The Effect of Select Pulp Cavity Conditions on Stress Field Development in Distal Abutments in Two Types of Fixed Dental Prostheses

Manda, M; Galanis, C; Venetsanos, D; Provatidis, C; Koidis, P

dc.contributor.author	Manda, M	en
dc.contributor.author	Galanis, C	en
dc.contributor.author	Venetsanos, D	en
dc.contributor.author	Provatidis, C	en
dc.contributor.author	Koidis, P	en
dc.date.accessioned	2014-03-01T02:07:08Z
dc.date.available	2014-03-01T02:07:08Z
dc.date.issued	2011	en
dc.identifier.issn	0893-2174	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29520
dc.subject.classification	Dentistry, Oral Surgery & Medicine	en
dc.subject.other	FINITE-ELEMENT-ANALYSIS	en
dc.subject.other	ENDODONTICALLY TREATED TEETH	en
dc.subject.other	REDUCED BONE SUPPORT	en
dc.subject.other	OF-THE-LITERATURE	en
dc.subject.other	BIOMECHANICAL CONSIDERATIONS	en
dc.subject.other	PARTIAL DENTURES	en
dc.subject.other	RESTORED TOOTH	en
dc.subject.other	FIBER POSTS	en
dc.subject.other	RESTORATION	en
dc.subject.other	CROWN	en
dc.title	The Effect of Select Pulp Cavity Conditions on Stress Field Development in Distal Abutments in Two Types of Fixed Dental Prostheses	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	Purpose: Insufficient coronal tooth structure may require restoration of endodontically treated (ET) teeth with cast posts and cores (CPCs). The prognosis for these teeth is a matter of scientific debate, especially if they serve as distal abutments in cantilever fixed dental prostheses (FDPs). The purpose of this study was to study stress field development in distal abutments in two types of FDPs with different pulp cavity conditions. Materials and Methods: The methodology involved the development of four digital models in which the right mandibular premolars were splinted via an FOP with: (1) no cantilever and a vital distal abutment, (2) no cantilever and an ET CPC distal abutment, (3) a single-unit cantilever and a vital distal abutment, and (4) a single-unit cantilever with an ET CPC distal abutment. The models were analyzed using a threedimensional finite element program, and von Mises stress values and patterns were evaluated. Results: The results revealed that although the stress distribution patterns in dentin were dissimilar, the von Mises stress values registered for the vital and ET CPC distal abutment were not considerably different. However, higher stress values were detected in the dentin area surrounding the post gutta-percha interface after CPC placement. The addition of the cantilever resulted in a considerable increase in stress on the dental tissue structures. Conclusions: CPCs appear to create a risk of potential fracture that is initiated in the dentin at the apex of the post. The type of restoration appears to have a much more serious impact on the stress pattern developed in the distal abutment, and the addition of a cantilever appears to biomechanically compromise both biologic and restorative structures. Int J Prosthodont 2011;24:118-126.	en
heal.publisher	QUINTESSENCE PUBLISHING CO INC	en
heal.journalName	INTERNATIONAL JOURNAL OF PROSTHODONTICS	en
dc.identifier.isi	ISI:000288832900004	en
dc.identifier.volume	24	en
dc.identifier.issue	2	en
dc.identifier.spage	118	en
dc.identifier.epage	126	en