Abstract
The advantages of immediate implant placement for patients include a reduced number
of surgical procedures and a shorter overall treatment time. Disadvantages include
a higher risk of aesthetic complications. The aim of this study was to compare xenogeneic
collagen matrix (XCM) versus a subepithelial connective tissue graft (SCTG) used for
soft tissue augmentation in combination with immediate implant placement without provisionalization.
Forty-eight patients requiring a single implant-supported rehabilitation were selected
and assigned to one of two surgical procedures: immediate implant with SCTG (SCTG
group) or immediate implant with XCM (XCM group). Marginal changes in the peri-implant
soft tissue and the facial soft tissue thickness (FSTT) were assessed after 12 months.
Secondary outcomes included peri-implant health status, aesthetics, patient satisfaction,
and perceived pain. All of the implants placed were successfully osseointegrated,
resulting in 1-year survival and success rates of 100%. The patients in the SCTG group
had a significantly lower mid-buccal marginal level (MBML) recession (P = 0.021) and a greater increase in FSTT (P < 0.001) than the patients in the XCM group. Using xenogeneic collagen matrix during
immediate implant placement significantly increased FSTT from the baseline, leading
to good aesthetic and patient satisfaction results. However, the connective tissue
graft yielded better MBML and FSTT results.
Keywords
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Article info
Publication history
Published online: February 18, 2023
Accepted:
January 27,
2023
Publication stage
In Press Corrected ProofIdentification
Copyright
© 2023 International Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.
