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Outcome Evaluation of Ceramic Crowns Using Two Different Dental Cements

NCT00591942 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 36

Last updated 2018-03-08

Study results available
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Summary

The restoration of indirect partial and full coverage restorations in dentistry necessitates the use of a luting agent to act as a means of mechanical and potentially, chemical retention of the restoration. Upon the introduction of the first generation of glass Ionomer cements for use as a luting agent, an elevated short-term post operative hypersentivity was reported. In part, this adverse event was considered to be due to a desiccating effect of the cement as water is utilized in the setting reaction and thus a desiccation of the dentinal tubules was proposed as a potential mechanism leading to disruption of the neurosensory odontoblasts. Further materials development in the field of dental cement luting agents has lead to the introduction to the current market of resin formulations that have an alternative mechanism of setting. Consequently, there are anecdotal reports of a decrease in the incidence of post-operative sensitivity but no comparison with the effect of conventionally used dentin desensitizing agents as a part of the bonding process of the restoration.

The purpose of this trial is a single blinded parallel design randomized clinical trial to evaluate the perceived incidence of post-operative sensitivity when full coverage all ceramic crowns or short-span three unit fixed partial dentures (dental bridge) is fabricated in the posterior part of the mouth. The dental crowns or bridges will be bonded with conventional glass ionomer cement or a Urethane dimethacrylate / Bis-GMA composite resin dental cement. Outcome measures will be both objective clinical criteria and the use of a calibrated pain survey instrument.

Conditions

  • Sensitivity to Dental Cements
  • Dental Crowns
  • Dental Three-unit Bridges

Interventions

DEVICE

Full ceramic crowns or 3-unit fixed partial dentures.

Subjects who met the inclusion/excluson criteria received two ceramic crowns or one three-unit dental bridge on posterior teeth. The crowns and dental bridge were cemented using two different dental adhesives. Follow-up to assess sensitivity of the crowns/bridges occur at 24 hrs. and 1 week post seating by telephone. Clinical visits to assess sensitivity and the integrity of the crowns/bridges occur at 6, 12, 18 and 24 months post seating of the restorations.

Sponsors & Collaborators

  • Clark Stanford

    lead OTHER

Principal Investigators

  • Clark Stanford, DDS, PhD · University of Iowa

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2004-11-30
Primary Completion
2009-12-31
Completion
2009-12-31

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00591942 on ClinicalTrials.gov