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Non‐interventional 1‐year follow‐up study of peri‐implant soft tissues following previous soft tissue augmentation and crown insertion in single‐tooth gaps
Author(s) -
Huber Samuel,
Zeltner Marco,
Hämmerle Christoph H. F.,
Jung Ronald E.,
Thoma Daniel S.
Publication year - 2018
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/jcpe.12865
Subject(s) - soft tissue , crown (dentistry) , dentistry , abutment , implant , medicine , peri , buccal administration , connective tissue , hard tissue , materials science , orthodontics , surgery , pathology , civil engineering , engineering
Abstract Aim To assess peri‐implant soft tissue dimensions at implant sites, previously augmented with a collagen matrix ( VCMX ) or an autogenous subepithelial connective tissue graft ( SCTG ), between crown insertion and 1 year. Methods Twenty patients with single‐tooth implants received soft tissue augmentation prior to abutment connection randomly using VCMX or SCTG . Following abutment connection 3 months later, final reconstructions were fabricated and inserted (baseline). Patients were recalled at 6 months (6M) and at 1 year ( FU ‐1). Measurements included clinical data, soft tissue thickness, volumetric outcomes and patient‐reported outcome measures ( PROM s). Results The buccal soft tissue thickness showed a median decrease of −0.5 mm (−1.0;0.3) ( VCMX ) and 0.0 mm (−0.5;1.0) ( SCTG ) ( p = .243) up to FU ‐1. The soft tissue volume demonstrated a median decrease between BL and FU ‐1 of −0.1 mm (−0.2;0.0) ( p = .301) for VCMX and a significant decrease of −0.2 mm (−0.4; −0.1) ( p = .002) for SCTG, respectively. Intergroup comparisons did not reveal any significant differences between the groups for peri‐implant soft tissue dimensions and changes up to FU ‐1 ( p > .05). PROM s did not show any significant changes over time nor differences between the groups. Conclusion Between crown insertion and 1 year, the buccal peri‐implant soft tissue dimensions remained stable without relevant differences between sites that had previously been grafted with VCMX or SCTG .