definitive restoration - soft tissue level implant、platform switched implants、platform switching、pink esthetic score

美國植體品牌 - Influence of thin mucosal tissues on crestal bone stability around implants with platform switching a 1-year pilot study

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學術文章：
Influence of thin mucosal tissues on crestal bone stability around implants with platform switching: a 1-year pilot study

作者：Linkevicius T, Apse P, Grybauskas S, Puisys A.
出處：J Oral Maxillofac Surg. 2010 Sep; 68(9): 2272-7.

摘要：
ABSTRACT

Purpose:

The aim of this pilot study was to determine what effect thin mucosal tissues can have on crestal bone stability around implants with platform switching.

Materials and Methods:

Twelve 2-piece implants, consisting of 6 implants with horizontally matching implant-abutment connection (control) and 6 implants with platform switching (test) were placed in four patients. The mean age of the patients was 43 years (range, 37 to 56 yrs). Mucosal tissue thickness at implant sites was measured to be 2mm or less. Implants were restored with 5 splinted crowns and single 3-unit fixed partial denture. Intraoral radiographs were obtained and crestal bone changes were measured at implant placement and after a 1-year follow up post-treatment. The statistical significance level was set to P less than .05.

Results:

Bone loss around the test implants was 1.81 ± 0.39mm on the mesial side and 1.70 ± 0.35mm on the distal aspect. Control implants overcame marginal bone resorption equaling 1.60 ± 0.46mm on the mesial side and 1.76 ± 0.45mm on the distal measurement. No statistically significant difference was found between control and test implants either mesially (F[1,10}= 0.746;P= .408) or distally (F[1,10}= 0.080;P= .783).

Conclusion:

Within the limitations of this pilot study it can be concluded that implants with platform switching did not preserve crestal bone better in comparison with implants with traditional implant-abutment connection if, at the time of implant placement, thin mucosal tissues were present.

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