The Vertical Soft Tissue Thickness and Subcrestal Implant Placement as Factors for Peri-implant Crestal bone Stability

Veljanovski, Darko and Atanasovska-Stojanovska, Aneta and Veljanovska-Pivkova, Aleksandra and Mijiritsky, Eitan and Bollen, Curd (2021) The Vertical Soft Tissue Thickness and Subcrestal Implant Placement as Factors for Peri-implant Crestal bone Stability. Open Access Maced J Med Sci, 9 (D 2021). pp. 257-63. ISSN 1857-9655

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Abstract

Aim

The aim of this prospective study was to determine the influence of vertical soft tissue thickness on bone level changes in platform-switched implants placed eqicrestally or subcrestally and restored with screw-retained or cement-retained restorations.

Methods

Platform-switched bone-level implants were placed in a single stage manner in the posterior mandibular region. Implant sites were divided into thick (control) and thin (test) vertical soft tissue groups. The implants in the control group were placed equicrestally. The implant sites from the control group were randomly allocated to receive equicrestally or subcrestally placed implants. Bone remodeling/loss was radiographically measured at baseline, three months postoperatively and six months after delivery of final prosthetic restoration.

Results

The mean crestal bone loss values three months postoperatively and six months post prosthetic restoration were higher in sites with thin versus sites with thick gingiva. In implant sites with thin gingiva, subcrestally placed implants presented less bone loss than eqicrestally placed implants.

Conclusion

Platform switched implants are prone to more bone loss when they are placed in sites with thin soft tissue, regardless of the type of final restoration (screw-retained or cement-retained). Subcrestal placement of platform-switched implants can prevent crestal bone loss in sites with vertical soft tissue thickness < 3 mm.

Item Type:	Article
Subjects:	Medical and Health Sciences > Clinical medicine
Divisions:	Faculty of Medical Science
Depositing User:	Darko Veljanovski
Date Deposited:	06 Mar 2024 12:09
Last Modified:	06 Mar 2024 12:09
URI:	https://eprints.ugd.edu.mk/id/eprint/33825

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