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Table 3 Multiple logistic regression analysis for the association between peri-implant clinical parameters and the absence of keratinized mucosa

From: The lack of keratinized mucosa is associated with poor peri-implant tissue health: a cross-sectional study

Independent variablesNPresence of plaqueRecession > 1 mmBone level > 3 mm
Crude OR (95% CI)Adjusted OR (95% CI)Crude OR (95% CI)Adjusted OR (95% CI)Crude OR (95% CI)Adjusted OR (95% CI)
Keratinized mucosa
Absence of K322.18*2.98*3.33*3.20*4.54*4.62*
Presence of KM380(1.02-4.65)(1.33-6.66)(1.16-9.58)(1.03-9.90)(1.86-11.09)(1.70-12.58)
Oral hygiene status
Poor (mPI>2)221.291.390.730.901.120.68
Good to fair(mPI< 2)390(0.49-3.39)(0.47-4.08)(0.09-5.63)(0.10-7.90)(0.25-5.00)(0.13-3.59)
Smoking habit
Smoker471.902.010.310.301.381.12
Nonsmoker365(0.99-3.65)(0.99-4.03)(0.04-2.34)(0.04-2.35)(0.51-3.76)(0.38-3.33)
Diabetes mellitus
Diabetes311.681.721.071.131.731.56
No diabetes381(0.76-3.71)(0.75-3.93)(0.24-4.78)(0.25-5.20)(0.57-5.28)(0.48-5.12)
History of periodontitis
Yes1740.910.701.281.322.73*2.45*
No238(0.57-1.45)(0.42-1.17)(0.57-2.88)(0.57-3.10)(1.31-5.67)(1.11-5.41)
Type of restoration
Cement retained3021.80*1.85*0.860.810.570.46
Screw retained110(1.10-2.96)(1.10-3.11)(0.33-2.21)(0.31-2.16)(0.23-1.40)(0.17-1.21)
Location of implant
Posterior region3310.960.760.760.671.460.99
Anterior region81(0.54-1.70)(0.41-1.40)(0.29-1.97)(0.25-1.84)(0.55-3.90)(0.34-2.88)
Bleeding on probing
mSBI>2511.661.400.960.871.591.10
mSBI < 2361(0.87-3.15)(0.68-2.85)(0.28-3.34)(0.23-3.31)(0.62-4.04)(0.39-3.15)
Probing depth (PD)
PD>4 mm1702.10*2.02*1.341.393.29*3.46*
PD < 4 mm242(1.32-3.34)(1.23-3.31)(0.60-3.01)(0.59-3.24)(1.56-6.94)(1.55-7.77)
  1. *Logistic regression analyses showed in bold face whether differences were significant (p<0.05)
  2. CI confidence interval, OR odds ratio, p significance