Impact of mucosal phenotype on marginal bone levels around tissue level implants: A prospective controlled trial

Carlos Garaicoa-Pazmino, Gustavo Mendonça, Alice Ou, Hsun Liang Chan, James Mailoa, Fernando Suárez-López Del Amo, Hom Lay Wang

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Background: The aim of this 1-year prospective clinical trial was to compare clinical parameters and marginal bone levels (MBLs) around tissue level implants with a partially smooth collar between patients with thin (≤2 mm) and thick (>2 mm) vertical mucosal phenotypes. Methods: Thirty patients needing a single dental implant were recruited and allocated to thin (n = 14) or thick (n = 16) phenotype groups. Post-restoration, clinical (probing depth, recession, width of keratinized mucosa, bleeding on probing, suppuration, implant mobility, plaque index, and gingival index) and radiographic bone level measurements were recorded at different timepoints for 1 year. Results: Twenty-six patients (13 per group) completed the 1-year examination. No implants were lost (100% survival rate). There were no significant differences (P >0.05) between thin and thick vertical mucosal phenotypes for any clinical parameter or for the radiographic MBL. Conclusions: Tissue level implants at 1 year of function placed in thin vertical mucosa achieved similar clinical parameters and radiographic MBLs as those in thick tissue. The formation of the peri-implant supracrestal tissue height plays a key role in MBL than mucosal thickness in tissue level implant.

Original languageEnglish (US)
Pages (from-to)771-783
Number of pages13
JournalJournal of periodontology
Issue number6
StatePublished - Jun 2021


  • alveolar bone loss
  • dental implant
  • peri-implant endosseous healing
  • phenotype
  • soft tissue therapy

ASJC Scopus subject areas

  • Periodontics


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