, but before final impressions are obtained (8 weeks post-placement), subjects will be randomized to either a "divergent" or a "concave" transmucosal abutment design. For fabrication of the experimental abutment, Atlantis™ engineers will initially design a control "divergent" prototype that will be modified with a concavity on the facial and proximal transition zones to obtain an abutment that will otherwise retain all the features of the control abutment. Engineers will measure the linear topographical changes (ΔL=Lc-Ld) of the transition zone, as well as the volumetric change (x) on the mid-facial aspect of the abutment induced by the formation of a submucosal concavity. The primary outcome of the study will be the apico-coronal change of the peri-implant mucosal zenith from prosthesis delivery to one year.
Studietype
Registrering (Faktiske)
Fase
- Ikke aktuelt
Kontakter og plasseringer
Studiesteder
-
-
Iowa
-
Iowa City, Iowa, Forente stater, 52242
- University of Iowa College of Dentistry
-
-
Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
Inclusion Criteria:
- 18 years of age or greater
- Subjects requiring replacement of a single-rooted tooth in the maxillary arch from first premolar to first premolar with an implant-supported restoration
- Teeth adjacent (mesial and distal) to study site must consist of two stable, natural teeth without signs of periodontal bone loss (<2.0mm) and/or significant soft tissue loss
- An opposing dentition with teeth, implants, or fixed prosthesis
- Subjects must be willing to follow instructions related to the study procedures
- Subjects must have read, understood, and signed the informed consent document
Exclusion Criteria:
Exclusion Criteria:
- Insufficient interocclusal space for implant placement and/or restoration at study site
- More than 2.0mm vertical bone loss at study site as measured from the mid-buccal crest of the bone on the adjacent teeth
- Untreated rampant caries
- Tobacco use free for ≤ 6 months
- Liver or kidney disfunction/failure
- Active severe infectious diseases that may affect normal healing and/or bone metabolism (e.g. AIDS)
- Uncontrolled diabetes
- Current alcohol or drug abuse
- Need for systemic corticosteroids or any other medication that would influence post-operative healing and/or osseointegration
- History of relevant head/neck cancer and/or radiation of the head/neck
- Subjects who currently use bisphosphonates or have a history of bisphosphonate use
- Subjects with metabolic bone diseases such as osteoporosis or Paget's disease of bone
- Known pregnancy or nursing mothers
- Unable or unwilling to return for follow-up visits for a period of 1 year
- Unlikely to be able to comply with study procedures according to investigators judgement
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Behandling
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
---|---|
Aktiv komparator: Divergent Abutment
Divergent Transition Profile
|
An Atlantis abutment is delivered with a linear transition profile
|
Eksperimentell: Concave Abutment
Concave Transition Profile
|
An Atlantis abutment is delivered with a concave transition profile.
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
---|---|---|
Peri-Implant Mucosal Zenith Distance (in Millimeters) at the Concave/Divergent Abutment Sites
Tidsramme: Delivery, and 1, 3, 6, and 12 months after Atlantis Abutment and Restoration Delivery
|
Determine if there is a difference in soft tissue peri-implant zenith changes (in millimeters) for the concave/divergent abutment sites, specifically between at delivery and 1, 3, 6, and 12 months after Atlantis Abutment and Restoration Delivery.
This measurement is taken using a standardized stereotactic digital photography system that allows for increased measurement accuracy and precision, specifically with the Canfield Dental Camera, Canfield Imaging Systems.
|
Delivery, and 1, 3, 6, and 12 months after Atlantis Abutment and Restoration Delivery
|
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
---|---|---|
Submarginal Buccal-lingual Thickness (Millimeters) in the Peri-implant Transition Zone Relative to a Fixed Reference Point After Prosthesis Delivery
Tidsramme: Baseline and 1, 3, 6, and 12 months after Atlantis Abutment and Restoration Delivery
|
Determine if there is a difference in submarginal buccal-lingual soft tissue thickness in the peri-implant transition zone relative to a fixed reference point, specifically at baseline and 1, 3, 6, and 12 months after Atlantis Abutment and Restoration Delivery.
This measurement is taken using a standardized stereotactic digital photography system that allows for increased measurement accuracy and precision, specifically with the Canfield Dental Camera, Canfield Imaging Systems.
|
Baseline and 1, 3, 6, and 12 months after Atlantis Abutment and Restoration Delivery
|
Keratinized Mucosa Width (Millimeters) at the Midfacial Aspect of the Implant Site.
Tidsramme: Baseline and 1, 3, 6, and 12 months after Atlantis Abutment and Restoration Delivery
|
Determine if there is a difference in Keratinized Mucosa Width (millimeters) in the apico-coronal direction at the midfacial aspect of the implant site, specifically at baseline and 1, 3, 6, and 12 months after Atlantis Abutment and Restoration Delivery.
This measurement is taken using a standardized stereotactic digital photography system that allows for increased measurement accuracy and precision, specifically with the Canfield Dental Camera, Canfield Imaging Systems.
|
Baseline and 1, 3, 6, and 12 months after Atlantis Abutment and Restoration Delivery
|
Samarbeidspartnere og etterforskere
Sponsor
Etterforskere
- Hovedetterforsker: Christopher A Barwacz, DDS, University of Iowa
Studierekorddatoer
Studer hoveddatoer
Studiestart (Faktiske)
Primær fullføring (Faktiske)
Studiet fullført (Faktiske)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Anslag)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Andre studie-ID-numre
- 201302798
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
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