Abstract
Introduction: One of the most studied and researched subjects in dentistry is the restoration of endodontically treated teeth. The success of an endodontically treated tooth depends not only good endodontic therapy but is equally if not more dependent on the nature, type, and execution of post-endodontic restorations. The purpose of this study was to know the opinions, techniques, and materials used by Nepalese Prosthodontists for restoring endodontically treated teeth with a post.
 Materials and Methods: A nationwide survey was performed among Nepalese Prosthodontists through electronic communication media by distributing a questionnaire to find out the various treatment strategies, post types, and materials being used by them. Descriptive statistics were used to analyze the responses given by the Prosthodontists by using SPSS statistical software package (version 21.0).
 Results: A total of 69 returned questionnaires out of the 114 sent were included in the study. The majority of the respondents were in the age group of 31-40 yrs (70.6%, N=48). 51% of the respondents were male and 49% were female. Out of the responses analyzed, 91% (N=63) think that the primary purpose of a post is to retain a core. The quantity of remaining tooth structure affects the decision to place a post (98.5%, N=68). The ideal post length for 81.2% (N=56) respondents was 2/3rd the root length. 55% (N=38) of respondents think that 4-5mm of apical Gutta Percha should be left during post space preparation. The preferred type of post was custom cast metal post for 69.5 % (N=48) and prefabricated fiber-reinforced post for 66.6% (N=46).55% (N=38) of respondents preferred the passive type of post. Out of the respondents, 72% (N=50) were using Glass Ionomer Cement for cementing cast posts and 91% (N=63) of them were using resin cement for fiber-reinforced posts. The most popular core build-up material was dual-cured composite resin (63.8%, N=44).
 Conclusion: Although the results obtained cannot give a definitive guide for restoration of endodontically treated teeth with a post, it pictures how the Nepalese Prosthodontists are practicing posts for restoring endodontically treated teeth. The varied responses obtained here can be taken into consideration to conclude that the preference of techniques and materials depends upon the individual clinician and the clinical scenario.
Highlights
One of the most studied and researched subject in dentistry is restoration of endodontically treated tooth
There have been several studies among various dental professionals on their knowledge, attitude and clinical practice on post and core therapy on endodontically treated tooth in the past and these studies can give us some insight about the status of post and core therapy on those countries and regions.[14,15,16,17,18,19,20,21,22,23]. This present study aims towards finding out the scenario of treatment of endodontically treated tooth with post and core by Prosthodontists of Nepal
Most of the respondents of this study think that the major purpose of a post is to retain a core and not to strengthen an endodontically treated tooth
Summary
One of the most studied and researched subject in dentistry is restoration of endodontically treated tooth. The purpose of this study was to know the opinions, techniques, and materials used by Nepalese Prosthodontists for restoring endodontically treated teeth with a post. The success of an endodontically treated tooth depends good endodontic therapy but is if not more dependent on the nature, type and execution of post endodontic restorations like direct restorations (e.g. composite, amalgam), crowns, post and core etc.[2, 5, 8,9,10] The importance of remaining cervical tooth structure after endodontic therapy is well known for many years and plays an important role in creating ferrule effect. There have been several studies among various dental professionals on their knowledge, attitude and clinical practice on post and core therapy on endodontically treated tooth in the past and these studies can give us some insight about the status of post and core therapy on those countries and regions.[14,15,16,17,18,19,20,21,22,23] This present study aims towards finding out the scenario of treatment of endodontically treated tooth with post and core by Prosthodontists of Nepal
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