Endodontic and aesthetic management of a conoid tooth with type IIIA dens invaginatus.

Background: Dens invaginatus is a dental developmental abnormality caused by an infolding of the enamel organ into the adjacent dental papilla before the calcification of the dental tissues. The clinical presentation of dens invaginatus varies according to its severity, from mild forms, in which we might find a deeper than normal cingulum pit, to severe cases, in which there is a pronounced infolding reaching the apical foramen. The very nature of the invagination favours the contamination from the oral environment to the pulp space and the onset of caries.

Bulk filling of Class II cavities with a dual-cure composite: Effect of curing mode and enamel etching on marginal adaptation.

Objectives: This study attempted to find a simple adhesive restorative technique for class I and II cavities on posterior teeth.

Study Design: The tested materials were a self-etching adhesive (Parabond, Coltène/Whaledent) and a dual-cure composite (Paracore, Coltène/Whaledent) used in bulk to restore the cavities. Class II MO cavities were performed and assigned to 4 groups depending on the orthophosphoric acid (H3PO4) conditioning of enamel and polymerization method used (chemical or dual).

Failure analysis of adhesive restorations with SEM and OCT: from marginal gaps to restoration loss.

Objective: The objective of this study was to analyse the failure mode of adhesive interfaces by comparing OCT and scanning electron microscope (SEM) analysis of class V restoration margins located on enamel and dentin.

Materials And Methods: Three groups were tested that differed in the application of a 3-step etch-and-rinse adhesive system (OptiBond FL) prior to cavity filling with restorative composite resin (Clearfil AP-X). After tooth restoration and polishing, the samples were loaded in a fatigue machine, and adhesive interfaces were evaluated with OCT and SEM.

Full-mouth composite rehabilitation of a mixed erosion and attrition patient: a case report with v-shaped veneers and ultra-thin CAD/CAM composite overlays.

Loss of tooth substance has become a common pathology in modern society. It is of multifactorial origin, may be induced by a chemical process or by excessive attrition, and frequently has a combined etiology. Particular care should be taken when diagnosing the cause of dental tissue loss, in order to minimize its impact.

Self-etching aspects of a three-step etch-and-rinse adhesive.

Purpose: The purpose of this study is to assess the marginal adaptation of cavities restored with a three-step etch-and-rinse adhesive, OptiBond FL (OFL) under different application protocols.

Materials And Methods: Twenty-four class V cavities were prepared with half of the margins located in enamel and half in dentin. Cavities were restored with OFL and a microhybrid resin composite (Clearfil AP-X).