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Quintessence Int 31 (2000), No. 10     1. Nov. 2000
Quintessence Int 31 (2000), No. 10  (01.11.2000)

Page 719-728


Restoring teeth that are endodontically treated through existing crowns. Part II: Survey of restorative materials commonly used
Trautmann, Glenn / Gutmann, James L. / Nunn, Martha E. / Witherspoon, David E. / Shulman, Jay D.
Objective: A survey was undertaken to categorize the materials used for the restoration of endodontic access openings through complete-coverage crowns after completion of nonsurgical root canal treatment.
Method and materials: The survey package consisted of a cover letter stating instructions, rationale, and purpose for the questionnaire, a questionnaire of 8 short-answer questions, and a stamped, self-addressed envelope. A randomized sample of active dentists (300 general practitioners, 300 prosthodontists, and 300 endodontists), was selected. Collected data were analyzed with the chi-square analysis.
Results: Most general practitioners (93%), endodontists (61%), and prosthodontists (75%) reported that they frequently or always permanently restore teeth after nonsurgical root canal treatment. Empress was the all-ceramic system used most commonly by prosthodontists (42%) and general practitioners (38%). A statistically significant difference in restorative material preference was found (P < 0.0001), depending on the type of crown used.
Conclusion: Amalgam alone and in combination with bonding agents are materials of choice for restoration of access openings through all-metal complete crowns, while resin composite is the choice for all types of complete crowns involving porcelain. Endodontists preferred other materials.

Keywords: amalgam, bonding agent, complete-coverage crown, glass-ionomer cement, nonsurgical root canal treatment, resin composite, survey