Effect of zirconia surface conditioning before glazing on the wear of opposing enamel: an in vitro study.

Objectives: This in vitro study aimed to evaluate the wear of natural teeth opposing 3 mol% yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP) with different surface conditions.

Materials And Methods: Sixty 3Y-TZP specimens were randomly assigned to six groups (n = 10), differing in surface condition. In three groups, the samples underwent glazing-with the glaze applied to roughened (i.

Non-oral manifestations in adults with a clinical and molecularly confirmed diagnosis of periodontal Ehlers-Danlos syndrome.

Periodontal Ehlers-Danlos Syndrome (pEDS) is a rare autosomal dominant type of EDS characterised by severe early-onset periodontitis, lack of attached gingiva, pretibial plaques, joint hypermobility and skin hyperextensibility as per the 2017 International EDS Classification. In 2016, deleterious pathogenic heterozygous variants were identified in and , which encode components of the complement system. Individuals with a clinical suspicion of pEDS were clinically and molecularly assessed through the National EDS Service in London and Sheffield and in genetic services in Austria, Sweden and Australia.

Oral characteristics in adult individuals with periodontal Ehlers-Danlos syndrome.

Aim: Periodontal Ehlers-Danlos syndrome (pEDS) is a monogenic type of Ehlers-Danlos syndrome characterized by periodontal destruction at a young age. The present study aimed to document the oral phenotype of pEDS based on prospective clinical investigations.

Materials And Methods: Thirty-five adult individuals from 13 families with a clinically and genetically confirmed diagnosis of pEDS underwent a systematic oral assessment.

Comparison between stone and digital cast measurements in mixed dentition : Validity, reliability, reproducibility, and objectivity.

Purpose: To assess the validity, reliability, reproducibility, and objectivity of measurements on stone casts of patients with mixed dentitions compared to measurements on three-dimensional (3D) digital models derived from surface scans of the stone casts.

Methods: Pairs of stone casts of 30 young patients in their mixed dentition stage were included and processed into 3D digital models using an intraoral scanner (iTero Element 2; Align Technology, San Jose, CA, USA). Then an experienced and an inexperienced examiner independently performed measurements of five defined parameters, each in triplicate, both on the digital models with analysis software (OnyxCeph3™; Image Instruments, Chemnitz, Germany) and on the original casts with a vernier calliper.

Oral manifestations of Ehlers-Danlos syndromes.

Ehlers-Danlos syndromes (EDS) are a group of inherited connective tissue disorders. Patients with EDS exhibit distinct pathologies of the teeth and the oral cavity. Here, we summarize the current knowledge in the various EDS types, in particular regarding severe changes in oral health-related quality of life, the differential emergence of periodontitis, characteristic yet highly cumbersome dental manifestations, apparent anomalies of oral soft tissues, and relevant issues related to dental implantology.