The marginal fit of lithium disilicate crowns: Press vs. CAD/CAM

Abstract: This study aimed to compare the vertical marginal gap of teeth restored with lithium disilicate crowns fabricated using CAD/CAM or by pressed ceramic approach. Twenty mandibular third molar teeth were collected after surgical extractions and prepared to receive full veneer crowns. Teeth were optically scanned and lithium disilicate blocks were used to fabricate crowns using CAD/CAM technique. Polyvinyl siloxane impressions of the prepared teeth were made and monolithic pressed lithium disilicate crowns were fabricated. The marginal gap was measured using optical microscope at 200× magnification (Keyence VHX-5000, Japan). Statistical analysis was performed using Wilcoxon test. The lithium disilicate pressed crowns had significantly smaller (p = 0.006) marginal gaps (38 ± 12 μm) than the lithium disilicate CAD/CAM crowns (45 ± 12 μm). This research indicates that lithium disilicate crowns fabricated with the press technique have measurably smaller marginal gaps compared with those fabricated with CAD/CAM technique within in vitro environments. The marginal gaps achieved by the crowns across all groups were within a clinically acceptable range.

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Oral health related quality of life among pregnant women: a randomized controlled trial

Abstract: The aim of the present study was to compare negative impacts of oral conditions in Oral Heath Related Quality of Life (OHRQoL) assessed by the Oral Health Impact Profile-14 (OHIP-14) scores in pregnant women receiving or not comprehensive periodontal treatment. This randomized controlled clinical trial included pregnant women aged between 18 and 35 years old. Participants were randomized in a test group with 96 and a control group with 114 women. Patients in the test group received comprehensive periodontal treatment, supra and subgingival scaling and root-planning and periodontal maintenance appointments. The OHIP-14 was applied before and after treatment. The primary outcome was changes in OHIP-14 scores after follow-up period. The impact of having received or not comprehensive periodontal treatment on the change of the OHIP-14 scores was also investigated. Both groups showed significant reduction in OHIP-14 scores and effect size for the test group was 0.60 and 0.36 for the control group. Multinomial logistic regression analysis showed that participants of the control group had 5.9-fold odds (CI 95% 1.88-18.52) of worsening in OHIP-14 scores and their perception of oral conditions in relation to test group. Comprehensive periodontal treatment during pregnancy can reduce the negative impacts in OHRQoL.

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Aesthetic reconstruction of retroauricular keloid: Creating a keystone flap from the mastoid-helix area

Abstract

Advances in aesthetic rhinoplasty using conchal cartilage grafts have led to a high occurrence of retroauricular keloids. The purpose of this study is to introduce our surgical experiences using a keystone flap in retroauricular keloids following conchal cartilage grafts. The present study is a retrospective review of patients with pathologically confirmed retroauricular keloids following conchal cartilage grafts. These cases were surgically excised and we covered the defect with a keystone flap followed by one-time steroid injection at postoperative day 14 and silicone gel sheeting application for 3 months. Treatment outcome was recorded as recurrence or non-recurrence. In all patients, a follow-up period of minimum 12 months was required. Of these patients, 90.0% had successful treatment of their auricular keloids, whereas 10.0% had recurrences. The postoperative course was uneventful. In conclusion, our aesthetic reconstruction using a keystone flap created from the mastoid-helix area is a useful treatment strategy in terms of retroauricular keloids following conchal cartilage grafts.

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Computerbasierte Testung neurokognitiver Aspekte im Rahmen der audiologischen Diagnostik

Laryngo-Rhino-Otol
DOI: 10.1055/s-0043-124972

Hintergrund Im Hinblick auf den demographischen Wandel der Gesellschaft gewinnen in der Hörrehabilitation neurokognitive Fähigkeiten immer mehr an Bedeutung. Fragestellung Ziel der Studie war es zu untersuchen, inwiefern eine neurokognitive Testung mittels PC-gestützter Aufgaben zur Evaluation der unterschiedlichen Bereiche der Kognition auch für ältere Patienten mit und ohne Hörstörung geeignet ist und wie sich diese in den klinischen Alltag des HNO-Arztes integrieren lässt. Patientenbeschreibung 171 Patienten ≥ 50 Jahren mit und ohne eine beidseitige Hörbeeinträchtigung wurden eingeschlossen: n = 90 im Alter zwischen 50 und 64 Jahren (57,0 ± 4,5) und 81 Ältere ab 65 (72,5 ± 5,4). Methode Eine computerbasierte Testung mit rein visuellen Instruktionen beinhaltete neben der Aufmerksamkeit, der Verarbeitungsgeschwindigkeit, dem Kurz- und Langzeitgedächtnis auch exekutive Funktionen. Zuvor erfolgte ein Probedurchgang unter Anleitung einer geschulten Mitarbeiterin. Ergebnisse Auch wenn die Testung unabhängig von Alter oder Hörstatus in allen Fällen eigenständig möglich war, benötigten Hörgeschädigte 15 Minuten länger zur Durchführung und beurteilten diese als anstrengender als Hörgesunde (71 % versus 63 %). Patienten mittleren Alters sahen die Durchführbarkeit für Menschen des höheren Lebensalters mit 30 % signifikant (p = 0,02) kritischer als die betroffene Altersgruppe selbst (10 %). Schlussfolgerung Eine umfassende kognitive Testung älterer Schwerhöriger mit computerbasierten Aufgaben lässt sich problemlos in den klinischen HNO Alltag integrieren und könnte eine wertvolle Ergänzung der audiologischen Diagnostik im Hinblick auf eine bestmögliche Hörrehabilitation darstellen.
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© Georg Thieme Verlag KG Stuttgart · New York

Article in Thieme eJournals:
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Inherited thrombotic thrombocytopenic purpura mimicking immune thrombocytopenic purpura during pregnancy: a case report

Thrombotic thrombocytopenic purpura is a very rare hereditary blood deficiency disorder of ADAMTS13 (von Willebrand factor-cleaving protease) and a life-threatening thrombotic microangiopathy characterized by ...

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Reassessment of Differentiated Thyroid Cancer Patients Using the Eighth TNM/AJCC Classification System: A Comparative Study

Thyroid , Vol. 0, No. 0.


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Effect of Diabetes Sleep Education for T2DM Who Sleep After Midnight: A Pilot Study from China

Metabolic Syndrome and Related Disorders , Vol. 0, No. 0.


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