the effect of aging on the accuracy of spring-style mechanical torque limiting devices for dental implants
نویسندگان
چکیده
objective: recently, a wide variation has been reported in delivery of the target torque by spring-style mechanical torque limiting devices (mtlds) but the effect of aging on their accuracy has not been independently evaluated. the purpose of this study was to determine the effect of aging on the accuracy of spring-style mtlds. methods: in this in-vitro experimental study, 15 new spring-style mtlds were selected of three different manufacturers. to measure their accuracy, the peak torque was measured in 10 sequences by a tohnichi torque gauge before and after 1000 times of use. in each sequence, 10 repetitions of peak torque values were registered. the intra-class correlation coefficient (icc) was calculated and repeated measures anova and two-way anova were applied to calculate and compare the absolute error values between the three understudy groups. results: the absolute error value was in the range of -3.5+-3 ncm for 3i group, -2.5+1 ncm for iti and -4-+2 ncm for nobel biocare group. the latter value showed a significant difference with the two former values (p<0.05). all samples in the iti group had error values within 10% of the clinically acceptable range. about 5% of measurements (maximum of 11.4%) in nobel biocare and 9% of measurements (maximum of 14.53%) in the 3i group showed error values greater than the 10% range. conclusion: aging decreased the accuracy of spring-style mtlds. the magnitude and trend of reduction in accuracy were variable among different groups.
منابع مشابه
the effect of aging on the accuracy of new friction-style mechanical torque limiting devices for dental implants.
high variability in delivering the target torque is reported for friction-style mechanical torque limiting devices (f-s mtlds). the effect of aging (number of use) on the accuracy of these devices is not clear. the purpose of this study was to assess the effect of aging on the accuracy (±10% of the target torque) of f-s mtlds.fifteen new f-s mtlds and their appropriate drivers from three differ...
متن کاملThe Effect of Aging on the Accuracy of New Friction-Style Mechanical Torque Limiting Devices for Dental Implants
OBJECTIVE High variability in delivering the target torque is reported for friction-style mechanical torque limiting devices (F-S MTLDs). The effect of aging (number of use) on the accuracy of these devices is not clear. The purpose of this study was to assess the effect of aging on the accuracy (±10% of the target torque) of F-S MTLDs. MATERIALS AND METHODS Fifteen new F-S MTLDs and their ap...
متن کاملThe effect of steam sterilization on the accuracy of spring-style mechanical torque devices for dental implants
BACKGROUND Mechanical torque devices (MTDs) are one of the most commonly recommended devices used to deliver optimal torque to the screw of dental implants. Recently, high variability has been reported about the accuracy of spring-style mechanical torque devices (S-S MTDs). Joint stability and survival rate of fixed implant supported prosthesis depends on the accuracy of these devices. Currentl...
متن کاملthe effect of sterilization and number of use on the accuracy of friction-style mechanical torque limiting devices for dental implants
background: mechanical torque limiting devices (mtlds) are necessary tools to control a peak torque and achieving target values of screw component of dental implants. due to probable effect of autoclaving and number of use on the accuracy of these devices, this study aimed to evaluate the effect of sterilization and number of use on the accuracy of friction-style mechanical torque limiting devi...
متن کاملevaluation of the accuracy and related factors of the mechanical torque-limiting device for dental implants.
accurate delivery of torque to implant screws is critical to generate ideal preload in the screw joint and to offer protection against screw loosening. mechanical torque-limiting devices (mtlds) are available for this reason. in this study, the accuracy of one type of friction-style and two types of spring-style mtlds at baseline, following fatigue conditions and sterilization processes were de...
متن کاملThe combined effect of dismantling for steam sterilization and aging on the accuracy of spring-style mechanical torque devices
PURPOSE This study aimed to assess the combined effect of dismantling before sterilization and aging on the accuracy (±10% of the target torque) of spring-style mechanical torque devices (S-S MTDs). METHODS Twenty new S-SMTDs from two different manufacturers (Nobel Biocare and Straumann: 10 of each type) were selected and divided into two groups, namely, case (group A) and control (group B). ...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
journal of dental school, shahid beheshti university of medical sciencesجلد ۳۱، شماره ۲، صفحات ۷۸-۸۶
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023