The influence of different soft-tissue grafting procedures at single implant placement on esthetics: A randomized controlled trial

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Abstract

Background: Soft-tissue grafting to thicken the soft tissue around dental implants was proposed to ameliorate the esthetic outcome. Traditionally, connective tissue is used as a grafting material, but a xenogeneic collagen matrix was introduced as an alternative to reduce patient morbidity.

Methods: A total of 60 patients randomly received either no graft (n = 20, NG group), a connective tissue graft (n = 20, CTG group), or a xenogeneic collagen matrix (n = 20, XCM group) when an implant was placed in a preserved alveolar ridge. Changes in mid-buccal mucosal level (MBML) at 1 (T-1) and 12 (T-12) months after final implant crown placement were compared to the pre-extraction level. Additionally, esthetics, marginal bone level, clinical peri-implant parameters, and patient satisfaction were assessed.

Results: At T-12, mean changes in MBML were -0.48 +/- 1.5 mm, -0.04 +/- 1.1 mm, and -0.17 +/- 1.3 mm in the NG, CTG, and XCM groups (P = 0.56), respectively. Regarding the other outcome variables, no significant intergroup differences were observed.

Conclusions: Soft-tissue grafting at single implant placement in preserved alveolar ridges does not result in a better esthetic outcome or in better peri-implant health and should not be considered as a standard procedure.

Original languageEnglish
Pages (from-to)903-914
Number of pages12
JournalJournal of Periodontology
Volume89
Issue number8
Early online date2018
DOIs
Publication statusPublished - Aug-2018

Keywords

  • alveolar ridge augmentation
  • connective tissue
  • esthetics
  • gingival recession
  • single-tooth implants
  • CONTROLLED CLINICAL-TRIAL
  • XENOGENEIC COLLAGEN MATRIX
  • ALVEOLAR RIDGE PRESERVATION
  • GINGIVAL RECESSION DEFECTS
  • CORONALLY ADVANCED FLAP
  • FOLLOW-UP
  • TOOTH EXTRACTION
  • ANTERIOR MAXILLA
  • DENTAL IMPLANTS
  • POST-EXTRACTION

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