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VOLUME 7 , ISSUE 4 ( September, 2006 ) > List of Articles


Radiographic Assessment of Post-retained Crowns in an Adult Jordanian Population

Khaled Q. Al-Hamad, Mohamed Al-Omari, Ahed Al-Wahadni, Azmi Darwazeh

Citation Information : Al-Hamad KQ, Al-Omari M, Al-Wahadni A, Darwazeh A. Radiographic Assessment of Post-retained Crowns in an Adult Jordanian Population. J Contemp Dent Pract 2006; 7 (4):29-36.

DOI: 10.5005/jcdp-7-4-29

License: CC BY-NC 3.0

Published Online: 01-01-2008

Copyright Statement:  Copyright © 2006; The Author(s).



The objective of this study was to radiographically assess and compare the quality of post-retained crowns fabricated at the Dental Health Centre of the Jordan University of Science & Technology (JUST).

Methods and Materials

Study data were collected in 2002 from existing dental records for all patients receiving treatment with post-retained crowns between October, 1997 and June, 1999. The posts were assessed radiographically to evaluate various aspects of the quality of post-retained crowns. All 129 posts were fabricated in the dental school.


The most-frequently restored teeth were the maxillary incisors (38.8%). Sixty-two percent of the posts were tapered, while 38% were parallel-sided. The mean length of the posts was 0.95 mm (SD 0.41) with a range between 0.22-2.85 mm. Caries was diagnosed radiographically in 10.8% of cases with lesions located on root surfaces in 64.3% of them, while 35.7% of lesions were within the root canal. Three posts (2.3%) were deviated from the line of the root canal in the mesio-distal plane. No evidence of root filling was found in 2.3% of the cases. In the remainder of teeth 15.5% had gutta percha extended to the radiographic apex of the tooth, while 59.7% fell 0.5-1 mm short of the radiographic apex. Gutta-percha was extruded beyond the apex in 22.5% of the teeth. Space between the end of the post and the root filling was found in 22.2%. The percentage of canals with apparently completely healthy periapical tissue was 51.2%. In the rest of the cases 34.8% had areas of radiolucency at or near the root apices and 14% demonstrated widening of the periodontal space around the root apex. Root resection had been completed in 2.3% cases. Signs of external resorption were apparent in one case (0.78%).


The standards of the treatment of the endodontically treated teeth made at the dental hospital were satisfactory but could be improved by a controlled academic supervisory environment and a strict scientific approach to fixed prosthodontics within the dental school.


Al-Hamad KQ, Al-Omari M, Al-Wahadni A, Darwazeh A. Radiographic Assessment of Post-retained Crowns in an Adult Jordanian Population. J Contemp Dent Pract 2006 September;(7)4:029-036.

