[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 11, Issue 4 (J Res Dent Sci 2015) ::
J Res Dent Sci 2015, 11(4): 196-205 Back to browse issues page
In vitro evaluation of the effect of disto-labially inclined implant and Locator attachment on retention and longevity of implant-supported overdentures
S Jalalian Dr, H Ansari lari Dr * , P Atashrazm Dr, SM Fatemi Dr
, homeira2008@yahoo.com
Abstract:   (5923 Views)

 

Background and aim:

 

Several problems have been reported regarding the retention and longevity of the attachments of implant-supported overdentures. Few studies are available in this regard. This in-vitro experimental study evaluated the effect of disto-labial inclination of implant and attachment on retention and longevity of implant-supported overdentures.

 

 

 

 

 

Materials and Methods:

 

 

 

In this experimental study, 40 specimens in 8 groups were evaluated. Four mandibular edentulous models and related dentures were identically fabricated. Two implant analogues (Dentium, South Korea) were placed in each model. Analogues were placed at disto-labial inclinations of 5, 10 and 15 degrees. In the control group, analogues were placed parallel and at 90 degrees angle to the edentulous ridge.

 

Locator abutment (Dentium, South Korea) with red retainer was placed on each implant analogue. Each specimen was loaded by 3000 insertion and removal and 2000 thermal cycles. The retention of each specimen was measured after each 500 cycles with UTM (SANTAM, STM20). Data were analyzed by Repeated Measure ANOVA and TUKEY tests.

 

 

 

Results:

 

The maximum initial retention before thermo-cycling was found in specimens with 5 degrees of inclination (36.4±1.51 N). After thermo-cycling, the maximum retention was found in specimens with 15 degrees of inclination (30.7±1.11 N). The minimum retention was recorded in the group with 10 degrees of inclination in both conditions (17.18± 0.92 N). No significant difference was found between 5 and 15 degrees inclinations according to Repeated Measure ANOVA and TUKEY tests. But the retention in these inclinations was significantly higher than 0 (control) and 10 degrees inclinations. (P<0.001)

 

 

 

Conclusion:

 

 

 

Inclination of implant and attachment has a positive effect on the retention and longevity of overdenture in a way that by increasing the inclination to 15 degrees, the retention increases but wear-down rate and retention loss also increase simultaneously.

 

Keywords: dental prosthesis, implant-supported, implant inclination, attachment, denture retention, longevity
Full-Text [PDF 12 kb]   (1087 Downloads)    
Type of Study: original article | Subject: oral surgery
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA code


XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Jalalian S, Ansari lari H, Atashrazm P, Fatemi S. In vitro evaluation of the effect of disto-labially inclined implant and Locator attachment on retention and longevity of implant-supported overdentures. J Res Dent Sci. 2015; 11 (4) :196-205
URL: http://jrds.ir/article-1-486-en.html


Volume 11, Issue 4 (J Res Dent Sci 2015) Back to browse issues page
مجله تحقیق در علوم دندانپزشکی Res Dent Sci
Persian site map - English site map - Created in 0.06 seconds with 31 queries by YEKTAWEB 3792