Surface pretreatment protocols for indirect/semi-direct dental restorations: a cross-sectional survey and expert consensus

Mayinger, Felicitas; Lankes, Valerie; Roos, Malgorzata; Rohr, Nadja; Ioannidis, Alexis; Elsayed, Adham; Güth, Jan-Frederik; Edelhoff, Daniel; Passia, Nicole; Esmail, Iman; Beuer, Florian; Wolfart, Stefan; Spies, Benedikt Christopher; Schimmel, Martin; Abou-Ayash, Samir; Hahnel, Sebastian; Schlenz, Maximiliane Amelie; Frankenberger, Roland; Blunck, Uwe; Kraus, Dominik; Engelschalk, Marcus; Huettig, Fabian; Kern, Matthias; Luehrs, Anne-Katrin; Gierthmuehlen, Petra C.; Stawarczyk, Bogna (2025): Surface pretreatment protocols for indirect/semi-direct dental restorations: a cross-sectional survey and expert consensus. Journal of Adhesive Dentistry, 27. pp. 123-136. ISSN 1461-5185

Abstract

Purpose: To investigate, via questionnaire, how protocols for adhesive luting workflows of dental restorations are applied in three German-speaking countries.

Material and Methods: A 47-item questionnaire gathered data on APA unit characteristics, parameters, operating procedures, pretreatments in adhesive luting workflows for restorations, and participant demographics. The survey was distributed via trade journals, expert associations, universities, technical schools, and social media. Marginal absolute and relative frequencies were analyzed (95% confidence intervals), with Chi-squared tests comparing observed and expected frequencies (p<0.05). Twenty-three experts voted on 23 recommendations regarding APA parameters and other pretreatments for bonding restorations.

Results: A total of 267 participants completed the survey. Access to an APA unit was linked to a higher likelihood of performing APA before placement. Approximately half of the participants used APA in their practice. For zirconia restorations, 47.2% applied alumina APA at 50µm/0.1MPa, while 36.7% used the same settings for polymer-based restorations. For alloys, 37.5% employed 110µm/0.2MPa. These preferences correlated with age (≥30 years), experience (≥10 years), profession (dental technician/dentist), prior instruction/training and daily APA use. Adhesives with MDP were used for zirconia (63.8%) and those with silane for silicate-based ceramic (55.9%). Agreement on recommendations ranged between 52% and 100%, with 21/23 reaching an average of 93%.

Conclusion: APA access influenced clinical decisions and feasibility of adhesive luting workflows. Adequate APA equipment in dental facilities is essential for quality care. Standardized protocols, training and education across dental professions are necessary to enhance understanding and proper APA use.

• Dokumententyp: Artikel (Klinikum der LMU)
• Organisationseinheit (Fakultäten): 07 Medizin > Klinikum der LMU München > Poliklinik für Zahnärztliche Prothetik
• DFG-Fachsystematik der Wissenschaftsbereiche: Lebenswissenschaften