Soft‐tissue dimensional change following guided bone regeneration on peri‐implant defects using soft‐type block or particulate bone substitutes: 1‐year outcomes of a randomized controlled clinical trial

• Published in: Journal of clinical periodontology 2023-02, Vol.50 (2), p.147-157
• Main Authors: Song, Young Woo, Bienz, Stefan P., Benic, Goran I., Cha, Jae‐Kook, Hämmerle, Christoph H. F., Jung, Ui‐Won, Jung, Ronald E.
• Format: Article
• Language: English
• Subjects: Alveolar Ridge Augmentation - methods; Bone biomaterials; Bone growth; Bone Regeneration; Bone Substitutes - therapeutic use; Calcium phosphates; Collagen; Computed tomography; Dehiscence; dental implant; Dental Implantation, Endosseous - methods; Dental Implants; guided bone regeneration; Guided Tissue Regeneration, Periodontal - methods; Humans; intra‐oral scan; Minerals - therapeutic use; Mucosa; randomized controlled clincial trial; Regeneration; Surgery; synthetic bone substitute
• ISSN: 0303-6979; 1600-051X
• DOI: 10.1111/jcpe.13738

Aim To compare the peri‐implant soft‐tissue dimensional changes following guided bone regeneration between particulate (particle group) and collagenated soft‐block‐type (block group) biphasic calcium phosphate (BCP). Materials and Methods This study investigated 35 subjects: 18 in the particle group and 17 in the block group. Cone‐beam computed tomography obtained at 6 months post surgery and optical impressions taken periodically (before surgery, 6 months post surgery, and 1 year post surgery) were superimposed. The ridge contour changes over time and the peri‐implant mucosal thicknesses were measured diagonally and horizontally, and analysed statistically. Results The increases in diagonal (1.12 ± 0.78 mm) and horizontal (2.79 ± 1.90 mm) ridge contour of the block group were significantly higher than those in the particle group during the first 6 months (p