The International journal of prosthodontics最新文献

Purpose: This study aimed to evaluate the color and translucency changes of conventional, milled, and three-dimensional (3D)-printed provisional restorative materials (PRMs) after cigarette smoke exposure and brushing.

Materials and methods: A total of 120 disc-shaped (Ø6 mm × 2 mm) specimens were fabricated from conventional (CN; GC TempSmart), milled (ML; FusionCeram), and 3D-printed (PR; GC TempPRINT) PRMs (n=40 per material). Specimens were randomly divided into smoke-exposed (S) and control (C) groups (n=20). After 20 days of exposure (20 cigarettes/day, 2-second puffs, 60-second intervals) or artificial saliva storage, specimens underwent brushing simulation (15 strokes/day) to form S-BR and C-BR subgroups. Color and translucency were measured at baseline (T0), post-exposure (T1), and post-brushing (T2) using a spectrophotometer. Color change (∆E00), translucency change (∆TP00), and translucency parameter (TP00) were calculated. Data were analyzed using two-way robust ANOVA (5% trimmed means) and Tukey's post hoc test (α = .05).

Results: ML exhibited significantly lower ∆E00 values than CN and PR after cigarette smoke exposure (P < .001). Brushing reduced discoloration in all smoking groups, especially for ML (P < .05). PR showed the highest ∆TP00 values across groups, differing significantly only from ML (P = .008). ML consistently demonstrated the highest TP00 values across all groups (P < .001), indicating superior translucency retention.

Conclusions: Cigarette smoke adversely affected the optical properties of PRMs, particularly in conventional and 3D-printed resins. Milled materials exhibited superior resistance to discoloration and translucency change. Although brushing did not completely reverse staining, it effectively reduced discoloration, particularly in milled materials.

The passivity of screw-retained restorations is challenging to achieve yet difficult to measure and quantify. The purpose of this article is to describe a digital technique to construct an implant verification jig that allows quantifying the degree of framework misfit. A gear cylinder is designed and connected to the digital scan over each implant component. The gears are connected to form a verification bar design. The milled bar is used with a plastic pointer mounted on the screwdriver to calculate the degree of framework misfit. Key message/ clinical relevance: This method is a helpful clinical tool that would help clinicians make better decisions regarding framework passivity. Furthermore, it can be helpful for a researcher who needs to quantify the degree of misfit instead of using subjective nonparametric techniques.

Purpose: To evaluate the global research landscape on dental prosthetic complications by identifying the most productive countries, institutions, authors, and journals. Additionally, it sought to highlight the most cited publications and commonly used keywords in the field.

Materials and methods: A comprehensive search was conducted in the Web of Science database on March 27, 2025, using the term 'dental prosthetic complications.' A total of 1665 English-language records (articles and reviews) published between January 2000 and December 2024 were analyzed. Bibliometric indicators-including publication year, citation count, country, institution, author, journal, and keywords-were evaluated using VOS viewer (v1.6.15) and Microsoft Excel.

Results: Research output increased substantially after 2010. Italy, the USA, and Germany ranked highest in publication volume, while Switzerland and Sweden showed the highest citation averages. The University of Bern was the most productive institution. Prolific authors included Marco Tallarico, Marco Esposito, Silvio Mario Meloni, and Niklaus P. Lang. Highly cited studies predominantly focused on complications in implant-supported restorations. Leading journals were The International Journal of Oral & Maxillofacial Implants, Clinical Oral Implants Research, Clinical Implant Dentistry and Related Research. Keyword analysis revealed that 'dental implants' and related terms remained central research themes.

Conclusions: The volume of research on dental prosthetic complications has grown considerably over the past two decades, particularly in relation to implant-based treatments. Since 2010, the growing number of publications and expanding international collaborations reflect rising scientific interest in this field. Recurrent complications continue to shape research priorities, highlighting the ongoing clinical significance of prosthetic complications.