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  1. The restoration of endodontically treated teeth, single-rooted teeth with cast or direct posts and cores: A systemic review. J Prosthet Dent 2002;87:380-6.
  2. Trends in indirect dentistry: 2. post and core restorations. Dent Update 2005 May;32(4):190-2, 194-6, 198.
  3. Post and core systems, refinements to tooth preparation and cementation. Br Dent J 2005 May 14;198(9):533-41. Review.
  4. In vitro fracture resistance of endodontically treated central incisors with varying ferrule heights and configurations. J Prosthet Dent 2005 Apr;93(4):331-6.
  5. Crowns and extra-coronal restorations: endodontic considerations: the pulp, the root-treated tooth and the crown. Br Dent J 2002 Mar 23;192(6):315-20, 323-7. Review.
  6. Clinical application of a fiber-reinforced post system. J Endod 2001 Feb;27(2):132-3.
  7. 5-year follow-up of a prospective clinical study on various types of core restorations. Int J Prosthodont 2005 Jan-Feb;18(1):34-9.
  8. Restoration of the endodontically treated tooth. Dent Clin North Am 2002 Apr;46(2):367-84. Review.
  9. Esthetic post-and-core treatment. Dent Clin North Am 2001 Jan;45(1):103-16.
  10. Determination of moisture content of vital and pulpless teeth. Oral Surg Oral Med Oral Pathol 1972;34:66-67.
  11. Punch shear testing of extracted vital and endodontically treated teeth. J Biomech 1983;16:841-848.
  12. Effect of moisture content and endodontic treatment on some mechanical properties of human teeth. J Endod 1991;18(5):209-215.
  13. Are endodontically treated teeth more brittle? J Endod 1992;18:332-335.
  14. Reduction in tooth stiffness as a result of endodontic restorative procedures. J Endod 1989;15:512-516.
  15. On cantilever loading of vital and non-vital teeth. Acta Odontol Scand 1986;44:271-277.
  16. Fundamentals of fixed prosthodontics. Chicago: Quintessence Publishing Co; 1997.p.194-206.
  17. The failure of retainers in bridge prostheses - an analysis of 2000 retainers. Br Dent J 1970;128:117-24.
  18. Post-retained crown failure: A survey. Dental Update 1982;9:221-34.
  19. A clinical survey of failed post-retained crowns. Br Dent J 1988;165:95-7.
  20. Clinical complication in fixed prosthodontics. J Prosthet Dent 2003;90:31-41.
  21. Foundation restorations in fixed Prosthodontics: Current knowledge and future needs. J Prosthet Dent 1999;82:643-57.
  22. Effect of surface design on retention of dowels cemented with a resin. J Prosthet Dent 1993 Nov;70(5):403-5.
  23. The retentive and stress-distributing properties of a threaded endodontic dowel. J Prosthet Dent 1980 Oct;44(4):398-404.
  24. Retention of posts cemented with various dentinal bonding cements. J Prosthet Dent 1994 Dec;72(6):591-4.
  25. Effect of length and diameter of tapered posts on the retention. J Oral Rehabil 2002 Jan;29(1):28-34.
  26. The use of reinforced composite resin cement as compensation for reduced post length. J Prosthet Dent 2001 Sep;86(3):304-8.
  27. Retention of three endodontic posts cemented with five dental cements. J Prosthet Dent 1998 May;79(5):520-5.
  28. In vitro evaluation of the retention of composite fiber and stainless steel posts. J Prosthodont. 2002 Mar;11(1):25-9.
  29. Retention of posts with resin, glass ionomer and hybrid cements. J Dent 1998 Sep;26(7):599-602.
  30. A radiographic study of post-retained crowns in patients attending a dental hospital. Br Dent J 1993;174:197-201.
  31. Radiographic observations of post crowns: some problems and solutions. Dental Update 1995:370-2.
  32. Effect of an adhesive resin luting agent on the dowel-head retention of three different core material. J Prosthet Dent 2005;93:439-45.
  33. Consensus Report of the European Society of Endodontology on Quality Guidelines for Endodontic Treatment. Inter Endodo J 1994;27:115-124.
  34. Clinically significant factors in dowel design. J Prosthet Dent 1984;52:28-35.
  35. Root canal retained restorations: 1. General considerations and custom-made casts posts and cores. Dental Update 1990;17:183-8.
  36. Restoration of the endodontically treated tooth. Dent Clin N Am 2002;46:367-384.
  37. Endodontically treated teeth as abutments. J Prosthet Dent 1984;53:631-6.
  38. Intracoronl reinforcement and coronal coverage: a study of endodontically treated teeth. J Prosthet Dent 1984;51:780-4.
  39. Effect of post preparation on the apical seal. J Prosthet Dent 1984;51:785-9.
  40. Operative procedures on mutilated endodontically treated teeth. J Prost Dent 1961;11:973.
  41. Restoration of the endodontically treated teeth. Chicago: Quintessence Publishing Co;1982.
  42. Contemporary fixed prosthodontics. Missouri: Mosby Inc, 2001.
  43. Post/cores in Dentistry: A Review. J Irish Dent Assoc 1991;40:69-77.
  44. The restoration of teeth. Oxford: Blackwell Scientific Publications; 1992. p.210-20.
  45. Dentine stresses in post- reconstructed teeth with diminishing bone support. J Dent Res 1983;62:1002-8.
  46. Retention of endodontic dowels: Effects of cement, dowel length, diameter and design. J Prosthet Dent 1978;39:401-5.
  47. Average maximum post lengths in endodontically treated teeth. J Prosthet Dent 1984;52:489-91.
  48. Relationship between retaining force of inlays and film thickness of zinc oxyphosphate cement. J Dent Res 1960;39:756 Abst. M17.
  49. Retention of post crowns. Br Dent J 1968;124:63-9.
  50. Effects of cement type and thickness on retention of serrated pins. J Dent Res 1975;54:227-31.
  51. Retention of Dowels using a composite as a cementing medium. J Prosthet Dent 1982;48:292-6.
  52. Post and core restoration of endodontically treated teeth. Current Opinion in Dentistry 1992;17:99-107.
  53. Evaluation and restoration of endodontically treated posterior teeth. J Am Dent Assoc 1976 Sep;93(3):597-605. Review.
  54. Failure if endodontically treated teeth: classification and evaluation. J Endodo 1991;17: 338-42.
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