Abstract Aim: To investigate the influence of two cordless techniques on periodontium in comparison with conventional cords. Material and Methods: Dental students ( n =60) healthy gingival conditions were recruited – an expanding poly vinyl siloxane material (Magic Foam Cord ® ), a paste‐like (Expasyl retraction cord (Ultrapak ) applied buccal aspects three premolars each subject. Probing depth, clinical attachment level, index (GI), plaque index, mobility, bleeding, sensitivity assessed at...

To compare the accuracy of intraoral scanning (IOS) edentulous arch with hybrid protocol cast digitization (CD), and to investigate effect type area on trueness.Participants that were in both arches recruited. Two impression protocols used; IOS as test an device (TRIOS 4; 3Shape, Denmark), CD control, including tracing compound (TRACING STICKS; Kemdent, UK) for border molding, polyvinyl siloxane (Hydrorise Monophase; Zhermack, Italy) impression, a laboratory scanner (ceramill® map400,...

Abstract Purpose To evaluate the fit of single crowns fabricated using conventional, digital, or cast digitization methods. Materials and Methods One subject with a peg‐shaped maxillary lateral incisor was selected in this study. Tooth preparation for an all‐ceramic crown performed 10 conventional poly(vinyl siloxane) impressions, digital impressions intraoral scanner were made. Each working scanned laboratory scanner. Four groups tested Group 1: impressions. 2: scans. 3: scans 4: direct For...

This review aimed to map taxonomy frameworks, descriptions, and applications of immersive technologies in the dental literature.

Abstract Purpose To investigate the feasibility and accuracy (trueness precision) of facial scanning virtual patient representation (VPR). Materials Methods One participant was recruited informed consent obtained. VPR performed 30 times with a custom fabricated intraoral scan body (ISB). Thirteen adhesive markers were added to face as an extraoral (ESB). Two scans obtained for each using infra‐red laser accessory sensor (Structure sensor; Occipital Inc) mounted on computer tablet (iPad Pro;...

Abstract Purpose To investigate the effect of different milling protocols for ceramic materials on trueness and precision milled crowns. Materials Methods A definitive impression from a patient requiring crown was used to fabricate forty glass crowns (VITABLOCS mark II, Vita Zahnfabrik) with wet, hard protocol, 40 zirconia (inCoris TZI, Dentsply, Sirona) dry, soft using 5‐axis machine (inLab MC X5; Dentsply Sirona). Trueness areas were evaluated 3D evaluation software (Geomagic Control X,...

Abstract Aim The aim of this study was to investigate the relationship between patients’ oral health–related quality life, satisfaction with their dentition, and personality profiles. Methods Materials Eighty-four patients (30 males 54 females; mean age 31.9±12.7 years) seeking routine dental treatment were recruited for study. A “Dental Impact on Daily Living” (DIDL) questionnaire used assess impact daily living. An “Oral Health Profile” (OHIP) measure self-reported discomfort, disability,...

Abstract Purpose To evaluate the accuracy of fit metal, lithium disilicate, and zirconia crowns, which were produced using different manufacturing techniques. Materials Methods Ten patients in need a molar crown recruited. Eight crowns fabricated for each patient: 2 zirconia, 3 disilicate (e.max), metal‐ceramic conventional, conventional/digital, digital Marginal, axial, occlusal gaps measured replica technique. Replicas sectioned mesiodistally buccolingually observed under stereomicroscope....

To evaluate surface roughness and topography of different zirconia-based restorations at various steps finishing polishing.Seventy-five zirconia discs were fabricated divided into 3 layered 2 monolithic groups: conventional (VM9; Vita), pressed (PM9; digital (TriLuxe Forte; opaque (Ceramill Zi; Amann Girrbach), translucent (Zolid FX; Girrbach). Surface testing (Ra, Rz) scanning electron microscopy performed the glazed, unglazed, finished, polished, super-polished, super-polished with diamond...

The long-term success of ceramic laminate veneers (CLVs) is influenced by the marginal and internal fit restorations. However, studies comparing CLVs using different intraoral scanners or indirect digitization technique are lacking. purpose this study was therefore to assess CAD/CAM-milled digitalization technique. An ivorine typodont maxillary left-central incisor prepared; tooth neighboring teeth were scanned used as a template print ninety 3D partial models. Thereafter, (N = 90) milled...

To investigate the effects of background color on shade reproduction using CAD/CAM zirconia and lithium disilicate ceramics.A plastic tooth was prepared for an all-ceramic crown scanned. Tooth-shaped light dies were manufactured. Full-contour crowns milled from translucent (ZT) low translucency disilicates (E [LT]). Copings opaque (Z) medium opacity (E[MO]) ceramics layered with veneering porcelain to full contour. Metal copings used produce a dark background. Specimens divided into 8 groups...

Objectives: To evaluate the effects and interactions between cement type, abutment height surface roughness on bond strength of cemented implant restorations. Materials methods: One hundred sixty metal copings were fabricated divided into 16 groups 10 samples each. Copings 4 6 mm Alfa-Gate® abutment, using four types cements: zinc phosphate (ZNP), glass ionomer (GI), oxide eugenol (ZOE) with or without 15% vaseline. removed a universal testing machine strengths recorded. All abutments...

A preliminary clinical report of implant placements with 2 immersive reality technologies is described: augmented head mounted display and mixed a tablet PC. Both realities are promising could facilitate innovative dental applications. However, requires further development for optimization.

To evaluate the effect of repetitive milling on surface roughness ceramic crowns.Twenty feldspathic crowns (VITABLOCS Mark II; Vita Zahnfabrik, Bad Säckingen, Germany) milled with hard protocol, and 20 zirconia (5Y-TZP, inCoris TZI; Dentsply Sirona, York, PA) soft using a 5-axis machine (inLab MC X5; Sirona) were investigated. Atomic force microscopy (SPM SmartSPM™-1000) was used for measurements (Ra, RMS). Pearson correlation between bur deterioration percentage as provided by software...

To assess, clinically, patient satisfaction of additively manufactured complete dentures with intraoral scanning and hybrid cast digitization in comparison conventional dentures.

The objective of this study was to radiographically assess and compare the quality post-retained crowns fabricated at Dental Health Centre Jordan University Science & Technology (JUST).Study data were collected in 2002 from existing dental records for all patients receiving treatment with between October, 1997 June, 1999. posts assessed evaluate various aspects crowns. All 129 school.The most-frequently restored teeth maxillary incisors (38.8%). Sixty-two percent tapered, while 38%...

Abstract Purpose To determine the effect of type base metal alloy, opaque thickness, and repeated firing on color ceramic restorations. Materials Methods Four nickel chromium four cobalt were selected with one noble alloy as a control. Ten discs (16 mm 0.5 mm) prepared for each group. Color specimens measured using spectrophotometer calculated CIEDE 2000 formula (Δ L ′, Δ C H E ′) between experimental groups control at six stages porcelain constructions: 0.1 0.3 mm, dentine, enamel, glaze,...

No documentation in the literature about taper of cast posts. This study was conducted to measure degree posts taper, and evaluate its suitability based on anatomy aspects common candidate teeth for post reconstruction.Working casts posts, prepared using Gates Glidden drills, were collected. Impressions spaces made polyvinyl siloxan putty/wash technique. Digital camera with a 10' high quality lens used capturing two digital images each impression; one Facio-Lingual (FL) other Mesio-Distal...