Photos: Johan Wingborg, University Gothenburg, Sahlgrenska Academy The Osteology Foundation congratulates its President, Professor Mariano Sanz, on a honorary doctorate from the University of Gothenburg, which he received for his longstanding collaboration with researchers at Sahlgrenska Academy. In May 2015 the Sahlgrenska Academy at the University of Gothenburg announced that they awarded ahonorary doctorate to Mariano Sanz,Professor of Periodontology and Dean of the Faculty of Odontology at University Complutense of Madrid, Spain, and president of the Osteology Foundation.The honorary doctorate was now conferred in a ceremony on 16 October 2015. He has published more than 200scientific articles and book chapters and is one of the most popular international lecturers on odontology, Sahlgrenska Academy said in their official announcement. Hislongstanding collaboration with researchers at Sahlgrenska Academy had a major impact on advances in knowledge about healing processes after tooth extraction. Honorary doctorates fromSahlgrenska Academyare awarded to those who have played a key role in research or education at the academy or who have otherwise promoted progress in the fields that it addresses. Together with Mariano Sanz, two other researchers were awarded:Professor Sharon Fonn from theUniversity of Witwatersrand in Johannesburg, South Africa, fora project that supports postgraduate studies in southern Africa and affords faculty members from Sahlgrenska Academy a prominent role, andProfessor Salim Yusuf,from McMaster University, Ontario, Canada, for hiscontributions to Swedish research, particularly in connection with a number of large studies concerning cardiovascular disease in low and middle income countries. More information on the website of the Sahlgrenska Academy

Objectives: Recent studies show that air-polishing is an effective method for maintaining implants and treating peri-implant mucositis and peri-implantitis. However, none of the studies investigated how the method works, in terms of the shape and size of the cleaning area around the nozzle, the influence of different settings and depth of pockets. This study aimed to identify the most effective technique by examining the most important parameters. Methods: Forty-eight titanium SLA surface discs were coated with calcium phosphate (CaP) to simulate visually identifiable plaque and were inserted in subgingival models. All applications were done using an EMS Air-Flow[tm] master with a plastic Perio-Flow[tm] nozzle, on Perio Mode and using EMS Air-Flow[tm] Plus Powder. In the first part of the experiment, discs were treated with the EMS airflow device for 5 seconds in a static state using different air and water settings, nozzle depths and chambers with different powder flows. The most effective settings, established from these results, were used for the second part of the experiment, but the nozzle was moved in three different ways. In both parts, powder consumption, water consumption and total cleaned area were calculated. In the first part, the analysis was carried out using a multifactorial (25 factors) statistical design (ANOVA). The assumption was checked graphically with a Q-Q plot and tested with Levene’s test. Only factors with p Results: The average powder consumption for a standard chamber (EMS Air-Flow[tm] Perio Plus Chamber) with low-pressure settings was 0.05 gr and 0.13 gr with high pressure. The factors that significantly influenced cleaning efficiency were air pressure, powder flow, the combination of air pressure and powder flow, the combination of air pressure and nozzle depth, and the combination of the water volume and powder flow. Factors were considered relevant with a p2) of the model statistical model was 85.63%, meaning that 85% of the results could be explained by these factors. The air pressure had a major effect. The total cleaned surface area was greater in all higher-pressure groups. The cleaning effect was spread around the nozzle, whereby the size of the cleaned area exceeded the nozzle’s physical borders both horizontally and vertically. The mean distance between the right edge to the left edge of the cleaned area was 6.53mm at high pressure and 4.35mm at low pressure. The cleaning effect reached an average of 2.8mm beyond the nozzle exit (i.e. the nozzle cleaned vertically deeper than its own size). There were no significant difference between the three nozzle movements, but cleaning efficiency decreased significantly if there was no movement or powder, while the presence of powder and any type of movement had a big impact on cleaning efficiency. Conclusion: The study unravelled how air-polishing works on implant surface, thus cleaning efficiency can be improved by paying attention to the factors outlined here, the most important of which is air pressure. The more pressure applied, the better the cleaning effect. Inserting the nozzle into deeper pockets enhances the effect, and moving the nozzle is crucial. Clinicians should use high-pressure settings, preferably in deep pockets, with nozzle movement. Certain areas were only cleaned superficially after 5 seconds, therefore we recommended applying airflow twice for 5 seconds per site for deeper cleaning of implant surfaces. Another important finding is that cleaning extends beyond the nozzle end, confirming that it is better at reaching deeper areas than hand devices.

Inhalt: - Vorstellung der Patientin und Ästhetikanalyse - Schonende Extraktion eines nicht erhaltungswürdigen Zahnes - Anwendung einer Miniplastschiene als chirurgische Schablone - Knochengewinnung aus der Implantatbettbohrung - Inserieren eines CONELOG® Implantates regio 11 - Gewinnung eines kortikospongiösen Knochenzylinders in regio 48 - Augmentation der Alveole und Rekonstruktion der bukkalen Lamelle - Gewinnung eines Bindegewebstransplantates - Tunnelierung in der vestibulären Mukosa, verschiedene Nahttechniken - Einfügen der Interimsversorgung - 3 Monate später: Präparation, Abformung, Registrierung mit Bissgabel und Gesichtsbogen, provisorische Versorgung - Meistermodell, Wax-Up, Ermittlung des Durchtrittsprofi ls, Erstellen des Emergenzprofils - Herstellung eines Hybridabutments, Scannen des individualisierten Abutments, Konstruktion der Kronen, Herstellung eines Zirkoniumdioxidabutments und eines Veneers aus Feldspat-Presskeramik, Verblendung des Veneers - Konditionieren und Verkleben der Einzelteile, Endkontrolle an der Patientin - Einprobe und adhäsive Befestigung