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- Title
Randomized controlled clinical trial comparing guided bone regeneration of peri‐implant defects with soft‐type block versus particulate bone substitutes: Six‐month results of hard‐tissue changes.
- Authors
Benic, Goran I.; Bienz, Stefan P.; Song, Young Woo; Cha, Jae‐Kook; Hämmerle, Christoph H. F.; Jung, Ui‐Won; Jung, Ronald E.
- Abstract
Aim: To test whether soft‐type block bone substitute used for guided bone regeneration (GBR) of peri‐implant defects leads to a different dimension of the augmented hard tissue than particulate bone substitute. Materials and Methods: In 40 patients, 40 two‐piece dental implants were placed >2 months after tooth extraction. Following random allocation, 20 peri‐implant bone dehiscences were grafted with a soft‐type block made of synthetic biphasic calcium phosphate (BCP) + collagen and 20 bone dehiscences with particulate BCP. All the sites were covered with a collagen membrane stabilized with titanium pins. Immediately after wound closure and after 6 months, the horizontal dimension (HD) of the augmented hard tissue was measured at the level of implant shoulder using cone beam computed tomography. During re‐entry at 6 months, the defect fill was clinically assessed. Results: At 6 months, the median HD measured 1.15 mm (mean: 1.31 mm) in the soft‐block group and 0.93 mm (mean: 1.05 mm) in the particulate group (p =.6). At 6 months, 7.1% of contained defects and 61.9% of non‐contained defects showed an incomplete vertical defect fill. Conclusions: Soft‐type block of BCP + collagen used for GBR of peri‐implant defects did not differ from particulate BCP regarding the dimension of the augmented hard tissue after 6 months of healing.
- Subjects
DENTAL implants; ALVEOLAR process; RANDOMIZED controlled trials; DESCRIPTIVE statistics; BONE regeneration; STATISTICAL sampling; COMPUTED tomography
- Publication
Journal of Clinical Periodontology, 2022, Vol 49, Issue 5, p480
- ISSN
0303-6979
- Publication type
Article
- DOI
10.1111/jcpe.13606