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Effects of implant thread profile on insertion stress generation in cortical bone studied by dynamic finite element simulation / 대한치과보철학회지
The Journal of Korean Academy of Prosthodontics ; : 279-286, 2014.
Article in Korean | WPRIM | ID: wpr-201574
ABSTRACT

PURPOSE:

The aim of this study was to investigate the effect of implant thread profile on the marginal bone stresses which develop during implant insertion. MATERIALS AND

METHODS:

Four experimental implants were created by placing four different thread systems on the body (4.1 mm x 10 mm) of the ITI standard implant. The thread types studied in this study included the buttress, v-shape, reverse buttress, and square shape threads. In order to examine the insertion stress generation, 3D dynamic finite element analysis was performed which simulated the insertion process of implants into a 1.2 mm thick cortical bone plate (containing 3.5 mm pilot hole) using a PC-based DEFORM 3D (ver 6.1, SFTC, Columbus, OH, USA) program.

RESULTS:

Insertion stresses higher than human cortical bone developed around the implants. The level of insertion stresses was much different depending on the thread. Stress level was lowest near the v-shape thread, and highest near the square shaped thread. Difference in the interfacial bone stress level was more noticeable near the valley than the tip of the threads.

CONCLUSION:

Among the four threads, the v-shape thread was turned out to minimize the insertion stress level and thereby create better conditions for implant osseointegration.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Bone Plates / Osseointegration / Implants, Experimental / Finite Element Analysis Limits: Humans Language: Korean Journal: The Journal of Korean Academy of Prosthodontics Year: 2014 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Bone Plates / Osseointegration / Implants, Experimental / Finite Element Analysis Limits: Humans Language: Korean Journal: The Journal of Korean Academy of Prosthodontics Year: 2014 Type: Article