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Autogenous Bone Block versus Collagenated Xenogeneic Bone Block to evaluate treatment concept for reconstruction of atrophic alveolar ridge: a non-inferiority randomized clinical trial

Randomized controlled clinical trial to evaluate the concept of treatment for atrophied alveolar ridge reconstruction using Collaged Xenogenic Bone Block (CXBB) versus Autogenous Bone Block (ABB) treatment

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-3vn9c5q
Enrollment
Unknown
Registered
2021-09-16
Start date
2017-08-15
Completion date
Unknown
Last updated
2025-10-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Tooth Loss

Interventions

- Number of study participants: Control Group - 32 Participants. Test Group - 32 Participants. Total Participants = 64 Participants. - Surgery at the donor site (Only for Control Group participants):
the length of these cuts determined the height of the harvested graft. A third cut was made with a drill on the anterior face of the branch, parallel to the external oblique line, to connect the other
T84.3
Z96.5

Sponsors

Faculdade de Odontologia da Universidade de São Paulo
Lead Sponsor
Geistlich Pharma AG
Collaborator

Eligibility

Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: Written informed consent; Age 18 years or older; Partial edentulism (up to 4 missing adjacent teeth); Atrophied alveolar ridge with one or more adjacent missing teeth; Atrophied alveolar ridge with residual ridge width of = 4 mm; Sufficient bone height at the surgical site for implant placement

Exclusion criteria

Exclusion criteria: General contraindications for dental and/or surgical treatments; Periodontitis or Peri-implantitis; Probing depth > 4mm at the adjacent teeth; Inadequate oral hygiene (PI>1); Knife-edge morphology of the alveolar ridge; Implants adjacent to the surgical site; Inflammatory disease of oral cavity; Immunological impairment; Allergy to collagen; Diabetes; History of myeloma, respiratory tract cancer, breast cancer, prostate cancer or kidney cancer requiring chemotherapy or radiotherapy within the past five years; Previous, concurrent or planned radiotherapy of head area; Concurrent or previous immunosuppressant, bisphosphonate, high-dose or long-term corticosteroid therapy; Smokers or subjects who did not quit smoking at least 3 months prior to the surgery; Pregnant or lactating women; Women of childbearing age, who are not using a highly effective method of birth control; Participation in an investigational device, drug or biologics study within the last 26 weeks prior to the study start; Participation in any other clinical investigation during the study

Design outcomes

Primary

MeasureTime frame
The primary outcome was the clinical gain in the width of the ridge 2 mm below the alveolar ridge in 30 weeks after the increase in the horizontal ridge. The ridge width gain (mm) was defined as the ridge width measured at implant placement minus the ridge width measured at the baseline before the bone graft.;Possibility to place an implant after graft surgery.

Secondary

MeasureTime frame
-Early implant failures.;-Need for additional guided bone regeneration in implant placement, assessed through the presence of thin bone remaining in the bone walls surrounding the implant, according to the operator's criteria. ;Postoperative complications, assessed during the postoperative period, through photos, clinical measures in the control consultations and patient reports. ;-Surgery time, measured by the time that was measured in minutes using a timed clock. ;-Patient-centered outcomes, such as pain and, quantity of analgesics, quality related to oral health of life (OHIP-14) and satisfaction with the result of the treatment were, measured through specific questionnaires.

Countries

Brazil

Contacts

Public ContactGiuseppe Romito
garomito@usp.br+55 11 3091-7833

Outcome results

None listed

Source: REBEC (via WHO ICTRP)