Journal of Conservative Dentistry
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   2004| July-September  | Volume 7 | Issue 3  
    Online since October 12, 2010

 
 
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Evaluation Of Dimensional Stability Of Polyvinyl Siloxane Impression Materials Over A Period – An Invitro Study
S Devalla, C Yohan, L Lakshmi Narayanan
July-September 2004, 7(3):122-127
This invitro study carried out on typhodont teeth, evaluated the dimensional stability of four different polyvinyl siloxane impression materials that include Provil-novo, Express, Aquasil and Virtual over a period of five days. Ten impressions of each of these materials were poured immediately, ten after 24 hrs. and ten after 5 days. The change in dimension was measured at reference point, which is present on master model. The result showed Aquasil to be the most and Provil-nova to be the least dimensionally stable.
[ABSTRACT]   Full text not available  [PDF]
  455 57 -
Comparison Of Three Different Pre-Fabricated Post Systems With Custom Post System For Retention In The Root Canal – An In Vitro Evaluation
G Parmar, A Vora
July-September 2004, 7(3):107-112
When inadequate tooth structure remains for retention of a restoration, clinically acceptable method is the fabrication of a post and core. For many years, cast post and core. For many years, cast post and core has been in practice even they were time consuming. Prefabricated posts came into practice that seemed to be time saving and economical. Present study compares the retention of three different prefabricated post systems. Group I (control group) : Custom Cast Posts. Group II, III and IV : Prefabricated Para Post, Titanium threaded posts and Fiber glass posts respectively. Group III (titanium threaded posts) showed maximum retention values followed by custom cast posts para posts and galss fiber posts in descending grades of retention.
[ABSTRACT]   Full text not available  [PDF]
  397 80 -
Evaluation Of Retentive Strength Of Amalgam Bonding Agents Using Chemical Cure, Light Cure And Dual Cure Methods
V Shetty, V. D Prabhu, R. N Rao, J Patil
July-September 2004, 7(3):117-121
Sliver amalgam has been used as a permanent restorative material in dentistry since the 19th century. The advantages of amalgam are its strength, cost effectiveness and less technique sensitivity. However, the principal disadvantage of amalgam is its inability to bond to the tooth structure there by resulting in decreased retention. To overcome this problem amalgam bonding agents are used. They are dual cured, light cured or chemical cured. Each system has its own advantages and disadvantages. This study was done to assess the retentive strength of bonding agents cured by chemical cure, light cure and dual cure. The results of the studies indicated that dual cure had the best retentive strength followed by light cure and chemical cure. Cavity varnish had the least strength.
[ABSTRACT]   Full text not available  [PDF]
  399 56 -
Suitability Of The Shear Punch Test For Evaluating Dental Restorative Materials
S Sylesh, C Yohan, L Lakshmi Narayanan
July-September 2004, 7(3):128-132
This study evaluated the suitability of the shear punch test to determine the mechanical properties of a wide range of restorative materials. The method was evaluated by determining the shear strength values of five different restorative materials; Silver amalgam, a microfilled resin composite (Durafill VS). packable hybrid resin composite (Filtek P60), resin modified glass ionomer cement (Fuji II LC) and a high-viscosity ionomer cement (Fuji IX GP) and comparing the obtained values of strength with the known clinical performance of these materials. The shear strength values of different types of materials showed statistically significant differences (p<0.0001). The punch strength values increased in the order resin modified glass ionomer <high viscosity glass ionomer < microfilled composite resin < packable hybrid composite resin < amalgam. The rank order of strength values obtained were consistent with the known clinical performance of these materials.
[ABSTRACT]   Full text not available  [PDF]
  346 57 -
Comparative Evaluation Of Tensile Bond Strength Of An Ormocer Based Bonding Agent With A Vth Generation Bonding Agent
P Bogra, V Nikhil, V Singh, S Sharma, V Arora
July-September 2004, 7(3):133-139
The in vitro study was carried out comparatively evaluating the tensile bond strength of an Ormocer based adhesive (Admira Bond, VOCO) with a conventional Vth generation adhesive (Syntac Sprint, Vivadent) using Scanning Electron Microscope. The occlusal surfaces of thirty-extracted human third molars were ground to expose a flat dentinal surface, mounted and randomly divided into two groups. Group I – A standardized column of Ormocer based composite, Admira with a wire loop inserted in it was bonded after conditioning. Group 2 – The same procedure was followed as for group I except that the adhesive used was Syntac Sprint and composite Tetric Ceram was used. The stored specimens were subjected to thermocycling and tested in a tensile mode in Universal Testing Machine. The mean bond strength value for group I was found to be 13.82 Mpa and group 2 was 10.75 Mpa. The results were statistically analyzed using student’s t-test and it was found that the bond strength values for group 2 were significantly higher than group I. The present study concludes that the ormocer based adhesive system has got improved bonding to dentine as compared to conventional adhesive system.
[ABSTRACT]   Full text not available  [PDF]
  301 63 -
Esthetic Reconstruction Of Traumatized Maxillary And Periodontally Weakened Mandibular Anteriors – A Case Report
S. K Vasudev, B. R Goel
July-September 2004, 7(3):113-116
A motorcycle accident victim came with lost maxillary anterior teeth, most of them were fractured in cervical one-third region. Lower anteriors were periodontally weak, with grade II mobility, and labially placed. This presentation describes a step-by-step approach to the treatment for an accident victim in whom anterior teeth have been fractured or lost. This presentation also demonstrates how accurate diagnosis and treatment planning by the dentist can result in a well-conceived, and successful restoration following traumatic injury of dentition.
[ABSTRACT]   Full text not available  [PDF]
  284 44 -
Dental Research Abstracts
Amrit Raj Bahl
July-September 2004, 7(3):140-141
Full text not available  [PDF]
  168 38 -
Editorial
Vimal Sikri
July-September 2004, 7(3):105-105
Full text not available  [PDF]
  153 29 -
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