comparison of retention of titanium parapost luted with mta and four common dental cements: an in vitro study

نویسندگان

l rezaei-soufi assistant professor, department of operative dentistry, dental research center, faculty of dentistry, hamadan university of medical sciences, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences)

sh kasrei associate professor, member of dental reseach center, operative dentistry department , facul ty of dentistry, hamadanسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences)

z khamverdi associate professor, member of dental reseach center, operative dentistry department , facul ty of dentistry, hamadanسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences)

چکیده

statement of the problem when root perforation occurs in the middle third of the root, considerable canal length that would normally be available for post placement must be filled by the repair material, which necessitates placement of a considerably shorter post, leading to poor retention. purpose the aim of this study was to compare retention of titanium parapost luted with mta and four different cements. materials and methods one hundred recently extracted human sound mandibular premolars were selected and coronal portion of each tooth was removed. the roots were endodontically instrumented and assigned to 5 groups (n=20). in five groups, the specimens were obturated with gutta-percha/ah26 sealer and the post was cemented into the roots with one of the five luting agents: zinc phosphate harvard (group zp), glass-ionomer gc (group gi), resin cement panavia f2.0 (group pf2), self-adhesive cement relyx unicem (group ru) and mineral trioxide aggregate white proroot (group mta). in each specimen, a parallel-sided titanium parapost was seated to a depth of 10 mm in the post space prepared with the corresponding drill size. the debonding force (newton) was measured using a universal testing machine and the failure mode was evaluated by a stereomicroscope. statistical analysis was performed by anova and tukey test (α=0.05) results the means and standard deviations of post retention in different groups were: zp (311.3±41.0), gi (289.2±35.5), pf2 (285.0±29.5), ru (191.3±21.8) and mta (185.0±24.4). one-way anova showed significant differences in retention values between the groups (p=0.000). tukey test showed that although there were no significant differences in the retention of posts luted with zp, gi and pf2, they were significantly (p<0.05) higher than those luted with mta and ru. conclusion the results of this study showed that retention of posts luted with mineral trioxide aggregate was lower in comparison with other common luting agents

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Assessment and comparison of retention of zirconia copings luted with different cements onto zirconia and titanium abutments: An in vitro study

AIM The purpose of this in vitro study was to assess and compare the retention of zirconia copings luted with different luting agents onto zirconia and titanium abutments. MATERIALS AND METHODS Titanium and zirconia abutments were torqued at 35 N/cm onto implant analogs. The samples were divided into two groups: Group A consisted of four titanium abutments and 32 zirconia copings and Group B ...

متن کامل

Final Retention of Recemented Dental Casting Luted with Different Resin Cements

Background and Aim: Dislodgment of prosthetic crowns is a common occurrence. In such cases, recementation is a suitable treatment option. The aim of this study was to compare the retention in cementation and recementation using different resin ce-ments. Materials and Methods: In this in vitro, experimental study, 40 premolars were se-lected (n=10). They were standardized relative to some prope...

متن کامل

Comparison of the solubility of conventional glass ionomer and modified cements: An in vitro study

Comparison of the solubility of conventional glass ionomer and modified cements: An in vitro study Dr. H. Torabzadeh* - Dr. S. Bai** *- Associate Professor of Operative Dentistry Dept. - Faculty of Dentistry – Shaheed Beheshti University of Medical Sciences. ** - Dentist. Background and Aim: Solubility of restorative materials leads to loss of marginal intergrity, surface properties and aesthet...

متن کامل

a comparison of teachers and supervisors, with respect to teacher efficacy and reflection

supervisors play an undeniable role in training teachers, before starting their professional experience by preparing them, at the initial years of their teaching by checking their work within the proper framework, and later on during their teaching by assessing their progress. but surprisingly, exploring their attributes, professional demands, and qualifications has remained a neglected theme i...

15 صفحه اول

Effect of smear layer on the retention of custom made posts luted with two different cements

Effect of smear layer on the retention of custom made posts luted with two different cements Dr. H. Sazgara*- Dr. K. Seyyedan ** - Dr. A.H. Majidi*** *Associate Professor of Fixed Prosthodontics Dept., Faculty of Dentistry, Shaheed Beheshti University of Medical Sciences.**Assistant Professor of Fixed Prosthodontics Dept., Faculty of Dentistry, Shaheed Beheshti University of Medical Sciences. *...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
avicenna journal of dental research

جلد ۳، شماره ۲، صفحات ۱۳-۱۸

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023