A retrospective study of six fractured platform-switching abutments.
- Author:
Yibo ZHU
1
;
Lixin QIU
2
;
Jianhui LI
;
Ye LIN
Author Information
- Publication Type:Journal Article
- MeSH: Crowns; Dental Abutments; Dental Implant-Abutment Design; Dental Porcelain; Dental Restoration Failure; Female; Humans; Male; Molar; Retrospective Studies
- From: Chinese Journal of Stomatology 2015;50(9):527-530
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo explore the reasons for platform-switching abutment fracture, the treatment and prevention methods.
METHODSBetween March 2009 and December 2014, all of the fractured platform-switching abutments were evaluated. The fracture rate of platform-switching abutments was calculated and the gender, age, implant site, implant size, abutment size, prosthetic type, loading time and crown materials were analyzed.
RESULTSA total of 2 487 platform-switching implants were placed during this period and 6 abutments were fractured. The fracture rate was 0.24% (6/2 487). All of the 6 fractured abutments were placed in molar region. All occlusal planes were made of metal material. Five patients were male. All the fracture abutments could not be removed and the implants had to be removed and reimplanted.
CONCLUSIONSWithout special abutment removing instruments, it is difficult to remove the fractured platform-switching abutment. In molar region, platform-switching implant system should be carefully used. Increasing implants number and splinting crowns with porcelain occlusal planes might reduce the abutment fracture risk.
