IADR Abstract Archives

Association Between the Thickness of the Palatal Mucosa Around Implants and Periimplantitis- a Cross Sectional Study

Objectives: Based on clinical observations, we hypothesize that in the palatal aspect of dental implants thicker mucosal tissue may be associated with deeper pockets. The aim of this cross-sectional study was to examine and compare the thickness of the palatal tissue between healthy implants , implants with periimplantitis and natural teeth.
Methods: Patients who visited the department of periodontology for supportive periodontal therapy were screened. Patients with dental implants in the posterior maxilla (>12 months post final restoration) and contra-lateral natural tooth were recruited. Pocket depth (PD), Recession (REC), Gingival Index (GI), bleeding on probing (BOP) and plaque index (PI) were recorded. Periapical parallel radiographs were taken to determine the bone level at implants/teeth. Diagnosis of periodontal and peri-implant diagnosis was determined using clinical and radiographic parameters. Paired t-test and Pearson correlation were used to compare teeth and implants as well as diseased and healthy sites.
Results: Sixty-one patients were included. A comparison between implants and teeth revealed that dental implants presented deeper pockets (4.49±1.55 mm Vs 3.59±1.24 mm, p-value=0.001), shallower recession (0.38±0.71 Vs. 0.93±1.05, p-value=0.001) and thicker palatal mucosa at the bottom of the pocket (4.6±1.32 Vs. 2.99±1.09, P=0.000) and 3 mm coronal (3.58±2.15 Vs. 1.86±0.99, P=0.000) compared to contralateral teeth. The thickness of the palatal mucosa was higher in peri-implantitis compared to periodontitis (5.00±1.26mm Vs. 3.29±1.13mm, p=0.000). When comparing healthy versus diseased teeth/implants thicker gingiva /mucosa was observed in the periodontitis palatal aspects (3.29±1.13mm vs. 2.6±1.0mm, p=0.017 ) and periimplantitis (5.0±1.26mm vs. 4.0±1.22mm, p=0.003 ). A moderate positive correlation was found between mid-palate PD and palatal thickness in teeth (r=0.36, P=0.004). While a stronger and more significant correlation was found in implants: r=0.56, P=0.000.
Conclusions: thick palatal tissue is related to periodontal and especially peri-implant disease severity. Therefore, surgical thinning of the palatal tissue should be considered during implant placement or uncovering.

2021 Israeli Division Meeting (Jerusalem, Israel)

2021

  • Abu-hussein, Hiba  ( Rambam Health Care Campus , Haifa , Haifa , Israel )
  • Khutaba, Alaa  ( Rambam Health Care Campus , Haifa , Haifa , Israel )
  • Gabay, Eran  ( Rambam Health Care Campus , Haifa , Haifa , Israel )
  • Machtei, Eli  ( Rambam Health Care Campus , Haifa , Haifa , Israel )
  • Zigdon Giladi, Hadar  ( Rambam Health Care Campus , Haifa , Haifa , Israel )
  • none
    Oral Session
    Oral Session 3