Browse > Article

STRESS DISTRIBUTION OF PERIODONTALLY INVOLVED TEETH RESTORED WITH VAR10US POSTS -THREE-DIMENSIONAL FINITE ELEMENT STUDY-  

Jeong, Hye-Jin (Department of Dentistry, College of Medicine, Inha University)
Yoo, Jae-Heung (Department of Dentistry, College of Medicine, Inha University)
Oh, Nam-Sik (Department of Dentistry, College of Medicine, Inha University)
Kim, Han-Sung (Institute of Medical Engineering, Yonsei University)
Publication Information
The Journal of Korean Academy of Prosthodontics / v.45, no.5, 2007 , pp. 567-578 More about this Journal
Abstract
Statement of problem: The endodontically treated tooth is generally restored with post and core, owing to the brittle and the loss of large amount of tooth structure. As periodontal treatment was developed, there are many cases that periodontally involved teeth used in prosthetic treatment. Purpose: The purpose of this study was to analyze the stress distribution in the dentin and post structures by the various post materials and the amount of remaining alveolar bone height. Material and method: The 3-dimensional finite element models of mandible 1st premolars were divided into six types according to the various amount of remaining alveolar bone and post type. All types were modeled using equal length, diameter and shape of the post. Three types of post and core materials were used: prefabricated titaniumpost and amalgam core, prefabricated stainless steel post and amalgam core, and cast gold post and core. 300 Newton force was applied to functional cusp of mandible 1st premolar. Results: The results were as follows: First, there was no apparent difference in the pattern of stress distribution according to the alveolar bone condition concentrate on the post middle area. Second, there was difference in pattern of stress distribution according to the core materials, gold post and core generated same than amalgam core. Third, there was no apparent difference in the pattern of stress distribution within the dentin according to the post and core materials. But a cast gold post and core generated the lowest maximum stress value, a stainless steel post generated the highest maximum stress value. Fourth, in the reduced alveolar bone model, maximum stress value is 1.5 times than that of the normal alveolar bone model. Conclusion: Within the limitations of this study, to provide minimal stress to the root with alveolar bone reduced, the post length may be as long as apical seal was not destroyed. To prevent fracture of tooth, it is rational to use gold alloy which material was good for stress distribution for post materials.
Keywords
Cast post and core; Alveolar bone support; 3-dimensional finite element study; Stress distribution;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Mattison GD. Photo elastic stress analysis of cast-gold endodontic posts. J Prosthet Dent 1982:48:407-411   DOI   ScienceOn
2 Chan RW, Bryant RW. Post-core foundations for endodontically treated posterior teeth. J Prosthet Dent 1982:48:401-406   DOI   ScienceOn
3 Loney RW, Kotowicz WE, McDowell GC. Three-dimensional photo elastic stress analysis of the ferrule effect in cast post and cores. J Prosthet Dent 1990:63:506-512   DOI   ScienceOn
4 Plasmans PJ, Visseren LG. Vrijhoef MM. Kayser AF. In vitro comparison of dowel and core techniques for endodontically treated molars. J Endod 1986:12:382-387   DOI   ScienceOn
5 Lambjerg-Hansen H, Asmussen E. Mechanical properties of endodontic posts. J Oral Rehabil 1997:24:882-887   DOI   ScienceOn
6 Morgano SM, Hashem AF, Fotoohi K, Rose L. A nationwide survey of contemporary philosophies and techniques of restoring endodontically treated teeth. J Prosthet Dent 1994:72:259-267   DOI   ScienceOn
7 Perel ML, Muroff FI. Clinical criteria for posts and cores. J Prosthet Dent 1972:28:405-411   DOI   ScienceOn
8 Yang HS, Lang LA, Molina A. Felton DA. The effects of dowel design and load direction on dowel-and-core restorations. J Prosthet Dent 2001:85:558-567   DOI   ScienceOn
9 Kantor ME, Pines MS. A comparative study of restorative techniques for pulpless teeth. J Prosthet Dent 1977:38:405-412   DOI   ScienceOn
10 Cailleteau JG, Rieger MR, Akin JE. A comparison of intracanal stresses in a post-restored tooth utilizing the finite element method. J Endod 1992:18:540-544   DOI   ScienceOn
11 Assif D, Oren E, Marshak BL, Aviv I. Photoelastic analysis of stress transfer by endodontically treated teeth to the supporting structure using different restorative techniques. J Prosthet Dent 1989:61:535-543   DOI   ScienceOn
12 Nayyar A, Walton RE, Leonard LA. An amalgam coronal-radicular dowel and core technique for endodontically treated posterior teeth. J Prosthet Dent 1980:43:511-515   DOI   ScienceOn
13 Langer B, Stein SD, Wagenberg B. An evaluation of root resections. A ten-year study. J Periodontol 1981:52:719-722   DOI   PUBMED
14 Johnson JK, Sakumura JS. Dowel form and tensile force. J Prosthet Dent 1978:40:645-649   DOI   ScienceOn
15 Yaman SD, Alacam T, Yaman Y. Analysis of stress distribution in a maxillary central incisor subjected to various post and core applications. J Endod 1998:24:107-111   DOI   ScienceOn
16 Nyman S, Lindhe J. A longitudinal study of combined periodontal and prosthetic treatment of patients with advanced periodontal disease. J Periodontol 1979:50:163-169   DOI   PUBMED
17 Pao YC, Reinhardt RA, Krejci RF. Root stresses with tapered-end post design in periodontally compromised teeth. J Prosthet Dent 1987:57:281-286   DOI   ScienceOn
18 Lovdahl PE, Nicholls JI. Pin-retained amalgam cores vs. cast-gold dowel-cores. J Prosthet Dent 1977:38:507-514   DOI   ScienceOn
19 Sun-Hyung Lee, D.D.S H-YCDDS, Soo-Young Choi.D.D.S. A survey of the fixed restorations. J Korean Acad Prosthodont 1994:32:359-367   과학기술학회마을
20 Reinhardt RA, Krejci RF, Pao YC, Stannard JG. Dentin stresses in post-reconstructed teeth with diminishing bone support. J Dent Res 1983:62:1002-1008   DOI   PUBMED   ScienceOn
21 Hoag EP, Dwyer TG. A comparative evaluation of three post and core techniques. J Prosthet Dent 1982:47:177-181   DOI   ScienceOn
22 Standlee JP, Caputo AA, Collard EW, Pollack MH. Analysis of stress distribution by endodontic posts. Oral Surg Oral Med Oral Pathol 1972:33:952-960   DOI   ScienceOn
23 Goodacre CJ, Spolnik KJ. The prosthodontic management of endodontically treated teeth: a literature review. Part I. Success and failure data, treatment concepts. J Prosthodont 1994:3:243-250   DOI   ScienceOn
24 Davy DT. Dilley GL. Krejci RF. Determination of stress patterns in root-filled teeth incorporating various dowel designs. J Dent Res 1981:60:1301-1310   DOI   PUBMED   ScienceOn