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Updated: Dec 3, 2025
An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
Impact of mucosal phenotype on marginal bone levels around tissue level implants: A prospective controlled trial
Carlos Garaicoa-Pazmino1,2, Gustavo Mendonça3, Alice Ou3
1Department of Periodontology, School of Dentistry, Oregon Health & Science University, Portland, OR, USA.
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.
