Removal of Porcelain Veneers Aided by a Fluorescing Luting Cement |
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| Authors: | SHAUN A WHITEHEAD PHD MSC: BDS LDS FDS MRD RCS En ASIF AYA BDS TATIANA V MACFARLANE BSc DAVID C WATTS PHD BSC FINSTP FRSC FADM NAIRN HF WILSON PHD BDS FDS DRD RCS ED |
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| Institution: | Clinical Academic Croup of Restorative Dentistry, Unit of Operative Dentistry and Endodontology, University Dental Hospital of Manchester, Manchester, UK;Private Practice, Sulford, Manchester, UK;Turner Dental School, The University of Manchester, Manchester, UK;Clinical Academic Group of Restorative Dentistry, Unit of Biomaterials Science, University Dental Hospital of Manchester, Manchester, UK;Clinical Academic Group of Restorative Dentistry, University Dental Hospital of Manchester, Manchester, UK |
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| Abstract: | Purpose: Porcelain veneers are a safe and effective treatment modality for selected teeth that have poor esthetics. However, removal of porcelain veneers that have failed may be time‐consuming and involve considerable removal of sound tooth structure adjacent to the veneer. The aim of this study was to evaluate a novel method of porcelain laminate veneer removal by incorporating a fluorescent dye into the luting cement that allows the practitioner to visualize the cement on the tooth and remove the veneer without causing residual damage to the adjacent tooth substance. Materials and Methods: Porcelain veneers were luted on extracted teeth with a luting cement modified with a fluorescing agent. Faculty teaching staff and final year dental undergraduates were asked to remove the veneers with the aid of a curing light to render the luting cement visible by fluorescing. They were then asked to compare the removal of comparable veneers without this visual aid and to complete a standard questionnaire. The depth of cure of the conventional and modified cements was measured using a penetrometer. Results: Results of the questionnaire indicated that the operators found removing the veneer cemented with the modified (fluorescing) cement considerably easier than removing the veneer cemented with the conventional cement. Microscopy indicated that more damage was caused to the underlying tooth during removal of conventionally cemented veneers. The incorporation of the dye into the cement reduced the depth of cure from 4.238 mm (SD = 0.025) to 3.761 mm (SD = 0.096). CLINICAL SIGNIFICANCE The fluorescent cement was considered to be superior to conventional cements in its ease of visibility, and as a consequence, veneers cemented with the fluorescing cement are easier to remove. The fluorescing dye significantly reduced the depth of cure, but this may not be clinically significant, because of the small thickness of cement employed when luting adhesive restorations. The use of such fluorescing materials may not be restricted to a luting cement for veneers but may also be incorporated into bases and lining materials so they can be visualized on removal of tooth‐colored restorations, to prevent further tooth destruction. |
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