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Dental Materials : Official Publication... Nov 2004Internal and external bleaching procedures utilizing 3-35% hydrogen peroxide solutions or hydrogen peroxide releasing agents, such as carbamide peroxide or sodium... (Review)
Review
OBJECTIVE
Internal and external bleaching procedures utilizing 3-35% hydrogen peroxide solutions or hydrogen peroxide releasing agents, such as carbamide peroxide or sodium perborate, can be used for whitening of teeth. The purpose of the review article was to summarize and discuss the available information concerning the effects of peroxide releasing bleaching agents on dental restorative materials and restorations.
SOURCES
Information from all original scientific full papers or reviews listed in PubMed or ISI Web of Science (search term: bleaching AND (composite OR amalgam OR glass ionomer OR compomer OR resin OR alloy) were included in the review.
DATA
Existing literature reveals that bleaching therapies may have a negative effect on physical properties, marginal integrity, enamel and dentin bond strength, and color of restorative materials as investigated in numerous in vitro studies. However, there are no reports in literature indicating that bleaching may exert a negative impact on existing restorations requiring renewal of the restorations under clinical conditions.
CONCLUSION
Bleaching may exert a negative influence on restorations and restorative materials. Advice is provided based on the current literature to minimize the impact of bleaching therapies on restorative materials and restorations.
Topics: Composite Resins; Dental Amalgam; Dental Bonding; Dental Leakage; Dental Materials; Dental Porcelain; Dental Restoration, Permanent; Dentin Sensitivity; Glass Ionomer Cements; Humans; Methylmethacrylates; Peroxides; Tooth Bleaching; Zinc Oxide-Eugenol Cement
PubMed: 15451241
DOI: 10.1016/j.dental.2004.04.002 -
British Dental Journal Oct 1999To conduct a systematic review of the literature on the longevity of routine dental restorations in permanent posterior teeth, and to identify and examine factors... (Meta-Analysis)
Meta-Analysis
OBJECTIVE
To conduct a systematic review of the literature on the longevity of routine dental restorations in permanent posterior teeth, and to identify and examine factors influencing its variability.
METHOD
Accepted guidelines were followed. An advisory group oversaw the project. Simple Class I and Class II amalgam, composite resin, glass ionomer and cast gold restorations were covered. Comprehensive searching of electronic databases, hand-searching, and location of 'grey' literature, generated 124 research reports. Those considered relevant were assessed for validity and quality according to agreed criteria. The analysis was descriptive.
RESULTS
Eight of 58 relevant research reports were categorised, according to agreed criteria, as being of satisfactory validity and quality. They suggested that 50% of all restorations last 10 to 20 years, although both higher and lower median survival times were reported. The findings were supported by the totality of studies reviewed. However, variability was substantial. Restoration type, materials, the patient, the operator, the practice environment and type of care system appeared to influence longevity.
CONCLUSIONS
Many studies were imperfect in design. Those considered to be the most appropriate for analysis were too limited to undertake a formal statistical exploration. Therefore there remains a need for definitive randomised controlled trials of restoration longevity, of sound design and adequate power, employing standardised assessments and appropriate methods of analysis.
Topics: Bicuspid; Composite Resins; Dental Amalgam; Dental Cavity Preparation; Dental Materials; Dental Restoration, Permanent; Glass Ionomer Cements; Gold Alloys; Humans; Molar; Reproducibility of Results; Survival Analysis; Time Factors
PubMed: 10716002
DOI: 10.1038/sj.bdj.4800298a1 -
Journal of the American Dental... Mar 2000The authors evaluated the treatment efficacy of preformed metal crowns, or PMCs, vs. amalgam restorations in primary molars by means of a literature review and... (Comparative Study)
Comparative Study Review
BACKGROUND
The authors evaluated the treatment efficacy of preformed metal crowns, or PMCs, vs. amalgam restorations in primary molars by means of a literature review and meta-analysis.
TYPES OF STUDIES REVIEWED
From a literature search, the authors selected clinical studies that evaluated treatment with PMCs vs. amalgam control restorations in primary molars and provided data against which treatment outcomes could be compared.
RESULTS
Ten studies with durations ranging from 1.6 to 10 years fulfilled the selection criteria. Their failure rates, based on need for subsequent treatment or retention of the restoration at final evaluation, ranged from 1.9 to 30.3 percent for PMCs and 11.6 to 88.7 percent for amalgam restorations. Overall, PMCs demonstrated greater longevity and reduced retreatment need compared with amalgam control restorations. The odds ratio for all studies fell within the boundary favoring treatment with PMCs.
CLINICAL IMPLICATIONS
Analysis of the literature, though mainly retrospective studies, demonstrated evidence of a more favorable outcome for PMCs than for amalgam restorations in primary molars requiring multisurface restorations.
Topics: Crowns; Dental Amalgam; Dental Restoration Failure; Dental Restoration, Permanent; Humans; Molar; Time Factors; Treatment Outcome
PubMed: 10715925
DOI: 10.14219/jada.archive.2000.0177