A Study on the Screw Loosening Torque According to the Type of Tightening the Implant Fixture and Abutment

Abstract

Purpose:In this study, the loosening torque test was conducted with three implant products that are produced, approved and sold in Korea, which are manufactured in different fixture and abutment tightening methods (internal submerged type, internal morse taper type, and external type) to examine the loosening torque of the screw according to the method of tightening the implant fixture and abutment.Methods: In the loosening torque test, the three types of fixtures and abutments with different tightening methods were tightened by rotating them clockwise with a 30 N force using a driver equipped with an electric torque meter. The results of the test are as follows.Results: The loosening torque values of the internal submerged type, internal morse taper type and external type implants were 24.10 0.742 N , 29.10 1.710 N , and 26.60 1.636 N , respectively. Conclusion: The screw loosening torque values of the three fixture and abutment tightening methods were analyzed via Kruskal Wallis test layout, and they were significantly different (p<0.05).[Abstract] 201

The Study of Compression Shear Load of Implanting in Four Different Fastening Method

“…However, it is also reported for the mechanical properties of the implant in a variety of studies, such as fracture, loosening of the screw phenomenon, fatigue strength, and stress due to the difference between the prosthetic implant made to the fastening system and Osseo integration failure [7,8,9,10]. The hardness of the implant, which is made of commercially pure titanium Grade with the same hardness, has to be compared by the mechanical properties of the implant according to the difference of the coupling method because it is determined by the properties of the alloy, however, previous studies were a mixture of commercially pure titanium Grade 3 and commercially pure titanium Grade 4, so there was a limitation of the comparison of the difference between the coupling method of the implant to the work [11].…”

“…The hardness of the implant, which is made of commercially pure titanium Grade with the same hardness, has to be compared by the mechanical properties of the implant according to the difference of the coupling method because it is determined by the properties of the alloy, however, previous studies were a mixture of commercially pure titanium Grade 3 and commercially pure titanium Grade 4, so there was a limitation of the comparison of the difference between the coupling method of the implant to the work [11]. The study the test specimen, but note that the study limitations shear compression load test using the other three implants signed with commercially pure titanium Grade 4 way with the same hardness produced by the implant, and have different mechanical characteristics of the coupling method was limited to a comparison of the pay-off phenomenon of the screw and the implant study [7,12], there is no research based on the differences between shear compression loads using commercially pure Titanium Grade 4 fixed the same hardness with different fastening methods with implanting fixture an abutment in the same vender.…”

Research on Size Precision of Implant Fixtures among Four Different Types of Fastening Methods

“…While researches involving implanting until now were physical tests or the stability of biopsies the studies such as surface treatment states regarding symphysis [9,10], shearing strength test of implant [13,14], implant screw annealing associated with fastened method [15,16,17], there was no study about size precision of outside about differences of fixed screen display size and actual length and diameter. The purpose of this study is to utilize by dental health data by investigating difference of indication size and actual size by carrying out size dimensional test selecting regular size implant fixtures that have similar upper diameter among four different types of fastening methods processed surface with SLA.…”

The Study of Compression Shear Load of Implanting in Three Different Fastening Method

“…Though implant with a locking structure has mechanical properties that it is strong to the Axial Load, but poor at the resistance to lateral loads [4], and various types of prosthesis by applied position, types of prosthesis and the quality of oral bone, many studies have been reported that clinical success rate is more than 90% [5,6]. However, it is also reported for the mechanical properties of the implant in a variety of studies, such as fracture, loosening of the screw phenomenon, fatigue strength, and stress due to the difference between the prosthetic implant made to the fastening system and Osseo integration failure [7,8,9,10]. The hardness of the implant, which is made of commercially pure titanium Grade with the same hardness, has to be compared by the mechanical properties of the implant according to the difference of the coupling method because it is determined by the properties of the alloy, however, previous studies were a mixture of commercially pure titanium Grade 3 and commercially pure titanium Grade 4, so there was a limitation of the comparison of the difference between the coupling method of the implant to the work [11].…”