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ePaper created 2016-12-07, 11:04:42 | version 1.38.0
19 dentistry 4_2016 cosmetic case report _ shaping the gingival contour contour of the restoration will not influence the gingival contour.4,5 However, in the case of cov- ering the original colour of the abutment tooth, forming the ferrule, and/or improving retention and resistance form, the crown margin can be placed subgingivally.6 Because the sulcular depth around a healthy natural tooth is around 1 mm, the cervical margin of the crown is usually lo- cated 0.5 mm below the free gingival margin.7,8 Thus, unlike an implant-supported crown, a tooth-supported crown can hardly influence the gingival contour. However, when the sulcular depth of the abutment is sufficiently deep, as with a thick gingival biotype, it is possible to sculpt the gin- gival contour around the abutment teeth using provisional resin crowns. The treatment process will be demonstrated in this article through a typical case with a sev- en-year retrospective review. _Case report A 48-year-old female patient whose general health condition was good, was referred to the Peking University Hospital of Stomatology in Beijing in China in 2008. The patient’s main con- cern was the restoration of her maxillary anteri- or teeth that had been compromised by severe dental caries and treated with root canal therapy. Fig. 5_The inclined axis of the tooth would have resulted in an unfavourable aesthetic outcome. Fig. 6_The labial side of the restorations would be shifted labially. Fig. 7_The probing depth of the gingival sulcus around the maxillary left central incisor was 3 mm. Fig. 8_The probing depth of the gingival sulcus around the maxillary right central incisor was 1 mm. Fig. 9_Frontal view of the pre-op model. Fig. 10_The gingival contour was marked on the model. Fig. 5 Fig. 6 Fig. 7 Fig. 9 Fig. 8 Fig. 10