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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

May 2021
Volume 52 , Issue 5

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Effect of soft tissue thickness on crestal bone loss of early loaded implants with platform switching: 1- and 5-year data

Alper Saglanmak, DDS, PhD/Alper Gultekin, DDS, PhD/Caglar Cinar, DDS, PhD/Serge Szmukler-Moncler, DDS, PhD/Cuneyt Karabuda, DDS, PhD

Pages: 426433
DOI: 10.3290/j.qi.b912613

Objectives: The aim of this retrospective study was to evaluate the effect of vertical soft tissue thickness (STT) on crestal bone loss (CBL) of early loaded implants after 1 and 5 years. Method and materials: Forty-four tapered implants with platform switching and conical connection were placed in the posterior mandible and maxilla to rehabilitate edentulous sites. STT at implant sites was divided into two groups: thin (n = 21, mean STT = 2.0  0.3 mm) and thick (n = 23, mean STT = 3.0  0.8 mm). The implants were loaded after 6 to 8 weeks. Survival and success rates and CBL were measured after 1 and 5 years. Results: The survival and success rates at 1 and 5 years were 100% and 97.8%, respectively. At the 1-year follow-up, the CBL of the thin and thick gingival groups was 0.96  0.49 and 0.55  0.41 mm, respectively; the difference was statistically significant (P = .004). At 5 years, the CBL of the thin and thick gingiva groups increased to 1.12  0.84 and 0.65  0.69 mm, respectively; the difference was not statistically significant (P = .052). Conclusion: At 1 year, the CBL was more pronounced at sites with a thin gingiva; at 5 years the difference between the groups was not statistically significantly different. Within the limitations of this study, early loading of implants with platform switched and conical connection was safe.

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