Radiographic evaluation of different techniques for ridge preservation after tooth extraction: a randomized controlled clinical trial

• Published in: Journal of clinical periodontology 2013-01, Vol.40 (1), p.90-98
• Main Authors: Jung, Ronald E., Philipp, Alexander, Annen, Beat M., Signorelli, Luca, Thoma, Daniel S., Hämmerle, Christoph H.F., Attin, Thomas, Schmidlin, Patrick
• Format: Article
• Language: English
• Subjects: Adult; Aged; Alveolar Bone Loss - diagnostic imaging; Alveolar Bone Loss - etiology; Alveolar Bone Loss - prevention & control; Analysis of Variance; Biological and medical sciences; Bone Matrix - transplantation; bone regeneration; bone substitute; Bone Substitutes; Calcium Phosphates - therapeutic use; Clinical outcomes; Coated Materials, Biocompatible - therapeutic use; Collagen - therapeutic use; Cone-Beam Computed Tomography; cone-beam CT; Dentistry; Facial bones, jaws, teeth, parodontium: diseases, semeiology; Female; graft material; human; Humans; Lactic Acid; Male; Medical sciences; Middle Aged; Minerals; Non tumoral diseases; Otorhinolaryngology. Stomatology; Polyglycolic Acid; Prospective Studies; Radiography; RCT; socket preservation; Statistics, Nonparametric; Teeth; Tooth Extraction - adverse effects
• ISSN: 0303-6979; 1600-051X
• DOI: 10.1111/jcpe.12027

Objective To evaluate the radiographic changes of the alveolar ridge following application of different ridge preservation techniques 6 months after tooth extraction. Materials and Methods Four treatment modalities were randomly assigned in 40 patients: β‐tricalcium‐phosphate‐particles with polylactid coating (β‐TCP), demineralized bovine bone mineral with 10% collagen covered with a collagen matrix (DBBM‐C/CM), DBBM‐C covered with an autogenous soft‐tissue graft (DBBM‐C/PG) and spontaneous healing (control). Cone‐beam computed tomography scans were performed after treatment and 6 months later. Results After 6 months, the vertical changes ranged between −0.6 mm (−10.2%) for control and a gain of 0.3 mm (5.6%) for DBBM‐C/PG on the lingual side, and between −2.0 mm (−20.9%) for β‐TCP and a gain of 1.2 mm (8.1%) for DBBM‐C/PG on the buccal side. The most accentuated ridge width changes were recorded 1 mm below the crest: −3.3 mm (−43.3%, C), −6.1 mm (−77.5%, β‐TCP), −1.2 mm (−17.4%, DBBM‐C/CM) and −1.4 mm (−18.1%, DBBM‐C/PG). At all three levels, DBBM‐C with either CM or PG was not significantly differing (p > 0.05), while most other differences between the groups reached statistical significance (p