The study aims to evaluate the efficacy of ridge preservation with collagen sponge or collagen membrane in combination with collagenated bovine bone mineral in extraction sockets of periodontally diseased teeth.
Age ≥ 18 years
Need for molar extraction due to periodontal disease and plan for late implantation
No acute infection, such as abscess or effusion
Presence of bone defects on at one or two socket walls, where the height of the horizontal (suprabony) component of the defect (alveolar bone crest - cement-enamel junction) is >50% of the corresponding root length and the bone height of socket walls is at least 3 mm
Smoking
Pregnancy or lactation
Untreated periodontal disease
Severe systemic conditions that contraindicate surgery (such as diabetes, heart disease, cancer etc.)
Parallel
alveolar ridge preservation
Procedure/SurgeryAlveolar ridge preservation and augmentation commonly are performed immediately after tooth extraction to preserve or increase ridge volume within or beyond the skeletal envelope that exists at the time of extraction.
change from baseline horizontal width of ridge at 6 months
horizontal width of ridge at 1, 3, 5mm below crest
change from baseline vertical height of ridge at 6 months
vertical height of ridge at the buccal and palatal/lingual plates
width of keratinized tissue
measured from the MGJ to the mucosa margin at the mid-buccal aspect using a periodontal probe
thickness of mucosa
measured at the mid-buccal aspect using an endodontic file with a rubber stop
postoperative pain
using a visual analog scale (VAS) ranging from 0 to 10 (0 = no pain and 10 = worst pain imaginable)
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