Click for new scientific resources and news about Corona[COVID-19]

Paper Information

Journal:   JOURNAL OF DENTAL SCHOOL SHAHID BEHESHTI UNIVERSITY OF MEDICAL SCIENCE   WINTER 2012 , Volume 29 , Number SPECAIL ISSUE; Page(s) 328 To 337.
 
Paper: 

MARGINAL ADAPTATION OF THE THREE INDIRECT CROWNS

 
 
Author(s):  MOEZZYZADEH M., JABERI ANSARI Z., SHESHMANI M.
 
* 
 
Abstract: 

Background & Aim: Good marginal adaptation is a prerequisite for a successful crown restoration while the incidence of microleakage, caries, damage to the base teeth and periodontal diseases is facilitated when this criteria is not achieved. Therefore, the present study determined the marginal gap in the porcelain crowns compared to indirect composite restorations of GC Gradia and Signum.
Materials & Methods: In this invitro experimental study, 30 impressions were taken in the similar conditions and randomly assigned to receive porcelain crowns (Noritake super porcelain Ex-3) or indirect composite crowns of GC Gradia and Signum when no fluid and porosity were noted on them. The crowns were fitted on the master metal die and assessed by the stereomicroscope after complete sitting and finishing line preparation. The assessments were carried out on 8 points 1mm from the finishing line (buccal, lingual, mesial, distal, mesiobuccal, distobucaal, mesiolingual and distolingual). Then, 8 jigs were fabricated and total 240 readings were made. The values were converted to micron and the statistical comparisons were made using nonparametric Kruskal-wallis and Mann-whitney U tests.
Results: Marginal gap of porcelain crowns was 29.08
±9.38 mm and 84.53±15.47 mm on the lingual and disto lingual points andtheGC gradia indirect composite, was 43.63±13.40 mm and 74.53±28.03 mm on the distal and distolingual points as well as 39.08±17.68 mm and 95.44±30.66 mm on the distal and mesiolingual aspects of the Signum indirect composites respectively. No significant differences were noted between the three crowns brands on the mesial, distal, mesiobuccal, distobuccal, and mesiolingual aspects. only 3 points (buccal, lingual and disto lingual) had significant differences.
Conclusion: Regarding clinically acceptable values of marginal gaps mentioned in the literature, porcelain jacket crowns and indirect composite crowns possesses the necessary criteria of marginal gap and can be successfully used for crown restorations.

 
Keyword(s): MARGINAL GAP, INDIRECT COMPOSITE CROWNS, MICROLEAKAGE
 
 
References: 
  • Not Registered.
  •  
  •  
 
Citations: 
  • Not Registered.
 
+ Click to Cite.
APA: Copy

MOEZZYZADEH, M., & JABERI ANSARI, Z., & SHESHMANI, M. (2012). MARGINAL ADAPTATION OF THE THREE INDIRECT CROWNS. JOURNAL OF DENTAL SCHOOL SHAHID BEHESHTI UNIVERSITY OF MEDICAL SCIENCE, 29(SPECAIL ISSUE), 328-337. https://www.sid.ir/en/journal/ViewPaper.aspx?id=276098



Vancouver: Copy

MOEZZYZADEH M., JABERI ANSARI Z., SHESHMANI M.. MARGINAL ADAPTATION OF THE THREE INDIRECT CROWNS. JOURNAL OF DENTAL SCHOOL SHAHID BEHESHTI UNIVERSITY OF MEDICAL SCIENCE. 2012 [cited 2021July25];29(SPECAIL ISSUE):328-337. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=276098



IEEE: Copy

MOEZZYZADEH, M., JABERI ANSARI, Z., SHESHMANI, M., 2012. MARGINAL ADAPTATION OF THE THREE INDIRECT CROWNS. JOURNAL OF DENTAL SCHOOL SHAHID BEHESHTI UNIVERSITY OF MEDICAL SCIENCE, [online] 29(SPECAIL ISSUE), pp.328-337. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=276098.



 
 
Persian Abstract Yearly Visit 34
 
 
Latest on Blog
Enter SID Blog